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2025 Mazda Mazda3 TSBs

153 Technical Service Bulletins across 17 categories

Engine

38 bulletins
11037900

Mazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below.

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The changes are noted in Red text. SA-042/26 06/30/26 DESCRIPTION Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out

11037899

DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...),...

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interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay/ Android Auto will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button

11037636

NOTE: This service information only applies to vehicles with PYUKD engine and EGR.

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DESCRIPTION DTC P0402 EGR malfunctions may be falsely detected due to an internal malfunction of the MAP sensor. REPAIR PROCEDURE 1. Using MDARS, verify DTC P0402 is set in current or past history.

11037018

This Service Alert supersedes the previously issued service alert listed below.

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The changes are noted in Red text. SA-038/26 06/15/26 DESCRIPTION Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote functions inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\". Index MAZDA CONNECT 2 Center Display Status Icon MAZDA CONNECT 3 Center Display Status Icon Remote Engine Start Will Not Function Remote Engine Start Function Will turn engine OFF Customer Subscription Status TCU Communication Line Status

11037006

Some vehicle may exhibit the CHECK ENGINE light on with DTC P0524 (Engine oil pressure control system: Oil pressure...

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decrease) and no abnormal engine noise. This may be caused by a malfunction of the oil pressure control valve (located at the rear of the engine block near the oil filter) due to machining contamination inside the electromagnet sleeve and the solenoid plunger remaining during manufacturing. This contamination is affecting the OCV operation when oil pressure control is requested by the PCM. REPAIR PROCEDURE Perform the WSM inspection for P0524.

11035595

DESCRIPTION Some customers may complain that the electric power steering warning light illuminates after engine start and DTC U2011:1C is stored.

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Zinc-plated whisker may form inside the EPS motor and trigger the DTC. However, since it is cleared when power is supplied during DTC detection, normal operation can be restored by turning the ignition OFF and then ON. Furthermore, there is no possibility of recurrence. This case may be resolved through a simple inspection or repair without the need for parts replacement, potentially avoiding unnecessary customer waiting time.

11034845

DESCRIPTION Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\". Index MAZDA CONNECT 2 Center Display Status Icon MAZDA CONNECT 3 Center Display Status Icon Remote Engine Start Will Not Function Remote Engine Start Function Will turn engine OFF Customer Subscription Status TCU Communication Line Status

11034448

This Service Alert supersedes the previously issued SAs listed below.

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The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION Mazda Connect Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out

11034447

This SA supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay/ Android Auto will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button Example 1: Some electrical devices connected to the DLC-2 connector by insurance or mobile phone companies may cause: Battery discharge. The device may disrupt the CAN system battery saver mode. IDS/MMDS will not communicate with the vehicle due to poor DLC-2 connection. The aftermarket device may cause DLC-2 female terminals to spread open.

11033446

This SA supersedes the previously issued SA(s) listed below.

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The changes are noted below in Red. SA-029/25 10/16/25 and 06/02/25 DESCRIPTION This service information provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure. REPAIR PROCEDURE HIGH VOLTAGE BATTERY MAINTENANCE Verify the State-of-charge (SOC) in the instrument cluster. MX-30 EV: If the SOC is lower than 26%, charge it to 50% (either by normal charging or quick charging). CX-90/CX-70 PHEV: If the SOC is lower than 1%, charge it to 10% (either by normal charging, quick charging or engine running).

11032101

This Service Alert supersedes the previously issued M-Tip(s) listed below.

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The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage. Clean the intake manifold internally to remove any debris from old engine before installing the new replacement engine assembly. If the intake manifold cannot be properly cleaned internally, replace it.

11032001

This bulletin supersedes the previously issued bulletin(s) listed below.

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The changes are noted in Red text. 01-003/26 01/30/26 Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored. P20F8:00 - Swirl control circuit range/performance problem. In these cases, increasing temperature levels of the Swirl Control Valve (SCV) motor due to excessive actuation leads to duty limitation, causing poor openingangle response and resulting in a stuck judgment. To eliminate this concern, the PCM logic has been modified. REPAIR PROCEDURE Reprogram the PCM with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure.

11030636

This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted in Red.

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SA-035/24 05/31/24 DESCRIPTION There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not. A mechanical seal (A) is used for the water pump. This mechanical seal can seal coolant (B) by sliding a mating ring (C) against a seal ring (D). When the sliding surface temperature of the mechanical seal is more than 248 F (120 C) while driving, a small amount of steam (E) is leaked and bleeds through the bleeding hole (F). After drying, the steam leaves a green coolant deposit near the water pump bleed hole (F). This is a normal condition and does not require water pump replacement. The water pump should only be replaced if there is an accumulation of crystallized coolant near the bleed hole. When you encounter a water pump with coolant seepage marks, decide to replace it or not based on the following criteria using sample photos. NOTE: During the initial period of use*, the sliding surfaces of the seals may not yet be fully settled, which can temporarily increase the amount of leakage. Continued use will allow the surfaces to settle, reducing the leakage. Replacing parts that are already settled with new ones will increase the leakage again until the new parts become conditioned. Therefore, replacement should be avoided in this initial period of use. *As a guideline, this applies to vehicles with less than 1,860 miles (3000 km) of mileage.

11028142

SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3,...

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2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: On certain subject vehicles, the check engine light is illuminated with DTC P0126:00 (Thermostat stuck open) stored in memory and one or more of the following symptoms may occur: - Engine takes longer to warm up. - Engine temperature gauge fluctuates. - Low coolant temperature indicator (blue) light stays on longer or turns on while driving. - Poor heater performance, especially at idle. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a Software Update record for the PCM when using MDARS or IDS. MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. IDS Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealers expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs.

11028133

There are currently 2 methods for cutting a new auxiliary key blank.

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A. Auxiliary Key Trace Cut Method B. Auxiliary Key Code Cut Method 2019 and newer models require a 10-digit key code to accurately cut keys 5-digit codes CANNOT be provided for 2019 and newer vehicles (the traditional 5-digit code from the key tag or driver's door lock cylinder is not sufficient and will not be issued for key cutting on these models). Only Mazda-approved key cutting machines can process these 10-digit codes. Many older key machines do not support 10-digit codes and cannot be updated to do so. In these cases, dealers will need to purchase one of the newer Mazda-approved key cutting machines capable of handling this requirement. For a list of current Mazda-approved machines and purchasing options, refer to the Mazda Dealer Equipment Program or view the current Mazda approved key machines below.

11028102

Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored.

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P20F8:00 - Swirl control circuit range/performance problem. The DTC is caused by overheating of the Swirl Control Valve (SCV) motor which leads to duty limitation, causing poor openingangle response and resulting in stuck judgment. To eliminate this concern, the PCM control software has been modified.

11026917

If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the...

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customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices.

11026916

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\". Page

11026351

Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked.

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For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a repair, or just to clean the area and monitor it at the next service. Examples of residue or seepage that may not be considered a leak and that may not require repair based on splash shield inspection.

11026348

A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models.

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ATF-A7 is an extremely low viscosity formulation with low friction to achieve best-in-class fuel economy and driving performance. For easy identification, ATF-A7 is colored Red and ATF-FZ is colored Blue. ATF-A7 includes UV-reactive dye (see "Fluorescence Example" below). There is NO interchangeability between ATF-A7 and ATF-FZ. For CX-30, Mazda3, and CX-5, some 2.5L and all 2.5T engines still use ATF-FZ. Verify the type of ATF according to what is in MGSS (TRANSMISSION/TRANSAXLE TECHNICAL DATA) or what is marked on the dipstick (see "ATF-A7 Identification" below).

11026094

Some customers may see the A/T warning light on during (or immediately after) engine start-up with DTCs P073D:00-TCM / P1738:00-TCM stored.

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P073D:00-TCM: Turbine/input shaft speed sensor: Sensor output range malfunction P1738:00-TCM: Automatic transaxle internal malfunction This concern is caused by improper TCM logic. To eliminate this concern, the TCM control software has been modified to change the DTC detection logic, preventing DTC judgment during start-up.

11024992

Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7230C**A-NA10_10024).

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NOTE: If current version is not 7230C**-NA10_*****, this TSB is not applicable. (Ver. 10024 for 7230C**-NA10) fixes these software errors (bugs): Air conditioning settings cannot be controlled via Alexa without a CV contract. The banner display for battery level notifications of Bluetooth-connected devices has been modified. The system may freeze on the disclaimer screen when the engine is started normally after using the remote engine starter. However, the camera images on the center display are not affected, and the back camera is usable. Only Bluetooth connection is established when attempting to connect Android Auto.

11022744

A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models.

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ATF-A7 is an extremely low viscosity formulation with low friction to achieve best-in-class fuel economy and driving performance. For easy identification, ATF-A7 is colored Red and ATF-FZ is colored Blue. There is NO interchangeability between ATF-A7 and ATF-FZ. For CX-30, Mazda3, and CX-5, some 2.5L and all 2.5T engines still use ATF-FZ. Verify the type of ATF according to what is in MGSS (TRANSMISSION/TRANSAXLE TECHNICAL DATA) or what is marked on the dipstick (see below).

11022725

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\".

11022629

Subject: Puerto Rico specification vehicles do not have Connected Vehicle Services (CV) Owner Notification Program ONP10...

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2025MY Mazda CX-5, Mazda3, CX-70, CX-90 Dear Mazda Dealer Colleagues, Mazda Motor Corporation has decided to conduct an Owner Notification Program (ONP) on certain 2025 Mazda Corporate and Retail Fleet vehicles. There are 199 vehicles in this campaign and no Mazda Retail vehicles in dealer stock or sold new, used or CPO are affected. Subject VIN and Production date ranges: Model and Quantity affected Subject VIN range Various non-sequential VINs for these models * Only specific vehicles with ONP10 listed in Warranty Vehicle Inquiry are affected Concern Outline: 199 Puerto Rico specification vehicles were sold and registered in the United States as both Corporate vehicles (75) and Rental Fleet vehicles (124). These vehicles do not have Connected Vehicle Services (CV) available, which also means these vehicles cannot be connected to the MyMazda App to use various features like remote start.

11021499

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\".

11020039

Some customers may complain about a noisy HVAC blower motor or odor after a cabin air filter replacement.

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Foreign debris on the blower motor after servicing the cabin air filter may be the cause. During the removal of the cabin air filter, foreign debris (leaves, dust, dirt....ect.) may fall on the blower motor causing a fluttering type noise or odor.

11020037

A tapping/rattling noise may be noticed from the valve train area.

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This operating condition can occur on new vehicles which have been delivered to Mazda dealers (due to loading and unloading from transport trucks or customers moving their vehicles in and out of their garages to wash the vehicle, etc.). This condition may also occur if the engine is not allowed to warm up after multiple cold starts.

11019179

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\".

11019089

Some customers may see the A/T warning light on during (or immediately after) engine start-up with DTC P073D:00-TCM stored.

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P073D:00-TCM: Turbine/input shaft speed sensor: Sensor output range malfunction This concern is caused by improper TCM logic. To eliminate this concern, the TCM control software has been modified to change the DTC detection logic, preventing DTC judgment during start-up.

11015003

Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery...

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power consumption is restricted, thereby extending the transmitter battery life and the following will occur: The engine will not start unless the key transmitter is held over the Start Stop button. Outside door handle lock/unlock touch sensor is inoperative. Key transmitter indicator lights are inoperative. The following DTC's may be stored: DTC B13D3:94 (Communication error with remote transmitter) DTC P1260:00 (Immobilizer system problem).

11013788

Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery...

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power consumption is restricted, thereby extending the transmitter battery life. NOTE: Some customers may complain about an engine no start. This may be caused by the customer inadvertently putting the key transmitter in Power Saving Function.

11011138

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or "\".

11008573

Some customers may complain about any of the following: 1.

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Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control

11007019

If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the...

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customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices.

11007010

Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked.

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For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a repair, or just to clean the area and monitor it at the next service.

11006981

Some customers may experience a check engine light ON with DTC P0126:00 (Thermostat stuck open) and one or more of the...

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following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator (blue) light stays on longer or turns on while driving. Poor heater performance, especially at idle.

11000775

There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole.

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This Service Alert is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not.

Infotainment

18 bulletins
11037634

This Service Alert supersedes the previously issued service alert listed below.

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The changes are noted in Red text. SA-038/26 08/18/26 and 06/15/26 DESCRIPTION Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App

11037008

DESCRIPTION Some vehicles may continue to display the recall notification "IMPORTANT NOTICE.

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VIEW VEHICLE STATUS MONITOR FOR DETAILS" on the center display even after the recall has been completed. NOTE: Once the warranty claim for the recall campaign is approved by Mazda Japan, the recall notification will be automatically removed via Connected Services on the following day or later. This condition may occur if the Connected Services subscription was canceled while the recall notification was still active. ACTION TO BE TAKEN If you encounter the situation above, use MDARS to manually remove the center display recall notification. Note: MDARS can only remove the recall notification when MCVV shows no CV contract.

11034444

This Service Alert supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-009/25 08/22/25 and 02/18/25 DESCRIPTION Some customers may experience a Connected Vehicle failure. The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs. Index System Outline MYMAZDA App Connected Vehicle (CV) Error Codes Vehicle Confirmation Instructions Troubleshooting Instructions Resources

11034443

This Service Alert supersedes the previously issued SA listed below.

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The changes are noted in Red text. SA-012/25 10/06/25, 08/21/25, 05/15/25 and 02/27/25 DESCRIPTION Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. REPAIR PROCEDURE NOTE: Before proceeding: Document the vehicle's current MAZDA CONNECT CMU software version. 2019-2022 Models - Go to TSB 16-003/23 and confirm the CMU Serial Number is not within the affected range. Document customer device Brand/Model/Model Number/software version on the repair order. Confirm that the Connectivity Master Unit (CMU) is updated to the latest software version. Go to MGSS -> Infotainment -> MAZDA CONNECT Updates If possible, complete the Microsoft Forms Questionnaire. Go to MGSS -> Infotainment -> MAZDA CONNECT Questionnaire.

11034290

UPDATED SOFTWARE RELEASE FOR CONCERNS WITH MAZDA CONNECT INFOTAINMENT SYSTEM DESCRIPTION The release notes outlined...

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below provide an overview of bug fixes, feature improvements, and updates included in the latest software release. The latest version of software contains all the updates of the previous versions. NOTE: If current version is not 7230C**-NA10_*****, this TSB is not applicable. Version 10034 for 7230C1A-NA10 or 7230C5B-NA10 enables termination of connected services at customer request Termination of Connected Services by customers at their initiative has been enabled. Accordingly, the following items have been updated. Add a "Data Communication Information" item under Settings > System Settings>Online Connectivity. Updated the text displayed on the confirmation screen for disabling Connected Services. REPAIR PROCEDURE 1. Verify the customer concern. 2. Update MAZDA CONNECT with software version 10034 / 10026 or later with a USB memory stick using the 7TH GEN MAZDA CONNECT Update Instructions.

11026907

Customers may report no audio when using the infotainment fader function fully adjusted to the rear.

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If the customer's vehicle is among the trim levels referenced above it is equipped with a 6-speaker infotainment system and does not include rear door speakers even though there are speaker grills/covers in the rear door panels. MazdaUSA and published vehicle specifications provide the correct information indicating that these trims are equipped with a "6-speaker audio system". This is a normal condition of the "6-speaker audio system" and current Mazda CONNECT fader function. Rear speaker diagnosis is not necessary as they are not equipped.

11023703

Some vehicles may have one of the following DTCs stored in memory along with a system status notice on the...

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Multi-information display OR display a system status notice with no DTC: C1001:92 - Forward sensing camera (FSC) poor field of view [Gen 6 vehicles] B14F0:92 - General temporary failure in forward sensing camera (FSC) [Gen 7 vehicles built on or before March 2, 2019] No DTC - Warning Message only [Gen 7 vehicles built after March 2, 2019] DTC C1001:92 or B14F0:92 set as a past record for low visibility of the Forward Sensing Camera (FSC). It does not mean there is an actual FSC defect. In some cases the customer may have a concern with the Lane Departure Warning System (LDWS) and/or High Beam Control system (HBC). In other cases this DTC might be found without a related customer concern.

11022738

When replacing the MAZDA CONNECT remote tuner (RT) with a replacement tuner for any reason, a call must be made to...

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inform SiriusXM of the existing Radio ID and the new/replacement SAT Radio ID as soon as possible to ensure the customer leaves the dealership with an active SAT radio.

11022726

Some vehicles may show TSR system performance is reduced.

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Navigation Data Unavailable" or "Check Navigation SD Card" in the meter while driving.

11022717

Some customers may experience a Connected Vehicle failure.

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The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs.

11019180

Mazda Navigation Live Traffic information is available on the following 2 systems.

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SiriusXM 3 Yr Traffic and Travel Link* Mazda Online Navigation* The table below provides Setting information for both systems. See APPLICABLE MODEL(S)/VINS above to determine how vehicles are equipped. NOTE: When selecting Navigation, data upload may take a few seconds. This is a normal function.

11019164

Some vehicles may have recall notifications remain on the center display even after a recall is performed.

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NOTE: When the warranty claim for the recall campaign is accepted at Mazda Japan, the recall notification will be automatically deleted via the Connected Service on the next day or later. This situation occurs if the Connected Service subscription has been cancelled while the recall notifications remain.

11015005

Some customers may experience a Connected Vehicle failure.

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The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs.

11013572

Customers may report no audio when using the infotainment fader function fully adjusted to the rear.

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If the customer's vehicle is among the trim levels referenced above it is equipped with a 6-speaker infotainment system and does not include rear door speakers even though there are speaker grills/covers in the rear door panels. MazdaUSA and published vehicle specifications provide the correct information indicating that these trims are equipped with a "6-speaker audio system". This is a normal condition of the "6-speaker audio system" and current Mazda CONNECT fader function. Rear speaker diagnosis is not necessary as they are not equipped.

11009643

Customers may report no audio when using the infotainment fader function fully adjusted to the rear.

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If the customer's vehicle is among the trim levels referrenced above it is equipped with a 6-speaker infotainment system and does not include rear door speakers even though there are speaker grills/covers in the rear door panels. MazdaUSA and published vehicle specifications provide the correct information indicating that these trims are equipped with a "6-speaker audio system".

11008575

Some customers may complain about the Active Driving Display not displaying turn by turn (TBT) travel direction or...

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navigation information.

11008574

Some customers may experience a Connected Vehicle failure.

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The MyMazda App may display an Error Code. This document provides Error Code description and recovery information to assist with repairs.

11000778

Some customers may complain about color discrepancies (brightness differences) of the image displayed on the screen when using the 360view monitor.

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As this phenomenon is not a system failure, do not make any repairs or replace any parts. Explain the cause of this occurrence to the customer as follows: The 360view monitor is a system that provides a complete picture of the vehicle surroundings by combining the pictures captured by 4 separate cameras. These cameras are installed in the front, rear, right and left sides of the vehicle. Each camera has a color adjustment function (white balance) that operates independently from each other, which can result in color discrepancy when the combined picture is displayed on the screen. This is especially true when one of the cameras captures more green objects than the remaining cameras.

Electrical

18 bulletins
11037011

This Service Alert supersedes the previously issued bulletin(s) listed below.

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The changes are noted in Red text. SA-006/23 01/23/23 DESCRIPTION Some customers may complain about the infotainment system and/or the MyMazda App showing incorrect clock and/or tire pressures and/or tire pressure missing. This may be caused by: Incorrect calendar entry (month/day/year) after a battery disconnect Infotainment system software update. BCM TPMS unlearn during vehicle storage or transport. Wheel/Tire change REPAIR PROCEDURE This can be corrected by the customer driving the vehicle for a day or two so that the following will occur.

11035606

This SA supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-063/24 09/06/24 DESCRIPTION The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction.

11034439

This SA supersedes the previously issued bulletin(s) listed below.

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The changes are noted below in Red. SA-027/26 04/16/26 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. REPAIR PROCEDURE 1. Perform appropriate repair to vehicle. If needed, use the Battery Diagnostics of the DCA-8000 to test the charging and starting systems by following the on-screen instructions for entering the appropriate information. Refer to the Mazda DCA-8000 Instruction Manual for more information.

11032102

This SA supersedes the previously issued bulletin(s) listed below.

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The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a batterys Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result in a false result and invalid Warranty Code from the tester. This will also result in unnecessary replacement of batteries. TEST PROCEDURE 1. Connect the charger clamps to the appropriate battery posts.

11032015

Some customers may experience a message "TCU Malfunction.

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Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. NO: This service information does not apply. Continue troubleshooting using MGSS. 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. NO: Go to the next step. 4. Clear the DTC's

11030631

This Service Alert supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-012/26 02/26/2026 DESCRIPTION Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. NO: This service information does not apply. Continue troubleshooting using MGSS. 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. NO: Go to the next step. 4. Check for a Navi SD Card. Is the vehicle equipped with a Navi SD Card? YES: Replace the Navi SD Card. NO: Go to next step. 5. Complete the Dealer Connected Vehicle Questionnaire. 6. Collect CMU log data. Go to Infotainment/TCU --> Collecting CMU Log Data --> CMU Log Data Retrieval Instructions 7. Collect TCU log data. Go to Infotainment/TCU --> TCU Log Data Retrieval Instructions --> CMU Log Data Retrieval Instructions 8. Contact Hotline for additional assistance. 9. Release the vehicle to the customer. NOTE: This concern is currently under investigation

11026904

A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating.

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It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. Mazda Air Cooling Coil Coating is available to encapsulate the mold to reduce odors. If the product is properly applied, it can effectively reduce the musty/mildew odor for up to three years. NOTE: See parts information for Mazda Air Cooling Coil Coating and Kit part numbers.

11024999

For improvement of electrical diagnosis, the SKYACTIV Wiring Terminal Test Kits has been delivered all the dealers.

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The terminal test kit enables you: To check pin fit drag of all PCM terminals used in SKYACTIV vehicles and compare suspect terminal drag with a known good terminal. To measure the voltage/resistance avoiding any terminal damage.

11024997

This service information provides testing and charging procedures in order to promote proper battery maintenance, to...

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deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure.

11024994

The Mazda DCA-8000 is required for all warranty battery testing.

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If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery.

11020036

This service information provides testing and charging procedures in order to promote proper battery maintenance, to...

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deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure.

11020035

The Mazda DCA-8000 is required for all warranty battery testing.

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If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a batterys Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result

11017699

A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating.

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It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. Mazda Air Cooling Coil Coating is available to encapsulate the mold to reduce odors. If the product is properly applied, it can effectively reduce the musty/mildew odor for up to three years.

11015004

The Mazda DCA-8000 is required for all warranty battery testing.

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If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code.

11009655

This service information provides testing and charging procedures in order to promote proper battery maintenance, to...

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deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure.

11008423

The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are...

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installed facing the wrong direction. BSM system indicates vehicle on the opposite side. i-ACTIVSENSE indicator ring will not turn green Rear Cross Traffic Alert (RCTA) does not work Rear side radar sensor aiming may fail TPMS DTC(s) stored

11007029

For improvement of electrical diagnosis, the SKYACTIV Wiring Terminal Test Kits has been delivered all the dealers.

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The terminal test kit enables you: To check pin fit drag of all PCM terminals used in SKYACTIV vehicles and compare suspect terminal drag with a known good terminal. To measure the voltage/resistance avoiding any terminal damage.

11006918

When the power windows are operated many times without being fully closed, small errors of the window position sensor...

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may accumulate and cause improper operation of the jam-safe function. To reduce the risk of this occurrence, the AUTO function is disabled if the power window is operated 10 consecutive times without being fully closed (turning the ignition OFF and then ON does not reset the counting). If the power window is fully closed before the 10th time, the counting restarts and the AUTO function is not deactivated.

Body & Paint

15 bulletins
11037627

This bulletin supersedes the previously issued bulletin(s) listed below.

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The changes are noted in Red text. 09-043/25 11/26/2025 DESCRIPTION Some vehicles may experience a clicking noise when opening and/or closing the front door due to a broken front door checker plate. To reduce the clicking noise, the material of the plastic component in the door checker has been modified. REPAIR PROCEDURE 1. Verify the customer concern. 2. Replace the front door checker plate with the interim countermeasure part according to the instructions on MGSS FRONT DOOR CHECKER REMOVAL/INSTALLATION. NOTE: Repair only the affected side.

11032104

DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label.

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To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a replacement vehicle certification label (located on the Bpillar or front door), contact your assigned DSM (District Service Manager) to place the order. If DSM contact information is not available, refer to the Dealer & Field Contact Directory.

11030647

This SA supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-045/22 12/06/22 and 07/12/22 NOTE: All vehicles with protective films applied to the piano black door garnishes of the following models are applicable to this Service Alert. DESCRIPTION The purpose of this Service Alert is to remind dealers to keep the protective films on the piano black door garnishes attached until just before delivering the vehicle to the customer. The protective films are attached on new vehicles when shipped from the factory in order to avoid being scratched during transportation and while in dealer stock. NOTE: Remove the protective films after cleaning the vehicle. If any adhesive residue remains on the surface of the door garnish, attach the adhesive side of the protective film on the area again, and then peel it off to remove the residue. Refer to the image below for the location of the protective films (4 sheets of films in each side).

11026100

Some vehicles may experience a clicking noise when opening and/or closing the front door due to a broken front door...

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checker plate.

11024989

Some customers may notice water in the trunk after a car wash or heavy rain.

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This may be caused by insufficient sealing performance of the trunk lid weatherstrip. Due to improper installation of weatherstrips, the lip of the weatherstrip may lean toward the inside of the trunk, resulting in insufficient sealing performance. To eliminate this concern, the length of the trunk lid weatherstrip has been extended 14 mm {0.5 in.}.

11022742

Some vehicles may experience exterior trim heat damage such (melted, separating, etc.) when parked near a glass building or Low-E windows.

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This may be caused by the sun's reflection. If a structure's windows create enough of a curve, the concave glass can focus the sun's rays onto a small area and acting like magnifiying glass direct the sunbeams into a hot pinpoint of light. This magnifcation of the sun's rays can cause damage to vehicle trim (see examples). Additional information and exemplar images regarding this phenomenon can be found by performing a google search.

11022624

Some customers may notice water in the trunk after a car wash or heavy rain.

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This may be caused by insufficient sealing performance of the trunk lid weatherstrip. Due to improper installation of weatherstrips, the lip of the weatherstrip may lean toward the inside of the trunk, resulting in insufficient sealing performance.

11021389

Some vehicles may exhibit that the glass run channel of the front door interferes with the rear door garnish.

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Since the front door glass run channel is not fixed to the door strongly enough for the following situations, cycles of door operation may result in interference and lead to damage on the seal rubber at the rear door.

11019160

Some vehicles may exhibit wiper blade contact with the A-pillar trim, with or without a chattering noise.

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This condition may be caused by worn or contaminated wiper blades. It can also be caused by bent wiper arms, or loose wiper arm retaining nuts due to improper handling. Improper handling occurs when pulling on or forcing the wiper arms. Technicians should be aware that while replacement of the wiper blade may resolve some cases, correction of bent components or repositioning of the wiper arms, particularly when the retaining nut is loose, requires additional steps to ensure proper alignment and function.

11016235

The new AWD rear differential DOES NOT come with a breather cap on the rear of the differential, therefore a new one...

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will need to be ordered and installed when replacing the differential. NOTE: The breather threads have a sealant and locking compound that prevents it from being reused. Refer to GEPC for the correct part number of the Differential Breather. The instructions on MGSS will be updated soon to include replacing the breather when replacing the differential with a new unit.

11013659

Some customers may notice the front door window(s) do not open.

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This may be caused by the lower window cable corrosion and damage. To eliminate this concern, the following improvements have been made: The shape of the power window regulator pulley has been modified to prevent cable damage. The shape of the carrier plate has been modified to prevent the cable from being exposed to water/moisture.

11009639

Some vehicles may experience stains appearing on the hood, roof and/or trunk of the vehicle.

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This concern is most likely to be found in a cold weather areas just after the RAPGARD is removed at PDI. This may be caused by moisture which has been trapped and condensed between the paint and the RAPGARD. These types of stains can be removed with a heat gun or an infrared drier. If you encounter this concern during PDI, use a heat gun or an infrared drier to apply heat to the affected area to remove the stain(s).

11007022

Some vehicles may experience exterior trim heat damage such (melted, separating, etc.) when parked near a glass building or Low-E windows.

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This may be caused by the sun's reflection.

11006917

Some customers may complain that their liftgate does not open.

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This can mean a range of things, from the liftgate not unlatching to the power liftgate (PLG) not opening automatically. If you confirm that the customer's concern is that the liftgate does not unlatch correctly, follow the repair information below.

11003397

Some automotive cleaning products contain strong acid or alkali.

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When these types of cleaners are used to clean the wheels on Mazda vehicles, the chemicals contents penetrate the clear coating of the wheel surface and damage the paint under the clear coating. The damaged area has the appearance of dark stains or discoloration.

Other

13 bulletins
11026913

Some customers may experience a message "TCU Malfunction.

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Have the Vehicle Inspected" in the instrument cluster. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT

11024996

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11022718

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11019177

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11016237

Frequently Asked Questions (FAQ)

11014991

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11012345

Frequently Asked Questions (FAQ)

11008577

Some customers may complain about scratches on the instrument cluster lens.

11008572

Alexa Built-In Frequently Asked Questions (FAQ)

11008571

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11007013

Auxiliary key blank cutting procedure.

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There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method B. Auxiliary Key Code Cut Method

11006995

Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11005551

At PDI or when new vehicle is delivered, some customers may complain about wrinkles on the leather seat cushion and/or seat back surface.

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NOTE: This repair is not a permanent fix, it is meant to make new seats look their best when the vehicle is first presented to the customer. Wrinkles may not be completely removed after the repair is completed. Leather is a natural material and may develop some wrinkles due to aging and wear during normal useage.

Pre-Delivery & Maintenance

10 bulletins
11037632

DESCRIPTION Some customers may experience a message "TCU Malfunction.

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Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. NO: This service information does not apply. Continue troubleshooting using MGSS.

11037019

This Service Alert supersedes the previously issued SA(s) listed below.

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The changes are noted in Red text. SA-039/26 06/15/26 Mazda Connect Symptom Troubleshooting DESCRIPTION Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.

11037017

This Service Alert supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-012/26 04/17/26, 03/04/26 and 02/26/2026 DESCRIPTION Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT

11029531

This Service Alert supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-060/25 12/16/25 Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT

11026908

Mazda Connect Services - Frequently Asked Questions (FAQ)

11023700

Mazda Connected Services - Frequently Asked Questions

11021498

Mazda Connected Services - Frequently Asked Questions (FAQ)

11019178

Frequently Asked Questions (FAQ) for Mazda Connected Services.

11008580

Mazda Connect Services - Frequently Asked Questions (FAQ)

11008579

Mazda Connect Services - Frequently Asked Questions (FAQ)

Lighting

8 bulletins
11033447

This service alert supersedes the previously issued service alert listed below.

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The changes are noted in Red text. SA-047/25 10/07/25 DESCRIPTION When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated. CAUTION: DO NOT swap TCU with another vehicle as the TCU is VIN locked after activation. A TCU swap with another vehicle will disable Connected Services on both vehicles. If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact on the customer because they will need to return to the dealer for repairs. If the Telematics Control Unit (TCU) replacement is necessary, check "Vehicle Communication Line Status Reference" status detail first. The TCU can only be replaced under the following "Status Detail" conditions: Open Completed (OK) Closed Completed (OK) If the TCU is replaced under the following "Status Detail" conditions, the customer may not be able to enroll into the replacement TCU. Processing (NG) Request Failed (NG) Open Failed (NG) Flag Setting Failed TCU Activation 1. Install the new TCU.

11032103

This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red.

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SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle -specific manufacturer scheduled maintenance. Workshop Manual - Refer to section 00-00 SCHEDULED MAINTENANCE. Owner's Manual - Refer to section 8 Maintenance and Care. b. Note: Please refer to the information below outlining the services not included in Mazda's Factory Scheduled Maintenance: IMPORTANT: Recommending fluid flushes when not necessary can lead to customer confusion and dissatisfaction. Fluid flushing for preventive maintenance purposes is strongly discouraged, unless otherwise specified in a published procedure (Owners Manual, Workshop Manual, Technical Service Bulletin, etc.).

11028095

There are wrinkles on the leather seat cushion and/or seat back surface at PDI, when new vehicle is delivered, or when...

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new upholstery is installed under Warranty repair. NOTE: This repair is not a permanent fix, it is meant to make new seats look their best when the vehicle is first presented to the customer. Wrinkles may not be completely removed after the repair is completed. Leather is a natural material and may develop some wrinkles due to aging and wear during normal usage.

11023702

Interior parts made of resin have antistatic coating to prevent dust from sticking on the surfaces, and depending on the...

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conditions of use, the antistatic components may crystallize slightly, giving an appearance of white stains on the surface.

11013787

When performing the MGSS Workshop Manual 360 View Monitor System Aiming Procedure, M-MDS may show error message "Procedure unsuccessful".

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This may be caused by light glare on the SST.

11007018

Interior parts made of resin have antistatic coating to prevent dust from sticking on the surfaces, and depending on the...

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conditions of use, the antistatic components may crystallize slightly, giving an appearance of white stains on the surface. To remove the stains, wipe the stained surface with a towel soaked with water mixed with a small portion of a neutral detergent. If the white stains reappear again, simply wipe them again in the same way.

11005671

Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems.

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Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.

11003398

Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems.

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Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.

Transmission

8 bulletins
11026354

When inspected, the differential or PTO oil is dark or black.

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This is considered normal and NO repair should be performed. During production, differential ring and pinion gears receive a manganese phosphate coating (commonly referred to as black oxide). This coating forms a porous, oil-retentive surface that improves boundary lubrication and reduces adhesive wear during initial contact cycles. Designed as a sacrificial layer, it is gradually removed under load throughout the break-in process. As a result, after the first few hundred miles, or at the initial gear oil service interval, the lubricant may appear darkened by the worn-off coating. It will contain trace ferrous particles from the normal run-in of the gear teeth and bearing surfaces. This condition is expected and does not, by itself, indicate an issue with the differential or PTO gears.

11026350

Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is...

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essential to first classify the issue into one of three primary categories: Noise, Vibration, or Harshness. Many customer complaints may involve overlapping symptoms, such as both noise and vibration, so identifying the dominant characteristic is critical. Once the primary symptom is determined, follow the appropriate diagnostic path. For example, if a concern includes both noise and vibration but is related to vehicle speed, the vibration diagnostic path should be followed. When considering component replacement during the diagnostic process, it is best practice to start with the lowest cost or most accessible part unless diagnostic evidence clearly identifies a more expensive or complex component as the root cause. This approach helps minimize repair costs and avoids unnecessary part replacements. For example, a growling or bearing whine noise may be mistakenly attributed to internal components in the differential, transfer unit, or transmission, when the actual source is a wheel bearing. Misdiagnosis like this can lead to unnecessary repairs, added time and cost. To help prevent this, always follow the guidelines in the repair procedure.

11026347

There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer units and...

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transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional inconvenience and/or cost to the customer. To reduce the chance of this occurring, please follow the steps outlined in the repair procedure.

11017697

There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer units and...

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transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional inconvenience and/or cost to the customer. To reduce the chance of this occurring, please follow the steps outlined in the repair procedure.

11011141

Some customers may report concerns with interior upholstery surface stains particularly on high contact areas (e.g.:...

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seats, steering wheel, door panels, shifter...etc.). This may be caused by skin oils or chemicals such as hand lotions.

11009654

The SKYACTIV-DRIVE FW6A-EL AT uses Automatic Transmission Fluid (ATF) Type: FZ.

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Only use ATF-FZ to fill or top off the fluid level. ATF-FZ is specially designed for use in the SKYACTIV-DRIVE series AT. It is a low viscosity formula with less friction for better fuel economy. NOTE: ATF-FZ is colored blue for easy identification.

11007015

A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023, 2024 and 2025 models.

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ATF-A7 is an extremely low viscosity formulation with low friction to achieve best-in-class fuel economy and driving performance. For easy identification, ATF-A7 is colored Red and ATF-FZ is colored Blue. There is NO interchangeability between ATF-A7 and ATF-FZ.

10252507

Due to limitations, certain vehicles from 2016 to current models might display an inaccurate transmission part number in...

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the Global Electronic Parts Catalog (GEPC). To provide support in such cases, a temporary lookup guide has been developed for assistance.

Fuel System

6 bulletins
11033445

This SA supersedes the previously issued SA(s) listed below.

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The changes are noted in Red. SA-011/25 10/16/25 and 02/27/25 DESCRIPTION Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) was stuck closed and would not open to refuel the vehicle. Follow the repair steps below unless the conditions outlined in TSB 09-007/25 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2025 Mazda3 and 2020-2025 CX-30 are present. REPAIR PROCEDURE 1. Check for pry marks around the door opening. Are there any pry marks? YES: This is due to outside influence and is not covered by Mazda warranty. NO: Continue to the next step. 2. Check the fuel door lock operation. a. Lock the doors and verify if the fuel door lock is locking. NOTE: The default setting is a 90-second delay after the doors lock, but the customer can set that to 0, 30, 60, 90, or 120 seconds. b. Unlock the doors and verify if the fuel door lock is unlocking. NOTE: There is no delay to this function, but the fuel door must be locked to confirm it is unlocking. See the lock note above. Is the fuel door lock operation working correctly? YES: The fuel door repair IS NOT covered by Mazda warranty. The fuel door lock is OK and the door was damaged because the vehicle was not unlocked. NO: The fuel door repair IS covered by Mazda warranty. The fuel door lock is NOT OK and damage to the door was done in order to access the lock. NOTE: If the door was already broken when it arrived at the dealership, Mazda will pay for the fuel door repair under warranty if the vehicle does NOT have an emergency release. Mazda will NOT pay for the fuel door under warranty if it has an emergency release.

11026906

Some customers may experience that the fuel lid and charge lid do not lock or unlock during door lock/unlock operation.

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This is caused by: Improper dimensional accuracy of the lid actuator lock mechanism Incomplete control logic in the R-ESU software To eliminate this concern: The mold design of the lid actuator was modified. The control software of the R-ESU was revised.

11026099

Some customers may experience that after the doors are locked and the Fuel Door Lock Delay with MAZDA CONNECT has passed...

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(default setting is 90 seconds), the fuel-filler lid does not lock, but can be opened when pressed. NOTE: The fuel-filler lid does not lock immediately after the doors are locked, but after the time set in the Fuel Door Lock Delay (0, 30, 60, 90, and 120 seconds). Although the root cause has not been identified, the vehicle should be repaired by adjusting the fuel-filler lid opener cable position when there is a customer complaint.

11024995

Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) was stuck closed...

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and would not open to refuel the vehicle. Follow the repair steps below unless the conditions outlined in TSB 09-007/25 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2025 Mazda3 and 2020-2025 CX-30 are present.

11014983

Some customers will report that their fuel door was stuck closed and would not open to refuel the vehicle.

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Follow the repair steps below unless the conditions outlined in TSB 09-007/25 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2025 Mazda3 and 2020-2025 CX-30 are present.

11007024

Some customers will report that their fuel door was stuck closed and would not open to refuel the vehicle.

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Follow the repair steps below unless the conditions outlined in TSB 09-019/21 - FUEL-FILLER LID PANEL IS DEFORMED for 2019-2021 Mazda3 and 2020-2021 CX-30 are present.

Brakes

6 bulletins
11026353

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging.

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If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern. NOTE: Before following this Service Alert repair procedure, ensure published TSBs in MGSS have been completed per model year.

11013568

Some vehicles may exhibit a deformed fuel-filler lid panel (1) attached to the fuel-filler lid box, resulting in a poor appearance.

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This concern is caused by the lid box not having enough water drainage capability which leads to the accumulation of water inside it. The water then freezes in cold weather and expands or the inner side of the lid panel absorbs the water and swells from long exposure, deforming the lid panel. To eliminate this concern, the shape of the fuel-filler lid box has been modified to have better drainage capability and a modified fuel-filler lid panel service part has been established for less water absorbance.

11009644

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging.

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If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.

11008430

This information will give you the necessary knowledge to respond to customers concerns of Smart Brake Support (SBS) unintended braking.

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By educating the customer on the system operation, it should reduce their anxiety or distrust of the vehicle.

11007009

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging.

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If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.

11003396

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging.

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If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.

Software & Calibration

4 bulletins
11034292

COMPLIANCE WITH NEW YORK STATE GENERAL BUSINESS LAW 399CCCCC (CONNECTED VEHICLE SERVICE; DOMESTIC VIOLENCE VICTIMS)...

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DESCRIPTION This Service Information is issued in accordance with New York State General Business Law 399CCCCC (Connected Vehicle Service; Domestic Violence Victims). This regulation is intended to protect victims of domestic violence by allowing them to request the termination of third-party access (including access by an alleged abuser) to connected vehicle services, such as vehicle location tracking and remote control functions. To support this requirement, this Service Information enables confirmation of whether a vehicle is subject to connected vehicle services by referring to the SUBJECT VIN & PRODUCTION DATE RANGE, and provides guidance on the procedure to terminate such services when a customer requests the removal of third-party access for an applicable vehicle. Effective July 1, 2026, if a customer requests action under this regulation, a CMU/CDC software update must be performed to enable appropriate control of connected vehicle service access. If no request is made by the customer, the CMU/CDC software update is not required. REPAIR PROCEDURE 1. Confirm that the customer has requested deactivation of connected services in accordance with New York State General Business Law related action. 2. Perform the CMU/CDC software update according to the procedures outlined in the appropriate TSB shown in the table below:

11025009

When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement.

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Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.

11011140

When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement.

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Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.

11008578

When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement.

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Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.

HVAC & Climate

2 bulletins
11028127

Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to...

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be wet.

11020038

Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to...

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be wet.

Suspension

2 bulletins
11022618

Some vehicles may experience a sunvisor that does not stay in the fully retracted position (as shown below).

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The left and/or right side sunvisor may lower slightly due to its own weight. The part where the sunvisor connects is broken, so the spring cannot hold the sunvisor in the fully retracted position. To eliminate this concern, the stay holder and spring holder have been reinforced.

11016209

Some vehicles may experience a sunvisor that does not stay in the fully retracted position (as shown below).

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The left and/or right side sunvisor may lower slightly due to its own weight. The part where the sunvisor connects is broken, so the spring cannot hold the sunvisor in the fully retracted position.

Steering

2 bulletins
11013792

Before judging a steering wheel as having premature wear or a defect, first clean the steering wheel as explained in the repair information.

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Some vehicles may have steering wheel stains caused by chemicals such as hand lotions.

11007027

Before judging a steering wheel as having premature wear or a defect, first clean the steering wheel as explained in the repair information.

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Some vehicles may have steering wheel stains caused by chemicals such as hand lotions.

Tires & Wheels

1 bulletin
11028128

Some customers may complain that the tire sidewalls are distorted or "damaged".

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Sidewall waviness/indentations/undulations are common on radial tires and are more noticeable on tires with taller sidewalls. The higher the tire pressure, the more noticeable the effect will be. Be sure to set the tire pressures at the recommended tire pressure on the vehicle tire label. Sidewall indentations are a cosmetic condition that does not affect the performance of the tires.

Air Bags & Safety

1 bulletin
11011139

A customer may complain of a rattle noise from the right side of the dash.

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The noise may be coming from the passenger side airbag.

Hybrid & EV

1 bulletin
11008576

Qi Wireless Charger symptom troubleshooting.