2023 Maserati Grecale TSBs

This Technical bulletin serves as a guide and provides additional diagnostic info on the 12V Battery as well as new updated warranty policies and exceptions.

This update brings: A new user interface for the software update application. A cybersecurity layer that protects communication with diagnostic and update servers. Once installed, the cybersecurity layer runs in the background. The main change users will notice is how the software update client looks and behaves. To get the new update app, your diagnostic tools must complete installation of Jakarta 10.04.00 or higher.

VEHICLES INVOLVED: (M182) Grecale MY23, MY24 and MY25

ECU modules.

affecting the oil pump/sensor.

reactivation and the Intrusion Transceiver Module (ITM) software update.

to clarify how the EVO checks the availability of software updates for the ECUs installed in the vehicle.

19.2 on Grecale, GranTurismo, and GranCabrio models. This system automatically reduces power to non-essential electrical features to protect battery health and ensure vehicle stability, especially during low battery charge or charging system issues.

system on select Maserati models. It outlines steps to verify sensor condition, identify false alerts, and determine when replacement or further support is necessary.

The DC/DC converter manages the energy flow between the 12V system and the 48V Belt Starter Generator (BSG/MCPA).

next Key-On after Key-Off cycle, normal behavior may be misinterpreted as a fault. Beginning with BCM software release 19.2 (March 2024), the Load Shed Function was introduced. This system is not a malfunction but an intentional feature that manages the 12V battery State of Charge by temporarily disabling or limiting non-essential functions. The goal is to reduce unnecessary discharge and preserve battery health. Examples include: A/C system Heated seats / heated steering wheel Mirror and rear window defroster Interior lights / ambient lights Head-up display Easy entry/exit

(Telematics Box Module) system in Grecale, GranTurismo, and GranCabrio models. It outlines specific concerns associated with DTCs and step-by-step procedures to ensure accurate diagnosis and effective resolution of connectivity, communication, and hardware-related concerns. MODELS AFFECTED: M182 Grecale 2.0 L4 MHEV and M189 GranTurismo(All MY).

update the software on multiple ECU modules. Over the past year, we have dedicated significant efforts to enhancing the functionality of our cars, according to reports and suggestions from our customers. We have observed that sometimes, certain important actions are not carried out, despite all campaigns being mandatory. We understand that this modernization effort requires considerable dedication, but it is essential for us to prioritize customer satisfaction. We recognize that amidst daily tasks, it can be challenging to keep track of various circular letters. Therefore, we have consolidated some of them, ensuring that you have all the instructions in a single bulletin

updated warranty policies and exceptions.

to clarify how the EVO checks the availability of software updates for the ECUs installed in the vehicle.

update the VDCM (Vehicle Dynamics Control Module) software. This new software modifies the behavior of the air compressor, preventing the DTC 55A100 (unable to obtain desired ride height) set in VDCM and avoiding unwanted lowering of the vehicle.

MODELS: M157, M161, M182. MHEV vehicles only. All MYs.

Certain Maserati Grecale ICE, MHEV and BEV(M182) MY23 MY24 MY25 listed in MODISCS+ are involved in a Rapid Update to update the VDCM (Vehicle Dynamics Control Module) software. This new software modifies the behavior of the air compressor, preventing the DTC 55A100 (unable to obtain desired ride height) set in VDCM and avoiding unwanted lowering of the vehicle.

This Technical bulletin serves as a guide and provides additional diagnostic info for possible DTCs related to the ORC module.

As indicated in the bulletin MAS003379, it is mandatory to periodically check the SOC (State of Charge) of batteries stored or installed on in-stock vehicles

front door panel wiring on Grecales.

emergency call module

sensors.

This diagnostic sheet requires a BOL under Support Request to be opened.

update the software on multiple ECU modules

wiring harness routing and installation. The procedure therefore consists of checking the positioning of the wiring and the possible repositioning of the fastening strap to avoid any type of interference event at a later time.

To help maintain battery peak condition, and ensure optimal performance, this bulletin covers important warranty policies, and guidelines for testing, maintenance, and diagnosis of batteries using the new E-XTEQ MAXIMUS battery charger/tester. Please refer to the most recently published BOL Policy and Prior Approval Components List to verify if a BOL Report is required for battery replacement.

malfunctions related to the management of the TBM module (emergency call module).

stored in the ECM for abnormal exhaust noise.

ECM.

the CVPAM module from the vehicles 12V battery.

when ECU temperature is high.

To correct a potential issue with the wireless charger that can cause interefernce during the keyfab search process.

warining indication.

vehicles 12v battery.

could disturb the use of touch screen.

phase and IPC service module removal.

This update is a general improvement of the system.

Due to a regression via the new ITM SW 2.05, an improper behavior of the Volumetric Alarm could affect the Premium Alarm System (LSA opt) which could cause an abnormal power draw and potentially drain the 12V battery.

version.

periodic battery checks, Pre-Deivery inspection checklist.

Please be advised that the Rapid Updates listed in the attachment will be closed effective October 31, 2026. From that date onward, claims submitted with Cost Code 23 will no longer be accepted. In addition, effective from the date of this communication, the Mandatory status will be removed from all listed campaigns to facilitate their management during the period preceding closure. We kindly ask you to review the attached list and plan the necessary activities to ensure proper campaign closure. For any questions or support, please contact your RAM. Thank you for your cooperation. TECHNICAL SERVICE OPERATIONS Campaign Number 736: M182 Front Suspension Caster Rods Replacement 748 MC20 Front suspension knocking noise 769 MC20 Doorsill Carpets 10/31/2026 790 MC20 Passengers Seat Stuck NA 10/31/2026

This bulletin provides guidance to the service network regarding the checks to be performed on the turbocharger when the only symptom reported is a whistling noise during acceleration. This communication originates from several cases where the noise was not caused by the turbocharger itself, but by the gasket located between the turbocharger and the cylinder head.

when certain electrical symptoms are present. It describes how to access the area beneath the FDU and identify the specific harness segment that requires attention. If issues are found, it outlines the approved wiring repair and proper harness repositioning to help prevent future concerns.

rear differential unit seals on half shafts

to BSG failure (due to coolant contamination). Grecale MHEV (All MY)

The issue is related to exhaust valve behavior and has been resolved with a now available software update.

The purpose of this procedure is to confirm leaks with clear evidence, prevent unnecessary component replacement, and ensure accurate diagnosis.

The intervention is intended to address a knocking noise that may occur during lowspeed directional changes (Drive to Reverse and vice versa). The procedure outlined below aims to eliminate the noise by reconditioning the flange-to-shaft interface and ensuring correct component alignment and lubrication.

LIST 1 batch Campaign Number Campaign Description Closure Date 517 MCA TBM FOTA update 4.34 SQDF missing data 20/10/2025 529 MC20 MY22 coolant leakage from water pump (idler replacement) 20/10/2025 549 M161 V8 cavo motore L 20/10/2025 576 MC20 Door striker baseplate detachment 20/10/2025 585 MC20 MY22 Half Shafts Replacement 20/10/2025 Field Action LIST 2 batch Campaign Number Campaign Description Closure Date 643 M240 sbiancamento guarnizione porta 12/12/2025 669 M189 Air Spring check 12/12/2025 684 M189 Leak from Air Spring - Extension 12/12/2025 689 M182 RFHM Repositioning 12/12/2025 705 M240 Tremec transmission leak 12/12/2025 712 M189 M190 MY24 - Air Suspension Full Customer Protection (ALLUMINUM SOL) 12/12/2025 715 M189 Multi-SW Updates Regrouping (BCM-CVPAMPLGM-BSM-ICS-IPC) 12/12/2025 720 M240 DCSD SW Update 12/12/2025 724 M240 ECM SW Update 12/12/2025 725 M189 M190 Multi-HW 12/12/2025 726 M182 Door to body 12/12/2025 727 GC Wrong TBM EMEA-NAFTA 12/12/2025 728 M189 BEV - Front HalfShaft screws loosening 12/12/202

concerns in the low-pressure fuel pump on all Maserati models equipped with internal combustion engines (ICE).

It helps technicians understand what is normal during initial operation, what needs attention, and how to decide if the pump should be replaced.

The bearing can now be replaced individually, eliminating the need for complete engine or long block replacement when noise is traced to this component. Models Involved: Grecale V6 (All MY) GranTurismo V6 / GranCabrio V6 (All MY) MC20 / MC20 Cielo / MC20 Pura (All MY)

It contains updated information, please ensure all previous versions are discarded. The new MY23 Grecale SUV, developed at Maserati Innovation Lab in Modena, is a range within the range, the most complete and innovative ever in the House of the Trident. The range of available engines varies from the traditional combustion to the hybrid engine and includes three launch versions: GT, powered by a 4-cylinder Hybrid capable of developing 300 HP, Modena with a 330 HP 4-cylinder Hybrid engine, and the powerful Trofeo, equipped with a performing 530 HP 3.0L V6 engine, derived from the Neptune engine which equips MC20. Topics covered in this Bulletin: Taking charge of the vehicle and periodic checks. Indications of best practices and technical notes for the Grecale Service. Pre-Delivery inspection checklist. Activation of the technical team. Unveiling tech-doc/diagnosis and special tools. Please read and review this bulletin first before starting the procedure. Contact your Regional AfterSales Manager (RAM) or the Technical Support Helpdesk if you have

updated warranty policies and exceptions. MODELS AFFECTED: Grecale M182 (All MY), GranTurismo/GranCabrio M189 (All MY) (internal combustion engine and Folgore BEV vehicles) SECTION: 08.20-1 Energy generation and accumulation

If resolved through the outlined procedure, the vehicle can be returned to the customer without extended downtime. TechDocs Section: 01.30-1 Supercharging System: Equipment Model: Grecale MHEV (All MY)

This validated process is intended to avoid unnecessary. replacement of the entire exhaust silencer assembly. Affected Models (All Model Years) - Quattroporte, Ghibli, and Levante V8 engines only - MC20 Coup/Cielo (M240) with black exhaust finish - Grecale (M182) with black exhaust finish

The issue is related to exhaust valve behavior and will be resolved through a future software update. MILD HYBRID ONLY

sweating.

If a fluid leak is detected at the connection point of the delivery pipe, it is now possible to replace only the affected pipe using a dedicated repair kit, instead of replacing the entire engine compartment wiring harness.

This Bulletin requires a BOL to be opened as Support Request

This Bulletin requires a BOL to be opened as Support Request.

A few important guidelines for the technical management of the New Maserati Grecale are set out in this letter. Maserati Grecale represents the right balance between versatility, elegance, performance, and innovation, guaranteeing services, comfort, and safety at the same time; features that combine with off-road capabilities and steadfast driving pleasure. The new MY23 Grecale SUV, developed at Maserati Innovation Lab in Modena, is a range within the range, the most complete and innovative ever in the House of the Trident. The range of available engines varies from the traditional combustion to the hybrid engine and includes three launch versions: GT, powered by a 4-cylinder Hybrid capable of developing 300 HP, Modena with a 330 HP 4-cylinder Hybrid engine, and the powerful Trofeo, equipped with a performing 530 HP 3.0L V6 engine, derived from the Neptune engine which equips MC20.

Notification (CSN) to update the Engine Control Module (ECM) software update

These instructions should be followed by the personnel responsible for managing Maserati vehicles prior to their final sale to customers. The updates pertain to the maintenance and care of MHEV vehicles equipped with lithium-ion batteries, as well as notes on routine maintenance to be conducted according to the Service Schedule (including engine oil). Additionally, new policies for checking the 12V battery state of charge, applicable only to Grecale, are also outlined.

(CSN) to update the Engine Control Module (ECM) software update. This update is needed to improve the ECM software calibration, following the best practice about battery SOC targets and Start & Stop threshold. As consequence the Customer may not be able to start the vehicle. This software update is part of an improvement strategy to optimize the electric behavior of the vehicle. Note that some MY23 vehicles also need to update the Transmission Control Module (TCM) module, Although there are no reported issues impacting the TCM, the implementation of new ECM software requires the TCM software to be updated as well for compatibility reasons.

repairs.

(CSN) to update the Engine Control Module (ECM) software update. This update is needed to improve the ECM software calibration, following the best practice about battery SOC targets and Start & Stop threshold. As consequence the Customer may not be able to start the vehicle. This software update is part of an improvement strategy to optimize the electric behavior of the vehicle. Note that some MY23 vehicles also need to update the Transmission Control Module (TCM) module, Although there are no reported issues impacting the TCM, the implementation of new ECM software requires the TCM software to be updated as well for compatibility reasons.

Please refer to Bulletin MAS004175 PNP 24-01 Light Engine - Long Block Repairs Under Warranty for further information.

Please refer to Bulletin MAS004175 PNP 24-01 Light Engine - Long Block Repairs Under Warranty for further information.

Claims received after this date will no longer be accepted. Effective from the publication date of this document, the Mandatory Flag will be removed for all campaigns listed, allowing for easier management as we approach the closure period. Campaign Number Campaign Description Closure Date 514 MC20 MY22 Radiator pipe coolant leakage 11.18.2024 550 M157 V6 Engine Harness Position Check 11.18.2024 574 MC20 Interior Handle Replacement 11.18.2024 575 M182 Air suspension Leak Check 11.18.2024 590 MC20 Door Latch Noise 11.18.2024 596 MC20 Cielo PTCM SW Update 11.18.2024 618 M182 - Radio R1H FOTA SW UPDATE (S27.28) 11.18.2024 646 MC20 Side Mirror Check 11.18.2024 649 MC20 Radiator pipe coolant leakage (ext 514) 11.18.2024 655 MC20 AC pipe connection check 11.18.202

to ensure the highest quality during this operation. This tool allows for the first-time replacement of individual lower injector O-rings on L4 MHEV engines. Now, instead of replacing the entire rail, you can simply replace the O-rings using Kit 673012512

message on cluster on Maserati Grecale models.

misfires or irregularities, highlighting the importance of refraining from disassembling the Central (Pre-Chamber) spark plugs unless instructed to do so.

P1066 related to the Multiair solenoid valve.

A wrong tightening torque has been applied in production with potential electrical issues on the vehicle and Hybrid system malfunction or in some case the complete discharge of the 12V battery. The remedy will require the inspection of four nuts located in the trunk and engine compartments, restoring the correct tightening torque.

characteristics of the driveshaft Flex Disc and to recognize which condition of this component is considered compliant and therefore avoid unnecessary replacements.

The previous pink coolant and the new purple coolant are fully compatible and may be mixed without affecting coolant quality, performance, or system behavior.

The goal is to quickly identify potential damage to the front camera bracket, avoid unnecessary downtime, and ensure the appropriate corrective action is taken.

Follow this procedure when requested or when analyzing the root cause of a fastener-related issue.

and to recognize which condition of this component is considered compliant and therefore avoid unnecessary replacements.

entry anomalies.

to perform a tightening torque check, in the case it is needed or requested. In order to allow a proper and effective analysis of the defective route cause.

This Diagnostic sheet requires a BOL to be opened as a Support Request.

linings that can be mistakenly addressed as a product defect.

Its purpose is to provide comprehensive guidance and support in identifying and troubleshooting issues related to the keyless starting system.

on M182 Grecale ICE vehicles (all model years). The procedures outlined are intended to assist technicians in accurately identifying and correcting axle shaft and wheel hub related noise concerns that may be present during lowspeed operation, reversing, or initial vehicle launch.

on M182 Grecale ICE vehicles (all model years). The procedures outlined are intended to assist technicians in accurately identifying and correcting axle shaft and wheel hub related noise concerns that may be present during lowspeed operation, reversing, or initial vehicle launch.

condition on M182 Grecale ICE vehicles (all model years). The procedures outlined are intended to assist technicians in accurately identifying and correcting axle shaft and wheel hub related noise concerns that may be present during lowspeed operation, reversing, or initial vehicle launch. Not applicable to BEV versions.

suspension system on Maserati Grecale vehicles equipped with Skyhook or Air Suspension. It guides technicians through specific tests to confirm whether the suspension settings are functioning correctly and how to collect data for further support

Effective immediately, Rapid Update 788 is suspended until further notice. We are temporarily suspending Rapid Update #788, originally launched to address potential USB trim detachment in the center console compartment, due to a significantly higher-thananticipated demand for spare parts.

Grecale equipped with an Air Suspension System. ATTENTION! This bulletin supersedes MAS004672 DS 25-08 released on April 4, 2025. This bulletin has been updated with new diagnostic info. Please discard/remove all copies of the previous bulletin.

Grecale equipped with Air Suspension System. ATTENTION! This bulletin supersedes MAS004471 RU 25-09 released on December 17, 2024. This bulletin has been updated with new diagnostic info. Please discard/remove all copies of the previous

GranTurismo and some Grecale equipped with Air Suspension System.

Granturismo and OPT for Grecale) that improves the ride, comfort, and the vehicle handling in all conditions to maximize the Maserati driving experience.

leaks.

to maximize the driving experience.

This intervention is necessary because, on a limited number of vehicles, the air pipe coupling may have contamination which can cause improper sealing and possible air leak from the joints.

his action contains an active diagnosis to be performed with the MD-Evo to correct the debouncing time when the start button is pressed, to avoid potential and very seldom missing vehicle starting.

This intervention is necessary due to a potential incomplete connection at the plant which could cause disconnection during the first activation.

the USB port in the center console. Some trims may have weak or damaged retaining clips, which could cause them to detach. This is only a cosmetic issue it does not affect vehicle safety or fu.nction

the USB port in the center console. Some trims may have weak or damaged retaining clips, which could cause them to detach. This is only a cosmetic issue it does not affect vehicle safety or function

the USB port in the center console. Some trims may have weak or damaged retaining clips, which could cause them to detach. This is only a cosmetic issue it does not affect vehicle safety or function.

Previously, if there was an issue with the center console compartment doors, the complete assembly had to be replaced. It is now possible to replace individual components instead of the entire unit.

Under certain conditions, the RFMH system may encounter signal reception issues, resulting in errors and inconveniences for the customer. These may include difficulties in opening doors or the rear hood, despite proximity and the key being readily available. The procedure utilizes a set of components designed specifically for relocating the RFHM antenna from the original position to a position that improves signal visibility.

both rear "Door to body" connectors. Some vehicles may have been fitted with a protective weather seal boot on the body-to-door connectors that may not ensure proper insulation against moisture infiltration. To address this, a rework has been devised: taping the boot to the connector to prevent any potential moisture infiltration.

Under certain conditions, the RFMH system may encounter signal reception issues, resulting in errors and inconveniences for the customer. These may include difficulties in opening doors or the rear hood, despite proximity and the key being readily available.

switch from kph to mph by itself and noise with turn indicators on.

body.

It aims to help technicians distinguish between acceptable oil sweating and genuine component leakage requiring corrective action. MODELS INVOLVED: ALL (All MY).

software in several modules to improve electrical absorption. This electric absorption improvement can be reached by updating the following modules all in one shot: BCM (Body Control Module) RFHM (Radio Frequency HUB Module) SLML (Smart Lighting Module Right) SLMR (Smart Lighting Module Left

MY24 MY25 listed in MODISCS+ are involved in a Rapid Update to update the software in several modules to improve electrical absorption. This electric absorption improvement can be reached by updating the following modules all in one shot: BCM (Body Control Module) RFHM (Radio Frequency HUB Module) SLML (Smart Lighting Module Right) SLMR (Smart Lighting Module Left

mistakenly identified as defective. It establishes criteria for inspecting and diagnosing shock absorbers for potential leakage to help prevent the unnecessary replacement of non-defective components

This action is necessary to prevent the potential appearance of multiple warning lights on the instrument cluster during the initial key-on. In rare cases, a firmer brake pedal feel may occur.

This Bulletin serves as an ADDENDUM to MAS002731

released (not pressed) concern.

spontaneous activation of the volumetric alarm and an abnormal power absorption that could potentially drain the 12V battery.

power absorption that could potentially drain the 12v battery.

This action contains an active diagnosis to be performed with MD-Evo to change the Passive Entry proximity area, improving the electrical absorption of the vehicle.

This validated process is intended to avoid unnecessary replacement of the entire exhaust silencer assembly

Affected Models: M182 MHEV and V6 (All MY)

no longer guarantee the repair of the hardware, therefore the swap service (Warranty repair/replacement exchange) may be discontinued during 2025 following the exhaustion of replacement components in stock.

his Diagnostic Sheet serves as a guide and provides additional diagnostic info for the Low fuel pressure Fuel pump on Grecales.

noise anomalies

anomalies.

GranTurismo, and GranCabrio.

The goal is to confirm proper operation of the inflation/deflation cycle and, if necessary, replace the lumbar support.

Claims received after this date will no longer be accepted. 243 275 288 294 306 326 332 333 337 348 353 355 364 366 371 374 379 385 388 390 395 400 447 448 449 451 452 460 461 462 468 471 477 481 484 520 522 523 540 544 546 565 566 587 588 593 595 600 603 607 610 611 615 642 10272 10364 10443

Claims received after this date will no longer be accepted. Effective from the publication date of this document, the Mandatory Flag will be removed for all campaigns listed, allowing for easier management as we approach the closure period

Claims received after this date will no longer be accepted. Effective from the publication date of this document, the Mandatory Flag will be removed for all campaigns listed, allowing for easier management as we approach the closure period.

seats.

version U39.19.

during Pre-Delivery Inspection (PDI). This ensures that the installed maps correspond to the vehicles destination country. MODELS AFFECTED: All Maserati models equipped with the factory navigation system.

displayed in the cluster (IPC).

This Diagnostic Sheet serves as a guide and provides additional diagnostic info for possible abnormal door speaker noise anomalies.

anomalies.

a black screen under certain conditions.

improve download speeds.

involving the high-pressure fuel pump area or the associated high-pressure fuel lines previously required removal of the complete powertrain assembly.

This update enhances PRND (Park, Reverse, Neutral, Drive) button responsiveness and simplifies their operation, improving the customer experience. The update is intended to: Address customer concerns related to button responsiveness Reduce AGSM module replacements to only cases with confirmed internal faults or complete non-functionality Limit Blue On Line (BOL) reports to only critical cases

Models affected: Grecale (M182) - MY23 MY24 MY25 GranTurismo (M189) GranCabrio (M190) - MY24 MY25 The software update is intended to optimize the sensitivity of the PRND controls, preventing potential issues where the desired gear may not engage without repeated button presses. The updated software ensures a more precise and immediate response from the gear selection system.

Certain Maserati Grecale (M182) MY23 MY24 and MY25 listed in MODISCS+ are involved in a Rapid Update to update the AGSM (Automatic Gearbox Shifter Module) software. This action is necessary to prevent the Park button from potentially getting "stuck ON" or the inability to shift the gear out of "P." This issue could prevent the vehicle from being moved and may result in DTCs P07BE-00/1E1700 being stored in the AGSM.

These tools are mandatory and will be listed in the ModisCS+ Special Tools Catalog. Please also note that this catalog lists all the special tools already in use that are compatible and required for vehicle maintenance. Therefore, it is important to check this section to ensure the tools are available in your workshop.

deterioration of premium interior components (leather, wood and carbon fiber).

Grecale models.

steering wheel of certain Maserati vehicles. For repairs or replacements, the button assembly can now be serviced independently, without replacing the entire steering wheel. These buttons are available as individual sub-components, enabling targeted replacement.

interefernce from the plastic covering of the steering switch.

could get stuck during operation.

rolling circumference, please note that a Proxy update is always required to adapt the Vehicle Configuration to the new wheel/tire combination fitted to the vehicle. Also remember that the required pressure can be different depending on the size of wheel rims/tires.

TPMS anomalies.

It is intended to help correctly identify compliant components and avoid unnecessary part replacements.

the DC/DC converter of the MHEV versions.

BEV vehicles) MY25 version for all vehicles, Hard Reset function (Active Diagnosis), specs update, general improvements.

It includes checks for remote locking/unlocking, passive entry, proximity functions, and key detection during vehicle start-up, along with guidance for documenting and reporting unresolved cases.

suppliers of the main components of Maseratis cars to promptly intercept potential issues, reducing diagnosis times and providing maximum assistance and know-how for the resolution of our clients cases. Through the direct support of professional technicians, the Aftersales Tutorship Team with the supervision of the HQ Blue on Line Team will be able to carry out detailed diagnosis on reports coming from the network. If an intervention on a component under Tutorship is needed (see Tutorship List attached), you will have to create a Blue on Line as a Support Request. Its important that you accurately follow the instructions that you will receive and do not replace a component without authorization.

This Diagnostic Sheet requires a BOL to be submitted. MODELS: Grecale, GT/GC, MC20 (All MY) WHEN DEALING WITH HVAC CONCERNS SUCH AS AC NOT BLOWING COLD, DO NOT ASSUME IT IS DUE TO LOW REFRIGERANT.

better timing to reach the target temperature.

the belt is released suddenly in a lateral direction. Maserati is actively developing a permanent solution to address this issue in future retractor designs.