2025 Maserati Granturismo TSBs

If the door window loses calibration, the automatic window raise function is disabled and door opening may be delayed by approximately two seconds. Repeated door-opening requests may also cause the window to make several short drops. Maserati S.p.A. is developing a dedicated software update to improve vehicle operation during this recovery condition and reduce the door-opening delay. The software update is expected to be available by the end of 2026.

In case of unexpected alarm activation, proceed with software updates to the BCM ECU, with Software Number F188 670363089 ROW. In order to obtain the compatibility of this SW and to complete all the necessary steps and procedures with MDEVO, it is mandatory to open a BOL as Support Request. After updating the software to the version mentioned above, perform the BCM procedure 'BCM Initialization.

Update involving inspection and, if necessary, correction of the proper routing of the oil sensor wiring harness located near the alternator.

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.

VEHICLES INVOLVED: (M189) GranTurismo BEV MY24, MY25 (M190) GranCabrio BEV MY24, MY25 (M182) Grecale BEV MY25, MY26 A new OBCM software update has been released to ensure proper charging system operation. This update replaces outdated software versions that may lead to potential charging-system concerns. We remind you that all the Rapid Updates must be performed within the first workshop visit, regardless of the Mandatory setting set in Modis, as required by Maserati policies.

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.

Module) system on Maserati Grecale, GranTurismo, and GranCabrio vehicles. It includes detailed procedures for identifying and resolving issues based on specific customer concerns.

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.

Indications of best practices and technical notes for Service. Pre-Delivery inspection checklist. Activation of the technical team. Unveiling tech-doc/diagnosis and special tools.

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).

updated warranty policies and exceptions.

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

emergency call module

sensors.

to update the VDCM (Vehicle Dynamics Control Module) software. The old software may perform a wrong DTC diagnosis. In very few cases, the DTC P0F0300 - Intermittent Hybrid/EV Battery Module 4 Performance could be set and the error message Electrical system malfunction could appears on the cluster. As consequence the maximum vehicle speed could be limited to 100km/h (turtle mode active).

The MASERATI E-XTEQ Maximus must be used to perform a load test on the 12V battery within 48 hours before the vehicle's delivery to the final customer.

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.

the OBCM (On-Board Charger Control Module) software. A limited number of vehicles require the OBCM module to be updated to resolve a potential issue that may cause a malfunction in the charging system, which can only be temporarily resolved by unplugging and re-plugging the charger.

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.

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

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.

linings that can be mistakenly addressed as a product defect.

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).

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)

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

This update supersedes the previous circular letter MAS003504 and includes additional content related to the new GranCabrio. Our new Parts & Service mission is dedicated to ensuring a unique experience for our customers. This letter outlines important guidelines for the technical management of the new Maserati GranTurismo and GranCabrio. Developed at the Maserati Innovation Lab and manufactured at the Mirafiori Plant in Turin, the GranTurismo and GranCabrio are 100% made in Italy and embody Maserati's "Italian luxury performance" concept. Both models feature the revolutionary Neptune V6 engine in two variants: the Modena version with a 3.0-liter V6 Neptune Twin Turbo delivering 490 hp, and the highperformance Trofeo version based on the same engine, achieving a peak output of 550 hp.

sweating.

This Bulletin requires a BOL to be opened as Support Request

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

verify the correct amount of oil in the front and rear powertrains (EDM). A procedure has been implemented to check the engine oil level. If the oil level is within the specified range, the engine is considered OK. However, if it is not, a full replacement will be required as a precaution. Only the front or rear powertrain will be inspected, depending on the vehicle. The VIN list clearly indicates which type of check should be performed.

We are now requesting that the Valve B check be repeated **five times** instead of once. Additionally, an improvement has been implemented on the MD-EVO to make the test cycle easier to perform.

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.

repairs.

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.

On a limited batch of vehicles, the front axle shaft screws may not meet manufacturing standards which consequently can cause an oil leak. To remedy this, The half shaft screws including the retaining plate will need to be replaced

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

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

involves software updates to multiple modules. This electric absorption improvement can be reached by updating the following modules during the same intervention: BCM (Body Control Module) RFHM (Radio Frequency HUB Module) SLML (Smart Lighting Module Right) SLMR (Smart Lighting Module Left

As recently communicated in Rapid Update #658 669 684 712 regarding the need to replace the front shock absorbers on the new GranTurismo vehicles, we would like to remind you that, starting from last July 2024, the components available from our network are identified, for internal supplier reasons, with two different series of part numbers.

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

update the BSM (Braking System Module) software. 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

absorbers

GranTurismo, and GranCabrio.

In some cases, the terminals orientation may require adjustment to ensure optimal clearance and routing. Performing this check helps support reliable cooling system operation and avoids potential contact with nearby components. The update consists of a visual inspection and, when applicable, repositioning of the terminal.

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.

replacement, eliminating the need to replace the complete central tunnel assembly.

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).

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.

additional diagnostic info for possible Air suspension issues on GranTurismo and GranCabrio equipped with Air Suspension System. All Air Suspension concerns require a BOL to be opened with the included checklist attached (last page). 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.

Certain Maserati vehicles listed in MODISCS+ are involved in a Rapid Update to inspect and possibly replace the rear trunk lock cover.

carry out a door adjustment procedure for interference with the fender. his action is necessary because, on a limited number of vehicles, the Flush & Gap between the door and the hood of the vehicle is incorrect with the risk of interference with the fender

for GranTurismo.

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.

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

GranTurismo, and GranCabrio.

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.

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.

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.

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.

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.

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.

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