2023 Maserati MC20 TSBs

seal installation process on V6 Nettuno engines. This added component helps ensure consistent, accurate positioning of the oil seal in its seat by compensating for dimensional gaps and seal tolerances. It also improves process reliability by helping maintain proper installation conditions, even when tool usage is not optimal.

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)

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

sweating.

This Bulletin requires a BOL to be opened as Support Request

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

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.

characteristics during tip-in/tip-out maneuvers with the accelerator pedal.

possible lower-level repair now available. Maserati also introduced a new Procedure available through the MDEVO called DCTM Service Fast Learn. This new routine could be used to address issues related to sticky valve and performs a purge cycle and a valve readaptation to address pressure related issues.

repairs.

installed on Maserati MC20 coup and Cielo versions. In case of oil leakage from the Differential Cover, it is now possible to replace only the O-rings instead of the complete gearbox.

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

update the ECM (Engine Control Module) software. This new software enhances the sleep mode of the exhaust pipe flap valve actuator, preventing loss of communication with the active exhaust valve. In rare cases, the engine could enter limp mode, and the MIL light can only be turned off after three key cycles.

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

stored in the ECM

compartment.

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.

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.

maneuvering.

In these cases, the Body Control Module (BCM) may not correctly align the expected timer behavior with the vehicles actual response time. This timing mismatch can interrupt the procedure and cause the remote start function to fail. A software update is required to correct the timer settings and ensure the Remote Start procedure completes successfully.

Rapid Update #819 MC20 BCM SW Update has been temporarily suspended. This decision follows the identification of potential Drive Mode Selector (DSCM) malfunctions observed on some vehicles after the execution of the RU 819 software update, which is currently under in-depth technical investigation by HQ.

after the execution of the RU 819 software update, which is currently under in-depth technical investigation by HQ. Effective immediately! Rapid Update #819 MC20 BCM SW Update has been temporarily suspended

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.

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

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

Initial analysis indicates that these sporadic issues are occurring on vehicles where the final target software has not yet been installed. Please note that some VINs included in CLR 740 require two separate FOTA updates to complete the campaign, as detailed in the VIN list provided in bulletin MAS004603. The second update can only begin after the first update is successfully completed. Additionally, several hours may pass before the second step is automatically triggered. This delay is dependent on vehicle usage and the availability of network coverage.

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

sensors.

MC20 DTC 81151B, 81141B Right/Left curtain airbag - circuit resistance over the threshold.

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.

BOL required. Airbag warning light on and storage in ORC of DTC 81151B Right curtain airbag - circuit resistance over the threshold or 81141B Left curtain airbag - circuit resistance over the threshold.

incorrect market's Traffic Sign Recognition configuation during production on certain vehicles.

phase and IPC service module removal.

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.

inside the seat slide guides.

Claims received after this date will no longer be accepted.

Update 585.

and a longer lifespan.

and a longer lifespan.

the correct gluing and, if necessary, restore the carpet that covers the door area. The upholstery may have been assembled in a way that caused the double-sided adhesive to improperly bond with the fabric portion of the carpet, potentially leading to detachment. The procedure involves carefully inspecting the area, and if any sections are found to be insufficiently adhered, applying a patch using a specially designed tape prepared for this purpose.

High effort in the opening/closing of the doors, noise on uneven roads, etc.)

This is an extension to service campaign 514.

This bulletin provides guidance to the Service Network on the procedure required to restore the seat strap button on MC20; this procedure avoids replacement of the complete seat.

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).

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

Includes GT2 Stradale During aggressive or high-intensity driving on the track, the braking system can reach extremely high temperatures. This may result in: Braking noise Vibrations Reduced braking performance

the seat guide rails on BOTH Driver and Passenger side seats. On some vehicles, the electronic seat movement may potentially stop when it reaches the end of its range, making it difficult to adjust the seat afterward. To avoid this issue, a spacer will need to be inserted in front of the limit switch to prevent the mechanism from reaching its absolute limit.

On some vehicles, the electronic seat movement may potentially stop when it reaches the end of its range, making it difficult to adjust the seat afterward. To avoid this issue, a spacer will need to be inserted in front of the limit switch to prevent the mechanism from reaching its absolute limit.

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 Bulletin serves as an ADDENDUM to MAS002731

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

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.

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.

improve download speeds.

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.

concerns.

and performance of the 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.

the correct tightening torque of the front suspension fasteners.

the newly available lowerlevel repair options. Gearbox diagnosis

Support for the MC20 gearbox will now be managed in close collaboration with the supplier of the components listed on the following page. This partnership allows us to quickly identify potential issues, reduce diagnostic times, and provide top-tier assistance and expertise to resolve cases efficiently.

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.

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.

could get stuck during operation.