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Service bulletins for the 2024 Maserati Grancabrio

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

68 on file from NHTSA, as of 2026-10-19.

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By component

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Bulletins, newest first
MAS004896 MTB 25-362025-10-15. Other. UNKNOWN OR OTHER. The purpose of this bulletin is to inform dealers about the possible logging of false Diagnostic Trouble Codes (DTCs) on the DSM and/or PSM ECUs in certain GranCabrio vehicles. These DTCs do not indicate any functional issue and do not affect system performance.
MAS004849 MCL 25-472025-10-15. Other. UNKNOWN OR OTHER. Introduction to the new Maserati GranTurismo & GranCabrio This document includes in detail: • Vehicle maintenance and periodic battery checks. • 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.
MAS004864 MTB 25-332025-10-02. Other. UNKNOWN OR OTHER; ENGINE. This bulletin introduces the serviceability of the oil pump bearing on the V6 Nettuno engine. 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)
MAS004875 MCL 25-442025-09-30. Other. UNKNOWN OR OTHER. The purpose of this communication is to clarify the correct procedure for checking the navigation system map version during Pre-Delivery Inspection (PDI). This ensures that the installed maps correspond to the vehicle’s destination country. MODELS AFFECTED: All Maserati models equipped with the factory navigation system.
MAS004817 MTB 25-342025-09-30. Other. UNKNOWN OR OTHER. he purpose of this communication is to inform Maserati dealers that, in certain vehicle functions deactivated at the 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
MAS004868 DS 25-282025-09-15. Other. UNKNOWN OR OTHER. This Diagnostic Sheet serves as a guide and provides a diagnostic path to help determine the root cause of certain HVAC concerns. 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.
MAS004831 MTB 25-322025-09-15. Other. ENGINE; UNKNOWN OR OTHER. A new software update is now available for the AGSM (Automatic Gear Shift Module) on Grecale, GranTurismo, and GranCabrio vehicles. 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
MAS004847 RU 25-232025-08-18. Other. UNKNOWN OR OTHER. This bulletin provides instructions for inspecting the cooling fan terminal positioning on certain Maserati GranTurismo and GranCabrio vehicles. In some cases, the terminal’s 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.
MAS004834 DS 25-272025-08-18. Other. SUSPENSION; UNKNOWN OR OTHER. This document outlines the correct diagnostic and evaluation procedure when oil traces or leakage are observed on front or rear shock absorbers. It aims to help technicians distinguish between acceptable oil sweating and genuine component leakage requiring corrective action. MODELS INVOLVED: ALL (All MY).
MAS004769_A DS 25-292025-08-18. Other. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. 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. 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
MAS004818 DS 25-242025-08-01. Other. UNKNOWN OR OTHER. This bulletin provides a diagnostic checklist to identify, troubleshoot, and resolve issues related to the TBM2 (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).
MAS004789 DS 25-192025-07-18. Other. ENGINE; UNKNOWN OR OTHER. This diagnostic sheet is intended to assist technicians in identifying and differentiating engine oil leaks and sweating.
MAS004778 RU 25-152025-06-30. Service campaign. UNKNOWN OR OTHER. Certain Maserati GranTurismo GranCabrio (M189) MY24 MY25 listed in MODISCS+ are involved in a Rapid Update that 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
MAS004774 RU 25-172025-06-30. Service campaign. POWER TRAIN; UNKNOWN OR OTHER. Certain Maserati vehicles are involved in a Rapid Update to update the AGSM (Automatic Gearbox Shifter Module) software. 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.
MAS004769 DS 25-182025-06-30. Other. UNKNOWN OR OTHER. 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.
MAS004330 MCL 25-312025-06-30. Other. UNKNOWN OR OTHER. The Rapid Updates (Campaigns) in the list below will be closed starting from June 16, 2025. 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
MAS004589_A MTB 25-222025-06-17. Service bulletin. UNKNOWN OR OTHER. This bulletin provides clear instructions on how to perform a proper tightening torque check. Follow this procedure when requested or when analyzing the root cause of a fastener-related issue.
MAS004438_A MTB 25-162025-06-17. Service bulletin. ENGINE; UNKNOWN OR OTHER. This Technical bulletin serves as a diagnostic guide for managing oil leaks and instructing related repairs. This Bulletin requires a BOL to be opened as “Support Request”
MAS004757 DS 25-162025-06-02. Service bulletin. UNKNOWN OR OTHER. This Diagnostic Sheet serves as a guide and provides a diagnostic path to help determine the root cause of certain HVAC concerns.
MAS004711 MCL 25-252025-06-02. Service bulletin. UNKNOWN OR OTHER. The Rapid Updates (Campaigns) in the list below will be closed starting from May 12, 2025. 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
MAS003730_A MTB 25-172025-06-02. Other. UNKNOWN OR OTHER. The purpose of this communication is to provide a guideline concerning the execution of ECU software updates (ECUs) and to clarify how the EVO checks the availability of software updates for the ECUs installed in the vehicle.
MAS004704 MCL 25-242025-05-16. Other. UNKNOWN OR OTHER. After 7 years from the introduction of the Maserati Diagnosi EVO 2 (2nd generation), we inform you that Panasonic can 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.
MAS004438_A MTB 25-162025-05-16. Other. UNKNOWN OR OTHER; ENGINE. his Technical bulletin serves as a diagnostic guide for managing oil leaks and instructing related repairs. This Bulletin requires a BOL to be opened as “Support Request”.
MAS004711 MCL 25-252025-05-16. Other. UNKNOWN OR OTHER. The Rapid Updates (Campaigns) in the list below will be closed starting from May 12, 2025. 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.
MAS004683 DS 25-142025-04-24. Other. UNKNOWN OR OTHER. GranCabrio Side Window Noise Diagnostic Guide.This Diagnostic Sheet serves as a guide and provides additional diagnostic info for possible side window noise anomalies. In the event of a concern relating to aerodynamic noise from the side windows of the New GranCabrio while traveling, the following diagnostics checklist must be applied and the required troubleshooting must be reported using Blue On Line (Factory Information) before adjusting the windows.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.