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Service bulletins for the 2025 Maserati Granturismo

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.

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

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By component

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Bulletins, newest first
MAS004931 MTB 25-382025-10-31. Other. SUSPENSION; UNKNOWN OR OTHER. This bulletin provides guidance to the authorized service network regarding a specific repair procedure applicable to the front axle transfer case. 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.
MAS004919 DS 25-342025-10-31. Other. UNKNOWN OR OTHER. This bulletin provides an updated diagnostic checklist for addressing concerns related to the TBM2 (Telematic Box Module) system on Maserati Grecale, GranTurismo, and GranCabrio vehicles. It includes detailed procedures for identifying and resolving issues based on specific customer concerns.
MAS004918 MTB 25-392025-10-31. 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.
MAS004915 MTB 25-402025-10-31. Other. UNKNOWN OR OTHER. The purpose of this bulletin is to explain the behavior and function of the Load Shed system introduced in BCM Software 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.
MAS004914 MCL 25-512025-10-31. Other. UNKNOWN OR OTHER. The Rapid Update campaigns listed in the attachment will be closed according to the following schedule: Field Action 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
MAS004912 DS 25-332025-10-31. Other. FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER. This bulletin provides updated diagnostic and repair instructions for identifying and addressing corrosion-related concerns in the low-pressure fuel pump on all Maserati models equipped with internal combustion engines (ICE).
MAS004902 DS 25-322025-10-31. Other. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This bulletin provides updated diagnostic procedures for identifying and resolving issues related to the parking sensor system on select Maserati models. It outlines steps to verify sensor condition, identify false alerts, and determine when replacement or further support is necessary.
MAS004850 MCL 25-482025-10-15. Other. UNKNOWN OR OTHER. The new GranTurismo & GranCabrio Folgore are based on 800V technology and have been developed with innovative technical solutions derived from Formula E. They offer superb performance, combined with the comfort and elegance typical of the Trident, made possible by the three powerful permanent magnet motors. With a potential of over 1200 HP, the cars will have a maximum power of 760 HP available at all 4 wheels and will be equipped with a 92.5 kWh high voltage battery. This letter sets out some important guidelines for the technical management of the new Maserati GranTurismo & GranCabrio Folgore. For further details and general information regarding the entire Folgore range, please refer to the dedicated bulletin MAS003876 and its subsequent revisions. 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
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)
MAS004885 CSN 25-082025-09-30. Other. UNKNOWN OR OTHER. Certain Maserati GranTurismo vehicles are involved in a Customer Service Notification (CSN). The purpose of this bulletin is to instruct dealers to inspect the 12V battery fuse box (BDU) retaining nut and verify that it is tightened to the correct torque. This preventive measure ensures electrical system reliability and helps avoid potential customer concerns. Vehicles Involved: • GranTurismo Folgore (BEV) – MY25
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).
MAS004821 CSN 25-072025-07-30. Service bulletin. UNKNOWN OR OTHER. Customer Service Notification Maserati Folgore - Proactive Action On March 17, 2022, Maserati proudly introduced the Folgore range—marking a historic milestone as the first Italian luxury car brand to launch a complete line of all-electric vehicles. This lineup represents our unwavering commitment to innovation, performance, and excellence. Since its launch, continuous product improvements have been implemented. To ensure our customers benefit from the latest updates, we are now initiating a proactive campaign to bring all Folgore models up to current technical standards. We remind you that all Customer Service Notifications must be performed within the first workshop visit, regardless of whether they appear as mandatory or not in MODIS, as required by Maserati policies. Also, for vehicles in Stock Dealer / PDI, it is necessary to carry out all action operations before delivery to the end customer, as required by the White Book and explicitly reported in the Predelivery checklist.
MAS004782 MCL 25-382025-07-30. Other. UNKNOWN OR OTHER. We are pleased to introduce the all-new BEV GranTurismo and GranCabrio Folgore, developed by Maserati with innovative technical solutions derived from Formula E. The new GranTurismo and GranCabrio Folgore feature 800V technology, offering superb performance combined with the comfort and elegance typical of the Trident. This is made possible by three powerful permanent magnet motors, providing over 1200 HP, with a maximum of 760 HP available on all four wheels. Both vehicles are equipped with a 92.5 kWh high-voltage battery. This bulletin outlines important guidelines for the technical management of the new Maserati GranTurismo and GranCabrio Folgore. For further details and general information regarding the entire Folgore range, please refer to bulletin MAS003876 and its subsequent revisions.
MAS004781 MCL 25-372025-07-30. Other. UNKNOWN OR OTHER. We are pleased to inform you that we have published the updated version of the "Introduction to the New Maserati GranTurismo" on ModisCS+. 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.
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.

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