Maserati bulletin MAS003770
What it saysRapid Update 667 to check the gearbox wiring of the automatic transmission on MHEV vehicles NHTSA’s full summary ↓
Maserati filed this with NHTSA as a service bulletin dated Oct 18, 2023, received Dec 4, 2023, about the power train. It names 2 model years (2023–2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationRapid Update 667 to check the gearbox wiring of the automatic transmission on MHEV vehicles
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| MAS003770 | Service bulletin | Oct 18, 2023 | 10245713 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 13 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group6 other manufacturer communications filed against the Maserati Grecale under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| MAS004705_A MTB 26-13 | Other | Jul 1, 2026 | Grecale Driveshaft Flex Disc Characteristics This Technical bulletin serves as a guide and provides info regarding wear characteristics of t… |
| MAS004825 DS 25-23 | Other | Jul 30, 2025 | This bulletin provides guidance for diagnosing and resolving a knocking noise from the turbocharger area on Grecale MHEV vehicles. If resol… |
| RAPID UPDATE 792 | Service campaign | Jun 24, 2025 | Certain Maserati vehicles are involved in a Rapid Update to update the AGSM (Automatic Gearbox Shifter Module) software. Models affected: G… |
| MAS004649 MTB 25-12 | Other | Apr 1, 2025 | Special tool (P/N 900029716) for inserting oil seals into the gearbox. |
| MAS004235 BOL 24-25 | Other | Jun 6, 2024 | This Diagnostic Sheet serves as a guide and provides additional diagnostic info for possible Axle shaft noise. |
| MAS003789 | Service bulletin | Oct 12, 2023 | Rapid Update 671 related to four point nut tightening torque check for Grecale MHEV - 48V system |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Maserati, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Maserati MAS003770 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the MAS003770 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does MAS003770 cover?
The manufacturer filed it against 2 model years: 2024 Maserati Grecale, 2023 Maserati Grecale. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.