WenmarOpen by Wenmar Pro

Service bulletin MAS003864

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10249045
Published by NHTSA2024-01-22
Manufacturer's numberMAS003864
Manufacturer's date2023-12-14
NHTSA componentELECTRICAL SYSTEM:WIRING

NHTSA's summary

Rapid Update 682 to check the correct routing of a wiring harness that passes near the alternator.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Wiring and fuses

Vehicles listed
MASERATI GRANTURISMO2016
MASERATI GRANTURISMO2023, 2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
MAS0038632024-01-22. Service bulletin. Rapid Update 681 to inspect front wiring harness and reposition it if ncessary.
MAS0036232023-07-31. Service bulletin. Rapid Update 631 - To check 8 ground points and possibly clean the eylet terminals that have excess glue between the wire insulation and terminal preventing a proper clamping of the terminal to the body stud. This can lead to malfunctions in various electrical systems.