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Service bulletins for the 2020 Maserati Quattroporte

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
MAS0039292024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Circular Letter.
MAS0039282024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Circular Letter.
MAS0038952024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical Information.
MAS0038912024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical Information.
MAS0038442024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Diagnostic Sheet.
MAS0038212024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical Information.
MAS0037922024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical Information.
MAS0029292024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Daignostic Sheet.
MAS0039902024-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Technical Information .
MAS0028422022-01-24. Service bulletin. EQUIPMENT; VISIBILITY:SUN/MOON ROOF ASSEMBLY. Service Campaign # 430 - For Subroof Water Infilteration.
MAS0024642021-02-22. Service bulletin. EQUIPMENT; TIRES; WHEELS. Vehicle configuration update after the installtion of wheel rems/tires of different sizes
TT-662020-12-14. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. Follow these steps to successfully complete the vin writing and then the software programming activities.
MAS-00-08-832020-12-14. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Campaign 268 Dome Reinforcement Plate Installation.
MAS0023242020-10-13. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Technical Bulletin - Engine coolant leaks from the cabin heater water delivery hose or the cabin heater water return hose.
MAS001382C2020-08-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Circular Letter - Tutor Process for Harmon Components
MAS0021992020-07-13. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL; EQUIPMENT ADAPTIVE/MOBILITY. Circular Letter - Updated ETM Software Volta 6 -Troubleshooting guides to diagnose Base Audio System Reboot, Apple Carplay Disconnecting/Jamming and other anomalies.
MAS0021582020-04-27. Service bulletin. EQUIPMENT; SERVICE BRAKES. Technical Bulletin: Communication to Dealer Technicians regarding whistle noise, from braking system, while driving (Small System) at a constant speed without the application of the brake pedal.
MAS002120i2020-04-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Circular Letter - New ETM Software Volta 6 -Troubleshooting guides to diagnose Base Audio System Rebbot, Apple Carplay Disconnecting/Jamming and other anomalies.
MAS0021202020-04-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Circular Letter - Upload of new software related to the Entertainment Module (ETM) on vehicles with ETM Software (Volta 6.0)

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