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Service bulletin 20389522

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 id10081420
Published by NHTSA2016-10-04
Manufacturer's number20389522
Manufacturer's date2016-08-12
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; ENGINE

NHTSA's summary

MULSANNE ENGINE AND TRANSMISSION CONTROL MODULE SOFTWARE UPDATE (SC15/01)

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine, Transmission and driveline, Software

Vehicles listed
BENTLEY MULSANNE2011, 2012, 2013, 2014, 2015

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
SB-2033282-2A2016-03-16. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-2033282-1A2016-03-16. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
CN-E-7832013-08-26. Service bulletin. BENTLEY: SOFTWARE REPLACEMENT FOR ENGINE CONTROL MODULE (ECM), WAS CREATED TO ALLOW ADDITIONAL UPDATES TO ON BOARD DIAGNOSIS (OBD) SETTINGS. MODELS 2011-2013 MULSANNE. *PE
DC-12-20112011-12-14. Service bulletin. BENTLEY: ABS CONTROL MODULE INTERRUPTS THE COMMUNICATIONS BETWEEN ABS AND THE ENGINE CONTROL MODULE (ECM). *PE