Service bulletins for the 2012 Bentley Mulsanne
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.
174 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Transmission and driveline are shown. Show all
| 2056407.5 | 2023-11-06. Service bulletin. POWER TRAIN; STEERING. Running gear - Noise identification Workshop Findings: -The noise can be reproduced and clearly assigned to the suspension system from either of the axles And/or The noise can be reproduced and clearly assigned to the steering system Prior to starting the instructions within this TPI, the Retailer must check and confirm the vehicle is in standard factory condition and has not had any non-approved aftermarket modifications conducted including the modification of the engine control modules (chip tuning) Check the history of the vehicle to confirm Should any aftermarket modifications be found, the Retailer must make Product Support aware by raising a DISS query to report the details of the modification, you must then await feedback from Product Support before conducting any further work |
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| 2038952/1 | 2020-07-28. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN; ELECTRICAL SYSTEM. Mulsanne engine and transmission control module software update (SC15/01) Technical background: Customer may experience powertrain clunk feeling when driving at low load. Investigations found that improvements in the modelled auxiliary torque drag would remove the clunk sensation, Remedy The improved modelled auxiliary torque drag calibration for Mulsanne must be applied by performing this campaign process. |
| 2024811/2 | 2020-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Gearbox code P1703 not clearing in Guided Fault finding Condition: There is no customer complaint the fault code is logged as a result of connecting the diagnostic tester When the fault memory is read using Guided Fault finding the following codes may be logged: P170300 Limp home, control unit reset (located in diagnostic address 02 Transmission control module) U1111 Function limitation due to missing message (located in diagnostic address 81 Gear Shift Control Module (GSM) Technical Background: Due to a communication error between the tester and the transmission control module the above faults may be logged even though there is no problem with the vehicles gearbox system. If these faults are logged and there is no gearbox problem reported, clear these codes using vehicle Self Diagnosis. |
| 2038952-4 | 2019-07-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM; POWER TRAIN. Mulsanne engine and transmission control module software update (SC15/01) |
| 20389522 | 2017-02-09. Service bulletin. ENGINE; POWER TRAIN. MULSANNE ENGINE AND TRANSMISSION CONTROL MODULE SOFTWARE UPDATE (SC15/01) |
| 20389522 | 2016-10-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; ENGINE. MULSANNE ENGINE AND TRANSMISSION CONTROL MODULE SOFTWARE UPDATE (SC15/01) |
| SB-2035309-2-A | 2016-04-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
| TPI-2033480-1 | 2013-11-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). BENTLEY: TRANSMISSION CONTROL MODULE (TCM) LOOSING COMMUNICATION, HAS A SOFTWARE ANOMALY, WITH GEAR SELECTOR ELECTRONICS AT TIME OF IGNITION SWITCH IS ON, CAUSING A NON SELECTION OF GEAR FROM PARK AND COMMUNICATION WITH THIS MODULE. MODEL 2012-2013 MULSANNE. *PE |
| E763 | 2012-04-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT; POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT. BENTLEY: GEAR SELECTOR - WARNING AND FAULT CODE - GEAR KNOB SWITCH RESISTANCE HIGH. MODEL YEAR 2011 MODEL TYPE 3Y2 AND MODEL BRAND E. *KB |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.