WenmarOpen by Wenmar Pro

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: Engine are shown. Show all

Bulletins, newest first
2038974/12020-07-28. Service bulletin. ENGINE AND ENGINE COOLING. Engine coolant thermostat - Engine start difficult Customer statement / workshop findings: Engine difficult to start Technical background: Engine coolant thermostat failure can result in implausible coolant temperature data being read by the engine control module in some cases this may lead to engine starting difficultys
2038952/12020-07-28. 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.
2028808/32020-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Service info: Engine oil Specific oil type and oil consumption dealer reference Customer statement / workshop findings: Engine oil level requires top up between services Technical background: The introduction of the Bentley Continental GT V8 brings a new engine to the Bentley family. This all new 4.0 litre V8 twin turbo joins the 6.0 litre W12 in the Continental range with the 6.75 litre V8 reserved for the Mulsanne. Each of these three engines had individual design criteria producing unique driving characteristics as a result each have individual lubrication requirements and oil consumption statistics. With the 4.0 litre V8 comes a new oil to Bentley - this new engine lubricant must only be used in the 4.0 litre V8. The use of the correct oil for each engine is critical to its continued performance, reliability and ultimately warranty. Therefor the workshop manual should always be the first point of reference ensuring the correct lubricant is used for each specific model year and engine type
2051187/52020-01-09. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Condition: Poor engine running, reduced power, engine warning lamp illuminated. Technical Background: Technical Product Information (TPI) to assist Retailers when diagnosing poor engine running or misfires. Service: The following TPI should be carried out sequentially to ensure the root cause and analysis of the concern are identified without unnecessary work or repetitive actions taking place.
2053177/62020-01-09. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Condition: Customer will not be aware of any fault codes. Workshop may discover spurious fault codes whilst running a Diagnostic Trouble Code (DTC) log as part of other investigations on the vehicle. Technical Background: The attached document contains all of the current known Spurious DTCs for all vehicle variants. Should a particular TPI be listed as Archived within the attached document the TPI can no longer be viewed within Elsa pro, in this case please refer to the instructions with the attached document regarding the DTC description and actions (if any) which should be conducted Service: During routine diagnostic interrogation of vehicle systems use the attached document to determine the course of action to be taken.
2051187.32019-07-01. Service bulletin. ENGINE. Poor Engine Running Complaints (Misfires) Petrol Engines Only
2038952-42019-07-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM; POWER TRAIN. Mulsanne engine and transmission control module software update (SC15/01)
2051187.12018-07-16. Service bulletin. ENGINE AND ENGINE COOLING. Poor Engine Running Complaints (Misfires) Petrol Engines Only
203895222017-02-09. Service bulletin. ENGINE; POWER TRAIN. MULSANNE ENGINE AND TRANSMISSION CONTROL MODULE SOFTWARE UPDATE (SC15/01)
203895222016-10-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; ENGINE. MULSANNE ENGINE AND TRANSMISSION CONTROL MODULE SOFTWARE UPDATE (SC15/01)
2032308-1A2016-03-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-2030588-1E7652016-03-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-2028808-22016-03-16. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
CN-E-7832013-08-26. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. 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
CNE-7762013-02-01. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM. BENTLEY: IN HIGH AMBIENT CONDITIONS, HOSE FAILURE AND SUBSEQUENT COOLANT LOSS, MAY OCCUR, IF INTERNAL UPPER PRESSURE IS LESS THAN SYSTEMS PEAK OPERATING PRESSURES. MODELS 2011-2013 MULSANNE. *PE
DC-12-20112011-12-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; SERVICE BRAKES, AIR:ANTILOCK; ELECTRICAL SYSTEM:SOFTWARE. BENTLEY: ABS CONTROL MODULE INTERRUPTS THE COMMUNICATIONS BETWEEN ABS AND THE ENGINE CONTROL MODULE (ECM). *PE

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