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
| 2051187/13 | 2026-08-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Customer statement / workshop findings: • Poor engine running • Reduced power • Engine warning lamp illuminated • Symptom related DTC’s evident within the applicable engine control unit(s) |
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| 2028808/10 | 2026-07-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Service info: Engine oil – Specific oil type and oil consumption reference. |
| 2028794/10 | 2026-07-29. Service bulletin. ENGINE. Engine coolant mixture - Restrictions on use of desalinated water. |
| 2064337/4 | 2025-11-07. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. Usage of E10 fuel. Condition In the event a customer asks if E10 fuel can be used, the operative must refer to the Technical background section of this TPI. |
| 2028808/9 | 2025-11-06. Service bulletin. ENGINE. Service info: Engine oil - Specific oil type and oil consumption reference. Technical Background: The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. 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 Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering |
| 2051187/12 | 2025-11-06. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Condition: • Poor engine running • Reduced power • Engine warning lamp illuminated • Symptom related DTC’s evident within the applicable engine control unit(s) |
| 2028794/9 | 2025-11-06. Service bulletin. ENGINE. Engine coolant mixture - Restrictions on use of desalinated water. Technical Background: An important factor of influencing the cooling system efficiency is the water used in the mixture Due to the different ingredients and characteristics existing in each country or even region, Bentley has decided to define the quality of water for cooling systems |
| 2075786/2 | 2025-10-30. Service bulletin. ENGINE; ELECTRICAL SYSTEM; STRUCTURE:BODY; SEAT BELTS; AIR BAGS. Airbag, fire, accident (safety-related enquiry - reporting forms). There is a reporting obligation in the following cases: • Airbag/belt released/not released • General accident • Fire and scorching damage for all Bentley Vehicle models - every model year. |
| 2051187/11 | 2025-05-07. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Condition: • Poor engine running • Reduced power • Engine warning lamp illuminated • Symptom related DTC’s evident within the applicable engine control unit(s) |
| 2064337/3 | 2025-04-02. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. Usage of E10 fuel. Condition: In the event a customer asks if E10 fuel can be used, the operative must refer to the Technical background section of this TPI Technical Background: Details on the introduction of E10 fuel which contains 10% ethanol and its usage on Bentley products • All vehicles produced post 1990 Model year can be run using E10 fuel However • All vehicles produced before 1990 Model year MUST NOT use E10 fuel |
| 2028808/8 | 2025-04-02. Service bulletin. ENGINE. Service info: Engine oil - Specific oil type and oil consumption reference. Condition: Engine oil level requires top up between services Technical Background: The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. 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 Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering |
| 2028794/8 | 2025-03-27. Service bulletin. ENGINE. Engine coolant mixture - Restrictions on use of desalinated water. Technical Background: An important factor of influencing the cooling system efficiency is the water used in the mixture Due to the different ingredients and characteristics existing in each country or even region, Bentley has decided to define the quality of water for cooling systems Demineralised water according to standard VDE 0510 meets all requirements and can be purchased worldwide Therefore undiluted coolant should be mixed in the correct ratio using demineralised water as detailed in Elsa Pro coolant specification, this will detail the ratio and type of coolant to use The use of desalinated water in the engine cooling system is specifically prohibited |
| 2028794.7 | 2023-11-08. Service bulletin. ENGINE AND ENGINE COOLING. Engine Coolant Mixture - Restrictions on use of desalinated water Customer Statement: -Engine coolant requires topping up or replacing |
| 2028808.7 | 2023-11-06. Service bulletin. ENGINE AND ENGINE COOLING. Service info: Engine oil Specific oil type and oil consumption reference Customer Statement: -Engine oil level requires top up between services |
| 2051187/9 | 2023-08-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Customer statement / workshop findings: - Poor engine running - Reduced power - Engine warning lamp illuminated - Symptom related DTCs evident within the applicable engine control unit(s) Technical background: Technical Product Information (TPI) to assist retailers when diagnosing poor engine running or misfires. |
| 2069806.1 | 2023-05-05. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. HVAC Refrigerent Leakage - Diagnosis Guidelines Customer Statement: -HVAC not cooling or HVAC cooling less than expected |
| 2051187.8 | 2022-12-08. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Poor Engine Running Complaints (Misfires) Petrol Engines Only Customer Statement: -Poor engine running, reduced power, engine warning lamp illuminated. |
| 2028808.6 | 2022-12-08. Service bulletin. ENGINE AND ENGINE COOLING. All 12MY Engine Oil- Service Info: Engine Oil - Specific oil type and oil consumption reference, Technical Background: -The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. -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 -Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering. |
| 2064337.2 | 2022-12-08. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Usage of E10 Fuel Customer Statement: -In the event a customer asks if E10 fuel can be used, the operative must refer to the Technical background section of this TPI |
| 2053177.18 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. All Vehicle Variants - Spurious DTC List Customer Statement: -Customers 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. |
| 2051187.7 | 2022-11-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Poor Engine Running Complaints (Misfires) Petrol Engines Only Customer Statement: -Poor engine running, reduced power, engine warning lamp illuminated. |
| 2051187/6 | 2021-10-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Customer statement / workshop findings: Poor engine running, reduced power, engine warning lamp illuminated. Technical background: Technical Product Information (TPI) to assist Retailers when diagnosing poor engine running or misfire. Measure: 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. |
| 2028808/5 | 2021-10-04. Service bulletin. ENGINE AND ENGINE COOLING. Service info: Engine oil Specific oil type and oil consumption reference. Customer statement / workshop findings: Engine oil level requires top up between services Technical background: The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. 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 Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering |
| 2028808/4 | 2020-08-05. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil. Specific oil type and oil consumption reference. Customer statement / workshop findings: Engine oil level requires to:p up between services. Technical background The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. 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 Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering |
| 2038974/2 | 2020-07-28. 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 difficulties Measure: It is intended that in the event of engine starting difficulties being attributed to a coolant thermostat failure on a Mulsanne prior to VIN SCBBA6ZH9FC001420 then the new thermostat (part number 069121113) can be fitted. This new thermostat will not fit the original thermostat housing (part number 07V121117) therefore the new thermostat housing (part number 07V121117A) must also be fitted |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.