WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Bentley Bentayga

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.

757 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
2077982/12025-07-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Exhaust Flap Control Unit - Various DTCs | Bentayga Series | 17-25MY. Technical Background The root cause of Exhaust Flap Control Unit malfunction is electrical ‘shorting’ of the commutator segments, this is caused by an accumulation of “Sludge” within the exhaust flap control unit DTC’s are stored when the respective Control Unit does not move through its full range of motion.
2061369/102025-07-02. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Engine Overheating - Warning in the DIP | V8 Kovomo. One or a combination of the following symptoms are evident • Engine overheat warning in the DIP (Engine overheating) • Unusual cooling fan operation at high temperatures • P19F700: Low engine coolant temperature indicator lamp coolant too warm • Signs of coolant in the vacuum hoses for switch valve N649
2071239/32025-07-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Engine Overheating - Coolant Pump Leaking and Low Coolant Warning | W12. One or a combination of the following is evident: • Coolant leaking from the mechanical coolant pump • Coolant witness marks on the mechanical coolant pump although coolant is not leaking/dripping from the pump • Low coolant level warning displayed within the DIP Or • Engine overheating issues and/or DTC P218100: Cooling System Performance with symptom code 8113 or air in the coolant DTC’s (various) is evident, in this scenario the operative should also refer to TPI 2051893/-
2077385/12025-06-05. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; ENGINE. W12 Fuel Supply Module | Low fuel pressure warning | Bentayga | 17-23MY. Condition: Engine difficult to start Or Engine runs rough These issues can trigger DTC P00310B, P008A00 relating to Low Fuel Pressure regulation, Fuel pressure outside specification The following symbol can also be displayed on the Driver Instrument Panel (DIP) in conjunction with an error message “start/stop unavailable”
2055321/52025-06-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM. Low fuel pressure regulation DTC 310B00 | Bentayga W12 | 17MY - 23MY. Condition: Prior to replacing the fuel delivery module or fuel pump control units please refer to the information within TPI 2077385 Engine stalling when the engine is started from cold (at idle) Or After a delayed cold start These issues can trigger DTC 310B00: Low Fuel Pressure regulation, Fuel pressure outside specification The following symbol can also be displayed on the Driver Instrument Panel (DIP) in conjunction with an error message “start/stop unavailable”
2051187/112025-05-07. 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)
2065215/22025-04-03. Service bulletin. ENGINE. V8 Kovomo engine replacement (Fitment of ancillary components). Condition: Torque values for ancillary components (used during engine replacement) are not currently available within the Repair manual The affected components and torque values are as listed within the Technical background section of this TPI
2065918/52025-04-03. Service bulletin. ENGINE. V8 Kovomo - Bentayga - Water pump drive gear cover (Deletion).
2064337/32025-04-02. 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
2028808/82025-04-02. 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
2064679/52025-04-02. Service bulletin. ENGINE. Oil leaking from tell tale hole - CDA actuator fixings or Fuel rail fixings or Vaccum assembly fixings - V8 Kovomo.
2068273/42025-03-28. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; ENGINE. Multiple random misfires evident during PDI. Condition: Multiple random cylinder misfire DTC’s detected during PDI - DTC P030000: Random/Multiple Cylinder Misfire Detected (misfires on multiple cylinders) within the following control units: • V8 - ECM 1 - V8 (Address 01) ECM control unit • W12 - ECM 1 - (Address 01) and/or ECM 2 (Address 11)
2075922/22025-03-28. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE; ELECTRICAL SYSTEM. High pitched whistle from the engine - Warning light within the DIP - Engine not running smoothly - Numerous DTC's.
2061369/92025-03-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Engine overheating - Warning in the DIP (V8 Kovomo). Condition: One or a combination of the following symptoms are evident: • Engine overheat warning in the DIP (Engine overheating) • Unusual cooling fan operation at high temperatures • P19F700: Low engine coolant temperature indicator lamp coolant too warm • Signs of coolant in the vacuum hoses for switch valve N649
2059149/62025-03-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Engine OIl - Consumption - V8 Kovomo. Condition: Engine oil warning lamp illuminated within the Drivers Instrument Panel (DIP) Engine oil requires “topping up” between services Excessive engine oil consumption
2057978/82025-03-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Engine Lubricating Oil - Replenishment. Condition: Engine lubricating oil lamp illuminated on driver instrument panel. Engine lubricating oil requires “topping up” between services.
2075331/22025-03-27. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; ENGINE. Engine light in the DIP - Various oxygen sensor / Fuel ratio DTC's logged within the Engine Control Module(s),
2075318/22025-03-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Engine light in the DIP - Various Camshaft adjuster DTC's logged within the Engine Control Module(s).
2075140/22025-03-27. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Engine cooling system over cooling - One or a combination of DTC's may be evident P218100 - P1BB400.
2070041/42025-03-27. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Engine coolant overheat warning in the DIP - One or a combination of DTC's may be evident P017B00 - P017C00 - P017E00. Customer statement: Engine coolant overheat warning within the DIP
2028794/82025-03-27. 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
2055664/22025-03-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE. DTC P14AB00 and/or other related exhaust flap DTC's - Warning lamp evident within the DIP. Technical Background: • The warning lamp and DTC’s can be triggered by non-operation of the exhaust flap control unit/s
2062080/102025-03-26. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE; ELECTRICAL SYSTEM. Bentayga V8 Kovomo and V6 (Hybrid) - Fuel Pressure Regulation - Numerous DTC's.
2065664/42025-03-26. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Bentayga V8 Kovomo - Engine MIL light on - DTC "O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2. Condition: DTC P004100: “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
2062092/42025-03-26. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; ENGINE. Bentayga V8 Kovomo - DTC P304300 with symptom code (10061) - Fuel Pump Mechanical Malfunction - MIL lamp. Customer statement: Check Engine Lamp illuminated within the Driver Instrument Panel (DIP) Workshop findings: DTC P304300 – with symptom code (10061) - Fuel Pump Mechanical Malfunction evident

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