# Service bulletin 2055540/2

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.

- Type: Service bulletin
- NHTSA id: 10178181
- Published by NHTSA: 2020\-08\-07
- Manufacturer's number: 2055540/2
- Manufacturer's date: 2020\-07\-03
- NHTSA component: ENGINE; STEERING; POWER TRAIN; EQUIPMENT; SUSPENSION

## NHTSA's summary

Rumble noise and/or floor pan/steering column vibration. Customer statement/workshop findings Floor pan or steering column/steering wheel vibration when manoeuvring/steering at slow speeds with steering wheel input Technical background Prior to carrying out the assessments within the Measure section, the retailer must check and confirm the following: The engine has not been chip tuned The vehicle is in standard condition \(as per factory specification\) ensuring that NO non approved accessories are fitted The suspension, steering and brake components are in a serviceable condition The engine, transmission mounts, powertrain and all wheel bearings are in a serviceable condition The exhaust system and all wheels and tyres are in a serviceable condition \(as per factory specification\) Once confirmed that all the afore mentioned criteria has been met the assessment can then be conducted

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178181-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178181-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Equipment and accessories, Steering, Suspension, Transmission and driveline

## Vehicles listed

- 2017 to 2021 BENTLEY BENTAYGA

## Recalls for the same vehicles and component

- [21V975000](/recalls/nhtsa/21V975000.md), 2021-12-15: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; AIR BAGS:FRONTAL
- [21V276000](/recalls/nhtsa/21V276000.md), 2021-04-21: SUSPENSION:REAR:AXLE:NON\-POWERED AXLE ASSEMBLY

## Other bulletins for the same vehicles and component

- [2061369/14](/bulletins/11037161.md), 2026-09-09, Service bulletin: ELECTRICAL SYSTEM; ENGINE. Engine Overheating \- Warning in the DIP \| V8 Kovomo. Customer statement / workshop findings: 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
- [2082806/1](/bulletins/11037157.md), 2026-09-09, Service bulletin: STEERING. Steering Rack Requires Replacement \| Bentayga \| 17\-18MY
- [2061369/13](/bulletins/11037097.md), 2026-09-05, Service bulletin: ELECTRICAL SYSTEM; ENGINE. Engine Overheating \- Warning in the DIP \| V8 Kovomo. Customer statement / workshop findings: 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
- [2081085/2](/bulletins/11035939.md), 2026-08-06, Service bulletin: ELECTRICAL SYSTEM; ENGINE. V8 Engine \- Ticking Noise, Misfiring and Possible Low Oil Pressure Indications. Customer statement: The customer may report an audible ticking noise from the top of the engine, low oil pressure warnings / MIL on the Driver Information Panel, and/or misfiring during engine operation
- [2051187/13](/bulletins/11035901.md), 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\(s\)
- [2068273/6](/bulletins/11035569.md), 2026-08-03, Service bulletin: ELECTRICAL SYSTEM; ENGINE. Multiple random misfires evident during PDI.
- [2065664/6](/bulletins/11035418.md), 2026-08-01, 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. Customer statement / workshop findings: 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
- [2081236/2](/bulletins/11035417.md), 2026-08-01, Service bulletin: ENGINE; VISIBILITY/WIPER; ELECTRICAL SYSTEM. Loss of Cabin Heat During Engine Operation \| Bentayga \- V8. Customer Statement: Customers may report that the air conditioning system blows only cold air when the engine is running. Warm air is only available after switching off the engine. The concern is commonly reported after engine removal or recent repair work.
- [2071190/4](/bulletins/11035415.md), 2026-08-01, Service bulletin: ENGINE; VISIBILITY/WIPER; ELECTRICAL SYSTEM. HVAC failing to cool \| DTC B16A1F0 in diagnostic address 00C5 \| Bentayga Series \(Hybrid\).
- [2075922/4](/bulletins/11035414.md), 2026-08-01, Service bulletin: ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM. High pitched whistle from the engine \- Warning light within the DIP \- Engine not running smoothly \- Numerous DTC's. Customer statement/Workshop findings: • Emission control warning light evident within the DIP • Engine not running/idling smoothly • High pitched whistle from the right and left hand side of the engine TIP: Refer to video within the Bentley Hub referencing TPI 2075922/\- • A selection of DTC’s are evident \(as per TPI Event memory entries\)

JSON: [/v1/bulletins/10178181](/v1/bulletins/10178181)

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