Service bulletins for the 2020 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.
115 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 2036678.5 | 2023-02-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Speaker Replacement - Diagnostic Checks Technical Background: -There have been instances where door speakers have been changed under warranty for the complaint of sound distortion, yet when tested by ourselves and the supplier, no fault could be found with the returned unit. |
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| 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 |
| 2063651.2 | 2022-12-08. Service bulletin. WHEELS. Tyre tread/sidewall crack(s) Customer Statement: -Cracks evident in the sidewall and/or tread pattern Technical Background: -The issue is mainly evident on vehicles with very low usage This is a result of the tyre compound hardening due to the following: -Tyre age -Tyre pressure not adjusted to specification -Low mileage/vehicle usage -Vehicle storage conditions |
| 2061195.2 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM. Telephone Functionality Complaint- Minimum Standards Required For Analysis of Concerns Customer Statement: -The feedback method within this TPI is required should a complaint of telephone functionality and/or quality be reported. |
| 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. |
| 2056407.4 | 2022-12-08. Service bulletin. STEERING; SUSPENSION. Running Gear - Noise Identification Customer Statement: -Noise complaint from the suspension and/or steering |
| 2063017.2 | 2022-12-08. Service bulletin. WHEELS. Road Wheel Inspection Procedure: Customer Statement: In the event of a complaint is received regarding road wheel/s condition for example: -scratches -corrosion -damage -blemishes -chipping |
| 2055036.6 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM. My Bentley - Connected Services Technical Background: -Most queries and complaints regarding My Bentley connected services can be resolved by contacting My Bentley Support rather than raising a DISS technical query. My Bentley support have access to additional admin tools and systems to help resolve any queries; and also have ability to raise DISS technical queries if required. |
| 2051776.4 | 2022-12-08. Service bulletin. EQUIPMENT. New Continental GT - Key blade can be difficult to remove from key fob Technical Background: -Deviations in the key blade and key fob assembly could make it difficult to remove the key blade. |
| 2063410.4 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM. Infotainment Main Unit (5F/J794) fault finding/diagnosis procedure Customer Statement: Issue suspected with the Infotainment Main unit (5F/J794) -MMI screen image flickers or goes blank -No Response to selection -Audio cuts-out |
| 2050542.6 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Body/Equipment: Front exterior lighting steamed up/leaks Customer Statement: -The lenses of the headlights/front fog lamps are steamed up/damp from the inside with minor drips |
| 2051562.10 | 2022-12-08. Service bulletin. ELECTRICAL SYSTEM. 12 Volt - Battery Test Instruction Technical Background: -For all 12 volt battery issues relating to warranty or a parts warranty claim, a DISS query MUST be raised prior to battery replacement, refer to the instructions within the measure of this section of this TPI. |
| 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. |
| 2051562.9 | 2022-11-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 12 Volt- Battery Condition Checks. Technical background For all 12 volt battery issues relating to warranty or a parts warranty claim, a DISS query MUST be raised prior to battery replacement, refer to the instructions within the Measure section of this TPI. |
| 2067489/1 | 2022-10-07. Service bulletin. STRUCTURE; VISIBILITY. Window side glass - Identification - Standard (STD) or Privacy (PRV) Customer Statement: - Incorrect side glass fitted - Standard (STD) not Privacy (PRV) or visa versa and/or Defects are evident within the glass Technical Background: -The instructions within the Measure section MUST only be followed if the glass is to be replaced |
| 2053492/8 | 2022-10-07. Service bulletin. SUSPENSION. Air spring fault finding Customer Statement: -The front and/or rear suspension appears to have dropped Technical Background: -Bentley vehicles which are applicable to this TPI are fitted with air springs as part of the suspension system. Should air leak from the air spring dampers, this will cause the suspension to drop. However, the dropping of the suspension does not necessarily mean that the air spring is faulty. -The Measure section of this TPI describes how and where to check for air leaks on the front and rear air springs, the air supply unit, pipes, valve unit and air reservoirs. This includes potential air leak points on the air spring dampers and also the locations of an air leak that can be repaired without the need to replace an air spring damper. |
| 2053177/17 | 2022-08-31. Service bulletin. ELECTRICAL SYSTEM. All Vehicle Variants - Spurious DTC List. Customer statement / workshop findings: -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 Technical background: -The operative should refer to the Bentley Hub referencing TPI 2053177/- The document (loaded onto the Hub) contains all of the current known Spurious DTCs for all vehicle variants -Should a particular TPI be listed as Archived, the TPI can no longer be viewed within Elsa pro, in this case please refer to the instructions within TPI 2053177/- regarding the DTC description and actions which should be conducted (if any). |
| 2067538/1 | 2022-08-06. Service bulletin. ELECTRICAL SYSTEM. Bentayga, Mulsanne and New Flying Spur - Rear Entertainment Tablet - Battery Replacement. Customer statement / workshop findings: Message on Bentley Rear Entertainment Tablet - The battery is defective Please contact your Bentley dealer. Technical background: The Bentley Rear Entertainment Tablet incorporates battery voltage protection, under certain conditions this system can prevent the internal battery from accepting a charge current, this would normally require the Tablet to be replaced. This TPI provides the necessary information to replace the Tablet internal battery pack. |
| 2067488/1 | 2022-08-05. Service bulletin. STRUCTURE. Veneer/trim mismatch - DISS query requirements. Customer statement / workshop findings: In the event that a trim mismatch is detected for example: - Piano black veneer is supplied although the customer ordered walnut veneer Or - The interior trim colour is incorrect for example: Cricket ball interior trim is supplied although the customer ordered Hotspur The operative should refer to the Technical background section |
| 2055036/5 | 2022-06-02. Service bulletin. ELECTRICAL SYSTEM. My Bentley - Connected services. Customer statement / workshop findings: Complaints relating to My Bentley connected services. Technical background: Most queries and complaints regarding My Bentley connected services can be resolved by contacting My Bentley Support rather than raising a DISS technical query. My Bentley support have access to additional admin tools and systems to help resolve any queries; and also have the ability to raise DISS technical queries if required. |
| 2052785/7 | 2022-04-08. Service bulletin. SERVICE BRAKES, HYDRAULIC. Brake noise identification. Customer statement: Noise complaint from the braking system. Workshop findings: The noise can be reproduced and clearly assigned to the braking system. Service: Note: For correct diagnosis and repair the attached Flowchart must be followed. 1. Check the overall condition of the brakes to determine if the brake noise can be attributed to one of the causes listed in the Technical Background section of this TPI. If the noise is not a result of one these causes, proceed with point 2. 2. Record the noise and frequency For the frequency analysis and the noise recording we recommend using the Chassis Ear Tool WT 10437. To record the noise and measure the frequency using WT 10437 Chassis Ear Tool follow these instructions; Refer to File recording in the WT 10437 user instructions. |
| 2065604/1 | 2022-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Suspicion that control units or services have been influenced by third parties. Customer statement / workshop findings: In the event a customer complaint is received relating to a suspicion that control units or services have been influenced by third parties the instructions within this TPI should be followed. Technical background: A suspicion that control units or services have been influenced by third parties means that unauthorised people or groups may have gained access to a vehicle's control unit(s) or online services and may have manipulated them in such a way that may compromise customer data confidentiality or the operation of the vehicle and/or online services. When investigating potential third party influences of control units or online services, it is important to take all normal diagnostic measures to rule out a normal functional error or misuse of the system by the user |
| 2063410/3 | 2022-01-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Infotainment Main unit (5F / J794) fault finding/diagnosis procedure. Customer statement / workshop findings Issue suspected with the Infotainment Main unit (5F / J794) - For example: - MMI screen image flickers or goes blank - No response to selection - Audio cuts-out Technical background The operative should continue as follows: - Complete the questionnaire within the Measure section of this TPI (Part 1) once completed the questionnaire should be attached to an existing or already open DISS query - Once the questionnaire is complete, the operative should refer to (Part 2) within the Measure section regarding fault finding/diagnosis of the Infotainment Main unit (5F / J794) |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.