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
| 2051562/8 | 2021-11-04. Service bulletin. ELECTRICAL SYSTEM. 12 Volt - Battery condition checks. Customer statement / workshop findings: 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 section of this TPI |
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| 2055036/4 | 2021-10-07. 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. |
| 2053492/7 | 2021-10-07. Service bulletin. SUSPENSION. Air spring fault finding. Customer statement / workshop findings: The front and/or rear suspension appears to have dropped. Technical background: The list of Bentley vehicles below are fitted with air springs as part of the suspension system. Should air leak from the air springs, 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 pump compressor, pipes, valve unit and air reservoirs. This includes potential air leak points on the air springs and also the locations of an air leak that can be repaired without the need to replace an air spring. |
| 2063410/2 | 2021-10-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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: Refer to the Measure section regarding any Infotainment Main unit (5F / J794) fault finding/diagnosis |
| 2057841/3 | 2021-10-06. Service bulletin. VISIBILITY; STRUCTURE. Windscreen replacement criteria whilst under manufacturers warranty Customer statement / workshop findings: Windscreen cracked/damaged Technical background: Please refer to the instructions within the Measure section of this TPI in the event that a windscreen is cracked/damaged NOTE: The instructions MUST be followed to help the retailer clarify if the windscreen should be replaced under manufacturers warranty (Stress crack) or Customer pay/insurance (external influence damage) |
| 2056582/4 | 2021-10-06. Service bulletin. STRUCTURE. Interior trim - Creak and rattle - Noise identification Customer statement: Noise complaint from the interior Workshop findings: The noise can be reproduced and clearly assigned to the interior Prior to starting the instructions within this TPI, the Retailer must check and confirm the vehicle is in standard factory condition and has not had any non-approved aftermarket modifications conducted Should any aftermarket modifications be found, the Retailer must make Product Support aware by raising a DISS query to report the details of the modification, you must then await feedback from Product Support before conducting any further work |
| 2052785/6 | 2021-10-05. Service bulletin. SERVICE BRAKES, HYDRAULIC. Brake noise identification. Customer statement / workshop findings: Noise complaint from the braking system. Workshop findings: The noise can be reproduced and clearly assigned to the braking system. Technical background Brake noises can be attributed to many causes. Eight of the most common causes are: - Brake discs or pads are close to their wear limit. - New brake pads and/or discs have not been properly bedded in after installation. - Aftermarket pads or discs are installed. - There is debris such as small stones, grit, road salt or sand between the brake disc and pad. - Discs are covered in rust. Rust can form when the vehicle has been stationary for long periods of time (Figure 1). |
| 2053177/16 | 2021-10-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. All Vehicle Variants - Spurious DTC List. Customer statement / workshop findings 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 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 within the attached document the TPI can no longer be viewed within Elsa pro, in this case please refer to the instructions with the document (loaded onto the Hub) regarding the DTC description and actions (if any) which should be conducted |
| 2051562/7 | 2021-10-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. 12 Volt - Battery condition checks. Customer statement / workshop findings: 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 section of this TPI |
| 2050542/5 | 2021-10-05. Service bulletin. EXTERIOR LIGHTING:FOG LIGHTS; EXTERIOR LIGHTING; EQUIPMENT. Service info: body/equipment: front exterior lighting steamed up/leaks. Customer statement / workshop findings Customer statement: 1. The lenses of the headlights (illustration 1a) /front fog lamps (illustration 1b) are steamed up/damp from the inside with minor drips. or 2. Water is in the headlight (illustration 2a) / front fog lamp (illustration 2b), big drips. Technical background 1. Damp air settles on the inner lens of the headlights/fog lamps, with recognisable misting in certain weather conditions (comparable with the steaming up of spectacle lenses when entering a warm room in winter or of the bathroom mirror after a shower). 2. Leak on the headlights/front fog lamps. For example through open covers, a damaged seal of the cap or similar. |
| 2036678/4 | 2021-10-05. Service bulletin. ELECTRICAL SYSTEM. Speaker Replacement - Diagnostic checks. Customer statement / workshop findings: Audio output from speakers is distorted 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. Production change: All speakers are subjected to a dynamic test and the individual results recorded for future reference |
| 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. |
| 2033864/6 | 2021-10-04. Service bulletin. WHEELS. Customer statement / workshop findings: Unable to remove Accessory valve caps, Figure 1 shows an example of the caps. Technical background: We have observed instances where the caps have been difficult to remove once fitted, the issue is caused by corrosion. The valve stem itself is made from aluminium and the accessory valve caps are chromium plated brass, it is possible under certain environmental conditions, particularly winter road salt, for corrosion to take place between these dissimilar metals. Measure: The solution is to apply a thin smear of silicon-based grease, such as Dow Corning high vacuum grease, to the external threads of the valve stem prior to fitting the accessory valve cap. Grease should be applied any time the cap is removed and grease is not evident |
| 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 |
| 2056407/3 | 2021-10-04. Service bulletin. STEERING; SUSPENSION. Running gear - Noise identification. Customer statement: Noise complaint from the suspension and/or steering Workshop findings: The noise can be reproduced and clearly assigned to the suspension system from either of the axles And/or The noise can be reproduced and clearly assigned to the steering system |
| 2063651/1 | 2021-07-02. Service bulletin. WHEELS. Tyre tread/sidewall crack(s). Customer statement / workshop findings: Cracks evident in the sidewall and/or tread pattern (See the examples in Figures 1 and 2 showing cracks within the tread pattern). 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 |
| 2053177/15 | 2021-06-04. Service bulletin. ELECTRICAL SYSTEM. All Vehicle Variants - Spurious DTC List. Customer statement / workshop findings: 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. |
| 2063410/1 | 2021-06-04. Service bulletin. ELECTRICAL SYSTEM. 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: Refer to the Measure section regarding any Infotainment Main unit (5F / J794) fault finding/diagnosis |
| 2053177/14 | 2021-05-05. Service bulletin. ELECTRICAL SYSTEM. All Vehicle Variants - Spurious DTC List. Customer statement / workshop findings: 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 |
| 2063017/1 | 2021-05-05. Service bulletin. WHEELS. Road wheel inspection procedure: In the event a complaint is received regarding road wheel/s condition for example: - Scratches - Corrosion - Damage - Blemishes - Chipping Please refer to the onward instructions. Technical background: Do not consider submitting a warranty claim for a road wheel manufacturing defect without first referencing and understanding the contents of this document. Any defect or concern found either outside the guidelines stated in this document or not clearly stated as acceptable to support a warranty claim, will be the responsibility of the retailer regarding component replacement. Any road wheels deemed as having no issues found relating to a manufacturing defect (including curbing) will have the applicable claim rejected |
| 2062622/1 | 2021-04-07. Service bulletin. EQUIPMENT; STRUCTURE. Water leak/wind noise diagnosis. Customer statement / workshop findings: Water leak/wind noise evident Technical background: The instructions within the Measure section should be followed to assist in the diagnosis of water leaks or wind noise |
| 2061195/1 | 2020-12-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Telephone Functionality Complaint - Minimum Standards Required For Analysis Of Concerns. Customer statement / workshop findings: The feedback method within this TPI is required should a complaint of telephone functionality and/or quality be reported. Technical background: The minimum standards check list document within the Measure section is required to capture an accurate description of customer telephone issues. |
| 2051562/6 | 2020-12-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. All Models - 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. |
| 2053177/13 | 2020-11-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. All Vehicle Variants - Spurious DTC List. Customer statement / workshop findings 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 |
| 2058173/2 | 2020-11-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Electrical switch replacement guidelines. Customer statement/workshop findings: Electrical switch suspected as defective This TPI is not applicable to suspected faulty control units or any component related to the passive restraint system in particular the airbag system Technical background: Prior to replacing an electrical switch refer to the Measure section of this TPI |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.