Service bulletins for the 2014 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.
156 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 2058173/1 | 2020-02-08. Service bulletin. 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 |
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| 2038035/1 | 2020-01-17. Service bulletin. ELECTRICAL SYSTEM. Continental Series, Flying Spur and Mulsanne - Main harness identification Customer statement / workshop findings: Should an issue be diagnosed or reported regarding any part of the vehicles main harness or engine harness resulting in a requirement to raise a DISS ticket, please follow all instructions within this TPI to ensure that your Bentley Motors Technical Service Centre (TSC) receives all required and relevant information. Technical background: In order for the Bentley Motors Technical Service Centre (TSC) to resolve any issues relating to the vehicles main harness or engine harness please follow the instructions within this TPI. Refer to Section 1 for the main vehicle harness identification label location Refer to Section 2 for the engine harness identification label location |
| 2024811/2 | 2020-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Gearbox code P1703 not clearing in Guided Fault finding Condition: There is no customer complaint the fault code is logged as a result of connecting the diagnostic tester When the fault memory is read using Guided Fault finding the following codes may be logged: P170300 Limp home, control unit reset (located in diagnostic address 02 Transmission control module) U1111 Function limitation due to missing message (located in diagnostic address 81 Gear Shift Control Module (GSM) Technical Background: Due to a communication error between the tester and the transmission control module the above faults may be logged even though there is no problem with the vehicles gearbox system. If these faults are logged and there is no gearbox problem reported, clear these codes using vehicle Self Diagnosis. |
| 2028808/3 | 2020-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Service info: Engine oil Specific oil type and oil consumption dealer reference Customer statement / workshop findings: Engine oil level requires top up between services Technical background: The introduction of the Bentley Continental GT V8 brings a new engine to the Bentley family. This all new 4.0 litre V8 twin turbo joins the 6.0 litre W12 in the Continental range with the 6.75 litre V8 reserved for the Mulsanne. Each of these three engines had individual design criteria producing unique driving characteristics as a result each have individual lubrication requirements and oil consumption statistics. With the 4.0 litre V8 comes a new oil to Bentley - this new engine lubricant must only be used in the 4.0 litre V8. The use of the correct oil for each engine is critical to its continued performance, reliability and ultimately warranty. Therefor 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 |
| 2038301/1 | 2020-01-17. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Mulsanne - iPad table - open and close function inoperative Customer statement / workshop findings: iPad table fails to deploy/basic settings lost Technical background: A software anomaly can cause early A level iPad table control modules to lose basic settings. Reinstating the basic settings via the initialisation process will resolve the issue short term. The software introduced at B level will avoid failures of this nature. Measure: In the event of an iPad table failing to open or close, then carry out the initialisation process. If this enables the function then the part number of the iPad control module should be checked. iPad table control modules found to be A level (3Y5963271A) must be replaced with parts at B level or higher (3Y5963271B). If on the occurrence of the above failure it is confirmed that B level parts are already fitted then raise a DISS request with your TSC Note on completion of this TPI both iPad table control module should be fitted with part number 3Y5963271B or higher |
| 2042177/1 | 2020-01-17. Service bulletin. STRUCTURE. Mulsanne Radiator Grille Finisher Adrift Customer statement / workshop findings: The Radiator Grille Finisher has partially separated from the Radiator Shell Assembly. Technical background: The adhesive attaching the Radiator Grille Finisher to the Mounting Blocks, mayin some instances fail, causing the Radiator Grille Finisher to become detached at one or more mounting locations. |
| 2042104/1 | 2020-01-17. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Telephone Functionality Complaint - Minimum Standards Required For Analysis Of Concerns Customer statement / workshop findings: An improved feedback method is required should a complaint of telephone functionality / quality be reported. Technical background: A minimum standards document is required to capture an accurate description of customer telephone issues. Measure: The attached document should be completed and attached to the relevant DISS query, this will allow a full understanding of the customer complaint and the circumstances in which the complaint becomes apparent. |
| 2043019/1 | 2020-01-17. Service bulletin. STEERING. Mulsanne Steering Gear - Hydraulic Oil leak Customer statement / workshop findings Increased steering effort, power steering pump noise or a hydraulic fluid leak from the underside of the vehicle. Hydraulic fluid leak from the Steering Rack Pinion Bearing. Technical background The Steering Rack may leak low pressure hydraulic fluid from the Pinion Bearing due to degradation of the Pinion Bearing oil seal. An improved material specification for the Pinion Bearing oil seal has been introduced. Measure Vehicles with less than 10.000 miles / 16.000 kilometres or under one year old Replace the Steering Rack Assembly Refer to Rep. Gr.48. Steering Rack To Remove and Fit. Vehicles with a repeat failure - Replace the Steering Rack Assembly Refer to Rep. Gr.48. Steering Rack To Remove and Fit. Vehicles with a first time failure, over 10.000 miles or 16.000 kilometres - replace the Pinion Bearing oil seal. Refer to Pinion Bearing Oil Seal Replacement Below. |
| 2042433/1 | 2020-01-17. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; AIR BAGS. Technical product information: Instrument panel - diagnostic trouble code A00049/B200049 Customer statement / workshop findings: ABS and or Air Bag warning light illuminated with no associated text in the Drivers Instrument Panel Technical background: A software anomaly in the Instrument panel, warning light check function, may cause warning light illumination when no system fault is present. Measure: In the event of LED tell-tales illumination that may include ABS or Air Bag warning in the Drivers Instrument Panel and Diagnostic Trouble Code (DTC) A00049 and or B200049 is reported and that DTC will not clear using service diagnostic tool then replace the Drivers Instrument Panel Rep. Gr. 90 Drivers instrument panel (DIP) (J285) To remove and fit |
| 2041887/2 | 2020-01-17. Service bulletin. STRUCTURE. Under bonnet trim - engine cover (SC16/01) Technical background: A number of under bonnet trim parts, engine covers, may have been assembled using incorrect material. The suspect material is mild steel mesh and may be prone to oxidation Remedy: Check grill for correct material and replace engine cover assembly if necessary |
| 2050542/4 | 2020-01-09. Service bulletin. EXTERIOR LIGHTING. 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. 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. |
| 2056407/2 | 2020-01-09. Service bulletin. STEERING; SUSPENSION. Condition: 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 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 including the modification of the engine control modules (chip tuning) Check the history of the vehicle to confirm 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 Technical Background It is the retailers responsibility to check and confirm if any TPIs are applicable to the customers complaint/issue, should an applicable TPI be available, apply it and complete a DISS complaint to include Workshop findings only (No repair query required) For correct diagnosis and repair, the attached Flowchart must be followed in conjunction with the Measure section of this TPI |
| 2051187/5 | 2020-01-09. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Condition: Poor engine running, reduced power, engine warning lamp illuminated. Technical Background: Technical Product Information (TPI) to assist Retailers when diagnosing poor engine running or misfires. Service: 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. |
| 2056582/2 | 2020-01-09. Service bulletin. STRUCTURE. Condition: 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 Technical Background It is the retailers responsibility to check and confirm if there are any TPIs which are applicable to the customers complaint/issue if there is an applicable TPI available, apply it and complete a DISS complaint to include Workshop findings only (No repair query required). For correct diagnosis and repair the attached Flowchart must be followed in conjunction with the Measure section of this TPI |
| 2052785/4 | 2020-01-09. Service bulletin. SERVICE BRAKES, HYDRAULIC. Condition: Customer statement: 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: 1. Brake discs or pads are close to their wear limit. 2. New brake pads and/or discs have not been properly bedded in after installation. 3. Aftermarket pads or discs are installed. 4. There is debris such as small stones, grit, road salt or sand between the brake disc and pad. 5. Discs are covered in rust. Rust can form when the vehicle has been stationary for long periods of time (Figure 1). 6. Discs have a groove in them (Figure 2) 7. There is chemical contamination on the braking surface of the disc due to a wheel or tyre cleaner being sprayed directly onto the disc (Figure 3). 8. There are pad marks on the brake disc as a result of the brake pad material transferring to the discs. This can occur when a vehicle has been stood for long periods of time in a wet or snowy environment (Figure 4). |
| 2053177/6 | 2020-01-09. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Condition: 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 Service: During routine diagnostic interrogation of vehicle systems use the attached document to determine the course of action to be taken. |
| 2053492/5 | 2020-01-09. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION. Condition: 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. Please follow and complete the check list within the Measure section of this TPI to help in diagnosing the issue (the check list does not need to be sent as an attachment should a DISS technical query be raised) . Should a leak be found from an air spring, compressor, valve unit or reservoir, please raise a DISS technical query and include as much information as possible including photograph/s of the leak/s location. Once the DISS ticket has been submitted please await clarification from your TSC before commencing with replacing any of the suspected faulty air springs. Mandatory reporting is applicable for all air spring related issues. |
| 2051562/5 | 2020-01-09. Service bulletin. ELECTRICAL SYSTEM. Condition: 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 |
| 2053177/5 | 2020-01-09. Service bulletin. EQUIPMENT. 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 Measure: During routine diagnostic interrogation of vehicle systems use the attached document to determine the course of action to be taken. |
| 2057664/1 | 2019-12-06. Service bulletin. STEERING; WHEELS; SUSPENSION. Customer statement / workshop findings: Clicking noise from the right and/or left front corner with steering input. Technical background: Verify that the customer complaint matches the video within the Bentley Hub Reference TPI Transaction number 2057664/1. Should the customer complaint match the issue refer to the Measure section of this TPI. Measure: 1) Replace the affected front steering upright and front wheel bearing. |
| 2024681-3 | 2019-07-29. Service bulletin. ELECTRICAL SYSTEM. PDI-Deactivating Transport and Loading modes |
| 2055070.1 | 2019-07-01. Service bulletin. EQUIPMENT. Bluetooth headphones not working |
| 2053492.4 | 2019-07-01. Service bulletin. SUSPENSION. Air spring fault finding |
| 2053492.3 | 2019-07-01. Service bulletin. SUSPENSION. Air spring fault finding |
| 2053177.3 | 2019-07-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. All Vehicle Variants - Spurious DTC List |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.