Service bulletins for the 2021 BMW 840i
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.
125 on file from NHTSA, as of 2026-10-19.
By type
By component
| B610121 | 2022-05-31. Service bulletin. EQUIPMENT:ELECTRICAL. 48 V battery may become totally discharged, and possible replacement needed. |
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| B330120 | 2022-05-31. Service bulletin. SERVICE BRAKES. There is a shudder or jerking feeling coming from the rear of the vehicle at low speeds and low engine loads while turning. Incorrect actuating pressure in the M-differential clutch plates. |
| B110621 | 2022-05-31. Service bulletin. EQUIPMENT. Information updated about engine oil filter cap drain plug. When performing an engine oil service on vehicles equipped with a N63M, N63B or S63M engines; the ETK states to use "Set oil filter element" P/N 11 42 5 A33 C42 or P/N 11 42 5 A33 C43. The part numbers are not available at the moment. |
| B540122 | 2022-05-16. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. When locking the vehicle using the remote, the rear roof sunblind closes. It will re-open when unlocking the vehicle. |
| B661519 | 2022-05-16. Service bulletin. EQUIPMENT; LANE DEPARTURE; STEERING. The steering intervention for Lane Departure Warning (LDW) is too strong (severe), which can create an uncomfortable feeling for the driver. Background: Steering intervention helps keep the vehicle in the lane if the system detects that a lane marking has been crossed. The steering intervention can be noticed on the steering wheel and can be manually overridden at any time. |
| B840917 | 2022-01-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. While using the wireless charger, one or both of the following may occur: 1) The BMW display key or mobile phone becomes hot to the touch. 2) The device switches off due to over temperature (built-in device protection). |
| B840621 | 2022-01-24. Service bulletin. EQUIPMENT; COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM. The SIM card installed in the telematics control unit (ATM2) connects to different mobile providers' networks. However, due to a missing parameter, this does not work and can cause disruption in BMW ConnectedDrive services in areas with insufficient network coverage. |
| B662419 | 2022-01-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE; STEERING. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column. |
| B652121 | 2022-01-24. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SiriusXM satellite radio is not working and does not display a channel list. |
| B612219 | 2022-01-24. Service bulletin. EQUIPMENT:ELECTRICAL; STRUCTURE:BODY:DOOR. The customer states that the vehicle locks itself when the last door was closed, even though the remote control/display key was inside the vehicle. |
| B320420 | 2021-12-27. Service bulletin. BACK OVER PREVENTION. A groaning type noise is heard during the height adjustment. |
| B090121 | 2021-12-27. Service bulletin. EQUIPMENT. BMW offers a new special ISTA Installation made available for Roadside Assistance / Mobile Service technicians. |
| B011421 | 2021-12-27. Service bulletin. TIRES. BMW of North America, LLC (BMW NA) is administering a Special Tire-specific Support Program for irregular uneven inner shoulder tire wear. |
| B001020 | 2021-12-27. Service bulletin. ELECTRICAL SYSTEM. BMW of North America (BMW NA) has made information available online to customers about software versions, including any changes to vehicle functionality that will result from each update. |
| B611621 | 2021-12-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. The "energy management" Check control message (ID code 415) is falsely displayed when entering the vehicle. |
| B650919 | 2021-12-20. Service bulletin. ELECTRICAL SYSTEM. Customer states the following about their vehicle: active radio or music source is interrupted, the navigation is no longer available, a black screen is shown in the Control Display, the system works again after a short interruption. |
| B662419 | 2021-12-13. Service bulletin. STEERING. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle maynot start when placing the key against the steering column. |
| B640821 | 2021-12-13. Service bulletin. ELECTRICAL SYSTEM. The air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38F to 60F +) without changing any climate control settings. In some cases the air conditioning may have stopped blowing cold air altogether. |
| SIB340721 | 2021-12-13. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC. When starting the vehicle vehicle at standstill, various yellow Check Control Messages CCMs appear. ID code 00042: Brake system. Additional notes: Avoid abrupt braking as far as possible. Drive at a moderate speed. Have it checked by your nearest Service Center. ID code 2046: Braking force assistance. Additional notes: Braking force assistance failure. Higher pedal force required for vehicle deceleration. Drive at a moderate speed. Have it checked by your nearest Service Center. |
| B090321 | 2021-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. In some rare cases a customer vehicle might be excluded from one or more Remote Software Upgrade (RSU) campaigns. This SIB gives an overview how to identify these vehicles and how to proceed in case of a customer complaint. |
| B090221 | 2021-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. With the introduction of BMW Remote Software Upgrade, all Service Pack 18 vehicles and partial Service Pack 15 vehicles may receive new functionalities or modifications in their features with a new Software Update. |
| B610721 | 2021-11-08. Service bulletin. STEERING. Groaning, scraping, or squeaking noise coming from the steering wheel area in the interior of the vehicle,when turning the steering wheel. |
| SIB 62 03 21 | 2021-10-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. When the vehicle is operated in Sport Mode, the engine speed is no longer displayed in the BMW Head-Up Display (HUD). |
| SIB 61 09 21 | 2021-10-25. Service bulletin. EQUIPMENT:ELECTRICAL. Check control message (CCM-ID 49) "You can continue driving. Drivetrain". In addition, the following information is shown on the Central Information Display (CID): "You can continue to drive. No roadside assistance necessary. To avoid subsequent damage, arrange an appointment with your Service Partner". |
| SIB 61 04 21 | 2021-10-25. Service bulletin. EQUIPMENT:ELECTRICAL. The customer may complain of a check control message stating "Safe share detected" (CCM-ID 953). Check control message can be verified by checking key reader information or performing the Check control message history service function. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.