Service bulletins for the 2021 BMW 540i
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.
167 on file from NHTSA, as of 2026-10-19.
By type
By component
| B121221 | 2021-12-27. Service bulletin. BACK OVER PREVENTION. ???Due to an unfavorable operating point primarily in the low-end torque range, the fuel vapor scavenging that takes place in that range may result in incorrect detection of a mixture that is too rich. As a result, an incorrect mixture adaptation value is stored. |
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| B121121 | 2021-12-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO (TOUCH)SCREEN/MONITOR/UNIT. ???When charging the vehicle with an Occasional Use Charger (OUC) after previously using a Wallbox charger, the selected charging current might not be displayed correctly in the instrument cluster. |
| B121021 | 2021-12-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE. The customer complains that under moderate throttle application or on deceleration after throttle application, a Malfunction Indicator Lamp (MIL) is displayed in the instrument cluster. |
| B090121 | 2021-12-27. Service bulletin. EQUIPMENT. BMW offers a new special ISTA Installation made available for Roadside Assistance / Mobile Service technicians. |
| 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. |
| B611421 | 2021-12-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PRESSURE/TEMPERATURE SENSOR. The BMW Gesture Control function may fail permanently as a result of high temperature fluctuations. |
| B540521 | 2021-12-20. Service bulletin. EQUIPMENT:ELECTRICAL. The sunroof will not operate in either direction. |
| B511921 | 2021-12-20. Service bulletin. EQUIPMENT. A faulty componnent inside the trunk spindle drive. |
| 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. |
| B640721 | 2021-12-13. Service bulletin. ELECTRICAL SYSTEM. Only warm air comes out of the vents despite the air conditioning being switched on. The status indicator LED on the air conditioning control panel (IHKA) lights up green. |
| SIB120421 | 2021-12-13. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. A software optimization affecting vehicle performance has been made available. |
| 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. |
| B511314 | 2021-11-08. Service bulletin. LATCHES/LOCKS/LINKAGES:TRUNK LID:LATCH. The trunk lid/hatch does not open fully when unlatched with remote or hands-free operation. |
| B120821 | 2021-11-08. Service bulletin. ELECTRICAL SYSTEM. When charging the vehicle with an Occasional Use Charger (OUC) after previously using a Wallbox charger,the selected charging current might not be displayed correctly in the instrument cluster. |
| 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. |
| SIB 61 01 21 | 2021-10-25. Service bulletin. ELECTRICAL SYSTEM. 48 V battery may become totally discharged, and possible replacement needed if: a) The vehicle has been charged using a 12 V charger with the hood closed during a long stationary period, the. For example, the showroom or storage. b) Vehicles stored for an extended period connected to a low output solar or trickle charger. c) Vehicles stored for an extended period with no charger connected and not properly maintained 12 V battery. |
| B662919 | 2021-09-07. Service bulletin. EQUIPMENT:ELECTRICAL. The top view image of the vehicle is misaligned when observed in the Control Information Display (CID). When the vehicle is parked in a parking spot with line markings, it is clearly noticed in the CID that the lines are not parallel to the side of the vehicle. This may be noticed on either the driver side, passenger side or both. |
| B651721 | 2021-09-07. Service bulletin. EQUIPMENT:ELECTRICAL. The BMW key card cannot be activated. The activation menu in the BMW iDrive is missing. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.