WenmarOpen by Wenmar Pro

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

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
B6618202021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. ?GESTURE CONTROL UNINTENDED OPERATION: The Gesture camera inadvertently detects movement and performs unintended operations.
B6520202021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. ?PROGRAM HEAD UNIT: Satellite radio content is not available over IP, this does not affect channels received over satellite.
B6406172021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. ?AIR CONDITIONING COOLING IS INSUFFICIENT: There is insufficient or no cooling from the air-conditioner during high ambient temperatures. There also may be irregular A/C air flow from vents.
B6208182021-02-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. ?INSTRUMENT CLUSTER DISPLAY SHAKES-SHIFTS TO THE LEFT: The Instrument cluster intermittently flickers, shakes and has shifted to the left. The fault is resolved once the vehicle goes into sleep mode. The fault can reoccur at any point.
B6203202021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. MALFUNCTION INDICATOR LAMP (MIL) IS ILLUMINATED WITH FAULT MEMORY CDC152: The malfunction indicator lamp (MIL) is illuminated in the instrument cluster. The vehicles has no operating failures; only the MIL is illuminated.
B6126202021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. ?BMW DIGITAL KEY CARD IS NOT DETECTED WHEN PLACED ON THE NFC TRAY: The customer may have the following complaints: The Digital Key Card cannot be activated on the NFC (near field communication) charging tray (the activation pop-up does not appear although the Digital Key menu is present), Or the Digital Key Card is not detected when placed on the NFC tray.
B6125202021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. REMOTE CONTROL KEY OR BMW DISPLAY KEY BUTTONS NOT WORKING: The buttons on the remote-control key or BMW display key are not working, not allowing to unlock the vehicle and the tailgate or trunk compartment. Also, the buttons on a spare key do not work either.
B1213202021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. REPLACE ALL THE IGNITION COILS: The ignition coils may not have been produced to specifications which could lead to irregular running of the engine. A manufacturing defect affecting the ignition coil insulation.
B0901202021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. BMW REMOTE SOFTWARE UPGRADE IS NOT OFFERED FOR INSTALLATION: The customer complaints that the BMW Remote Software Upgrade (RSU) is not possible in their vehicle, though the Remote Software Upgrade menu is available in the vehicle and a download was performed by the vehicle or the BMW Connected App.
B6124202020-12-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. HIGH-VOLTAGE BATTERY CONDITION VERIFICATION (20V-601): After additional in-depth research and analysis of the corresponding data for these vehicles, we can safely conclude that the issue identified in Recall Campaign 20V-601 has been satisfied and no further repair is required.
B6607202020-11-23. Service bulletin. ELECTRICAL SYSTEM. SERVICE ACTION - REPLACE LEFT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B6608202020-11-16. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SERVICE ACTION - REPLACE RIGHT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the right rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B6607202020-11-16. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. SERVICE ACTION - REPLACE LEFT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B3204202020-11-16. Service bulletin. ELECTRICAL SYSTEM; STEERING. GROANING NOISE DURING HEIGHT ADJUSTMENT OF THE ELECTRIC STEERING COLUMN: A groaning type noise is heard during the height adjustment.
B6118202020-10-19. Service bulletin. ELECTRICAL SYSTEM. BMW TURBOCORD PORTABLE EV 120 V/240 V CHARGER: The BMW-approved accessory TurboCord electric vehicle (EV) charger will not charge the vehicle.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.