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Service bulletins for the 2020 BMW 330i

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.

306 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
B6105202020-03-16. Service bulletin. ELECTRICAL SYSTEM. CCM DISPLAYED "INCREASED BATTERY DRAIN" CAUSED BY CONTROLLER. A yellow CCM (Check Control Message) ID 415 is displayed- "Increased battery drain! // Battery. Electrostatic discharge at standstill / start engine. Energy management" The results of the Energy Diagnosis test plan identifies the Controller as the root cause of the CCM. The Controller delays the vehicle going to sleep by up to 6 minutes. In some cases this will cause the CCM 415 to be displayed when starting the vehicle. Replacing the Controller in this case will not correct this situation.
B6104202020-03-16. Service bulletin. STEERING; ELECTRICAL SYSTEM. COMFORT ACCESS & COMFORT GO DO NOT WORK SPORADICALLY IN WARM TO HOT TEMPERATURE: At warm to hot outside temperatures (above 60C° F) the customer may complain that the Comfort Access and Comfort Go sporadically don't work. Vehicle can be opened by pressing the remote control unlock buttons and- Engine start is possible by placing the remote control key on the steering column ring antenna. The situation corrects itself after the vehicle goes to sleep or cools down. At warm to hot outside temperatures there may be a temporary interruption in communication between the comfort access functions in the BDC. This leads to sporadic operating failure of the comfort access function.
B6101202020-03-16. Service bulletin. ELECTRICAL SYSTEM. ACCESSORIES DO NOT POWER ON: Customer is not able to power accessories using the 12 volt power socket. Design change to reduce short circuits and blown fuses.
B8404162020-02-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. SOS MALFUNCTION DISPLAYED This Service Information Bulletin (Revision 1) replaces SI B84 04 16 dated September 2016. One or all the following may be experienced in the vehicle: An SOS malfunction is seen in the Kombi (aka instrument cluster) When pressing the E-Call/SOS button in the overhead console nothing happens Fault code B7F33C (internal ECU error) is stored in the Telematics control unit (ATM/TCB2) There are 2 known causes for this failure. They are as follows: Software file missing from the ATM/TCB2 control module Water leak at the "shark fin" roof antenna (aka roof aerial) leading to corrosion in the ATM/TCB2 control module.
B8402202020-02-18. Service bulletin. ELECTRICAL SYSTEM. REMOTE 3D VIEW NOT AVAILABLE: Remote 3D View cannot be launched In the BMW ConnectedDrive App. Software error in the Advanced Telematics Module 2 (ATM2).
B8401202020-02-18. Service bulletin. ELECTRICAL SYSTEM. BMW CONNECTEDDRIVE SERVICES ARE NOT AVAILABLE: The BMW ConnectedDrive services are not available for an extended period. This may include: Calls in the BMW Assistance app (Concierge Service) Vehicle data and status in the BMW ConnectedDrive app Remote services Remote 3D View Real Time Traffic Information (RTTI) Weather News Software error in Advanced Telematics Module 2 (ATM2).
B6601202020-02-18. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. ACTIVE PARK DISTANCE CONTROL: SETTING MENU NO LONGER AVAILABLE AFTER PROGRAMMING. The activation setting for Active Park Distance Control (aPDC) is no longer available after programming. In this case the customer can no longer activate or deactivate the function. Note: The setting (activated or de-activated) which was selected prior to programming the vehicle will be retained. Software error in the head unit HU-H3 occurring with vehicle Integration Level (I-Level) S18A-19-11-500 to S18A-19-11-540.
B6121192020-02-18. Service bulletin. ELECTRICAL SYSTEM. SERVICE ACTION: INSPECT AND REWORK ENGINE COMPARTMENT WIRING HARNESS: Depending on the severity of the wiring damage this can lead to a multitude of electrical malfunctions and indicator lights on the Instrument Cluster (KOMBI) or Central Information Display (CID). It is possible that the wiring harness may be damaged even if routed correctly. This is due to- The confined mounting position of the affected engine wiring harness in combination with the component tolerances Sharp-edged components in the vicinity of the wiring harness
B6209192020-01-21. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. INSTRUMENT CLUSTER REMAINS DARK AFTER STARTING THE VEHICLE: Instrument cluster remains dark after starting the vehicle. After a restart normal functionality is restored. Software error in the KOMBI (Instrument Cluster).
B1203192020-01-21. Service bulletin. ELECTRICAL SYSTEM. ENGINE DOES NOT START BELOW FREEZING TEMPERATURES: Engine designation correction Parts availability Warranty. The engine will not start at temperatures below freezing. The starter does not turn and engage.

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