Service bulletins for the 2020 BMW M340i
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.
251 on file from NHTSA, as of 2026-10-19.
By type
By component
| B650421 | 2021-05-24. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RETROFIT SATELLITE RADIO (OPTION CODE SA655): The affected vehicles were produced with Preparation BMW Satellite Radio (option code SA 693) instead of with Satellite Radio (option code SA 655). |
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| B620121 | 2021-05-24. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. INSTRUMENT CLUSTER BASIC PROGRAMMING ABORT: While programming with the current ISTA version, there is a repeated programming abort for the instrument cluster (Kombi). |
| B610615 | 2021-05-24. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Washer Fluid Reservoir Rattles While Driving on Rough Roads: Rattling noises heard from vicinity of glove box. |
| B510721 | 2021-05-24. Service bulletin. STRUCTURE:BODY:DOOR. INCREASED EFFORT REQUIRED TO OPEN DOORS: One or more doors may require increased effort to open. |
| B662919 | 2021-04-26. Service bulletin. BACK OVER PREVENTION. TOP VIEW CAMERA IMAGE IS MISALIGNED: The top view image of the vehicle is misaligned when observed in the Control Information Display (CID). |
| B630318 | 2021-04-26. Service bulletin. EXTERIOR LIGHTING; AIR BAGS. LED LIGHT CARPET IS DIM OR DISTORTED: The light carpet may appear dim or distorted on one or both sides. . |
| B610321 | 2021-04-26. Service bulletin. EQUIPMENT. PROGRAMING THE DUAL STORAGE SYSTEM AND REPLACE IT IF NECESSARY: The 12 V battery's dual storage system (DSS) may contain a software error which intermittently causes a continuous resetting of the microcontroller and communication failure. |
| B610120 | 2021-04-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. ACCESSORIES DO NOT POWER UP FROM THE FRONT 12 V POWER SOCKET PLUG: Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12-volt power socket plug. |
| B090120 | 2021-04-26. Service bulletin. BACK OVER PREVENTION:SOFTWARE. BMW REMOTE SOFTWARE UPGRADE IS NOT OFFERED FOR INSTALLATION: The customer complains that the BMW Remote Software Upgrade (RSU) is not possible in his/her 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. |
| B650121 | 2021-03-15. Service bulletin. EQUIPMENT. SPORADIC FAILURE OR CRACKING NOISE IN BASS SPEAKERS: No Bass or a cracking noise can be heard from the bass speakers. |
| B630321 | 2021-03-15. Service bulletin. EXTERIOR LIGHTING. CONDENSATION IN TAILLIGHT: Condensation is present on the inner surfaces in one or both taillights |
| B610121 | 2021-03-15. Service bulletin. ELECTRICAL SYSTEM. VOLT BATTERY MAINTENANCE: 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. |
| B540819 | 2021-03-15. Service bulletin. VISIBILITY. SUNROOF REVERSES WHEN CLOSING: The sunroof reverses direction (anti-traps) just as the sunroof glass meets the wind deflector. The sunroof may not properly initialize as a result. |
| B511318 | 2021-03-15. Service bulletin. VISIBILITY. LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE: Faulty exterior rearview mirror electronics have created a short on the LIN bus, damaging the mirror glass and causing functional errors in power window and exterior mirror operation. |
| B510321 | 2021-03-15. Service bulletin. VISIBILITY; STRUCTURE. TICKING NOISE FROM A-PILLAR AREA: A ticking noise is present in the A-Pillar and side mirror area when driving at speeds of approximately 40 MPH. |
| B650221 | 2021-02-22. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES; ELECTRICAL SYSTEM. FALSE ALARM ACTIVATION TRIGGERED BY INTERIOR ULTRASOUND SENSOR: The DWA (anti-theft alarm) triggers for no apparent reason with all the vehicle's doors and windows closed. |
| B611320 | 2021-02-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. CHECKING THE DUAL STORAGE SYSTEM AND REPLACE IF NECESSARY: In the event of an accident, the two-battery Dual Storage System (DSS) is disconnected from the electrical system via an internal relay. |
| B610121 | 2021-02-22. Service bulletin. STRUCTURE:BODY:HOOD; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD: After the vehicle has been charged using a 12 V charger with the hood closed during a long stationary period, the 48 V battery may be totally discharged, and possible replacement is needed. |
| B662419 | 2021-02-08. Service bulletin. STEERING. REMOTE CONTROL IS NOT DETECTED: 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. |
| B661820 | 2021-02-08. Service bulletin. ELECTRICAL SYSTEM. ?GESTURE CONTROL UNINTENDED OPERATION: The Gesture camera inadvertently detects movement and performs unintended operations. |
| B652020 | 2021-02-08. Service bulletin. EQUIPMENT. ?PROGRAM HEAD UNIT: Satellite radio content is not available over IP, this does not affect channels received over satellite. |
| B662419 | 2021-02-01. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. REMOTE CONTROL IS NOT DETECTED: 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. |
| B661820 | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. ?GESTURE CONTROL UNINTENDED OPERATION: The Gesture camera inadvertently detects movement and performs unintended operations. |
| B652020 | 2021-02-01. 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. |
| B620320 | 2021-02-01. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.