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Service bulletins for the 2018 BMW 640i

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.

279 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
B6206182018-08-06. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. FUEL GAUGE INCORRECTLY DISPLAYING LOW FUEL LEVEL: Occasionally, on restart after refueling, the fuel gauge will display the fuel level as low (minimum) and the range display will be at an implausible (maximum) value.
B6205182018-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. HEADS UP DISPLAY SPORADICALLY INOPERATIVE: Fault memory entry ÒB7F6E4 HUD: Fault in display backlighting Òis stored in the instrument cluster.
B6144172018-08-06. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM. WINDOW WILL NOT CLOSE AFTER REPEATED BUTTON PUSHES: One or more power windows stops operating after repeated button pushes. This usually occurs when trying to close the window.
B8403142018-07-16. Service bulletin. EQUIPMENT:ELECTRICAL. Bluetooth Connection Failures: There are various connectivity failures with the following devices: Apple iPhones: Samsung S6 and the S6 Edge.
B6513162018-07-16. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NBT-EVO (NEXT GENERATION NAVIGATION PROFESSIONAL) HEAD UNIT CANNOT BE SWAPPED BETWEEN VEHICLES FOR TESTING. ÕCOMPONENT PROTECTION ACTIVEÕ
B6503182018-07-16. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NO AUDIO PLAYBACK AFTER REPLACING THE HEAD UNIT HIGH 2 (HU-H2): After replacing the Head Unit High (HU-H2) and performing ISTA4 programming, there is no audio playback.
B5130162018-07-16. Service bulletin. STRUCTURE:BODY:TAILGATE. TAILGATE UNINTENTIONALLY OPENS: Trunk/tailgate may open when vehicle is locked.
B3101122018-07-16. Service bulletin. STEERING; POWER TRAIN:AXLE ASSEMBLY. CRACKING NOISES FROM THE FRONT AXLE AREA WHILE TURNING THE WHEELS, WHEN STATIONARY OR PARKING: Cracking noises are heard from the front axle area while maneuvering at low speeds (e.g., parking lot maneuvers) or when turning the steering wheel while stationary.
B8408182018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT. HEAD UNIT HIGH 2 RESET WHILE BLUETOOTH IS CONNECTED: The following event may cause an unexpected reset of the Head Unit High 2 (NBT EVO) when:
B8407182018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. IPHONE: CALL LIST MISSING AFTER RESTART: The call list from iPhone 8 or iPhone X, that is displayed, is missing after cycling the ignition.
B6610182018-05-21. Service bulletin. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. REAR VIEW CAMERA CANNOT BE CONTROLLED VIA IDRIVE: When the Parking menu is active (reverse gear selected) in the CID (Central Information Display), activation or deactivation of the rear view camera via the iDrive controller does not work.
B6608172018-05-21. Service bulletin. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. REAR VIEW CAMERA FAILS TO DISPLAY IMAGE: Sporadically, when the rear view camera is activated, either via selecting reverse with the shift selector or by direct camera selection, no image appears in the display.
B6605182018-05-21. Service bulletin. ELECTRICAL SYSTEM. COMFORT ACCESS SPORADICALLY INACTIVE VIA DOOR HANDLE: Sporadically, CA (Comfort Access) locking or unlocking of the vehicle does not work via the door handles.
B6513162018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. NBT-EVO Head Unit Cannot be Swapped between Vehicles for Testing: If either the NBT-EVO head unit or Body Domain Controller (BDC) are swapped into a different vehicle they will cause the head unit NBT-EVO to enter a locked mode once it recognizes a different VIN.
B6212152018-05-21. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. INSTRUMENT CLUSTER OUTSIDE TEMPERATURE DISPLAY IMPLAUSIBLE: In the Instrument Cluster (Kombi) display you may observe an implausible outside temperature reading.
B6122172018-05-21. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC COMMUNICATION WITH FLEXRAY CONTROL MODULES NOT POSSIBLE: There are no customer complaints associated with this issue.
B5107182018-05-21. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. POWER WINDOWS WILL NOT INITIALIZE AFTER WINDOW LIFT MOTOR REPLACEMENT: The windows are unable to be initialized after replacement of a window lift motor.
B5106182018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. ACTIVE REAR SPOILER MALFUNCTION: A check control message (Message ID 822) may be displayed, indicating that the rear spoiler cannot be adjusted and the driver is instructed not to exceed 80 mph.
B3405152018-05-21. Service bulletin. SUSPENSION:FRONT; SUSPENSION:FRONT:WHEEL BEARING. TICKING NOISE FROM THE FRONT AXLE WHEN CORNERING: The customer may complain of a metallic ticking noise from the front axle when cornering, maneuvering, parking or pulling away from a parking space.
B3403182018-05-21. Service bulletin. PARKING BRAKE. ELECTROMECHANICAL HOLDING BRAKE (EMF) ERROR
B3101122018-05-21. Service bulletin. WHEELS; SUSPENSION:FRONT; SUSPENSION:FRONT:WHEEL BEARING. CRACKING NOISES FROM THE FRONT AXLE AREA WHILE TURNING THE WHEELS, WHEN STATIONARY OR PARKING
B1701182018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. HEATER HOSE IS CONTACTING THE STEERING SHAFT: The customer may complain of a coolant leak from the front of the vehicle, or a noise when turning the steering wheel.
B1207182018-05-21. Service bulletin. ENGINE. DME FC 1C0102 IS STORED WITH NO OTHER RELATED FAULTS: The following fault has been stored in the Digital Motor electronics (DME) fault memory with no other engine oil pressure faults stored.
B8402142018-05-14. Service bulletin. ELECTRICAL SYSTEM. ConnectedDrive/BMW Assist System Diagnosis Information
B6623172018-05-07. Service bulletin. EQUIPMENT:ELECTRICAL. CONTACTLESS TAILGATE (SMART OPENER) IS TOO SENSITIVE: When the remote is located in the range of the Smart Opener operation may be the contactless tailgate (Smart Opener) opens / close unintentionally from objects in the vicinity of the rear of the vehicle; for example by a gas filling hose.

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