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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

Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
B5146162023-06-26. Service bulletin. STRUCTURE:BODY:TAILGATE. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
B5408192020-12-21. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. 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.
B5127202020-12-21. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP; STRUCTURE:BODY. FUEL FILLER DOOR WILL NOT OPEN: The fuel filler door (aka flap) will not open. In rare cases, if the vehicle is locked using the remote control key and the fuel filler door is pushed closed simultaneously, the fuel door can enter a locked state that cannot be unlocked.
B0112192020-11-23. Service bulletin. STRUCTURE. FRONT GRILLE UPPER/LOWER ACTIVE AIR FLAPS: LTD WTY EXT TO 15 YEARS/150,000 MILES: Component-Specific Limited Warranty Extension This component-specific limited warranty extension applies to defects in materials or workmanship. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Air flap issues caused by debris/blockage from outside influences is not a defect in materials or workmanship and is not claimable. During the extended limited warranty coverage period (Eligible vehicles that are beyond the 4 year/50,000 mileage New Vehicle Limited Warranty coverage), Active Air Flap cosmetic defect issues are not covered.
B0112192020-11-16. Service bulletin. STRUCTURE:FRAME AND MEMBERS. FRONT GRILLE UPPER/LOWER ACTIVE AIR FLAPS: LTD WTY EXT TO 15 YEARS/150,000 MILES: Component-Specific Limited Warranty Extension This component-specific limited warranty extension applies to defects in materials or workmanship. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Air flap issues caused by debris/blockage from outside influences is not a defect in materials or workmanship and is not claimable. During the extended limited warranty coverage period (Eligible vehicles that are beyond the 4 year/50,000 mileage New Vehicle Limited Warranty coverage), Active Air Flap cosmetic defect issues are not covered.
B5408192020-04-20. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. SUNROOF REVERSES WHEN CLOSING: This Service Information Bulletin (Revision 3) replaces SI B54 08 19 dated December 2019. The sunroof reverses direction (anti-traps) just as the sunroof glass meets the wind deflector. The sunroof may not properly initialize as a result.
B5108202020-04-20. Service bulletin. VEHICLE SPEED CONTROL; STRUCTURE:BODY:DOOR:HINGE AND ATTACHMENTS; BACK OVER PREVENTION. GROANING OR CRACKING NOISE WHEN OPENING OR CLOSING THE DOORS: A groaning or cracking sound is present when opening and/or closing any of the doors. Interference between the door panel and door.
B3403192019-12-16. Service bulletin. STRUCTURE:BODY:DOOR. HUMMING RUMBLING NOISES AFTER OPENING THE DOOR: After waking up/unlocking and entering the vehicle a humming/rumbling noise may occur.
B5124192019-09-23. Service bulletin. STRUCTURE; EQUIPMENT. CRACKING NOISE FROM DASHBOARD TRIM. A cracking noise is present from the area of the dashboard trim when heating or cooling the vehicle. Thermal expansion of the plastic components of the decorative trim causes cracking noises.
B5211192019-08-19. Service bulletin. SEATS:BARRIERS; STRUCTURE; SEATS. CLICK CLACK NOISES IN BACKREST AREA OF FRONT SEAT: An alternating "click-clack" noise is heard from the backrest area of the front seat when an occupant sits in the seat or when the vehicle is cornering. Due to the elimination of the NED (Non-Electrical Diagnosis) test plan for seat noise from ISTA we are releasing this bulletin. Seat backrest frame is touching the seat cover.
B5120192019-08-19. Service bulletin. STRUCTURE:BODY:TAILGATE. Rattle noise from tailgate: A rattle noise is present in the area of the tailgate while driving. The tailgate stop is improperly adjusted.
B5113192019-05-20. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH; STRUCTURE:BODY:DOOR. DOOR LATCHING COMPLAINTS IN COLD WEATHER. Below freezing temperatures: One or more doors (front or rear) may not open or After opening they may not correctly latch. A leaking seal on the outer Bowden release cable may allow water to enter the cable sheathing and freeze.
B5113192019-05-20. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH; STRUCTURE:BODY:DOOR. DOOR LATCHING COMPLAINTS IN COLD WEATHER. Below freezing temperatures: One or more doors (front or rear) may not open or After opening they may not correctly latch. A leaking seal on the outer Bowden release cable may allow water to enter the cable sheathing and freeze.
B5130162018-07-16. Service bulletin. STRUCTURE:BODY:TAILGATE. TAILGATE UNINTENTIONALLY OPENS: Trunk/tailgate may open when vehicle is locked.

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