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
| B512119 | 2019-10-21. Service bulletin. EQUIPMENT. ACTIVE AIR FLAP FAULT DIAGNOSIS AND REPAIR: This correction is to be used for all situations where the following fault codes are stored: 138402 279B00 138220 13820D 13820E. |
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| B512419 | 2019-09-23. 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. |
| B512219 | 2019-09-23. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER. PASSENGER SIDE UPPER ACTIVE AIR FLAP STUCK OPEN/CLOSED. Upon visual inspection the passenger side upper active air flaps are either stuck open or closed and they will not move. There are no faults stored for the active air flaps. The pin used to attach the upper active air flap actuator has detached from the linkage. |
| B512119 | 2019-09-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. ACTIVE AIR FLAP FAULT DIAGNOSIS AND REPAIR. This Service Information Bulletin (Revision 2) replaces SI B51 21 19 dated August 2019. A check control message or MIL (Malfunction Indicator Lamp) may be illuminated with faults stored related to the upper and/or lower active air flap(s). |
| B121318 | 2019-09-23. Service bulletin. ENGINE. DME FC 21A02D - COMBUSTION CONTROL: VALVE LIFT AT IDLE This Service Information Bulletin (Revision #2) replaces SI B12 13 18 dated May 2018. Correction software level updated Procedure text changes made due to an ISTA/D test plan name change Adjusted text in the Warranty section for use with AIR and the ISTA/D test plan name change. The vehicle will run rough or hesitate when accelerating from a stationary position. |
| B651519 | 2019-09-23. Service bulletin. EQUIPMENT. SECURITY IMPROVEMENTS FOR CONNECTEDDRIVE. Security patches for non-safety critical vulnerabilities in BMW head units Entry Nav Entry Media NBT and NBT EVO. |
| B611219 | 2019-09-23. Service bulletin. EQUIPMENT. DELIVERY STOP: GEAR SELECTOR SWITCH. |
| B521619 | 2019-09-23. Service bulletin. SEATS. RATTLING NOISE FROM THE 2ND ROW SEAT BACKREST. A rattling noise can be heard from the backrest of the 2nd row bench seat. This noise can be heard over bumps while driving or if someone is sitting in the seat. |
| B521119 | 2019-08-19. 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. |
| B512019 | 2019-08-19. 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. |
| B123018 | 2019-08-19. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. ERRONEOUS FAULT 1F2505 IS STORED IN THE DME This Service Information bulletin replaces SI B12 30 18 dated November 2018. This fault does not cause any drivability complaints or engine warning lamps. |
| B661919 | 2019-07-22. Service bulletin. ELECTRICAL SYSTEM. COMFORT ACCESS AND COMFORT GO NOT POSSIBLE. Vehicle cannot be opened/locked or started via Comfort Access. Electrostatic charge puts the remote control key into a deep sleep. |
| B651419 | 2019-07-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. HEAD UNIT NBT EVO (HU-H2) PROGRAMMING ABORT. During programming several aborts can occur in the head unit NBT EVO (HU-H2). |
| B320619 | 2019-07-22. Service bulletin. ELECTRICAL SYSTEM. VARIOUS CHECK CONTROL MESSAGES FOR DRIVER ASSISTANCE SYSTEMS. |
| B122119 | 2019-07-22. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH. HIGH ENGINE SPEED IMMEDIATELY AFTER STARTING. In rare circumstances after the engine is started with the Start-Stop button the engine speed may immediately increase to a high constant RPM (approximately 3000 rpm). |
| B110119 | 2019-07-22. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. ENGINE VIBRATIONS OR NOISE This Service Information bulletin replaces SI B11 01 19 dated February 2019. |
| B840214 | 2019-06-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. INFORMATION New information provided by this revision is preceded by this symbol. This Service Information bulletin replaces SI B84 02 14 dated September 2018. |
| B340819 | 2019-06-24. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE. VARIOUS CHECK CONTROL MESSAGES FOR DRIVER ASSISTANCE SYSTEMS. The following messages are displayed in the Check Control (CC) display: Continued driving possible. Driving stabilization. Driving stabilization restricted driving stabilization. Drive with caution to the nearest authorized BMW Service workshop and/or Collision warning/you can continue driving. Collision warning fully or partially failed. No warning is given if the distance from the vehicle in front is too short. |
| B121619 | 2019-06-24. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. ERRONEOUS ELECTRIC FAN FUNCTION FAULT STORED IN THE DME. The following faults may be erroneously stored in the Digital Motor Electronics (DME): And: There is no customer-facing vehicle symptom(s) or related check control message displayed. A software error may cause these faults to be erroneously stored in the Digital Motor Electronics (DME). |
| B110717 | 2019-06-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. FAULT 118002 - MIXTURE TOO RICH SETS DURING WINTER WITH COLD AMBIENT TEMPERATURES. The Service Engine Soon (MIL) light is on with the following fault stored in the Digital Motor Electronics (DME). In the situation being described the fault is primarily stored during the cold winter months along with the use of winter fuel. |
| B620518 | 2019-05-20. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. HEADS UP DISPLAY SPORADICALLY INOPERATIVE. Fault memory entry "B7F6E4 HUD: Fault in display backlighting "is stored in the instrument cluster. Intermittently the Head-Up Display (HUD) may deactivate. |
| B612315 | 2019-05-20. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. The Low Washer Fluid Warning Light is illuminated when the Washer Fluid Tank is Full This Service Information bulletin supersedes SI B61 23 15 dated April 2016. |
| B610419 | 2019-05-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED This Service Information bulletin replaces SI B61 04 19 dated March 2019. |
| B511319 | 2019-05-20. 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. |
| B170118 | 2019-05-20. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT; STEERING. HEATER HOSE IS CONTACTING THE STEERING SHAFT This Service Information bulletin replaces SI B17 01 18 dated April 2018. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.