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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
B5107182019-01-07. Service bulletin. ELECTRICAL SYSTEM. POWER WINDOWS WILL NOT INITIALIZE AFTER WINDOW LIFT MOTOR REPLACEMENT. The windows are unable to be initialized after replacement of a window lift motor. This only affects vehicles with I-level S15A-18-03-511 or lower. For vehicles with I-level S15A-18-03-511 or lower, there is a software error in the BDC (Body Domain Controller) that affects initialization of replacement window lift motor electronics.
B1608182019-01-07. Service bulletin. FUEL SYSTEM, GASOLINE. SERVICE ACTION: CHECK AND, IF NECESSARY, REPLACE THE FUEL DELIVERY UNIT. The fuel delivery unit (in-tank fuel pump) may be the incorrect part installed for the Model/Market.
B8406162018-12-03. Service bulletin. ELECTRICAL SYSTEM. ?BMW ONLINE NON-FUNCTIONAL: CHECK ICC-ID IN ACCOUNT. BMW Online/BMW ConnectedDrive not functional. Vehicle and service cockpit have different ICC-ID's (Integrated Circuit Card Identifier).
B8402142018-12-03. Service bulletin. ELECTRICAL SYSTEM. ?CONNECTEDDRIVE/BMW ASSIST SYSTEM DIAGNOSIS INFORMATION. ConnectedDrive/BMW Assist features are partially or completely inoperative. This Service Information bulletin is being published because vehicles are down for an extended period of time when researching system failures with ConnectedDrive or BMW Assist. This Service Information bulletin will assist you both in identifying the issue and providing technical support. CAUSE Not enough information is available for BMW NA engineers to assist the technician in diagnosing the root cause.
B6620172018-12-03. Service bulletin. ELECTRICAL SYSTEM. ?DISPLAY KEY IS NON-FUNCTIONAL. Display key is non-functional. Display key cannot be charged or switched on. Possibly defective display key.
B2701182018-12-03. Service bulletin. STEERING; ELECTRONIC STABILITY CONTROL (ESC). "?DYNAMIC STABILTY CONTROL WARNING ON WITH LIMITED POWER STEERING ASSIST This Service Information bulletin replaces SI B34 09 16 dated January 2017 What's New: ? This SIB is a complete revision of B34 09 16. Steering feels heavy (limited power assist) The Dynamic Stability Control (DSC) light and Service Engine Soon light may be on. The following message may be displayed in the Check Control (CC): * CCM 350 ""It is possible to continue to drive. All-wheel drive system."" * Other CC messages may be stored related to: Restraint system / lane change warning / distance information / pedestrian protection. One or both of the following faults are stored in the DSC: * D36500 - Message fault (xDrive actuator information, ID: XDRV_ACT_INFO) - Timeout * D356E4 - Message fault (status of distribution of the longitudinal torque on the front axle rear axle, ID: ST_REPAT_XTRQ_FTAX_BAX) - Timeout The following faults can also be stored in the DDE or DME: * DDE: CD95E0 - Message (ST_REPAT_XTRQ_FTAX_BAX, 19.3.4,FX), Timeout: Message (status of distribution of longitudinal torque of front axle rear axle) from longitudinal torque distribution failed * DME: CDA056 - FlexRay, message (status of distribution of longitudinal torque of front axle rear axle / xDrive actuator information, 19.3.4): missing Internal fault in the transfer case control unit (Longitudinal Torque Module - LMV). "
B1207182018-11-26. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 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: ??1C0102 - oil pressure control, plausibility, static: Pressure too low This fault will not cause a customer complaint or a Check Control Message (CCM). The fault is typically identified during unrelated diagnostics. Software error in the Digital Motor Electronics (DME) may cause the fault code to be erroneously stored. Only Integration level 17-11-5xx and higher are affected.
B7204172018-11-26. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; SEAT BELTS. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED. Acoustic and visual warnings indicate that the front passenger seat is occupied and the seat belt is not fastened, when the seat is actually unoccupied. If the situation is currently present, sit in the seat and move the seat to a different position then the POL (Passenger Occupancy Light) light will function correctly. In some cases the Air bag Warning Light was illuminated. Advanced Crash Safety Module (ACSM) fault "930A1C - Front passenger seat occupancy detection transmitting fault (moisture)" is stored. 1. Electronics (for example smart phones or laptops) are connected to the USB charging port or cigarette lighter and placed on the seat. 2. The seat was wet (e.g. very high humidity, spilled liquids or rain). 3. Faulty plug connection to Evaluation Electronics CIS (Capacitive Interior Sensing). 4. Excessive spacing between seat mat sensor signal wires and their grounding shield sleeve. * Drying the seat mat due to moisture. * If there is no moisture, secure loose cables and install 2 cable ties * If the 2 cables ties are already installed properly, replace the seat mat * Statement added to SI - do not replace the CIS electronics or the ACSM module for this siutation.
B6608172018-11-26. Service bulletin. BACK OVER PREVENTION; VISIBILITY:REARVIEW MIRRORS/DEVICES. 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. Camera function returns after terminal change. Note: This error situation can rarely, if ever, be duplicated on demand. Head-unit interface software error for the rear view camera.
B1608182018-11-26. Service bulletin. FUEL SYSTEM, GASOLINE. SERVICE ACTION. CHECK AND, IF NECESSARY, REPLACE THE FUEL DELIVERY UNIT. The fuel delivery unit (in-tank fuel pump) may be the incorrect part installed for the Model/Market.
B6208182018-10-09. Service bulletin. ELECTRICAL SYSTEM. INSTRUMENT CLUSTER DISPLAY SHAKES-SHIFTS TO THE LEFT: The Instrument cluster intermittently flickers, shakes and has shifted to the left.
B6206182018-10-09. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. FUEL GAUGE INCORRECTLY DISPLAYING LOW FUEL LEVEL AFTER VEHICLE IS REFUELED: 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.
B6205182018-10-09. Service bulletin. ELECTRICAL SYSTEM. HEADS UP DISPLAY SPORADICALLY INOPERATIVE: Fault memory entry ÒB7F6E4 HUD: Fault in display backlighting is stored in the instrument cluster.
B5205182018-10-09. Service bulletin. SEATS; ELECTRICAL SYSTEM. SEAT MEMORY SWITCH SPORADICALLY NOT FUNCTIONING: Selecting one of the saved seat positions (via the memory seat position switch on the door panel), fails to work.
B8409182018-10-09. Service bulletin. EQUIPMENT. PHONE CONTACTS: HEADUNIT BASIC 2 SORTING ORDER: Improper sorting of phone contacts, in the on-board computer or in the Central Information Display (CID), upon connecting to the vehicle:
B8402142018-10-09. Service bulletin. EQUIPMENT. CONNECTEDDRIVE/BMW ASSIST SYSTEM DIAGNOSIS INFORMATION: ConnectedDrive/BMW Assist features are partially or completely inoperative.
B7204172018-10-09. Service bulletin. SEAT BELTS:FRONT:WARNING LIGHT/DEVICES. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED: Acoustic and visual warnings indicate that the front passenger seat is occupied and the seat belt is not fastened, when the seat is actually unoccupied.
B6513162018-10-09. Service bulletin. EQUIPMENT. COMPONENT PROTECTION ACTIVE. HEAD UNITS CANNOT BE SWAPPED BETWEEN VEHICLES FOR TESTING.: If either the head unit (NBT-EVO or ENTRY-NAV-EVO) or the Body Domain Controller (BDC) are swapped into a different vehicle they will cause the head unit to enter a locked mode once it recognizes a different VIN.
B6507092018-10-09. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:
B5203182018-10-09. Service bulletin. SEATS. MEMORY SEAT ADJUSTMENT IS LIMITED: After programming the vehicle with ISTA 4.10.2x, the adjustment range of the memory seat may restricted.
B1220182018-10-09. Service bulletin. ENGINE. SERVICE ACTION: PROGRAM CONTROL UNITS (DME): The check engine light is illuminated and the vehicle may run roughly
B8408182018-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. 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:
B8406162018-08-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE. BMW ONLINE NON-FUNCTIONAL: CHECK ICC-ID IN ACCOUNT: BMW Online/BMW ConnectedDrive not functional.
B6511172018-08-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION PRO (NBT EVO) MAP UPDATE NOT POSSIBLE, NAVIGATION DOES NOT START: Navigation system will not start at all or the: ÒNavigation system startsÓ message is permanently displayed; or
B6507092018-08-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:

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