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Service bulletins for the 2012 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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
B5108192024-02-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. The basic conditions for initializing the power windows are not met.
B6113052024-02-01. Service bulletin. ELECTRICAL SYSTEM. The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.
B6515232023-06-26. Service bulletin. ELECTRICAL SYSTEM. After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
SIB6624192022-08-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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. Note: Opening, closing and starting via the BMW Digital Key or the Digital Key Card are not affected.
SIB6513122022-07-05. Service bulletin. ELECTRICAL SYSTEM. The Headunit High (HU-H), also called NBT, began replacing the Car Information Computer (CIC) on certain MY2013 vehicles with option 609 (as of 7/2012 production). This uses map North America NEXT. The Headunit High 2 (HU-H2), also called NBT-EVO, superseded the NBT HU and was introduced in 3/2014. This uses map North America EVO. The Headunit High 4 (HU-H4, also called MGU21) superseded the MGU starting with certain MY2021 vehicles with option code 6U3 Live Cockpit Professional. This uses map North America JOY. The ENTRY Media/Navigation (HU-B) is the low line business version of the navigation system and was introduced in 3/2014. This uses map North America ROUTE. The ENTRY NAV EVO (HU-B2) replaced Entry Media/Navigation as the low-line business version and was introduced in certain MY2018 vehicles. This uses map North America WAY.
B8402212021-08-09. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM:SOFTWARE. The discontinuation of 3G cellular communication for Combox, TCB 3G and ATM 3G (Telematics ControlModule) can no longer be supported by the cellular network provider starting February 2022. The decision to phase out 3G network technology was made at the discretion of the respective cellular carriers and lies beyond the control of BMW. Due to the phase-out, BMW Assist and ConnectedDrive services will no longer be supported after this date.
B6507092020-08-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. NAVIGATION SYSTEM - REPORTING MISSING OR INCORRECT ROADMAP DATA: Do not replace parts and do not program the vehicle. Roads can change by up to 15% every year. To ensure the best navigation experience, we do everything in our power to create the best maps. Your reports help us to detect changes in your area and keep future versions of our maps as accurate as possible. Therefore, a road map error or missing data must be reported directly to the map supplier.
B8402142020-04-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. CONNECTEDDRIVE/BMW ASSIST SYSTEM DIAGNOSIS INFORMATION: This Service Information Bulletin (Revision 7) replaces SI B84 02 14 dated May 2019. 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. 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.
6135122019-07-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Radio and Air Conditioning Functions Inoperative, When Vehicle is Moving. All audio and heating/air conditioning functions cannot be controlled when the vehicle is moving. After the vehicle is turned off and has entered sleep mode (after approximately 30 minutes), the system operates normally. CAUSE: Software error in the audio and air conditioning control panel.
B1219192019-06-24. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Service Information May 2019 Engine Electrical Systems B12 19 19 Technical Service. On the affected vehicles a DME software error prevents the Check Control Message (CCM) "Low Engine Oil Level" to be displayed in instrument cluster (Kombi) when the engine oil level drops below the minimum level.
B6211182019-02-25. Service bulletin. ELECTRICAL SYSTEM. BLACK SPOT IN THE CENTRAL INFORMATION. This Service Information bulletin replaces SI B62 11 18 dated January 2019. Whats New: â?¢ Warranty section - Programming information added. A small black spot remains on the Central Information Displays (CID) illuminated screen which does not go away after a key cycle or sleep mode.
B8407152018-12-10. Service bulletin. ELECTRICAL SYSTEM. SOS Malfunction Is Displayed In Kombi Sporadically. After engine start-up, a CCM (Check Control Message) for SOS malfunction is displayed in the Kombi and in the CID (Central Information Display). One or more of the fault codes below may be stored in the TCB or Combox control unit: 0xB7F32B - GSM Antenna: Open Circuit 0xB7F31F - GSM Antenna: Short to ground 0xB7F31E - GSM Antenna: Open Circuit A signal error is identified during the aerial self-test performed by the TCB (Telematic Control Box or the Combox).
B8407152018-12-10. Service bulletin. ELECTRICAL SYSTEM. SOS Malfunction Is Displayed In Kombi Sporadically. After engine start-up, a CCM (Check Control Message) for SOS malfunction is displayed in the Kombi and in the CID (Central Information Display). One or more of the fault codes below may be stored in the TCB or Combox control unit: 0xB7F32B - GSM Antenna: Open Circuit 0xB7F31F - GSM Antenna: Short to ground 0xB7F31E - GSM Antenna: Open Circuit A signal error is identified during the aerial self-test performed by the TCB (Telematic Control Box or the Combox).
B6513162018-12-10. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. "NBT-EVO Head Unit Cannot Be Swapped Between Vehicles for Testing. If an NBT-EVO head unit is swapped into a different vehicle it will enter a locked mode once it recognizes a different VIN. This will require REPLACEMENT of the head unit to restore operation. To prevent easy re-use of stolen Head units additional features are introduced with 11/15 ISTA/P software to bring NBT-EVO to a higher security level. In NBT-EVO the mechanism is called ""Trusted VIN"""
B6507162018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NBT and Entry Head Unit Software Update for Improved Satellite Radio Reception. Poor Satellite Radio reception CAUSE After this software update there is a slight improvement in Satellite Radio reception for these vehicles when receiving their signal from XM Satellites. This is due to the changeover from Sirius Satellite broadcasting to XM Satellite broadcasting in 2016 (See SI B65 19 15).
B6506162018-12-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. NBT Head Unit Aborts Import of CD. While importing a CD to the internal music collection of an NBT head unit the process aborts. You will see 'import error' on the radio display when this occurs. NBT Head Unit software
B8407152018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SUBJECT SOS Malfunction Is Displayed In Kombi Sporadically. After engine start-up, a CCM (Check Control Message) for SOS malfunction is displayed in the Kombi and in the CID (Central Information Display). One or more of the fault codes below may be stored in the TCB or Combox control unit: 0xB7F32B - GSM Antenna: Open Circuit 0xB7F31F - GSM Antenna: Short to ground 0xB7F31E - GSM Antenna: Open Circuit A signal error is identified during the aerial self-test performed by the TCB (Telematic Control Box or the Combox).
B8403142018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SI B84 03 14 February 2016 Communication Systems Technical Service This Service Information bulletin supersedes SI B84 03 14 dated October 2014. SUBJECT Bluetooth Connection Failures. There are various connectivity failures with the following devices: Apple iPhones Samsung S6 and the S6 Edge. Connectivity failure examples are: Call disconnection - Call is transferred back to the handset. In some instances the call is then transferred back to the vehicle. Contact List incomplete General connection failures CAUSE Apple iOS software (issue started with iOS 8.3 continues with iOS 9.x and its variants) Samsung S6 and S6 Edge device firmware CORRECTOPM None available at this time. We are currently working with the device manufacturer on a solution.
B6502162018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SUBJECT Audio System Speaker Testing. For audio system speaker testing there is a NED (Non Electrical Diagnosis) Test Plan available. CAUSE We previously recommended use of the Audio Test CD (ATC) from BMW. This CD has been discontinued.
B6103142018-12-10. Service bulletin. ELECTRICAL SYSTEM. February 2016 General Electrical Systems Technical Service This Service Information bulletin supersedes SI B61 03 14 dated May 2015. SUBJECT Check Control Messages Related to Battery Charge during Cold Ambient Temperatures. On cold days (an outside ambient temperature below 15F), customers may notice a check control message related to the battery displayed on the instrument cluster and the control information display. The check control message (ID 229) is caused by a heavily discharged battery. The check control message is triggered when the current state of charge (SoC) of the battery approaches the minimum SoC that is required to start the vehicle (start capability limit).
B5101162018-12-10. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. "Heated rear window control module requires a software update. The electrical load of the heated rear window may cause the fuse to overheat and fail. AFFECTED VEHICLES Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader."
B8407162018-12-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:SOFTWARE. ?After programming with ISTA/P 3.55.0 or a more recent version, the customer can no longer send ?Edit start time? signal for climate control system can only send an ?Activate now? signal for climate control system.
3401122018-12-03. Service bulletin. ELECTRICAL SYSTEM. Service Action: Replace Integrated Chassis Control Module (ICM). Due to a hardware fault in the ICM control module, an error code may be stored during engine start. If this condition were to occur, the airbag warning lamp would illuminate and be accompanied by a Check Control Message and acoustic warning.
6305132018-12-03. Service bulletin. ELECTRICAL SYSTEM. "FRM3 Will Not Communicate with ISTA. When diagnosing the vehicle with ISTA, the FRM3 (Footwell Module) is shown as not responding in the vehicle test. The customer may report one or more of the following malfunctions: 1. Light operation * CCM (Check Control Message) ""Display failure"" * Lighting INOP * Turn signal lights INOP * Break lights INOP * License plate light INOP * Courtesy lights INOP * Instrument cluster w/o light 2. Windows * One or both front windows INOP 3. LIN components https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/15625.1.B630513... 8/29/2013 Page 2 of 2 * CCM ""no blind spot detection"" if equipped * Power mirrors INOP * Seat adjustment INOP 4. Hardware inputs * Door locks INOP * Gear shifts automatically to P * Gear shift lever cannot be moved out of P 5. Electrical steering column adjustment * ELSV (Electric Steering Column Adjustment) INOP CAUSE Various causes include the following: * Blown fuse * Faulty wiring * Faulty component"
6122132018-12-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. """Increased battery discharge!"" CC Message upon Startup. CAUSE A software error in the Intelligent Battery Sensor causes an incorrect State of Charge (SoC) to be stored in the DME. The power management system then interprets this as a heavily discharged battery and informs the customer via a CC message. In reality, the battery does not have a problem."

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