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Service bulletins for the 2015 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.

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

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Bulletins, newest first
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
B6403162018-12-10. Service bulletin. EQUIPMENT. "Air Conditioning Refrigerant R1234yf Introduction. Highlights of R-1234yf Meets SAE J2888_201301 ""This SAE Standard covers fittings, couplers, and hoses intended for connecting service hoses from mobile air- conditioning Systems to service equipment such as charging, recovery and recycling equipment"" New tools and equipment are required. To service vehicles equipped with R-1234yf refer to SI B04 02 16. Air conditioning technician certification is required to work on system. Refer to your State Law. Unique low and high side fittings. Revised evaporator core as per SAE J2842. System will use about 5% more refrigerant than a comparable R134a system. System oil is a specific PAG oil. Refer to ISTA repair recommendation. Do not interchange components between systems using other refrigerants. Do not reuse Seals / O-ring material from another system. The system piping has internal heat exchangers (IHX or IWT) as introduced in the G12 (7 series). SAFETY INFORMATION Several precautions need to be observed when working on automotive air conditioning systems: Always wear eye protection and gloves while handling refrigerant or servicing air conditioning system. Avoid breathing R1234yf lubricant vapor or mist. Use only approved service equipment to discharge A/C systems. If refrigerant or compressor oil contacts the skin or eyes, large quantities of cool water should be used to flush the affected area. Never heat a refrigerant container with an open flame. Keep all refrigerant away from open flames. Under no circumstances should R1234yf service equipment or vehicle A/C systems be pressure tested or leak tested with air/R1234yf mixtures. NOTE: The use of compressed air (shop air) for leak detection in an R1234yf system can contaminate the system and/or refrigerant with moisture. Leak detection equipment that meets the SAE J2791 standard will work with R1234yf Never use fittings for an R12 or R134a system on an R1234yf system. Any difficulty in connecting service equipm
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).
B5143152018-12-10. Service bulletin. EQUIPMENT. SUBJECT A Groaning Noise from the Rear Center Console Is Heard. A groaning noise is heard from the center console area. The noise can be reproduced by pressing against the center console. The support ribs of the rear passenger compartment air conditioning control panel rub against the left and right center console trim causing a groaning noise.
B1303152018-12-10. Service bulletin. FUEL SYSTEM, GASOLINE; EQUIPMENT. SI B13 03 15 February 2016 Fuel Systems Technical Service This Service Information bulletin supersedes SI B13 03 15 dated March 2015 and replaces SI B13 04 13 dated March 2014. SUBJECT N20, N26, N55, N63TU, S63TU and S55 Engines: Bosch Injector ETK Part Number Error. The current version of the ETK incorporates multiple part number errors for the Bosch type injectors. Ordering the injectors by VIN number or manual identification in ETK may result in an incorrect part number.
B6513132018-12-10. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. "?This Service Information bulletin supersedes SI B65 13 13 dated October 2014. SUBJECT Headunit-High: CID Is Blank and ""NO SIGNAL"" Is Displayed . Intermittently the Central Information Display (CID) is blank and ""NO SIGNAL"" is displayed on the CID. Fault Code B7F8C3 ""no response from CID (HW error: loss of CID communication)"" is stored in the HU-H Note: If Fault Code E1C440 ""Headunit Reset"" is also stored in the HU-H, this Service Information is not effective! Follow relevant test plan using ISTA diagnosis. Software error in the HU-H."
B6507092018-12-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Whistling Noise Coming from the Center Vent - A/C is Off . A very high pitched whistling or beeping noise is heard coming from the center vents. The flow of refrigerant through the expansion valve at certain temperature differentials.
B6214152018-12-10. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM:SOFTWARE. Instrument Cluster Multifunction Display Intermittently Blank . Some information displays in the Instrument Cluster (KOMBI) may intermittently go blank. This may include the tachometer and speedometer displays. There is a software error in the KOMBI.
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."
B6216162018-12-10. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT. ?VERTICAL LINES IN HEAD-UP DISPLAY. Run diagnostics and if display is found to be damaged, replace Head-Up display.
B1615142018-12-10. Service bulletin. EQUIPMENT; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. SI B16 15 14 January 2016 Fuel Supply Systems Technical Service.This Service Information bulletin supersedes SI B16 15 14 dated December 2014, designates changes to this revision. SUBJECT NVLD Tank Leakage FC 190302 Fuel Tank Ventilation and Purge Air System Micro Leak . The engine malfunction warning is illuminated and the following fault code is stored in the DME memory: FC 190302 Fuel tank ventilation and purge air system micro leak leakage greater than 0_5 mm. CAUSE: Contamination of the NVLD pressure switch diaphragm and/or the contamination of the NVLD dust filter.
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.
B1111172018-12-03. Service bulletin. ENGINE. ?ENGINE LEAK DIAGNOSIS ON TURBOCHARGED V8 ENGINES. When diagnosing an engine oil leak or a coolant leak on turbocharged V8 engines it is necessary to use a borescope to identify if the source of the leak is from under the turbochargers. Engine oil or coolant leaking from the bell housing area or the front timing chain cover area may be caused by the turbocharger itself, a turbocharger oil/coolant feed line or turbocharger oil/coolant return line. Do not remove the transmission and do not dissemble the engine before performing this inspection. If necessary, use engine oil leakage detection dye.
B1101132018-11-26. Service bulletin. ENGINE. N63 AND N63T ENGINE: ENGINE OIL CONSUMPTION, ENGINE OIL TOP-UPS AND REFILL CAPACITY. Customers with one of the vehicles above may complain that the engine's oil consumption is "too high," resulting in engine oil top-ups and workshop visits to address the issue before the vehicle displays an engine oil service as being "due." When the vehicle's engine oil drops to the minimum level, a message will display in the vehicle advising the driver to "add 1 quart of engine oil." After topping up and continued operation, the "add engine oil" message may display again before an engine oil service is required and performed. CAUSE Engines that are fitted with a turbocharger, as part of their normal operation, will consume engine oil at a higher rate than a naturally aspirated engine (non-turbocharged engine). In this case, a "turbocharged" engine could require topping up of the engine oil more frequently.
B6130172018-11-26. Service bulletin. ELECTRICAL SYSTEM. RAIN/LIGHT SENSOR (RLS): OIL LEAKAGE FROM GEL PAD. ??Oil leaking from the Rain/Light Sensor (RLS). Note: This oil serves as a separation medium between the RLS mounting gel pad and the windscreen. The oil ensures damage free disassembly in case of repair. CAUSE The oil that serves as the separation medium of the Rain/Light Sensor (RLS) gel pad and the windscreen leaks out. Expose the Rain/Light Sensor (RLS) and properly clean the area of all oily residue. Note: The separating oil usually leaks only once from the pad at the RLS. Due to the small oil quantity in the gel pad, additional oil leakage is not plausible. Leaking oil does not impair the function of the RLS.
84030142018-11-26. Service bulletin. ELECTRICAL SYSTEM. iPhone: Connection Failures with iOS 7. There are various connectivity failures with the iPhone using iOS 7. Some examples are listed below: z Call disconnection z Contact List incomplete z General connection failures Apple software iOS 7 and its variants
6608142018-11-26. Service bulletin. BACK OVER PREVENTION. Side View Camera Does Not Display Picture. The side view camera does not display a picture: z After engaging reverse gear z Activating the side view camera via the switch on the center console near the gear shift CAUSE z Water (moisture) entering the cable assembly, causing corrosion on the pins in the connector(s) at the camera(s) z Poor cable connection to the camera(s)
6519142018-11-26. Service bulletin. BACK OVER PREVENTION. DWA Siren Malfunction. When the anti-theft alarm (DWA) is triggered, the horn comes on instead of the alarm siren. DWA internal monitoring is too sensitive.
6513132018-11-26. Service bulletin. ELECTRICAL SYSTEM. Headunit-High: CID Is Blank and "NO SIGNAL" Is Displayed. Intermittently the Central Information Display (CID) is blank and "NO SIGNAL" is displayed on the CID. z Fault Code B7F8C3 "no response from CID (HW error: loss of CID communication)" is stored in the HU-H Note: If Fault Code E1C440 "Headunit Reset" is also stored in the HU-H, this Service Information is not effective! Follow relevant test plan using ISTA diagnosis. Software error in the HU-H
6311142018-11-26. Service bulletin. EXTERIOR LIGHTING. LED Low Beam Flashes Briefly After Ignition Switched ON. 1. The low beam flashes briefly after the ignition is switched ON. This situation can be duplicated every time the vehicle is started. 2. One of the faults below is stored and currently present: 0xDA1411 - Signal (status of exterior light operation, 0x1AE) invalid, transmitter FRM / FEM / BDC 0xD9D411 - Signal (status of exterior light operation, 0x1AE) invalid, transmitter FRM / FEM / BDC Faulty LED main light module (LHM2)

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