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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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Bulletins, newest first
6206132018-12-03. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Condition Based Service Due Date Is Reset to 01/2000. The Condition Based Service (CBS) due date is reset to 01/2000 and cannot be updated for: * Oil Service * Check Vehicle Note: No fault code is stored Software error in the Instrument Cluster
6113132018-12-03. Service bulletin. ELECTRICAL SYSTEM. "Service Action: Program Control Units (CAS). The Car Access System (CAS) was incorrectly coded with ISTA/P 2.49.2 or earlier, causing the anti-theft alarm system panic button on the remote control to stop functioning. AFFECTED VEHICLES This Service Action involves F12 vehicles which were produced from August 2010 to June 2012. In order to determine whether a specific vehicle has had this Service Action completed or is affected by this Service Action, first check the B-pillar label for code number 648. If code number 648 has been punched out, the campaign has already been performed. If code number 648 has not been punched out, it will be necessary to utilize the ""Service Menu"" of DCSnet (Dealer Communication System) or the Key Reader. Based on the response of the system, either proceed with the corrective action or take no further action. Important Note: A Campaign can be reserved in ISPA Light as ""Pending"" prior to submission of a claim. If you find this Campaign reserved, please verify the reason before attempting to perform this repair."
5111132018-12-03. Service bulletin. VISIBILITY; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Rattling Noise from Windshield Defroster Vents. Rattling noises can be heard from the instrument panel where the defroster vents are located.
5108132018-12-03. Service bulletin. STRUCTURE. Water Leaking into Trunk. Water leaks into the trunk on the left or right side. CAUSE The trunk lid hinge bracket fastener is not sealed to the body properly.
3201132018-12-03. Service bulletin. STEERING. Squeaking Noises when Steering Wheel Is Turned. There are squeaking noises from the steering spindle when the steering wheel is turned. The steering spindle sleeve's plastic bearing is insufficiently lubricated or not lubricated at all.
2702132018-12-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Knocking Noise from Driveline During Low-speed Turning. A cracking or knocking noise is heard from the driveline on sharp turns at low driving speeds (<15 mph). CAUSE Software calibration error in the transfer case control unit (Longitudinal Torque Module or LMV)
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.
1204122018-12-03. Service bulletin. ENGINE. N55: Idle Fluctuates Briefly After a Cold Engine Start. Under certain engine cold starts, the engine idle may fluctuate during the first 10-20 seconds of operation before becoming stable. No faults will be stored in this situation, which will usually only occur at specific engine temperatures, making it difficult to reproduce in the workshop. Unfavorable DME software calibration
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.
B1108152018-12-03. Service bulletin. ENGINE. N63 and S63 Engine: Valve Seal Replacement. Refer to the following applicable SIBs before replacing the valve seals. * B11 07 11 - Turbocharger Failure: Oil Supply and Return Line Blockage and Proper Repair * B11 07 12 - N63 Engine: Oil Consumption and/or Rough Running Complaints * B11 01 13 - N63 Engine: Engine Oil Consumption, Engine Oil Top-ups and Refill Capacity * B11 03 13 - Engine Oil Consumption (all models) If the valve seals are leaking, one of the following will help determine if the seals should be replaced. * Smoke from the tailpipe when starting or aggressively accelerating and decelerating the engine in addition to excessive engine oil consumption * Spark plugs fouled with engine oil and excessive engine oil consumption * Excessive engine oil consumption All Vehicles: On vehicles, where an excessive oil consumption between services is the only complaint, a complete oil consumption test as described in SI B11 03 13, must be performed first before replacing the valve seals. On vehicles exhibiting reproducible smoking from the tailpipe when hot, additional engine diagnostic steps (e.g. engine compression test, leak-down tests; inspection of the crankcase ventilation lines and turbo intake/outlet tubes for excessive oil accumulation) should be performed and documented prior to replacement of the valve seals, in order to eliminate other possible causes. Refer to the SIBs listed above for important diagnostic tips. Do not remove the intake manifolds to clean the intake valve carbon.
8406132018-11-26. Service bulletin. EQUIPMENT. iPhone Charging Status Constantly Switches On and Off. Do not replace any other parts! Advise the customer that he/she must use one of the following: * The original Apple iPhone/iPOD USB cable that came with the device * A BMW supplied iPhone/iPOD USB adapter cable PARTS INFORMATION Part Number
8405132018-11-26. Service bulletin. ELECTRICAL SYSTEM. TCB: Emergency Call Is Erroneously Triggered. An emergency call is erroneously made with no input from the driver. The following fault codes are stored in the TCB: * 0xB7F325 - Emergency call loud speaker: break in circuit * 0xB7F319 - Emergency call button: short circuit * 0xB7F326 - Emergency call loud speaker: short circuit to earth * 0xB7F33E - Automatic emergency call triggered frequently CAUSE TCB control unit error
6603132018-11-26. Service bulletin. ELECTRICAL SYSTEM. Parking Assistant Inoperative After Programming. The parking assistant system does not function correctly. One or more of the following scenarios may occur: * Unable to activate the parking assistant via the iDrive * When activated, the vehicle does not locate a parking spot * Does not assist with parking the vehicle CAUSE Software error in ISTA/P 2.49.0 programming data
6138122018-11-26. Service bulletin. ELECTRICAL SYSTEM. "Service Action: Program Control Units (CAS). After programming/coding the vehicle with ISTA/P 2.48.1 or earlier, the Car Access System (CAS) was incorrectly coded. This causes the anti-theft alarm system panic button on the remote control to not function. In order to determine whether a specific vehicle has had this Service Action completed or is affected by this Service Action, first check the B-pillar label for code number 637. If code number 637 has been punched out, the campaign has already been performed. If code number 637 has not been punched out, it will be necessary to utilize the ""Service Menu"" of DCSnet (Dealer Communication System) or the Key Reader. Based on the response of the system, either proceed with the corrective action or take no further action. Important Note: A campaign can be reserved in ISPA Light as ""Pending"" prior to submission of a claim. If you find this campaign reserved, please verify the reason before attempting to perform this repair."
5204132018-11-26. Service bulletin. SEATS. Front Seat Has Side-to-Side Play and Can Make Noises When Cornering. 4.Remove the front seat outer cover panel by pulling the trim forward from the retaining clips. The front seat (driver or/and passenger) has play to the left and right, and can make noises when cornering. CAUSE The front seat base cushion shell is deformed at the cross tube of the tilt adjustment.
5110132018-11-26. Service bulletin. EQUIPMENT. Center Console Makes Clicking Noises. The driver's or passenger's side of the center console may make a creaking noise when lateral force is applied, such as pressure from a leg or knee. CAUSE The center console side panel securing clips are rubbing against each other and/or on the center console support.
5108132018-11-26. Service bulletin. LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK. Water Leaking into Trunk. Water leaks into the trunk on the left or right side. CAUSE The trunk lid hinge bracket fastener is not sealed to the body properly.
3402132018-11-26. Service bulletin. SERVICE BRAKES, HYDRAULIC. Incorrect Remaining Service Life from CBS Data for Brake Pads. The calculated remaining service life for the brake pads (front and/or rear axle) from the CBS data does not match the actual brake pad thickness. The customer notices implausible remaining distances (too high or too low) on the front and/or the rear axle brake system. Software calculation of the brake pad wear model
1307122018-11-26. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. N63 and S63 Engine: High-pressure Fuel Injector Replacement Procedures. The customer complains that one of the following scenarios has been encountered while operating the vehicle: * During a cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. * During a hot start, the engine runs very roughly and the Service Engine Soon lamp is illuminated. ??While driving or idling, the engine will misfire and the Service Engine Soon lamp is illuminated. * Various misfire faults are stored in DME fault memory. CAUSE An internal failure of the high-pressure fuel injector can lead to incorrect operation.
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.
6513132018-11-26. Service bulletin. EQUIPMENT:ELECTRICAL; 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. ??Fault Code B7F8C3 ""no response from CID (HW error: loss of CID communication)"" is stored in the HU-H Hardware error in the Headunit-High"
6401132018-11-26. Service bulletin. EQUIPMENT. MRed or Blue Cap Missing from Temperature Control Wheel. The customer states the red or blue cap is missing from the temperature control wheel of the heat and air conditioning control panel.
M5201132018-11-26. Service bulletin. SEATS. Front Seat Lumbar Support Not Working. The lumbar support does not function properly or at all for one or both front seats. CAUSE In most cases, the lumbar knob will rotate with limited or no movement of the lumbar support; this is due to a fractured or broken lumbar support.

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