WenmarOpen by Wenmar Pro

Service bulletins for the 2014 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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
B1116142022-05-16. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. This bulletin outlines the procedure for checking the engine timing chains for wear, and should be completed in conjunction with SI B11 06 14, "N63 Customer Care Package." The N63CCP and N63 Engine Check the Timing Chain are NOT mandatory Technical Campaigns or Recalls. They should be completed only based on parts availability, workshop capacity, and the customer's schedule.
B0113212021-07-19. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. CLASS ACTION SETTLEMENT: N54/N54T/N55 ELECTRIC ENGINE COOLANT PUMP . With the court's FINAL approval, BMW of North America, LLC (BMW NA) has entered a nationwide settlement with the plaintiffs in the following class action: Oliver, et al v. BMW NA, et al
B0113212021-07-06. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. CLASS ACTION SETTLEMENT: N54/N54T/N55 ELECTRIC ENGINE COOLANT PUMP . With the court's FINAL approval, BMW of North America, LLC (BMW NA) has entered a nationwide settlement with the plaintiffs in the following class action: Oliver, et al v. BMW NA, et al
B0105182020-03-16. Service bulletin. ENGINE. LIMITED WARRANTY EXTENSIONTO 10 YEARS/120000 MILES: This Service Information Bulletin replaces SI B01 05 18 dated July 2019. Engine starts poorly (hard starting) rough idle and misfires. The Service Engine Soon (MIL) lamp is on.
B1223192019-08-19. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; EQUIPMENT:ELECTRICAL. DIAGNOSTIC HINT: CATALYTIC CONVERTER INSPECTION AFTER LOSS OF CRANKSHAFT SIGNAL. In certain situations when the crankshaft position signal is lost while driving the malfunction indicator lamp (MIL) and an engine malfunction check control message (CCM #29) may be displayed. The engine may run roughly or with reduced power.
B1112162019-08-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. The crankcase ventilation hoses may become brittle and break when they come in contact with hot engine components. One or more of the crankcase ventilation hoses are not FPM (fluoroelastomer) rubber material. The FPM rubber material is engine heat resistant. Or The plastic corrugated hoses are not fitted with the self-locking spacers. The self-locking spacers maintain an air gap between the hoses and the hot engine components.
B1109192019-07-22. Service bulletin. ENGINE. N55 ENGINE: FC 28A0 OR 101F01 THROTTLE VALVE OPENING ANGLE. The engine malfunction warning is illuminated and one of the following fault codes are stored in the DME shortly after programming the vehicle or with a customer complaint.
B0121182019-07-22. Service bulletin. EQUIPMENT; ENGINE. N63 ENGINE: OIL CONSUMPTION CLASS ACTION SETTLEMENT DIAGNOSIS AND REPAIR PROCEDURES. While engine oil consumption may create a customer inconvenience in the short term it should not cause any drivability problems that would prevent normal day-to-day operational use of the vehicle.
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.
B6104192019-05-20. 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.
B0124182019-05-20. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. On the affected vehicles the CBS engine oil service interval has been reduced to 1 year/10000 miles to make these vehicles consistent with all other N63x engine equipped vehicles.
B0124182019-05-20. Service bulletin. ENGINE. On the affected vehicles the CBS engine oil service interval has been reduced to 1 year/10000 miles to make these vehicles consistent with all other N63x engine equipped vehicles.
B1205162018-12-10. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. "N55 - ENGINE MALFUNCTION WARNING DUE TO VAPOR FORMING IN THE FUEL SYSTEM This Service Information bulletin supersedes SI B12 05 16 dated April 2016. The Engine ""Drivetrain Malfunction"" Check Control warning is displayed and the Service Engine Soon (MIL) Lamp may also be on. In areas where winterized fuel is used, this situation may occur after prolonged periods of engine idling or ""stop and go"" driving. Additional symptoms that may be present: rough running poor engine performance difficulty in starting the engine. Either or both of the following fault codes can be stored in the DME. 11A002 - Fuel high pressure, plausibility: Pressure too low 11AC02 - Fuel high pressure, plausibility, cold start: Pressure too low In addition any of the following faults may also be stored: 119404 - Rail pressure sensor, signal: Permanently stuck 118001 - Mixture control: mixture too lean 118401 - Mixture control: mixture too lean; large deviation Vapor formation in the fuel system from fuel quality characteristics of certain winter fuel blends along with high engine compartment temperatures."
B1117152018-12-10. Service bulletin. ENGINE; EQUIPMENT. "N63, N63TU and N63R Engines: Upper Oil Pan Removal and Installation Repair Instructions This Service Information bulletin supersedes SI B11 17 15 dated August 2015.. INFORMATION When removing and/or installing the engine upper oil pan assembly, the oil pan can sustain damage if this operation is not performed correctly. Before loosening or tightening the engine upper oil pan refer to the newly released Repair Instruction 11 13 010 ""Removing and installing/replacing upper oil sump"" in ISTA/D 3.55.11 or higher for the proper procedures. IMPORTANT: The new repair instructions will state one of the following before reinstalling the upper engine oil pan. ""All threads must be cleaned with screw tap"" Or ""Clean all threads with screw tap. Order number 81 43 0 402 559"" Or ""Clean all threads with a thread cutter"". The current repair instruction terminology will be modified to include this information."
B1205162018-12-10. Service bulletin. ENGINE. "N55 - Engine Malfunction Warning Due to Vapor Forming in the Fuel System. The Engine Drivetrain Malfunction"" Check Control warning is displayed and the Service Engine Soon (MIL) Lamp may also be on. In areas where winterized fuel is used, this situation may occur after prolonged periods of engine idling or ""stop and go"" driving. Additional symptoms that may be present: rough running poor engine performance difficulty in starting the engine. Either or both of the following fault codes can be stored in the DME. 11A002 - Fuel high pressure, plausibility: Pressure too low 11AC02 - Fuel high pressure, plausibility, cold start: Pressure too low In addition any of the following faults may also be stored: 119404 - Rail pressure sensor, signal: Permanently stuck 118001 - Mixture control: mixture too lean 118401 - Mixture control: mixture too lean; large deviation Vapor formation in the fuel system from fuel quality characteristics of certain winter fuel blends along with high engine compartment temperatures."
1206132018-12-03. Service bulletin. ENGINE AND ENGINE COOLING. The Service Engine Soon Lamp On with Post Oxygen Sensor Faults Stored. The Service Engine Soon (MIL) lamp is on and the following faults are stored in the DME fault code memory. BN2000 (E-Series) vehicles: * 2D22: Oxygen sensor downstream of catalytic converter, electric: open circuit BN2020 (F-Series) vehicles: * 12AB04: Oxygen sensor downstream of catalytic converter, electric: open circuit * 12AC04: Oxygen sensor downstream of catalytic converter 2, electric: open circuit These faults may occur sporadically after a long MSA engine stop. Unfavorable DME software diagnostics (fault is erroneous) This software error affects vehicles produced from 3/2013 to 6/2013, as well as older vehicles which have been programmed during service work to a current integration level of Xxxx-13-03-5xx.
1217132018-12-03. Service bulletin. ENGINE; POWER TRAIN. N55: Engine Difficult to Start at Cold Ambient Temperatures. The complaint may include any of the following symptoms: * The engine stalls immediately after a cold start before driving away * The engine may run roughly or misfire after a cold start * The engine does not start cold or may take several attempts * To assist starting when cold, the accelerator may need to be depressed slightly and the idle speed raised for a few seconds so the engine does not stall This can occur most frequently at outside ambient temperatures between -15°C and + 15°C. It is possible that the Service Engine Soon (MIL) lamp is on with misfire fault(s) stored, but it is equally possible that there will be no faults stored in the DME. Unfavorable DME software Cold start or idling problems may arise due to poor fuel quality. The use of summer fuel during cold outside temperatures may also lead to such problems.
1201132018-12-03. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION. MN16 Engine: FC 2D9B Knock Sensor, Signal Is Stored in the DME. Certain areas of the US experience extremely cold climate conditions during the winter months, which can cause the Service Engine Soon lamp to illuminate while the engine temperature is increasing to full operating temperature. The following fault may be stored in the DME: ??FC 2D9B Knock Sensor, Signal CAUSE Unfavorable DME knock sensor diagnostic at outside ambient temperatures below -5° C
1307122018-12-03. 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.
1216112018-12-03. Service bulletin. ENGINE; POWER TRAIN. N55 Engine Failsafe - FC 120308 Boost Pressure Control, Plausibility: Pressure Too Low Stored in DME Fault Memory. INFORMATION The customer complains the SES is illuminated and the engine has reduced power (engine failsafe mode).
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.
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.
1205132018-11-26. Service bulletin. ENGINE. Service Engine Soon Light Flashes with Throttle Adaptation Faults Stored. The EML light flashes with a check control message for reduced power output and/or the Service Engine Soon lamp (MIL) flashes. During the throttle valve adaptation (teach-in limit run), faults may occur due to signal voltage oscillations. This could lead to a termination of the teach-in routine or an incorrect value taught in at the lower limit. The following faults can be stored in the DME memory: E82, E84, E88, E89, E92, and E93 BN2000 vehicles * 28D0: throttle valve, adaptation: Initial adaptation, lower limit not taught in * 28D4: throttle valve, adaptation: Subsequent teach-in, lower limit not taught in * 28C4: throttle valve, adaptation: Emergency air position not adapted * 28A0: throttle valve angle - Intake manifold absolute comparison: pressure too high ??3166: Tank-ventilation system: fault F01, F02, F06, F07, F10, F12, F13, F30, F31, and ALPINA B7 BN2020 vehicles: * 101408: throttle valve, adaptation: Initial adaptation, lower limit not taught in * 107AE0: throttle valve, adaptation: Subsequent teach-in, lower limit not taught in * 101402: throttle valve, adaptation: Emergency air position not adapted * 101F01: throttle valve angle - Intake manifold absolute comparison: pressure too high ??190F08: Tank-ventilation system: fault Sensitivity of the throttle valve sensor (only affects parts installed during this production period)
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.

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