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Service bulletins for the 2012 BMW 335i

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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
B2402152018-11-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. 8HP: TRANSMISSION FLUID LOSS FROM COOLER LINES CONNECTIONS. There is a transmission fluid leak in the area around the oil cooler lines (on the transmission side). CAUSE Damaged O-rings due to unfavorable cooling line connection tolerances
B1117162018-11-05. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS RECALL CAMPAIGN 16E-A05 - N26 ENGINE: REPLACE TURBOCHARGER OIL SUPPLY LINE. Carbonization of the turbocharger sealing ring can cause the exhaust to smoke briefly during cold start up.
B6128172018-11-05. Service bulletin. ENGINE AND ENGINE COOLING. "SME FAULT CODE 21F04B. One or several of the following check control messages (CCM) may be displayed: ""Engine fault! Power loss"" (CCM-ID: 29) ""Powertrain malfunction!"" (CCM-ID: 633) ""Hybrid system malfunctioning!"" (CCM-ID: 585) Note: The fault code 21F04B stated below may also be entered without any of the above mentioned CC messages being displayed A timing problem between the SME and the cell supervision circuit (CSC)."
B0108172018-11-05. Service bulletin. ENGINE. "INTAKE CHARGE-AIR DUCT: LIMITED WARRANTY EXTENSION TO 10 YEARS/120,000 MILES. For the eligible vehicles, BMW of North America, LLC (""BMW NA"") is extending the limited warranty for the engine's intake charge-air duct to: 10 years/120,000 miles as determined by the vehicle's original in-service date Item #1: This ""component-specific"" limited warranty extension applies to defects in materials or workmanship This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Item # 2: The pressure sensor, only in conjunction with a required replacement of the of the intake charge-air duct. Note: This bulletin is notice of a ""limited warranty extension."" This is NOT a notice of a Recall or Service Action. There is no immediate repair required unless the BMW vehicle is currently experiencing this problem. Customer Notification Letter - VIN and Component-specific Warranty Extension Even though this is NOT a Recall, BMW NA sent VIN-specific customer notification letters release."
B1122162018-11-05. Service bulletin. ENGINE AND ENGINE COOLING. ?"ENGINE OIL PRESSURE" ON LOW MILEAGE CARS. Check Control Message (CCM-212) states: "Engine Oil Pressure. Stop Carefully" The following codes may be stored in the DME fault memory" 1C2002 - Engine oil pump, pressure too low 1FB801 - CCM (ID212) - Oil pressure Also, the vehicle's mileage is very low (below 60 miles), the fault frequency shows only "one" occurrence; faults are not currently present and cannot be reproduced. CAUSE Unfavorable DME software application."
B1303152018-11-05. Service bulletin. ENGINE AND ENGINE COOLING. N20, N26, N55, N63TU, S63TU and S55 Engines: Bosch Injector ETK Part Number Error What's New: ? Procedure change: indentifying injector type using an ISTA test plan. . 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.
B1110152018-11-05. Service bulletin. ENGINE AND ENGINE COOLING. ?Service Action: Replace the Thermostat What's New: ? Part number and quantity of coolant has been updated. Refer to the Warranty section for details. . The Service Engine Soon light is on with corresponding fault codes in the DME for the engine thermostat.
B1803102018-11-05. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. "? NO REGENERATION OF THE DIESEL PARTICULATE FILTER (DPF) This Service Information bulletin supersedes SI B18 03 10 dated November 2010. . The Service Engine Soon lamp is illuminated. The following fault codes may be stored in the DDE: N47T/N57T engine 245700 - Particle filter system: particulate filter highly loaded (Exhaust backpressure high) 245800 - particle filter system - filter is heavily contaminated. (exhaust backpressure is above maximum) M57Y engine 480A Particle filter system - filter is heavily contaminated. (exhaust backpressure is too high) 481A Particle filter system - filter is heavily contaminated. (exhaust backpressure is above maximum) CAUSE 1. Faults with the exhaust system that affect the monitoring of the DPF by the DDE 2. Unfavorable recent driving profile INFORMATIOM During normal driving, there is a continuous regeneration of the diesel particulate filter that takes place at exhaust-gas temperatures between 280 and 350°C (slower oxidation process). The soot particles can only be burned off when the required exhaust-gas temperature has been reached. Under certain driving conditions (i.e., prolonged short trips or an exhaust system which never reaches soot burn-off temperatures), the DPF can become restricted. The DDE will initiate periodic regeneration automatically, at the latest after 600 miles. In vehicles making many short distance journeys, periodic regeneration takes place after only 250-500 miles. The Digital Diesel Electronics control unit evaluates the time for periodic regeneration from the following values: average distance driven average driving speed temperature in the diesel particulate filter values from the exhaust pressure sensor The DDE initiates the regeneration process by decreasing incoming air by the throttle valve, and one or two post injections are executed. This heats the exhaust-gas temperature to approx. 600° C . When the exhaust temp reaches this point: The soot is burned off with the residual oxygen. The
B1801172018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE. "? DIESEL PARTICULATE FILTER (DPF) CLEANING . The following performance issues may be noticed by the customer: CC-Message ""Drive faulty"" Engine jerking or a lack of power over the whole engine speed range Malfunction indicator lamp (MIL) is illuminated The following fault codes may be stored in the DDE: N47T/N57T engine Main Faults: 245700 - Particle filter system: particulate filter highly loaded (Exhaust backpressure high) 258300 - Exhaust backpressure sensor, Signal: Signal too high Secondary Faults: 244C00 - Charging pressure control, control deviation: charging pressure too low/positive deviation 25DA00 - Exhaust gas difference pressure sensor particle filter, Signal: short circuit to plus pole M57Y engine Main Faults: 480A particle filter system 481A particle filter system Secondary Faults: 4530 charging pressure control, control deviation 429A charging pressure control low pressure stage, control deviation Clogged DPF."
B1117162018-11-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. ?VOLUNTARY EMISSIONS RECALL CAMPAIGN 16E-A05 - N26 ENGINE: REPLACE TURBOCHARGER OIL SUPPLY LINE . Carbonization of the turbocharger sealing ring can cause the exhaust to smoke briefly during cold start up.
B1103172018-11-05. Service bulletin. ENGINE. ?N20 AND N26 ENGINE: HIGH PITCHED WHINING NOISE FROM LOWER ENGINE AREA . Whining noise from the lower engine area near the engine oil pump that increases frequency when increasing the engine RPM. Wear on the engine oil pump chain drive sprockets.
B1204182018-10-09. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. BUZZING NOISE FROM VALVETRONIC MOTOR BEFORE OR AFTER ENGINE OPERATION: Buzzing noise may be heard from the Valvetronic motor when the vehicle is unlocked, before the engine is started, or after the engine is turned off.
B1101152018-04-23. Service bulletin. ENGINE. Engine Oil Quick Reference Chart and Drain Plug Torque: The current version of ISTA/D has an error in the engine oil capacity specification for all vehicles with the N63R engine and xDrive.
B0110142018-04-23. Service bulletin. ENGINE. ENGINE CAMSHAFT (VANOS) ADJUSTMENT UNITS: BMW of North America, LLC (ÒBMW NAÓ) is extending the limited warranty for the Camshaft (VANOS) Adjustment Units on certain model BMW vehicles equipped with the non-turbocharged 6-cylinder engine
11 10 122016-01-06. Service bulletin. ENGINE. WHEN ACCELERATING, IN HOT AMBIENT TEMPERATURES, BETWEEN 3,000 RPM AND 5,000 RPM, CAUSES JUDDERS OR SURGES IN VEHICLE, REPEATEDLY, DUE TO THE ELECTROPNEUMATIC PRESSURE CONVERTOR. *MA
SIB-12-33-142015-09-26. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. BMW: DUE TO TRANSMISSION OIL HEAT EXCHANGER'S FAULTY THERMOSTAT OR ENGINE FAULTY CHARACTERISTIC MAP THERMOSTAT, ENGINE COOLANT FAILS TO REACH OPERATING TEMPERATURE, WITH LOW HEAT OUTPUT AND SERVICE ENGINE SOON LIGHT COMES ON. NO MODEL YEARS LISTED. *PE
SIB-12-21-142015-09-25. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; ENGINE; ELECTRICAL SYSTEM:SOFTWARE. BMW: FUEL GAUGE FAILS TO SHOW CORRECT LEVEL OF FUEL WHEN FILLING FUEL TANK BUT WOULD UPDATE ITSELF AFTER DRIVING AWHILE AND ILLUMINATION OF ENGINE MALFUNCTION LAMP (MIL) COMES ON, DUE TO SOFTWARE ERROR IN INSTRUMENT CLUSTER. MODEL 2011-15. *PE
SIB-16-16-142015-06-06. Service bulletin. ENGINE. BMW: SELECTIVE CATALYST REDUCTION MODULE (SCR) HAS A STORED FAULT, PRESSURE BUILD UP IS LOW, CAUSING SERVICE ENGINE SOON LIGHT TO ILLUMINATE. *
SIB-16-15-142015-05-20. Service bulletin. ENGINE. BMW: MALFUNCTION WARNING LIGHT FOR ENGINE IS ILLUMINATED DUE TO PURGE AIR SYSTEM MICRO LEAKAGE AND VENTILATION OF FUEL TANK FROM CONTAMINATION. *PE
SIB-11-14-142015-05-20. Service bulletin. ENGINE. BMW: DUE TO DEBRIS ENTERING OIL PASSAGE OF ENGINE, IT WILL KNOCK AND LOSE POWER, DURING CYLINDER HEAD MATING SURFACES AND CLEANING OF ENGINE BLOCK AFTER REPAIR TO ENGINE. *PE
SIB-12-19-132014-02-12. Service bulletin. ELECTRICAL SYSTEM; ENGINE. BMW: AN ERRONEOUS MESSAGE, FROM OIL LEVEL SENSOR, INDICATING OIL SERVICE IS DUE, AFTER TRAVELING A SHORT DISTANCE. MODEL F15, F13, F12, F10, F07, F06, F02, F01. NO YEARS LISTED. *PE
SIB-12-18-122013-01-18. Service bulletin. ELECTRICAL SYSTEM; ENGINE. BMW: IF BSD COMMUNICATION IS DISRUPTED, OIL LEVEL SENSOR DATA IS NO LONGER RECEIVED BY DME. BSD COMMUNICATION FAULT(S), AFTER REPAIRS ARE SHORTLY SET, REQUIRES REMOVAL OF IGNITION HARNESS FROM CYLINDER HEAD COVER. ALL MODELS. NO MODEL YEARS LISTED. *PE
SB-12142013-01-16. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. BMW: VEHICLES NEEDS DIAGNOSING FOR N63 MISFIRE FAULTS WHEN SERVICE ENGINE SOON LAMP IS ILLUMINATED. LACK OF DIAGNOSING ENGINE OR FUEL SYSTEM COULD CAUSE INCORRECT DIAGNOSIS AND REPEATED REPAIR ATTEMPTS. NO MODELS OR MODEL YEARS LISTED. *PE
SIB-12-14-122012-08-27. Service bulletin. ENGINE. BMW: EXPERIENCING LOSS OF ENGINE POWER, SERVICE ENGINE SOON LAMP IS ILLUMINATED, A NOISE, LIKE RATTLING, COMING FROM ENGINE COMPARTMENT. *PE UPDATED 10/31/12. *PE MODELS 2010 E70, 71, 82, 88, 90, 92, 93, F07, 10, 12, 13, 25. UPDATED 1/18/13. *PE UPDATED 4/18/2013. *KB UPDATED 05/13/2013 *JS UPDATED 5/19/15. *PE
SIB-12-16-112011-09-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. BMW: SERVICE ENGINE SOON LIGHT IS ON AND THE ENGINE HAS REDUCED POWER WITH TROUBLE CODES STORED. *RM UPDATED ON 4/24/2013. *KB

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