WenmarOpen by Wenmar Pro

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.

By type

By component

By trouble code

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

Bulletins, newest first
B0120162025-02-24. Warranty extension. ELECTRICAL SYSTEM. The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship has been supplementarily increased to 15 years / 240,000 miles as determined from the original first in-service / delivery date.
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.
B8408222023-05-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE (VoLTE) function. For this purpose, the SIM card must perform an IMS registration in the mobile communication network. Due to a production error, the telematics control units were delivered without an IMS configuration. The Connected Drive voice services (Concierge Call, BMW Assistance, and emergency call voice) can no longer be used regionally in the US in vehicle with telematics control units ATM-1 and TCB-4G. Voice control of the vehicle and all other telephone (paired mobile devices) functions are not affected. Emergency call location data is unaffected.
B6309172023-05-01. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Exterior rear lights do not work.
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.
B6103222022-05-16. Service bulletin. ELECTRICAL SYSTEM. The footwell module (FRM) cannot be encoded after replacement.
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.
B6406132021-02-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT; ELECTRICAL SYSTEM. ?A/C COOLING INTERMITTENT REDUCTION OF AIR FLOW: Customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than 30 minutes. The evaporator starts to freeze up.
B6118202020-10-19. Service bulletin. ELECTRICAL SYSTEM. BMW TURBOCORD PORTABLE EV 120 V/240 V CHARGER: The BMW-approved accessory TurboCord electric vehicle (EV) charger will not charge the vehicle.
B1222192020-09-14. Service bulletin. ELECTRICAL SYSTEM. EME GROUND CONNECTION MONITORING FAULTS: Check Control message (CCM ID 794): "Drive. Check as soon as possible" illuminates. Increased ground cable contact resistance at Electrical Machine Electronics (EME) due to corrosion/oxidation.
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.
B6104192020-08-31. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED: The customer's vehicle does not start due to a totally discharged battery.
B6104192020-07-27. Service bulletin. ELECTRICAL SYSTEM. VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED: The customer's vehicle does not start due to a totally discharged battery.
B6105202020-06-15. Service bulletin. ELECTRICAL SYSTEM. CCM DISPLAYED "INCREASED BATTERY DRAIN" CAUSED BY CONTROLLER: A yellow CCM (Check Control Message) ID 415 is displayed- "Increased battery drain! // Battery. Electrostatic discharge at standstill / start engine. Energy management" The results of the Energy Diagnosis test plan identifies the Controller as the root cause of the CCM. The Controller delays the vehicle going to sleep by up to 6 minutes. In some cases this will cause the CCM 415 to be displayed when starting the vehicle. Replacing the Controller in this case will not correct this situation.
B1102082020-05-18. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Power Reduction FC2A82 Intake VANOS and/or FC2 A87 Exhaust VANOS Camshaft Fault: The "Service Engine Soon" (MIL) lamp is illuminated and engine power reduction is perceived. This situation can occur after driving for some time with the engine at full operating temperature. If the ignition is cycled the engine then usually performs normally.
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.
B8404162020-02-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. SOS MALFUNCTION DISPLAYED This Service Information Bulletin (Revision 1) replaces SI B84 04 16 dated September 2016. One or all the following may be experienced in the vehicle: An SOS malfunction is seen in the Kombi (aka instrument cluster) When pressing the E-Call/SOS button in the overhead console nothing happens Fault code B7F33C (internal ECU error) is stored in the Telematics control unit (ATM/TCB2) There are 2 known causes for this failure. They are as follows: Software file missing from the ATM/TCB2 control module Water leak at the "shark fin" roof antenna (aka roof aerial) leading to corrosion in the ATM/TCB2 control module.
B1203192020-01-21. Service bulletin. ELECTRICAL SYSTEM. ENGINE DOES NOT START BELOW FREEZING TEMPERATURES: Engine designation correction Parts availability Warranty. The engine will not start at temperatures below freezing. The starter does not turn and engage.
6510122019-07-12. Service bulletin. ELECTRICAL SYSTEM. "Headunit-Basic: 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-B Error in the Headunit-Basic (HU-B), also called Radio Professional or ENTRY head unit."
Radio and Air Co2019-07-12. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER; LATCHES/LOCKS/LINKAGES; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK; ELECTRICAL SYSTEM; VISIBILITY/WIPER. "Service Action: Program Control Units (FEM). One or more of the following situations may occur when using the windshield wipers: * After the wipers are switched off, they do not remain in the park position, but in the middle of the windshield. * The wipers continue to operate even when the ignition is switched off. * The wipers only partially moved when switched on. * Hazard warning lights flash permanently. * Vehicle locks and unlocks on its own. * Interior lights turn on by themselves. * The trunk lid cannot be opened. AFFECTED VEHICLES This Service Action involves F30 which were produced October 2011 to August 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 631. If code number 631 has been punched out, the campaign has already been performed. If code number 631 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."
6133122019-07-11. Service bulletin. ELECTRICAL SYSTEM. "Erroneous CC Message "Remote control! Do not switch off the engine" is Displayed. An erroneous CC message, "Remote control!" " Do not switch off the engine" is displayed in the Central Information Display (CID). The engine can still be started, even with the CC message displayed. CAUSE: Car Access System (CAS) software error"
6132122019-07-11. Service bulletin. ELECTRICAL SYSTEM. "REM: Various Electrical Faults in Rear of a Vehicle. Various electrical faults associated with the rear of the vehicle occur, including one or more of the following: * The REM (Rear Electronic Module) does not respond to diagnosis. * The one-touch function of the rear power windows is inoperative. * The rear power windows cannot be initialized. * The trunk lid cannot be opened. * The brake lights are not working (check control message "Left/right brake light failed" is displayed). * The rear turn indicator lights are not working (check control message "Rear left/right turn indicator failed" is displayed). One or more of the following faults are stored in the REM: * "804805 Internal software control unit fault" * "804876 Turn indicator, rear left, faulty" * "804877 Turn indicator, rear right, faulty" * "804872 Brake light, left, faulty" * "804874 Brake light, right, faulty" * "30195 Window regulator, passenger's side door, rear: invalid characteristic curve, no normalization present" * "30115 Power window, rear door on driver's side: invalid characteristic curve, no normalization present" *""301A0 Window regulator on passenger's side door, rear: system is not normalized" * "30120 Power window, rear door on driver's side: system is not standardized" CAUSE: Rear power window drive(s) faulty"
5136082019-07-10. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR; ELECTRICAL SYSTEM. "Outside Door Mirror Moves when Locking or Unlocking the Vehicle. The door mirror tilts immediately after unlocking or locking. The mirror position does not correspond to the memory position preset by the customer. Pressing the seat memory button typically will return the mirror to the stored position. Poor electrical contacts of the mirror drive in the mirror housing INFORMATION The problem has been integrated into ISTA diagnostics. Follow the diagnosis test plan using the latest ISTA version. In Information Search, select the "Function Structure"" tab. Select Body, Mirror, Door mirror, Driver's or passenger side, Exterior Mirror Malfunction, and then press "Start Search". Select test plan ""AM5102_00010".

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