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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: Electrical system are shown. Show all

Bulletins, newest first
B6513162018-12-10. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. "NBT-EVO Head Unit Cannot Be Swapped Between Vehicles for Testing. If an NBT-EVO head unit is swapped into a different vehicle it will enter a locked mode once it recognizes a different VIN. This will require REPLACEMENT of the head unit to restore operation. To prevent easy re-use of stolen Head units additional features are introduced with 11/15 ISTA/P software to bring NBT-EVO to a higher security level. In NBT-EVO the mechanism is called ""Trusted VIN"""
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
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.
B6501162018-12-10. Service bulletin. ELECTRICAL SYSTEM. SUBJECT Entry Head Unit Resets After Pairing a Bluetooth Phone. The Entry Head Unit may reset after pairing an Iphone or Android phone via Bluetooth to the vehicle. Incompatibility between stored characters in the phone (emoticon/emoji) and the Head Unit. See SI B84 03 12 about emoticon's effects on the vehicle.
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).
B0703142018-12-10. Service bulletin. ENGINE; STEERING; ELECTRICAL SYSTEM; EQUIPMENT. This Service Information bulletin supersedes SI B07 03 14 dated October 2015. Diagnosing Stored Fault Codes to Help Avoid Repeat Repair Visits. Fault codes stored in vehicles being serviced are not being diagnosed, leading to repeat repair visits (source- Analysis of FASTA data and repeat repair visit reports). INFORMATION Where diagnosis (vehicle or short test) with ISTA has already started, it is important to diagnose the fault code(s) listed below (when they are stored in the vehicle) to find their root cause during the current workshop visit. This will help lead to a reduction in workshop repeat repair visits and higher customer satisfaction.
B8408152018-12-10. Service bulletin. ELECTRICAL SYSTEM. "?SUBJECT During the QC1 the BMW Assist Test Call Fails . After the transport mode is deleted (during the QC1), a BMW Assist (SOS) test call is made by pressing the SOS/ E-Call button. However, the call only connects via voice (no data is transmitted). The operator indicates that a crash call has been sent. ATM fault code ""B7F348 - Provisioning without signature OTA"" is stored. The provisioning of the ATM (Advanced Telematics Module) has failed."
B6203162018-12-10. Service bulletin. ELECTRICAL SYSTEM. ?Clock gains or loses time. The time displayed in the KOMBI (instrument cluster) may gain or lose a few minutes each week. Internal KOMBI calculation error.
B6201162018-12-10. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. "Vehicles which have had the Instrument Cluster (KOMBI) replaced may display incorrect CBS (Condition Based Service) data after programming. 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. Incorrect SW calibration loaded after KOMBI replacement."
B1606162018-12-10. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ELECTRICAL SYSTEM. ?SERVICE ACTION: REPLACE LOW-PRESSURE ELECTRIC IN-TANK FUEL Please perform the procedure outlined in this Service Information on all affected vehicles before customer delivery or the next time the vehicle is in the shop.
B0006162018-12-10. Service bulletin. FUEL SYSTEM, OTHER; ELECTRICAL SYSTEM. ?June 2016 Maintenance and General Hints: technical Service Plugin Hybrids, (PHEV) MPGe Fuel Economy Rating.
B5409072018-12-10. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM; EQUIPMENT. ?RETRACTABLE HARDTOP STATUS REQUEST SUPPLEMENT. INFORMATION Documents have been developed showing the known correct statuses for all hall sensors and micro switches used to operate the retractable hard top (RHT). This document is intended to act as a supplement to the diagnostic information available in ISTA. Comparing these statuses to the actual statuses of a vehicle with a functional problem may assist in narrowing down which sensor/switch is contributing to the functional problem. For E93, the status request may be found by connecting the car to ISTA and selecting: Control module functions/CTM Convertible top module/Diagnosis Requests ?Sensors/Switches For F33/F83, the statuses should be checked using the applicable test plan as instructed in attachment B54 09 07 F33 F83 RHT Status.pdf. For I15, the statuses should be checked using the applicable test plan as instructed in attachment B54 09 07 I15 Top Status.pd
6306122018-12-03. Service bulletin. ELECTRICAL SYSTEM. "Check Control Message ""Adaptive Headlights Failed"". The Check Control message ""Adaptive Headlights Failed"" is displayed in the Central Information Display (CID). All headlights are functioning properly. One or more of the following fault codes are stored in the FEM (Front Electronic Module): * 0x8041BA - Adaptive headlight (AHL): system defective * 0x8041F8 - Right headlight driver module (HDM): AHL error * 0x8041FB - Left headlight driver module (HDM): AHL error CAUSE Software error in the (HDM) Headlight Driver Module"
6113052018-12-03. Service bulletin. ELECTRICAL SYSTEM. "Discharged Battery: Energy Diagnosis Must Be Performed. 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. A discharged battery can have various causes, most of which do not concern the battery itself. A failed battery is often the symptom and not the cause. A fully serviceable battery fails when an electrical component causes the battery to discharge; the battery becomes internally damaged and must be replaced. For more information, refer to www.batteryuniversity.com/parttwo-42B.htm For this reason, replacing the battery is not usually a permanent repair. The cause of the discharged battery must be analyzed in order to guarantee a proper repair. In order to properly repair the vehicle the first time in the workshop, it is very important that the diagnostic test plans are performed to completion with all results taken into to consideration. The procedure as outlined below contains information that will guide the technician into properly repairing the vehicle and getting paid for a warranty claim. CAUSE Refer to the ""Procedure"" section of this Service Information for details."
6115132018-12-03. Service bulletin. ELECTRICAL SYSTEM. "ACSM and ICM Warning Lamps Are Illuminated. Various warning lamps and check control messages relating to the ACSM and ICM systems are illuminated. Many ""No Message"" faults are stored for various control modules. The ACSM and ICM modules may also not be responding to a vehicle test in ISTA. CAUSE Ground point Z10*10B is loose."
6128122018-12-03. Service bulletin. ELECTRICAL SYSTEM. "Key Intermittently Not Detected and Not Possible to Start Engine. Intermittently it is not possible to start the engine. Terminal 15 cannot be switched on. The remote control key is not detected inside the vehicle. The following check control messages are displayed: * ""Remote control not present or disrupted. Not possible to start engine"" * ""No remote control. Not possible to start engine"" Note: The vehicle can still be started via the emergency start coil on the side of the steering column. Front Electronic Module (FEM) software error"
6123132018-12-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Integrated Owner's Manual No Longer Available After Programming. After a programming or replacement of the Front Electronics Module (FEM), the customer states that the Integrated Owner's Manual (IBA) can no longer be selected in the vehicle. CAUSE FEM application error
5136082018-12-03. Service bulletin. STRUCTURE; VISIBILITY; 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. Complete the diagnosis test plan using the latest ISTA version. The test plan can be accessed via the following path: ""Information Search / Function Structure / Body / Mirror / Exterior mirrors / Driver's or passenger side / Exterior Mirror https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/15...12/6/2013 Page 2 of 2 Malfunction,"" and then press ""Start Search."" Select the test plan ""AM5102_00010."""
6513102018-12-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL. In all audio modes (radio, CD, AUX-In, etc.), the audio output is distorted. It is more noticeable with high bass and high audio volume settings. There may also be an intermittent interference noise coming from the loudspeakers at low audio volume or when the radio is turned off. Audio settings in the RAD2+ (radio professional)
6505132018-12-03. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. Basic SVS: Voice Recognition Inoperative After Programming. After programming the vehicle with ISTA/P 2.48.x, the voice recognition (Basic SVS) is inoperative. NOTE: The Basic SVS only includes voice recognition for phone functions. Error in the coding data of ISTA/P 2.48.x The voice recognition function is unintentionally deactivated.
6102112018-12-03. Service bulletin. ELECTRICAL SYSTEM. Advanced Onboard Battery Diagnostics. INFORMATION Starting with the introduction of the F10 (5 Series), an advanced intelligent battery sensor has been used. This now makes it possible for the vehicle to monitor the condition of the battery in order to determine if the battery needs to be recharged or replaced, along with the remaining capacity of the battery. The analysis and testing of the battery's SoC (State of Charge) and SoH (State of Health) is now performed using ISTA (Integrated Service Technical Application) diagnosis. A separate test using a battery tester is no longer needed.
1701132018-12-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Action: Replace Coolant Expansion Tank. The low coolant level warning may come on in the information display. CAUSE Insufficient contact at the electrical connector for the coolant level sensor causes an inaccurate reading of the coolant level.
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

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