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Service bulletins for the 2015 BMW 435i

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.

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

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Bulletins, newest first
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.
B6526172019-12-16. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EQUIPMENT:ELECTRICAL. NBT EVO CHANGES BETWEEN SELECTIONS BY ITSELF WITHOUT DRIVER INPUT- GHOST BEHAVIOR: The Central Information Display (CID) changes between selections ("ghost behavior") and sounds an audio tone without the CID Screen being touched. The audio tone is the same one that sounds when you touch the CID with your finger to make a 'touch' selection.
B6521192019-12-16. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. AUDIO PLAYBACK NOT POSSIBLE: No audio heard inside the vehicle. Failure of the audio amplifier due to water ingress in the luggage compartment.
B6123152019-12-16. Service bulletin. EQUIPMENT; VISIBILITY:WINDSHIELD WIPER/WASHER. Low Washer Fluid Warning Light is illuminated when the Washer Fluid Tank is Full : The low washer fluid warning is illuminated even though the washer fluid reservoir is full. There are no faults stored in the system for the washer fluid level switch. A non-approved washer fluid was used that is silicone-based. Silicone-based fluids are not compatible with the contactless capacitive level sensor. Fluids that contain a silicone additive are normally colored other than blue.
B6514192019-10-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. HEAD UNIT NBT EVO (HU-H2) PROGRAMMING ABORT: The CID screen may light up blue. When this occurs A battery reset is not successful in restoring head unit operation Software error in the Bootloader file (BTLD) of the head unit.
B3208192019-10-21. Service bulletin. STEERING:GEAR BOX (OTHER THAN RACK AND PINION). THUMPING NOISE FROM FRONT AXLE WHILE STEERING: A "thumping" noise is heard from the front axle area during slow speed steering.
B3105142019-10-21. Service bulletin. SUSPENSION. Front Suspension Ride Height Has Dropped: The front suspension ride height has dropped on one or both sides due to overload. This is caused by driving over obstacles (e.g. potholes) or an impact severe enough for the front spring strut damper to slip through the clamp of the steering knuckle.
B3208182019-09-23. Service bulletin. STEERING. SERVICE ACTION: REWORK THE STEERING GEAR. Screws attaching the power pack to the steering gear may be broken. Broken screws result in noises during steering motions and variable steering assistance. A Check Control Message (CCM) may be displayed.
B1801182019-09-23. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. DIAGNOSING NOISE FROM THE REAR EXHAUST FLAP (B58) This Service Information Bulletin (Revision #1) replaces SI B18 01 18 dated February 2018. Warranty Labor Operations changed. There is a rattling noise from the rear exhaust flap during initial start-up. The rattle could last up to sixty seconds.
B1213182019-09-23. Service bulletin. ENGINE. DME FC 21A02D - COMBUSTION CONTROL: VALVE LIFT AT IDLE This Service Information Bulletin (Revision #2) replaces SI B12 13 18 dated May 2018. Correction software level updated Procedure text changes made due to an ISTA/D test plan name change Adjusted text in the Warranty section for use with AIR and the ISTA/D test plan name change. The vehicle will run rough or hesitate when accelerating from a stationary position.
B6515192019-09-23. Service bulletin. EQUIPMENT. SECURITY IMPROVEMENTS FOR CONNECTEDDRIVE. Security patches for non-safety critical vulnerabilities in BMW head units Entry Nav Entry Media NBT and NBT EVO.
B6406132019-09-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C COOLING: INTERMITTENT REDUCTION OF AIR FLOW This Service Information Bulletin (Revision 9) supersedes SI B64 06 13 dated June 2017. 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 due to the position of the evaporator temperature sensor.
B5133162019-08-19. Service bulletin. SEATS:MID/REAR ASSEMBLY; STRUCTURE:BODY. LOSHING NOISES/WATER IN REAR PASSENGER COMPARTMENT: This Service Information bulletin replaces SI B51 33 16 dated August 2016.
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.
B6514192019-07-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. HEAD UNIT NBT EVO (HU-H2) PROGRAMMING ABORT. During programming several aborts can occur in the head unit NBT EVO (HU-H2).
B6511192019-07-22. Service bulletin. AIR BAGS. Due to an issue during supplier production the driver and/or passenger knee air bags could become damaged during deployment.
B6108192019-07-22. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER:SWITCH/WIRING. Service Information June 2019 General Electrical Systems B61 08 19 Technical Service WINDSHIELD WIPERS SWITCH ON BY THEMSELVES. The windshield wipers switch on by themselves and can no longer be switched off despite activation of the switch. An internal software error in the SZL (steering column switch cluster).
B5409072019-07-22. Service bulletin. STRUCTURE. RETRACTABLE HARDTOP STATUS REQUEST SUPPLEMENT. This Service Information bulletin replaces SI B54 09 07 dated September 2018.
B5209192019-07-22. Service bulletin. SEATS. CRACKING NOISE FROM SEAT BACKREST. Groaning/Cracking noises are heard from the front seat backrest when the vehicle is cornering.
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.
B1101192019-07-22. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. ENGINE VIBRATIONS OR NOISE This Service Information bulletin replaces SI B11 01 19 dated February 2019.
B8407192019-06-24. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. BLUETOOTH CONNECTION IS LOST DURING A PHONE CALL. During an active call the call audio autonomously switches from the vehicle hands-free system to the phone.
B8403112019-06-24. Service bulletin. EQUIPMENT. TELEMATICS CONTROL UNIT ACTIVATION VIA DCSNET FOR BMW ASSIST.
B8402142019-06-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. INFORMATION New information provided by this revision is preceded by this symbol. This Service Information bulletin replaces SI B84 02 14 dated September 2018.

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