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Service bulletins for the 2020 BMW 330i

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.

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

By type

By component

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
B2403232023-09-25. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. ?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start."
B2402232023-07-24. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. BMW AG has issued an Emissions Recall (effective March 17, 2023) on a certain Model Year 2021 - 2023 BMW vehicles that were produced between June 16, 2020, and December 13, 2022. Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.
B2402232023-05-01. Service bulletin. POWER TRAIN. BMW AG has issued a Delivery Stop: Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.
B2604222023-03-20. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32 F (0 C) or lower. The noise goes away as the vehicle/driveline reaches operating temperature.
B1225192023-01-30. Service bulletin. POWER TRAIN. After an automatic engine start (MSA start), the transmission intermittently goes into the Park "P" or Neutral "N" position without any customer influence.
B3401222022-06-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. When driving off from a standstill, a delayed or sluggish throttle response may be noticed sporadically.
B6103192021-07-06. Service bulletin. POWER TRAIN; EQUIPMENT. SERVICE ACTION: PROGRAM OR REPLACE DUAL STORAGE SYSTEM BATTERY: A software error intermittently causes a continuous resetting of the microcontroller in the power management system. This causes the red Check Control Message (CCM) "Replace Battery" to be illuminated.
B6101202021-04-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. ACCESSORIES DO NOT POWER UP FROM THE FRONT 12 V POWER SOCKET PLUG: Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12-volt power socket plug.
B5113182020-06-15. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM; POWER TRAIN. LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE: Any or all of these conditions may be present: A. The exterior rearview mirror glass is discolored or cracked B. The power windows and folding mirrors may not operate C. One or more of the following LIN bus faults are stored in the BDC (Body Domain Controller): D90C03 LIN bus master B: short circuit - BDC D90C04 LIN bus master B: No communication - BDC D90C05 LIN bus master B: Communication failed - BDC D90D07 Operating facility switch block (LIN): Missing LIN slave D90D0A exterior rearview mirror left (LIN bus): Absent LIN slave - BDC D90D0D exterior rearview mirror right (LIN bus): Absent LIN slave - BDC 804246 exterior rearview mirror left (LIN bus): Heating or electrochrome: faulty - BDC 804256 exterior rearview mirror right (LIN bus): Heating or electrochrome: faulty - BDC 804265 exterior mirror left or right: Excess temperature - BDC 804260 exterior mirror left or right: Overvoltage - BDC 804261 exterior mirror left or right: Undervoltage - BDC Faulty exterior rearview mirror electronics have created a short on the LIN bus damaging the mirror glass and causing functional errors in power window and exterior mirror operation.
B6631192020-04-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; POWER TRAIN:MANUAL TRANSMISSION:SHIFT PATTERN INDICATOR. REARVIEW CAMERA: SPORADICALLY NO IMAGE IS DISPLAYED: This Service Information Bulletin (Revision 2) replaces SI B66 31 19 dated February 2020. When reverse gear is selected or the rear view camera is activated sporadically no image is displayed on the Central Information Display (CID). If the ignition is cycled off and back on the function is restored. Software error between the head unit and the rear-view camera.
B3405172020-04-20. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC; WHEELS; POWER TRAIN. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: This Service Information Bulletin (Revision 3) replaces SI B34 05 17 dated September 2017. Ticking noise coming from front wheel while cornering without brakes applied noticeable at low speeds. The vehicle must be moving. See attached video V34 01 20 Note: For a similar noise heard when parking with the brakes applied refer to SIB 31 01 12. Microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs.
B3107192020-02-18. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SERVICE ACTION: APPLY CAVITY WAX PROTECTION INSIDE THE FRONT AXLE SUPPORT: The corrosion protection applied to the inside of the front axle support during the manufacturing process may have minor coating defects. In individual cases this can lead to localized rust damage on the front axle support over the service life of the vehicle. Manufacturing process error.

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