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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: Body and frame are shown. Show all

Bulletins, newest first
B5112192020-10-19. Service bulletin. STRUCTURE. KIDNEY GRILL ACTIVE AIR FLAP FAULTS: A check control message or MIL (Malfunction Indicator Lamp) may be illuminated.
B6115202020-08-31. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. DELIVERY STOP - TRUNK LOCK SWITCH WIRING HARNESS: BMW AG has issued a Delivery Stop (effective June 5, 2020) on a small number of Model Year 2020 BMW 3 Series vehicles that were produced on March 25, 2020 and March 26,2020. The wiring harness from the Body Domain Controller (BDC) to the hotel setting switch is missing. Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to a Delivery Stop, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to a Delivery Stop. The wire from the Body Domain Controller (BDC) to the wiring harness connector leading to the hotel position switch is missing.
B5401202020-08-31. Service bulletin. STRUCTURE. SERVICE ACTION - CHECK SUNROOF SEALING: The sunroof frame may not have been properly sealed, causing a water leak into the vehicle. Improper sealing during production.
B6115202020-07-27. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE. DELIVERY STOP: TRUNK LOCK SWITCH WIRING HARNESS: BMW AG has issued a Delivery Stop (effective June 5, 2020) on a small number of Model Year 2020 BMW 3 Series vehicles that were produced on March 25, 2020 and March 26,2020. The wiring harness from the Body Domain Controller (BDC) to the hotel setting switch is missing.
B6111202020-05-18. Service bulletin. STRUCTURE; LATCHES/LOCKS/LINKAGES. WHEN LOCKING VEHICLE DOORS ARE LOCKED BUT VEHICLE IS NOT SECURED: The customer complains that when locking the vehicle from the outside using the remote control: The doors lock The alarm system is not activated The side mirrors (when the function is activated) do not fold in CAUSE Due to a software error on the Body Domain Controller (BDC) it identified the remote control as being inside even though the remote control is actually located outside the vehicle. This caused the doors to be locked without securing the vehicle.
B5408192020-04-20. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. SUNROOF REVERSES WHEN CLOSING: This Service Information Bulletin (Revision 3) replaces SI B54 08 19 dated December 2019. The sunroof reverses direction (anti-traps) just as the sunroof glass meets the wind deflector. The sunroof may not properly initialize as a result.
B5102202020-02-18. Service bulletin. STRUCTURE. RATTLE NOISE FROM COWL TRIM: A rattle noise is present while driving from the cowl area under the windshield at temperatures below 50C°F. The rattle may be present from either or both sides (right and/or left). At temperatures below 50C°F the cowl panels below the windshield can contact the adjacent panels.
B5415192020-01-21. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY; STRUCTURE. GROANING NOISE FROM SUNROOF: A groaning noise is present from the sunroof glass panel while driving over rough road surfaces or during body flex. The noise may also be present while the sunroof is opening into the vented position. Interference between the sunroof glass panel perimeter seal and the vehicle roof.

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