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Service bulletins for the 2021 BMW Z4

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.

115 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
B5402252025-04-03. Service bulletin. STRUCTURE:BODY. While driving on an uneven road, a “clicking”sound is heard from the front bow/cowl panelarea of the convertible top.
B5403242025-01-23. Service bulletin. STRUCTURE:BODY. The convertible top does not open or close.
B5113232023-09-25. Service bulletin. STRUCTURE. ?The outer A-pillar trim panel (arrow) protrudes outward (circled) towards the cowl seal.
B2402222023-01-30. Service bulletin. STRUCTURE. A cracking, metallic noise from under the center of the vehicle.
B6122192022-01-24. Service bulletin. EQUIPMENT:ELECTRICAL; STRUCTURE:BODY:DOOR. The customer states that the vehicle locks itself when the last door was closed, even though the remote control/display key was inside the vehicle.
B6508212021-08-09. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; STRUCTURE:INTERIOR PANELS:DASHBOARD; EQUIPMENT. Customer states the Central Information Display is flickering and the picture is shifting.
B5107212021-05-24. Service bulletin. STRUCTURE:BODY:DOOR. INCREASED EFFORT REQUIRED TO OPEN DOORS: One or more doors may require increased effort to open.
B6111202021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; STRUCTURE:BODY:DOOR; EQUIPMENT ADAPTIVE/MOBILITY. 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.
B5112192020-10-19. Service bulletin. STRUCTURE. KIDNEY GRILL ACTIVE AIR FLAP FAULTS: A check control message or MIL (Malfunction Indicator Lamp) may be illuminated.

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