# Service bulletin B540225

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.

- Type: Service bulletin
- NHTSA id: 11016441
- Published by NHTSA: 2025\-04\-03
- Manufacturer's number: B540225
- Manufacturer's date: 2025\-03\-27
- NHTSA component: STRUCTURE:BODY

## NHTSA's summary

While driving on an uneven road, a “clicking”sound is heard from the front bow/cowl panelarea of the convertible top.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016441-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016441-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame

## Vehicles listed

- 2021 to 2023 BMW Z4

## Recalls for the same vehicles and component

- [2023075](/recalls/tc/2023075.md), 2023-02-17: Structure

## Other bulletins for the same vehicles and component

- [B540324](/bulletins/11013048.md), 2025-01-23, Service bulletin: STRUCTURE:BODY. The convertible top does not open or close.
- [B511323](/bulletins/10242693.md), 2023-09-25, Service bulletin: STRUCTURE. ?The outer A\-pillar trim panel \(arrow\) protrudes outward \(circled\) towards the cowl seal.
- [B240222](/bulletins/10230725.md), 2023-01-30, Service bulletin: STRUCTURE. A cracking, metallic noise from under the center of the vehicle.
- [B612219](/bulletins/10206686.md), 2022-01-24, 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.
- [B650821](/bulletins/10200246.md), 2021-08-09, 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.
- [B510721](/bulletins/10194300.md), 2021-05-24, Service bulletin: STRUCTURE:BODY:DOOR. INCREASED EFFORT REQUIRED TO OPEN DOORS: One or more doors may require increased effort to open.
- [B611120](/bulletins/10186221.md), 2021-02-01, 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.
- [B511219](/bulletins/10181225.md), 2020-10-19, Service bulletin: STRUCTURE. KIDNEY GRILL ACTIVE AIR FLAP FAULTS: A check control message or MIL \(Malfunction Indicator Lamp\) may be illuminated.

JSON: [/v1/bulletins/11016441](/v1/bulletins/11016441)

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