2021-2023 BMW Z4 Convertible Top Clicking Sound TSB

Symptoms of the BMW Z4 Clicking Sound

Owners of 2021-2023 BMW Z4 Roadster (G29) vehicles may notice a distinct "clicking" sound originating from the front bow/cowl panel area of the convertible top. This noise is most commonly heard when the vehicle is driven over uneven road surfaces.

Diagnosis and Trigger Conditions

The "clicking" sound is specifically linked to driving conditions where the vehicle experiences uneven terrain, causing movement in the convertible top's front section. Technicians are advised to verify the customer's concern by driving the vehicle under similar conditions to confirm the presence of the BMW Z4 clicking sound. A diagnostic video, BV 54 01 25, is available to assist technicians in identifying the exact source of the noise.

Cause of the Issue

BMW has identified that the "clicking" sound is caused by worn mounting clips. These four clips are responsible for securing the front bow panel to the convertible top. Over time, these clips can wear down, leading to play and the resultant "clicking" noise.

Repair Procedure Summary

To resolve the "clicking" sound, the repair outlined in BMW TSB SIB 54 02 25 involves replacing the worn mounting clips. The procedure is as follows:

1. A technician will first verify the customer's complaint and the presence of the "clicking" sound.
2. The front cowl panel of the convertible top must be carefully removed. This step follows specific repair instructions detailed in ISTA/AIR document 54 34 127.
3. All four mounting clips that secure the front cowl panel to the convertible top will be replaced with new ones.
4. Finally, the vehicle will be reassembled, and the repair will be verified to ensure the "clicking" sound has been eliminated.

This repair is designated as "Mobile Friendly," indicating it can be performed outside of a traditional service bay.

Required Parts

The following part is required to perform this repair:

• Part Number: 54 34 9 449 199
• Description: Mounting clip trim
• Quantity: 4

Claim Information and Warranty Coverage

This repair, identified by Repair Code 5434193900 ("Front bow trim panel Unpleasant noises"), is covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Dealers will use specific labor operation codes for diagnosis and repair, such as 51 00 001 for localizing body complaints or 54 34 127 for removing and installing the windshield panel trim. For detailed documentation and claiming procedures, technicians should refer to BMW Service Information Bulletins SI B01 01 20 or B01 07 20.

What Owners Should Do

If you own a 2021-2023 BMW Z4 (G29) and are experiencing a "clicking" sound from your convertible top, especially when driving on uneven roads, contact your authorized BMW dealer. Explain the symptoms, referencing BMW TSB SIB 54 02 25, to ensure your vehicle receives the appropriate inspection and repair.

NHTSA ID: 11016441