Remove rear brake pad wear sensor
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
Preliminary work
- Refer to REMOVING THE REAR RIGHT WHEEL .
NOTE:
TECHNICAL INFORMATION
The brake pad wear sensor must be replaced immediately once it has been removed because the brake pad wear sensor loses its retention capacity in its brake pad.
If a brake pad wear sensor that has already been ground has to be replaced even though the minimum brake pad thickness has not yet been reached, you must observe the following:
The new sliding contact must be filed down with a file to the same length as the sanded sliding contact.
The brake pad wear sensor must be replaced immediately once it has been removed because the brake pad wear sensor loses its retention capacity in its brake pad.
If a brake pad wear sensor that has already been ground has to be replaced even though the minimum brake pad thickness has not yet been reached, you must observe the following:
The new sliding contact must be filed down with a file to the same length as the sanded sliding contact.
- Remove the brake pad wear sensor (1) out of the brake pad in arrow direction.
- Detach the cable of the brake pad wear sensor from the bracket (1).
- Detach the brake pad wear sensor from the holders (1).
- Open the cover (2) and unlock and disconnect the plug connection.