34 35 003 Replacing a brake pad sensor (rear)

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: The brake pad wear sensor must be replaced once it has been removed (brake pad wear sensor loses its retention capability in the 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 ground sliding contact.

Necessary preliminary tasks

Remove rear right WHEEL

Slacken nut (1).

Pull wheel arch trim (2) gently to one side.

Disengage cable from holders (3).

Fig 1: Identifying Wheel Arch Trim With Nut

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Disconnect plug connection (1).

Installation:

Ensure proper locking of the plug connector and proper seating of the cable in the brackets.

Fig 2: Identifying Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Disengage cable from holders (1).

Detach brake pad wear sensor (2) in direction of arrow from brake caliper (3).

Installation:

Make sure holders (1) and brake pad wear sensor (2) are correctly seated in brake caliper.

Fig 3: Identifying Brake Pad Wear Sensor And Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.