34 35 003 Replacing a brake pad sensor (rear)

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 Arch Trim, Holders And 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

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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 Holder

Courtesy of BMW OF NORTH AMERICA, INC.