34 35 001 Replacing a brake lining sensor

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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 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 Wheels

Open plug housing (1).

Unclip lead of brake lining sensor (2) from plug housing (1).

Disconnect associated plug connection of lead from brake lining sensor (2).

Feed lead from brake lining sensor (2) out of fixtures.

Fig 1: Identifying Brake Plug Housing And Sensor (Version 1)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Identifying Brake Plug Housing And Sensor (Version 2)

Courtesy of BMW OF NORTH AMERICA, INC.

Press clip (1) together and detach brake pad sensor (2) in direction of arrow from brake caliper (3).

Installation:

Make sure clip (1) and brake lining sensor (2) are correctly seated in brake caliper (3).

Fig 3: Identifying Clip, Pad Sensor And Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.