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Home >> BMW >> 2017 >> 330i Standard Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair (F30) >> 34 35 Electrical Components/Wear Indicator >> 34 35 003 Replacing a brake pad sensor (rear)

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 sanded sliding contact.

Necessary preliminary tasks: 

Slacken nut (1).

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

Disengage cable from holders (3).

G05778557Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Installation note: 

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

G05778558Courtesy of BMW OF NORTH AMERICA, INC.

Disengage cable from holders (1).

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

Installation note: 

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

G10095904Courtesy of BMW OF NORTH AMERICA, INC.