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Home >> BMW >> 2013 >> 740Lxi >> Repair and Diagnosis >> External Pages >> Different car >> Section 983 (Brakes - Repair - F31) >> Electrical Components/Wear Indicator >> 34 35 001 Replacing a brake pad sensor (front)

34 35 001 Replacing a brake pad sensor (front)

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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 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: 

Fold the connector housing (1) up and disconnect the plug connection.

Detach the brake pad wear sensor from the brackets (2).

Installation note: 

Do not route/fix the brake pad wear sensor cable via the dust cap of the brake ventilation valve!

Fig 1: Identifying Brake Pad Wear Sensor Brackets And Connector Housing
G10095900Courtesy of BMW OF NORTH AMERICA, INC.

Press clamps (1) together and pull brake pad wear sensor (2) from brake pad (3) in direction of arrow.

Installation note: 

Make sure clamps (1) and brake pad wear sensor (2) are correctly seated in brake pad (3).

Fig 2: Pulling Brake Pad Wear Sensor
G04726673Courtesy of BMW OF NORTH AMERICA, INC.