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Home >> BMW >> 2016 >> X3 xDrive28d >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair >> Electrical Components/Wear Indicator >> 34 35 001 Replacing a brake pad sensor (front)

34 35 001 Replacing a brake pad sensor (front)

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 an already ground brake pad wear sensor has to be replaced although the minimum brake pad thickness has not yet been reached, it is necessary to file down the new sliding contact with a file to the same length as the ground sliding contact.

Necessary preliminary work: 

Unclip line from holder (1).

Open housing cover.

Disconnect plug connection (2).

Installation note: 

Make sure the plug connections snaps in correctly and the line is fitted correctly in the holders.

Fig 1: Removing Line From Holder
G09947392Courtesy of BMW OF NORTH AMERICA, INC.

Unclip line from holders (1).

Installation note: 

Ensure proper locking of the holders and proper seating of the line in the holders.

Fig 2: Identifying Brake Line And Holders
G09947393Courtesy of BMW OF NORTH AMERICA, INC.

Disengage line from brake pad wear sensor from holder (1).

Pull brake pad wear sensor (2) in direction of arrow out of brake pad.

Installation note: 

Make sure brake pad wear sensor (2) is correctly seated in brake pad and holder (1).

Fig 3: Disengaging Line From Brake Pad Wear Sensor
G06890027Courtesy of BMW OF NORTH AMERICA, INC.