LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2009 >> 135i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 992 (Brakes - Repair) >> Electrical Components >> 34 35 001 Replacing a brake pad sensor (front)

34 35 001 Replacing a brake pad sensor (front)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
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: 

Open plug housing (1).

Disconnect plug connection (2).

Feed brake pad sensor out of holders (3).

Fig 1: Identifying Plug Housing, Holders And Plug Connection
G05778555Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation: 

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

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