BMW X5: Electrical Components
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 a brake lining sensor that has already been ground has to be replaced even though the minimum brake lining 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 wheel.
Disengage cable from cable guides (2).
Open cover (1) on plug housing.
Disconnect plug connection.
Disengage cable guides (3).
.png)
Fig. 77: Identifying Cover And Cable Guide
Pull brake pad sensor (1) in direction of arrow out of brake pad.
Installation:
Make sure brake pad sensor (1) is correctly seated in brake pad.
Disengage cable of brake pad sensor from holders (2).
.png)
Fig. 78: Identifying Brake Pad Sensor
REPLACING A BRAKE PAD SENSOR (REAR)
Necessary preliminary tasks:
- Partially detach rear wheel arch trim.
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 lining sensor that has already been ground has to be replaced even though the minimum brake lining 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.
Open housing cover (1).
Disconnect plug connection (2).
Installation:
Ensure proper locking of the plug connector and proper seating of the cable in the brackets.
.png)
Fig. 79: Identifying Plug Connection And Housing Cover
Disengage cable (1) along marked lines from holders.
Installation:
Ensure proper locking of the holders and proper seating of the cable in the holders.
.png)
Fig. 80: Identifying Cable Route
Pull brake pad sensor (1) in direction of arrow out of brake pad.
Installation:
Make sure brake pad sensor (1) is correctly seated in brake pad.
Disengage cable of brake pad sensor from holders (2).
.png)
Fig. 81: Identifying Brake Pad Sensor
READ NEXT:
General Information On Braking In New Brake Discs / Brake Pads
IMPORTANT: After completing work:
Carry out function check on brake analyzer (test stand) to ensure
that the
brakes complies with legal requirements.
Carry out test braking while driving at low
Adjusting Parking Brake
The parking brake test must be carried out on the roller dynamometer as
follows.
Release position (engine off / ignition on ):
Wheel circumferential force right / left < or = 300 N.
Press park
SEE MORE:
Compression Testing
In order for an engine to run smoothly and efficiently, the combustion
chamber must be free of leakage. An
engine with low compression in one or more cylinders is inefficient and will run
rough or lack in performance.
Low compression may or may not cause the MIL to illuminate.
Low compression ca
PDC Park Distance Control
Principle
Park Distance Control (PDC) helps with parking.
Acoustic and visual warnings signal obstacles in
front of or behind the vehicle.
Depending on the equipment version: obstacles
that are detected by the side ultrasonic sensors
may also be reported by the side protection.
General information
