BMW X5 Owners & Service Manuals

BMW X5: Overview Of Electronic Components

Brakes
Fig. 103: Identifying Electronic Components

  1. DSC control unit
  2. Rotation rate sensor
  3. Brake-pad-wear sensor
  4. Pulse generator

REMOVING AND INSTALLING / REPLACING DSC CONTROL UNIT

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

Necessary preliminary tasks:

IMPORTANT: Removing pump motor from valve block is not permitted! Do not twist pump motor.

IMPORTANT: Secure provided retaining lugs (2) from repair kit for control unit with aid of plugs (3).

Close off pipe connections with plugs (1).

Brakes
Fig. 104: Identifying Retaining Lugs

IMPORTANT: Control unit must not come into contact with dirt or moisture. Contacts must not be bent!

Release screws (1) and carefully remove control unit (2).

Installation:

Tightening torque 34 51 1AZ.

Brakes
Fig. 105: Removing Control Unit

Replacement:

REPLACING ONE FRONT PULSE GENERATOR

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

Necessary preliminary tasks:

Disengage cable guides (2).

Open connector housing (1), pull plug connection out of holder and disconnect.

Pull cable with rubber grommet out of holders (3).

Installation:

Ensure proper locking of plug connector and proper seating of rubber grommets.

Brakes
Fig. 106: Identifying Connector Housing And Cable Guides

Disengage cable guides (1).

Release Torx socket screw (2) and pull pulse generator (3) out of bore.

Installation:

Tightening torque 31 51 3AZ.

Clean bore hole for pulse generator and grease with Staburags NBU 12/K lubricating.

Brakes
Fig. 107: Identifying Torx Socket Screw And Cable Guides

REPLACING A REAR PULSE GENERATOR

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

Necessary preliminary tasks:

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.

Brakes
Fig. 108: 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.

Brakes
Fig. 109: Identifying Cable Route

Release Torx socket screw (1).

Withdraw wheel speed sensor (2) from bore hole.

Installation:

Tightening torque 34 51 3AZ.

Clean bore hole for pulse generator and grease with Staburags NBU 12/K lubricating grease.

Brakes
Fig. 110: Identifying Torx Socket Screw And Wheel Speed Sensor

REMOVING AND INSTALLING/REPLACING DSC YAW SENSOR

IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).

IMPORTANT: Do not kink floor panelling under any circumstances!

Necessary preliminary tasks:

Remove floor inlay (2).

Release screws.

Tightening torque 34 51 2AZ.

Disconnect plug connection and remove yaw sensor (1).

Carry out calibration/adjustment of DSC sensor.

Brakes
Fig. 111: Identifying Yaw Sensor And Floor Inlay

Troubleshooting

TROUBLESHOOTING BRAKE SYSTEM

Troubleshooting brake system

Brakes

Brakes

Brakes

Brakes

Brakes

Brakes

Brakes

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