BMW X5: Overview Of Electronic Components

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:

• Remove hydraulic unit.

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).

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.

Fig. 105: Removing Control Unit

Replacement:

• Carry out programming/coding.
• Adjustment of steering angle sensor.
• Mix-up check of brake lines

REPLACING ONE FRONT PULSE GENERATOR

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

Necessary preliminary tasks:

• Read and comply with General Information.

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.

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.

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:

• Partially detach rear wheel arch trim.
• Read and comply with General Information.

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.

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.

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.

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 right front seat.
• Lift floor panelling and fold back to one side

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.

Fig. 111: Identifying Yaw Sensor And Floor Inlay

Troubleshooting

TROUBLESHOOTING BRAKE SYSTEM

Troubleshooting brake system

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