BMW X5: Overview Of Electronic Components
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Fig. 103: Identifying Electronic Components
- DSC control unit
- Rotation rate sensor
- Brake-pad-wear sensor
- 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).
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Fig. 111: Identifying Yaw Sensor And Floor Inlay
Troubleshooting
TROUBLESHOOTING BRAKE SYSTEM
Troubleshooting brake system
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READ NEXT:
Checking And If Necessary Correcting Oil Cooler Line (N52K)
IMPORTANT: Danger of scalding! Only perform this work after engine has
cooled down.
Necessary preliminary tasks:
Remove underbody protection.
Recycling
Transmission fluid emerges when oil lines ar
SEE MORE:
Radiator, Expansion Tank
CHECKING COOLING SYSTEM FOR WATER LEAKS
Special tools required:
17 0 101 17 0 100 TESTER
17 0 113 17 0 100 TESTER
17 0 114 17 0 100 TESTER
WARNING: Danger of scalding!
Only perform this work after engine has cooled down.
Checking pressure drop in cooling system:
Open cap on coolant expansion ta
Removing And Installing/Replacing All Handbrake Shoes
Special tools required:
34 4 000.
Installation:
Remove rear brake disc.
Release electromechanical parking brake (EMF).
After completing tasks, adjust handbrake.
Disconnect return springs (1) with brake spring pliers.
Installation:
Check return springs (1) and replace if necessary.
Return s
