BMW X5: Mechanical-Hydraulic
REMOVING AND INSTALLING OR REPLACING DSC HYDRAULIC UNIT
Necessary preliminary tasks:
- Read and comply with General Information.
- Extract brake fluid
NOTE: Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.
After completing work:
- Bleeding braking system
IMPORTANT: Do not mix up brake lines.
If necessary, mark before removal.
Brake lines must not be bent.
Close off connection bores with plugs.
Disconnect plug connection (1).
Unfasten brake lines (2).
Tightening torque 34 32 1AZ.
If necessary, release brake lines from holder on bulkhead.
Unscrew bolt (3).
Tightening torque 34 51 6AZ.
Pull hydraulic control unit with holder out of guide pins (4) and remove.
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Fig. 96: Identifying Brake Lines And Plug Connection
When replacing hydraulic unit:
Release screws (1) and convert holder (2).
Installation:
Tightening torque 34 51 5AZ.
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Fig. 97: Identifying Convert Holder And Screw
When replacing control unit:
- Carry out programming/coding.
- Adjustment of steering angle sensor.
- Mix-up check of brake lines.
- Function check, hydraulic unit.
READ NEXT:
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
Overview Of Electronic Components
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
SEE MORE:
Initial Operation With Test Run Of Dynamic Drive
NOTE: The Service function Initial operation of Dynamic Drive must be
carried out
after:
Work on the Dynamic Drive system which involved opening hydraulic
lines
Replacement / Programming / Coding Dynamic Drive control unit
Replacement lateral acceleration sensor
Parameters and zero point of
Pressing Output Shaft Out Of Drive Flange (Wheel Hub) And Drawing In
Special tools required:
33 2 111
33 2 115
33 2 116
33 2 117
33 2 118
33 2 160
33 2 201
33 2 202
33 2 203
33 2 205
33 2 207
33 2 208
33 5 070
WARNING: Risk of injury!
It is not permitted to use the impact screwdriver to press out and draw in
the output shaft.
IMPORTANT: Risk of damage!
