Necessary preliminary tasks

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.

Remove HYDRAULIC CONTROL UNIT

Release screws (1) and remove holder (2).

Installation:

Tightening torque 34 51 4AZ .

Fig 1: Identifying DSC Control Unit Holder And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage to the contacts when removing and installing the hydraulic control unit.

Release screws (1) and carefully detach control unit (2) towards top.

Fig 2: Identifying Screws And DSC Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Cleaning with compressed air, chemical solvents and sharp-edged objects is not permitted.
Do not touch pressure sensor contacts (2) with your fingers or clean the contacts.

If necessary, clean sealing surface (1) with a plastic scraper or a fluff-free cloth.

Fig 3: Identifying Sensor Contacts And Sealing Surface

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IMPORTANT: Do not touch valve coils (1) and pressure sensor contact springs (2) with your fingers, do not clean or readjust these components either.

Check gasket (3) for damage. If damaged, replace DSC control unit (4).

Fig 4: Identifying Valve Coils, Pressure Sensor Contact Springs, Gasket And DSC Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Make sure screws are inserted evenly and DSC control unit rests on hydraulic control unit.

Replace screws.

Observe tightening sequence (1-4).

Tightening torque 34 51 1AZ .

Fig 5: DSC Control Unit Bolts Tightening/Loosening Sequence

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Replacement:

Carry out PROGRAMMING/ENCODING .
STEERING ANGLE SENSOR ADJUSTMENT .
Brake line interchange check:
Function check of hydraulic control unit