34 52 516 Removing And Installing/Replacing DSC Control Unit

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

IMPORTANT: Read and comply with notes on PROTECTION AGAINST DAMAGE FROM ELECTROSTATIC DISCHARGE (ESD protection).

Necessary preliminary tasks:

Remove HYDRAULIC UNIT

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

Installation note:

Tightening torque 34 51 4AZ .

Fig 1: Holder And Screws

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

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

Fig 2: Control Unit And Screws

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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: Pressure 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: Pressure Sensor Contact Springs, Valve Coils And Gasket

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Installation note:

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

Replace screws.

Observe tightening sequence (1-4).

Tightening torque 34 51 1AZ .

Fig 5: DSC Control Unit Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out PROGRAMMING/ENCODING
STEERING ANGLE SENSOR ADJUSTMENT
Brake line mix-up test:
Function check of hydraulic unit