34 52 516 Removing and installing/replacing DSC control unit

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

Necessary preliminary tasks:

Removal:

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

Fig 1: Locating DSC Control Unit Holder 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 front.

Fig 2: Locating DSC Control Unit Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Preparation for installation:

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: Locating DSC Control Unit Sealing Surface

Courtesy of BMW OF NORTH AMERICA, INC.

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

Check gasket (2) for damage. If damaged, replace DSC control unit (3).

Fig 4: Locating Valve Coils Of DSC Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Installation note:

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

Fig 5: Locating DSC Control Unit Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replace screws.

Observe tightening sequence (1-3).

Tightening torque 34 51 1AZ .

Fig 6: Locating DSC Control Unit Holder Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Attach holder (2).

Insert screws (1) and tighten.

Tightening torque 34 51 2AZ .

Replacement: