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Home >> BMW >> 2007 >> 323i Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair - E90/E91 >> 52 Electronic components >> 34 52 516 Removing and installing/replacing DSC control unit (N52 / N52K / N53 / N54)

34 52 516 Removing and installing/replacing DSC control unit (N52 / N52K / N53 / N54)

Necessary preliminary tasks: 

Replacement: 

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

IMPORTANT: Risk of damage to the contacts when removing and installing the hydraulic unit.
Fig 1: Identifying Control Unit And Retaining Screws
G04726704Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Replace all seals in area (1).
Fig 2: Identifying DSC Control Unit Seals
G04726705Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Keep sealing faces clean.

Replace screws.

Observe tightening sequence (1-4).

For tightening torque refer to 34 51 1AZ in 34 51 SLIP CONTROL SYSTEM (DSC) .

Fig 3: DSC Control Unit Bolts Tightening/Loosening Sequence
G04726706Courtesy of BMW OF NORTH AMERICA, INC.