3452516 Removing and installing/replacing DSC control unit

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

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

Necessary preliminary tasks

Remove HYDRAULIC UNIT

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

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

Fig 1: Identifying Front Brake Control Unit And Screws

G04726704

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Replace all seals in area (1).

Fig 2: Identifying Seals Area

G04726705

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Keep sealing faces clean.

Replace screws.

Observe tightening sequence (1-4).

Tightening torque 34 51 1AZ, see 34 51 SLIP CONTROL SYSTEM (DSC) . .

Fig 3: DSC Control Unit Bolts Tightening/Loosening Sequence

G04726706

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out programming/encoding
STEERING ANGLE SENSOR ADJUSTMENT
or

ADJUSTMENT FOR ACTIVE STEERING
Brake line interchange check:
Function check, hydraulic unit