34 51 527 Removing and installing/replacing DSC hydraulic unit

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Read and comply with GENERAL INFORMATION .
Remove SOUND INSULATION BULKHEAD upper part, center.
Draw off brake fluid.

Only with F80, F82:

Remove tension strut on spring strut dome.

NOTE: Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.

After completing repair work:

Bleed BRAKING SYSTEM
Brake line mix-up test:

IMPORTANT: Do not mix up brake lines.
If necessary, mark before removal.
Close off connecting bores with seal plugs.

IMPORTANT: Remove and/or loosen the following holders for better movement of brake lines!

Remove holder for brake lines (1).

Detach the brake lines (2) from the rubber grommet.

Fig 1: Identifying Brake Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Detach brake line (1) from holder.

Disconnect plug connection (2).

Unfasten brake lines (3).

Installation note:

Tightening torque: 34 32 1AZ .

Fig 2: Identifying Brake Lines And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (4) and feed out hydro aggregate in upward direction.

IMPORTANT: Brake lines must not be bent!

Installation note:

Tightening torque: 34 51 5AZ .

When replacing hydraulic unit:

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

Installation note:

Tightening torque: 34 51 4AZ .

Modify DSC CONTROL UNIT .

Fig 3: Identifying Hydraulic Unit Convert Holder And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

When replacing control unit:

Carry out programming/encoding
Adjustment of steering angle sensor