34 51 527 Removing and installing/replacing DSC hydraulic unit

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read and comply with GENERAL INFORMATION .

After completing repair work:

BLEED BRAKE SYSTEM .

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

Press brake pedal down to floor and secure with pedal support.

NOTE: The brake pedal may only be released when the brake lines are reconnected. This prevents brake fluid from emerging from the expansion tank when the brake lines are opened.

Fig 1: Pressing Brake Pedal Down To Floor

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Disconnect plug connection (1).

Unfasten brake lines (1).

Installation note:

Tightening torque 34 32 1AZ .

Undo screw (3) and remove hydraulic unit upwards in direction of arrow

Installation note:

Tightening torque 34 51 4AZ .

Fig 2: Removing Hydraulic Unit

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

Installation note:

Tightening torque 34 51 4AZ .

Fig 3: Identifying Holder With Screws

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If the control unit is replaced:

Carry out programming/encoding.