BMW X3 (F25) Service & Repair Manual: Electrical components

• Removing and installing/replacing control unit for vertical dynamic control
• Replacing front ride-height sensor
• Replacing left or right wheel speed accelerator sensor
• Replacing rear ride-height sensor

Removing and installing/replacing control unit for vertical dynamic control

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

Necessary preliminary tasks:

• Remove ignition key.
• Disconnect BATTERY NEGATIVE CABLE .
• Remove FLAP IN LUGGAGE COMPARTMENT TRIM PANEL ON RIGHT .

Undo screw (1), release expanding rivets (2) and remove storage compartment.

Unscrew nuts (1).

Unlock connector (2) and remove.

Remove control unit.

After installation:

• Replacement only: Carry out PROGRAMMING/ENCODING .
• Start up the VDM with the aid of the diagnosis system.
• Replacement only: Carry out RIDE HEIGHT ADJUSTMENT.

Replacing front ride-height sensor

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

Release nut (1) and disconnect jointed rod (2).

Unfasten screws (2).

Remove ride-height sensor and disconnect plug connection.

After installation:

• Carry out RIDE-HEIGHT ADJUSTMENT (on vehicles with VDC).
• Check HEADLIGHT SETTING , correct if necessary.

Replacing left or right wheel speed accelerator sensor

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

Disconnect plug connection (1) from acceleration sensor on the spring strut.

Release screw (1) and remove sensor.

Installation note:

Check installation position.

Fit wheel speed acceleration sensor with retaining pin (1) into bore hole on the spring strut holder!

After installation:

• Use the diagnosis system to perform the wheel speed accelerator sensor adjustment.

Replacing rear ride-height sensor

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

Disconnect connector connection.

Release nut (1) and disconnect jointed rod.

Release screws (2) and remove ride-height sensor.

After installation:

• Check HEADLIGHT SETTING , correct if necessary.
• Carry out RIDE-HEIGHT ADJUSTMENT (on vehicles with VDC).