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

BMW X3 (F25) Service & Repair Manual / Suspension / Electrical components

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.

Suspension

Unscrew nuts (1).

Unlock connector (2) and remove.

Remove control unit.

Suspension

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.

Suspension

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.

Suspension

Installation note:

Check installation position.

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

Suspension

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.

Suspension

After installation:

  • Check HEADLIGHT SETTING , correct if necessary.
  • Carry out RIDE-HEIGHT ADJUSTMENT (on vehicles with VDC).
Rear control and suspension elements
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Electronic damping force adjustment
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Other materials:

BMW X3 (F25) Service & Repair Manual > Driveline+Axles: Spring with suspension
MEASURING VEHICLE RIDE HEIGHT Determine actual ride height (A) - to do so, attach tape measure to rim flange (2) at bottom middle and measure to wheel arch lower edge (1). REMOVING AND INSTALLING/REPLACING COIL SPRING FOR FRONT LEFT OR FRONT RIGHT SPRING STRUT Special tools required: 31 3 ...