Necessary preliminary tasks:
IMPORTANT: Disc wheels are not allowed to be repaired!
Mount disc wheel in balancing machine.
Use suitable wheel centering element supplied with corresponding balancing machine.
Place dial gauge sensor on rim shoulder.
Turn wheel by hand and measure max. radial runout .
NOTE: Dial gauge must be vertical to rim shoulder.
Position sensor on rim flange.
Turn wheel by hand and measure max. lateral runout .
Carry out measurement on both rim flanges.
NOTE: Dial gauge must be vertical to rim flange.
IMPORTANT: Avoid clamping errors during subsequent installation work.
BMW X3 Service & Repair Manual > Electronic switching or control units: Replacing (dde) control unit (N47 D20 O1)
IMPORTANT:
Read and comply with NOTES on protection against electrostatic damage (ESD protection).
Necessary preliminary work:
Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
FOLLOW INSTRUCTIONS FOR REMOVING AND INSTALLING CO ...