Necessary preliminary work:
Fold back cover (1).
Release nut underneath.
Remove positive battery cable from battery positive terminal.
Release positive battery lead(1) from acoustic cover (3).
Slacken nut (1).
Disconnect positive battery cable from alternator.
Release positive battery lead from retainer (2).
Release retainers (1) and detach positive battery lead from guide.
Release nut (1) on starter motor.
Disconnect positive battery cable from starter motor.
Release positive battery cable from retainers (2).
Feed out positive battery cable and remove.
NOTE: Reassemble the vehicle.
Check stored fault messages.
Delete fault memory.
BMW X3 Owners Manual > PDC Park Distance Control: Switching on/off
Switching on automatically
PDC switches on automatically in the following
situations:
If selector lever position R is engaged
when the engine is running.
The rearview camera also switches on.
If equipped with front PDC: when obstacles
are detected behind or in front of the
vehicle ...