REPLACING PREHEATING CONTROL UNIT (N47D20 O1)
Necessary preliminary tasks:
Release positive battery cable (1) from clamp.
Release expanding rivets (2).
Remove rear acoustic cover (3).
Detach connector (1) from preheating control unit.
Release screw (2).
Remove preheating control unit (3).
NOTE: If the preheating control unit is replaced, the preheating control service function must be performed using the diagnosis system after it is replaced.
Installation note: Assemble engine.
BMW X3 Service & Repair Manual > Starter lead: Replacing battery positive lead between starter, alternator and battery
positive terminal (N52T)
Necessary preliminary work:
Read out the fault memory of the DME control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD .
Remove intake plenum.
Fold back cover (1).
Release nut underneath. Remove positive battery cable from positive battery connection point.
Release batt ...