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 ...