BMW X3 Service & Repair Manual > Engine wiring loom: Removing and installing/replacing engine sensor system module 2 wiring
harness (N20)
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DISCHARGE (ESD PROTECTION) .
Necessary preliminary tasks:
Read out the fault memory of the DME control unit.
Switch off ignition.
Remove intake PLENUM .
Release the COOLANT THERMOSTAT and set on the side ...