IMPORTANT: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification: Jointing torque and angle of rotation must be observed without fail (risk of damage) .
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .
Necessary preliminary work:
Detach all connectors from Power Distribution Module (1). Release wiring harness from bulkhead.
Disconnect plug connection (2).
Release screws (3) and lay wiring harness to one side.
Release screws (1).
Unclip upper part of cable channel (2) and expose the wiring harnesses.
Unlock all connectors (1) from control unit and disconnect.
Installation note: Make sure grommets are correctly fitted (watertightness).
Release screws (1) below cable channel (2).
Replace aluminum screws.
Release screws (1).
Release cable channel (2).
Installation note:
Reconnect the earth connection.
Replace aluminum screws.
Release wiring harness if necessary from existing clips and clamps.
Feed out wiring harness and remove.
Installation note:
Check wiring harness installation arrangement.
Check plug connections for correct fit.
Check stored fault message.
Delete fault memory.
BMW X3 Service & Repair Manual > Troubleshooting: Notes for opening contacts and locks of different plug contact systems
Special tools required:
61 0 300
61 0 400
61 1 100
IMPORTANT:
The contacts can be changed on ultrasonically welded connectors (1).
Ultrasonically welded connectors (1) must be replaced completely.
Ultrasonic-welded connectors (1) can be identified by the welds (2) on their ...