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:
Release connector (1) and remove.
Release screw.
Remove pulse sensor (2).
NOTE: Check stored fault message.
Delete fault memory.
BMW X3 Service & Repair Manual > Ignition wires, spark plugs: Removing and installing/renewing all spark plugs (N55)
Special tools required:
12 1 220
12 1 230
Necessary preliminary tasks:
Switch off ignition.
Remove IGNITION COILS.
IMPORTANT:
Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
1. Remove dirt contamination f ...