BMW X5: Ignition Wires, Spark
REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
Necessary preliminary tasks:
- Switch off ignition
- Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171and special tool 12 1 200
(torque limiter).
Without special tool 12 1 200, observe tightening torque.
Tightening torque 12 12 1AZ0.

Fig. 1: Identifying Special Tool (12 1 171) And (12 1 172)
READ NEXT:
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting -> Fault in fuel injection system
-> Spark plug faults
-> Ignition coil faults
-> Further fault patterns with evaluation
-> Additional
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
IMPORTANT: Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of ele
SEE MORE:
REPLACING DESIGN COVER/ACCENT TRIM FOR SPORT STEERING WHEEL
Necessary preliminary tasks:
Remove both switches from sport steering wheel.
Release screws (1).
Remove accent rim (2) from design cover (3).
Fig. 59: Identifying Accent Rim, Design Cover And Screws
REMOVING AND INSTALLING/REPLACING ST
Special tools required:
52 0 050.
Necessary preliminary tasks:
Remove right backrest cover.
Remove head restraint guides.
Remove backrest actuator trim and lock trim.
Lever out welt in marked area.
Fig. 181: Identifying Welt Marked Area
Detaching cover and padding:
Release all retainers