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:
Necessary preliminary tasks:
Remove front seat.
Remove both rear panels.
Remove inner cover.
Remove active head restraint support.
Bend shaft (1) in direction of arrow.
Pull shaft (1) out of gear (2) and remove.
Fig. 99: Pulling Shaft
REMOVING AND INSTALLING/REPLACING GEARING FOR HEAD REST
In the vicinity of the steering
wheel
Light switch element
Turn signal indicator, high beams
Instrument cluster
Wipers
Indicator/warning lights
The indicator/warning lights can light up in a variety
of combinations and colors.
Several of the lights are checked for proper functioning
and ligh