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 fresh-air grille in rear cabin.
Remove trim from rear cabin monitor base at front.
Release screws (1) and remove rear cabin monitor with holder (2).
Disconnect associated plug connections and feed out leads.
Tightening torque.
Fig. 39: Identifying Rear Ca
Principle
The system additionally supports the driver when
changing lanes on multilane roads.
General information
The system uses the sensors of the steering and
lane control assistant.
Safety information
Warning
The system cannot serve as a substitute for the
driver's personal judgment in assessing