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:
Principle
Turning on drive-ready state corresponds to
starting the engine.
General information
Some functions, such as DSC Dynamic Stability
Control, can only be used with drive-ready state
switched on.
Safety information
DANGER
If the exhaust pipe is blocked or ventilation is insufficient,
harmful
Principle
The exterior lighting is switched on automatically
when approaching or unlocking the vehicle.
General information
Depending on the equipment, the exterior lighting
of the vehicle can be set individually.
Activating/deactivating welcome
light
1. "CAR".
2. "Settings".
3. "Exterior lighting