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:
REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE
IMPORTANT: Observe safety when raising the vehicle.
Driving without reinforcement plate is not permitted!
Release bolts (1) for assembly underside protection at front.
Release bolts (2).
Remove reinforcement plate (3).
Installation:
Replace sc
WARNING: See DANGER OF POISONING IF OIL IS INGESTED/ABSORBED
THROUGH THE SKIN and 00 RISK OF INJURY IF OIL COMES INTO
CONTACT WITH EYES AND SKIN.
IMPORTANT: Risk of damage!
To avoid serious damage to the rear differential, it is essential to
use only
approved transmission oils in the rear different