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:
Drain automatic transmission fluid at oil drain plug.
Tightening torque.
IMPORTANT: After completion of work, program transmission control unit.
Recycling:
Catch and dispose of escaping transmission fluid.
Observe country-specific waste-disposal regulations.
IMPORTANT:
Before installing replace
General information
The driver's door can be locked and unlocked
without the vehicle key using the integrated key.
Depending on the national-market version, the
integrated key also fits the glove compartment.
Safety information
Warning
For some country versions, unlocking from the
inside is only po