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:
General information
The windows can be opened with the vehicle
key from the outside as well as closed with Comfort
Access.
With Comfort Access: The windows can be
closed from the outside via Comfort Access.
When a window is often opened in the same position,
this task can be performed by the BMW
I
It is essential to comply with the regulations as specified in the law
relating to the use of explosives when
working on airbag units and seat belt tensioners.
Airbags, seat belt tensioners etc. are pyrotechnical objects. Pyrotechnical
objects are assigned to different
danger classes on the basis