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:
Special tools required:
00 9 340
Using special tool 00 9 340 , unclip trim (1) on both sides.
Fig. 43: Identifying Special Tool (00 9 340)
Unclip trim (1) with special tool 00 9 340 and remove.
Replacement:
Trims may only be replaced in pairs so as to avoid differences in color.
Fig. 44: Identi
Necessary preliminary tasks:
Remove Central Information Display.
Carefully release catches (1).
Installation:
Catches (1) must not be damaged.
Fig. 35: Identifying Catches
Carefully raise trim (2).
Disconnect plug connection (1) and remove trim (2) from CID.
Fig. 36: Identifying Plug Connectio