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:
WARNING: Danger of scalding!
Only perform this work after engine has cooled down.
IMPORTANT: Wear protective goggles and gloves.
Necessary preliminary tasks:
Follow instructions for working on cooling system.
Remove fan cowl.
Drain coolant.
Unlock coolant hoses and detach.
Release screws.
R
REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT CENTRAL BASS
SPEAKER
Necessary preliminary tasks:
Remove front seat
Lay floor carpet in working area to one side
Release screws (1) and remove trim (2).
Fig. 5: Identifying Trim With Screws
Disconnect plug connection (1).
Release screws (2) and fe