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:
Display
General information
The display is divided into the upper status line,
the information area, and the lower status line.
Upper status line
The upper status line displays the following information:
Vehicle secured/vehicle
unsecured.
Set time in the vehicle.
Charge state of the display
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Remove design cover, if equipped.
Unfasten acoustic cover screws. Raise acoustic cover and remove towards
front.
Remove ignition coil cover
NOTE: For purposes of clarity, the following work steps are shown on
the engine after
it has been re