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:
Ultrasound sensors in the front/
rear bumpers
The ultrasound sensors of the
Park Distance Control PDC are located
in the bumpers.
Ultrasonic sensors, side
The ultrasound sensors of the Automatic Parking
Assistant are located on the side of the vehicle.
System limits of the ultrasonic
sensors
The de
Diagnosis and Information System (DIS)
Fig. 4: Identifying Diagnosis And Information System (DIS)
Necessary preliminary tasks:
Remove acoustic cover. Unfasten screws. Raise acoustic cover and remove
towards front.
Remove right ignition coil cover.
Connect DIS Tester.
Test:
Call up Diagnosi