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:
Minimum set: Mechanical tools
Note: For straightening and assembly jobs on vehicle bodies, e.g. fitting
trim panels, removing window
weatherstrips, repairing small-scale dents, removing residual adhesive
materials, measuring gap widths,
levering out trim panel parts
Series: E12, E21, E23, E24, E28
IMPORTANT: Conform with safety precautions !
The bonding surfaces must be kept free of all types of dirt and
contamination. Avoid leaving fingerprints.
Cleanliness is the golden rule for all bonds!
Cleaning agent: Isopropanol, acetone or spirit
Expiry date of adhesive and primer
The adhesiv