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:
Fig. 2: Identifying Air Brakes Vacuum Supply Models
INTRODUCTION
Vacuum is principally used for the brake booster.
The vacuum in the inlet pipe depends on the varying engine load.
Diesel engines do not normally have any vacuum in the inlet pipe. Vacuum on
diesel engines is provided by a
pump tha
Special tools required:
23 0 490
27 1 460 DRIFT
IMPORTANT: After completing work, check gear oil level, see
Replenishing /Changing
Transfer Case Oil (ATC 700) and top up if necessary.
Use only approved gear oil in this transfer box.
Necessary preliminary tasks:
Remove transfer box
Drive a h