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. See 12 1 200 TORQUE
LIMITER 30 NM.
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: US/CDN front passenger seat (with OC3 mat) only:
The padding can only be removed in conjunction with the OC3 mat.
If padding is defective, both parts may only be replaced together. After fitting
new padding, enable OC3 mat with BMW diagnosis system.
The operation for removing the padding
Depending on the situation, the vehicle is in one
of the three states:
Idle state.
Standby state.
Drive-ready state.
Idle state
Principle
When the vehicle is in idle state, it is switched
off.
General information
The vehicle is in idle state prior to opening from
the outside and after exiting a