BMW maintenance system
The maintenance system provides service notifications
and thereby provides support in maintaining
road safety and the operational reliability
of the vehicle.
In some cases, scopes and intervals of the maintenance
system may vary according to the country
version. Replacement w
REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200
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 171an