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
General information
When using run-flat tires or a flat tire kit, a wheel
does not always need to be changed immediately
when there is a tire pressure loss due to a
flat tire.
If needed, the tools for changing wheels are
available as accessories from a dealer's service
center or another qualified s