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 p
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Fuel systems need to be checked for proper fuel pressure as well as
sufficient volume. When diagnosing fuel
system complaints, you must take into account the type of fuel system and how
the fuel is delivered to the
engine.
Malfunctions in the fuel system can cause driveability complaints which in
Control Display
Hazard warning system
Intelligent Safety
Ventilation
Glove compartment
Automatic climate control
Radio/multimedia, see Owner's Manual for
Navigation, Entertainment, and Communication
Controller with buttons
Two-axle ride level control
xOffroad driving mode
HDC Hill Des