Air quality
General information
The air quality in the interior is improved by the
following components:
Emission tested passenger compartment.
Interior filter.
Air conditioning system to control
AUTO program
Principle
The AUTO program cools, ventilates or heats
the car's interior automatically.
The air distribution and the temperature are controlled
automatically depending on the interior
tem
Principle
The air flow directions can be adjusted individually
for direct or indirect ventilation.
Setting the ventilation
General information
Open the air vents and position them to ensure
effective
Necessary preliminary tasks:
Remove decorative strip from middle fresh-air grille.
Unlock catches (1).
Press switch (2) out of decorative strip.
Fig. 212: Pressing Switch Out Of Decorative Strip
REMOVING AND INSTALLING OR REPLACING GRIP TRIM FOR GEAR SELECTOR
SWITCH
Special tools required:
64
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubleshooting
Oscillograms
Normal oscillogram
Oscillograms of ignition coils from different manufactur