Problems with the cooling with air dehumidification function
When you press the 
button, the
indicator lamp in the button flashes three
times or remains off. You can no longer switch
on the cooling with air dehumidification
function.
Consult a qualified specialist
workshop.
See also:
Engine
Display messages
Possible causes/consequences and
Solutions
The coolant level is too low.
Add coolant, observing the warning notes when doing so.
If coolant nee ...
Driving tips
Observe the information on ESP® trailer
stabilization (Y page 64) and on pulling
away with a trailer.
The maximum permissible speed for vehicle/
trailer combinations depends on the type of ...
Digital speedometer
– Press the or
button on the
steering wheel to select the Trip menu.
– Press or
to select the digital
speedometer.
1 Digital speedometer ...