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:
High-beam spot lamp (vehicles with halogen daytime running lamps)
Switch off the lights.
Open the hood.
Turn housing cover 1 counter-clockwise
and pull it out.
Turn bulb holder 2 counter-clockwise and
pull it out.
Take the bulb out of bulb holder 2.
...
Problems with the steering wheel
heating
The steering wheel heating has switched off
prematurely or cannot be switched on. The
vehicle's electrical system voltage is too low
because too many electrical consumers are
switched on.
- S ...
Drive sensibly – save fuel
Observe the following tips to save fuel:
The tires should always be inflated to the recommended tire pressure.
Remove unnecessary loads.
Remove roof racks when they are not needed.
Warm up t ...