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:
Vehicle remote opening
If you have unintentionally locked your vehicle (e.g. the SmartKey is still in
the vehicle) and a replacement SmartKey is not available, the vehicle can be opened
by a Mercedes-Benz Customer Assis ...
Opening/closing the garage door
Once programmed, the integrated garage
door opener will assume the function of the
garage door system's remote control. Please
also read the operating instructions for the
garage door system.
...
Servicing the brakes
If the red brake warning lamp
lights up in
the instrument cluster and you hear a
warning tone while the engine is running,
the brake fluid level may be too low.
Observe additional warning me ...