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:
Snow chains
For safety reasons, Mercedes-Benz
recommends that you only use snow chains
which have been specially approved for your
vehicle by Mercedes-Benz, or are of a
corresponding standard of quality.
...
Deactivating/activating ESP® (AMG vehicles)
Activating/deactivating SPORT handling
mode
WARNING
The SPORT handling mode should not be
switched on during normal driving.
Switching on the SPORT handling mode will
result in the followin ...
The windshield wipers are inoperative
The windshield wiper drive is malfunctioning.
- Select another wiper speed on the
combination switch.
- Have the windshield wipers checked at a
qualified specialist workshop. ...