Activating/deactivating airrecirculation mode
WARNING
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press the
button.
► Turn the SmartKey to position 2 in the ignition lock.
► To switch on: press the 
button.
The indicator lamp in the 
button
lights
up.
Air-recirculation mode is automatically activated at high levels of pollution or at high outside temperatures. When airrecirculation mode is activated automatically, the indicator lamp in the d button is not lit.
Outside air is added after approximately 30 minutes.
► To deactivate: press the 
button.
The indicator lamp in the 
button
goes
out.
Air-recirculation mode switches off
automatically:
• after approximately five minutes at
outside temperatures below approximately 41 º F
• after approximately five minutes if
cooling with air dehumidification is
deactivated
• after approximately 30 minutes at
outside temperatures above
approximately 41 º F (5 º C)
See also:
Towing and tow-starting
Important safety notes
WARNING
If you tow the vehicle, you must use a rigid
towing bar if:
- the engine is not running.
- there is a brake system malfunction.
- there is a malfunction in the po ...
Service and literature
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Center will
exchange or repair any defective parts
...
Underinflated or overinflated ti
Underinflation
WARNING
Tires with pressure that is too low can
overheat and burst as a consequence. In
addition, they also suffer from excessive and/
or irregular wear, which can severely impair
...