Mercedes-Benz 2011 GL-Class Operator's Manual page 144

Setting the air vents
142
X
Turn the SmartKey to position 2 in the
ignition lock.
X
To activate: press the d button.
The indicator lamp in the d button lights
up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. When air-recirculation mode
is activated automatically, the indicator
lamp in the d button is not lit.
Outside air is added after about 30
minutes.
X
To deactivate: press the d button.
The indicator lamp in the d button goes
out.
Air-recirculation mode switches off
i
automatically:
after approximately five minutes if
R
outside temperatures are under about
41 ‡ (5 †)
after approximately five minutes if
R
cooling with air dehumidification is
deactivated
after approximately 30 minutes if outside
R
temperatures are over about
41 ‡ (5 †)
i The air-recirculation mode does not
switch off automatically if outside
temperatures exceed 79 ‡ (26 †). After
about 30 minutes, outside air will be
22
added.
Switching the residual heat on/off
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
22 Vehicles with multi-zone automatic climate control.
i If you activate the "residual heat" function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X
Turn the SmartKey to position 0 in the
ignition lock or remove it.
X
To switch on: press the Á button.
The indicator lamp in the Á button lights
up.
X
To switch off: press the Á button.
The indicator lamp in the Á button goes
out.
Residual heat is deactivated
i
automatically:
after about 30 minutes
R
when the ignition is switched on
R
if the battery voltage drops
R
if the coolant temperature is too low
R
Setting the air vents
Important safety notes
G
Warning
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.