Problems with the rear window
defroster
If the indicator lamp in the
ªrear window
defroster button flashes, the on-board
voltage is too low or the roof is open. The rear
window defroster has deactivated
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Activating/deactivating air-
recirculation mode
G
WARNING
At low outside temperatures, only switch over
to air-recirculation mode for brief periods.
Otherwise, the windows could fog up, thus
impairing visibility and endangering yourself
and others. This may prevent you from
observing the traffic conditions and thereby
cause an accident.
You can deactivate the flow of fresh air if
unpleasant odors are enteringt he vehicle
from outside. The air already inside the
vehicle will then be recirculated.
The operation of air-recirculation mode is the
same for all control panels.
X Turn the SmartKey to position 2in the
ignition lock.
X To activate: press thedbutton.
The indicator lamp in the dbutton lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or 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 thedbutton.
The indicator lamp in the dbutton goes
out.
i Air-recirculation mode is not deactivated
automatically at outside temperatures
above 26 †. Outside air is added after
about 30 minutes. 10
Air-recirculation mode is not deactivated
automatically at outside temperatures
above 79 ‡(26 †). Outside airi s added
after about 30 minutes. 11 Activating/deactivating the residual
heat function
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.
X To activate: press theÁbutton.
The indicator lamp in the Ábutton lights
up.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X To deactivate: press theÁbutton.
The indicator lamp in the Ábutton goes
out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
10 Vehicles with 3-zone automatic climate control.
11 Vehicles with 3-zone automatic climate control. Operating the climate control systems
143Climate control Z
If you have activated the delayed switch-off
function, the lights
witchis set to cor
à and you switch off the engine, the
following remain lit:
R Parking lamps
R License plate lamp
R Tail lamp
R Fog lamps 15
R Low-beam headlamps 16
R Side marker lamps
Activating/deactivating the interior
lighting delayed switch-off
If the Interior Lighting Delayed Shut- off function is activated and you remove the
SmartKey from the ignition lock, the interior
lighting remains on for approximately
10 seconds.
X Press the VorU button on the
steering wheel to select the Settingsmenu.
X Press the &button to call up the
selection of submenus.
X Press the WorX button to select the
Lighting submenu.
X Press the &button to select Interior Lighting Delayed Shut-off .
X Press the WorX button to activate
or deactivate Interior Lighting Delayed Shut-off .
X Press the &,VorU button to
select a different display.
Vehicle Activating/deactivating the automatic
door locking mechanism
X
Press the VorU button on the
steering wheel to select the Settingsmenu.
X Press WorX to select the Vehicle submenu. X
Press the &button to select
Automatic Door Locking .
X Press the WorX button to activate
or deactivate the Automatic Door Locking feature.
X Press the &,VorU button to
select a different display.
For further information on the automatic
locking feature, see (Y page 83).
Activating/deactivating the acoustic
locking verification signal
If you switch on the Acoustic Lock Feedback: function, an acoustic signal
sounds when you lock the vehicle.
X Press the VorU button on the
steering wheel to select the Settings menu.
X Press the &button to call up the
selection of submenus.
X Press WorX to select the Vehicle submenu.
X Press the &button to select Acoustic Lock Feedback .
X Press the WorX button to switch
the Acoustic Lock Feedback function
on/off.
X Press the &,VorU button to
select a different display.
Activating/deactivating the radar sensor
system
X Press the VorU button on the
steering wheel to select the Settings menu.
X Press the &button to call up the
selection of submenus.
X Press WorX to select the Vehicle submenu.
X Press the &button to select Radar Sensor (See Operator's Manual) .
15 Only for vehicles with front fog lamps.
16 Only for vehicles without front fog lamps. Menus and submenus
209On-board computer and displays Z
