Mercedes-Benz A Series 2015 Owner's Manual page 151

Operating the climate control system
148
Switching on/off
Turn the key to position 0 in the ignition
X
lock or remove it (
To activate: press the Ì button.
X
The indicator lamp in the Ì button lights
up.
To deactivate: press the Ì button.
X
The indicator lamp in the Ì button goes
out.
i
Residual heat is deactivated automati-
cally:
after approximately 30 minutes
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when the ignition is switched on
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if the battery voltage drops
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when the auxiliary heating is switched on
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Auxiliary heating
Important safety notes
DANGER
G
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac-
tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To
guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from
the wind.
G WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
page 157).
Y
Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
hot parts of the exhaust system
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the exhaust gas itself
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There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
no flammable materials come into contact
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with hot vehicle components
the exhaust gas can escape from the
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exhaust pipe unhindered
the exhaust gas does not come into contact
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with flammable materials.
The auxiliary heating and the exhaust gas out-
let are situated in front of the right-hand front
wheel.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
Switch the auxiliary heating on regularly once
a month for about ten minutes.
The auxiliary heating timer function calcu-
lates the switch-on time according to the out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for a further five
minutes and then switches off.
The auxiliary heating heats the air in the vehi-
cle interior to the set temperature. This
occurs without using the heat of the running
engine. The auxiliary heating is operated
directly using the vehicle's fuel. For this rea-
son, the fuel tank must be at least Õ full to
ensure that the auxiliary heating functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode
to ventilation mode.