Programming the function
One-Time
1.
Highlight One-Time and press
the right arrow button.
2.
Press the OK button and the
hours flash. Use the up and down
arrow buttons to adjust the
individual settings and the left and
right arrow buttons to move to the
next or previous setting.
3. When you have finished, press the
OK button again to confirm the
selection.
Active now
Highlight Active now and press the
OK button. A cross appears in the
box next to the function to show that
the heater is activated.
To deactivate the heater, highlight
Active now and press the OK
button again.
Diesel auxiliary heater
(depending on country)
The diesel auxiliary heater (PTC
electrical heater) aids in warming the
engine and the vehicle interior on
vehicles with a diesel engine. It is
switched on or off automatically
depending on the outside air
temperature, the coolant
temperature and the alternator load.
Fuel operated heater
(depending on country)
The fuel operated heater aids in
warming the engine and the vehicle
interior on vehicles with a petrol or
diesel engine. It is switched on or off
automatically depending on the
outside air temperature and the
coolant temperature, unless you
have deactivated it. When the fuel
operated heater is operating, Aux.
Heater on is displayed in the
information display. See
Information displays (page 87).
To deactivate the fuel operated
heater:
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