Problems with the auxiliary warm-air heater
Problem
Possible causes/consequences and M Solutions
The auxiliary heating
does not switch on.
The outside temperature is above 39 ‡ (4 †). The auxiliary heating
switches off automatically.
The auxiliary heating
switches off automati-
cally and/or cannot be
switched on.
The fuel tank is less than Õ full. The auxiliary heating switches off
automatically.
X
Refuel at the nearest gas station.
X
Then, start the auxiliary heating several times until the fuel lines are
full.
or
The low-voltage protection system integrated in the control unit
switches off the auxiliary heating because the on-board voltage is less
than 10 V.
X
Have the alternator and battery checked.
or
The fuse is blown.
X
Replace the fuse; see the "Fuse allocation" supplement.
X
Have the cause of the blown fuse determined at a qualified spe-
cialist workshop.
Operating the cargo compartment air
vents
If your vehicle is equipped with a roof ventilator,
you can ventilate and extract air from the cargo
compartment.
X
Turn the key to position 2 in the ignition lock.
X
To activate and extract air: press the upper
section of the ´ switch.
The roof ventilator removes used air from the
cargo compartment.
X
To activate and ventilate: press the lower
section of the · switch.
The roof ventilator feeds fresh air into the
cargo compartment.
X
To switch off: set the switch to the middle
position.
Operating the cargo compartment air vents
117
Climate control
Z
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