Problem
Possible causes/consequences and
M
Solutions
The indicator lamp on
the remote control
flashes red and green in
rapid succession.
There is no connection between the remote control and the receiver in
the vehicle.
X
Change your position in relation to the vehicle, e.g. hold the remote
control higher or to the side.
X
Move closer.
If you cannot make a connection and the auxiliary heating is switched
on, you can only switch off the auxiliary heating via the timer in the
vehicle (
Y
page 164).
The indicator lamp on
the remote control
flashes red and green in
rapid succession.
The remote control is not synchronised.
X
Have the remote control synchronised at a qualified specialist
workshop.
The indicator lamp on
the remote control
slowly flashes red and
green alternately.
The remote control is not synchronised.
X
Have the remote control synchronised at a qualified specialist
workshop.
The auxiliary heating sys-
tem switches off auto-
matically 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 filling station.
X
Subsequently, start the auxiliary heating several times until the fuel
lines are full.
The auxiliary heating sys-
tem switches off auto-
matically and/or cannot
be switched on.
The low-voltage protection system integrated in the control unit
switches off the auxiliary heating because the on-board voltage is
below 10 V.
X
Have the alternator and starter battery checked.
The auxiliary heating sys-
tem switches off auto-
matically and/or cannot
be switched on.
The fuse is malfunctioning.
X
Replace the fuse; see the "Fuse allocation" supplement.
X
Have the cause of the blown fuse determined at a qualified spe-
cialist workshop.
The auxiliary heating sys-
tem switches off auto-
matically and/or cannot
be switched on.
A malfunction has occurred.
X
Switch the ignition on and off twice.
If the auxiliary heating system still cannot be switched on, the heating
unit is faulty.
X
Have the auxiliary heating checked at a qualified specialist work-
shop.
The auxiliary heating is
overheated.
The air ducts are blocked.
X
Make sure that the flow of hot air behind and next to the left front
seat is not blocked.
X
Have the auxiliary heating checked at a qualified specialist work-
shop.
168
Operating the auxiliary heating system
Climate control
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