Mercedes-Benz E 2008 Series Owner's Manual page 308

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Problem
The auxiliary heating cannot be
switched on or off using the
remote control.
Parking up the vehicle
Problem
The vehicle is to be left parked up
for longer than six weeks.
Version: 2.9.4
Possible cause/consequence
The remote control display shows
FAIL and the ¢ symbol.
The signal transmission between
the remote control and the vehi-
cle is faulty.
The remote control display shows
FAIL and the ¡ symbol.
There is not enough fuel in the
tank, or the auxiliary heating is
faulty.
Possible cause/consequence
Damage resulting from non-use
may occur if the vehicle is parked
up for long periods.
Suggested solutions
Change your position in relation to the vehicle, moving closer if
X
necessary.
Make another attempt to switch the auxiliary heating on or off using
X
the remote control.
Refuel at the nearest filling station.
X
Have the auxiliary heating checked at a qualified specialist work-
X
shop.
Suggested solutions
Visit a qualified specialist workshop and seek advice.
X
Disconnect the battery ( page 331).
X
Y
Practical advice
Troubleshooting
Z
305