Display messages
Possible causes/consequences and
M
M
Solutions
j
Check
Check trailer
trailer hitch
hitch
lock
lock
The trailer tow hitch is not correctly engaged.
A warning tone also sounds.
G
WARNING
If the ball coupling is not engaged, the trailer may come loose. There
is a risk of an accident.
X
Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X
Safeguard the vehicle against rolling away (
Y
page 172).
X
Engage the trailer coupling's ball coupling in the end position
(
Y
page 228).
&
Function available
Function available
again after engine
again after engine
start
start
Vehicles with the BlueEFFICIENCY package:
With the engine switched off, you have attempted to switch on remote
activation of heating and ventilation systems more than three times.
X
Let the engine run for ten seconds.
After running the engine, the pre-entry climate control is opera-
tional again.
&
inoperative
inoperative Battery
Battery
low
low
the on-board voltage is too low.
The auxiliary heating (
Y
page 138) has switched itself off. The auxiliary
heating or remote activation of heating and ventilation systems can-
not be switched on.
X
Drive for a considerable distance.
The battery charges. The auxiliary heating or remote activation of
heating and ventilation systems is operational again as soon as the
on-board electrical system voltage is sufficient.
&
inoperative Refuel
inoperative Refuel
vehicle
vehicle
There is too little fuel in the fuel tank. The auxiliary heating cannot be
switched on (
Y
page 138).
X
Refuel at the nearest filling station.
&
inoperative
inoperative See
See Own‐
Own‐
er's Man.
er's Man.
The auxiliary heating is temporarily malfunctioning or faulty.
X
When the vehicle is on a level surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heating,
waiting several minutes between each attempt (
Y
page 138).
If the auxiliary heating does not switch on:
X
Consult a qualified specialist workshop.
282
Display messages
On
-b
oar
dc
omp
ut
er
an
dd
ispla
ys