Mercedes-Benz E-Class Saloon Owner's Manual page 330

Display messages
j
Check trailer Check trailer
hitch lock hitch lock
&
inoperative Bat‐ inoperative Bat‐
tery low tery low
&
inoperative Refuel inoperative Refuel
vehicle vehicle
&
inoperative See inoperative See
Owner's Man. Owner's Man.
Ð
Power steering Power steering mal‐ mal‐
function See Own‐ function See Own‐
er's Manual er's Manual
Possible causes/consequences and M M Solutions
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.
Stop the vehicle immediately, paying attention to road and traf-
X
fic conditions, and switch off the engine.
Apply the parking brake.
X
Engage the trailer coupling's ball coupling in the end position
X
( page 268).
Y
the on-board voltage is too low The auxiliary heating has switched
itself off or cannot be switched on (
Drive for a considerable distance.
X
The battery charges. The auxiliary heating is operational again as
soon as the on-board electrical system voltage is sufficient.
There is too little fuel in the fuel tank. The auxiliary heating cannot
be switched on ( page 168).
Y
Refuel at the nearest filling station.
X
The auxiliary heating is temporarily malfunctioning or faulty.
When the vehicle is on a level surface and the engine has cooled
X
down, make up to four attempts to switch on the auxiliary heat-
ing, waiting several minutes between each attempt
( page 168).
Y
If the auxiliary heating does not switch on, consult a qualified
X
specialist workshop.
The power steering assistance is faulty.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
Check whether you are able to apply the extra force required.
X
If you are able to steer safely: carefully drive on to a qualified
X
specialist workshop.
If you are unable to steer safely: do not drive on. Contact the
X
nearest qualified specialist workshop.
Display messages
page 168).
Y
327
Z