Owners Manual

Problem Possible causes/consequences and M Solutions
The speed cannot be
set when cruise control
is activated
7
.
The display is showing a message of high priority and cannot
therefore show a change in speed.
X
Proceed as instructed by the message in the display.
X
Deactivate cruise control
White stripes appear on
the rear view camera's
monitor display or the
picture flickers.
The rear view camera is exposed to very bright white light or
fluorescent light.
X
Check whether the rear view camera works at another location.
The rear view camera is
functioning incorrectly
or not at all.
R
The surrounding area is very dark.
R
The outside temperature has changed rapidly or is very high.
R
The camera lens is dirty or obstructed.
X
Check the rear view camera and clean the camera lens if
necessary (Y page 166).
Auxiliary heating
G
WARNING
If service work is not carried out correctly, the operating safety of your vehicle may be affected.
This could cause you to lose control of your vehicle and cause an accident. Moreover, the safety
systems may no longer be able to protect you or others as they are designed to do.
Always have service work carried out at a qualified specialist workshop.
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
automatically and/or
cannot be switched on.
Lack of fuel
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.
The auxiliary heating
switches off
automatically and/or
cannot be switched on.
The undervoltage protection 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.
7
Only on vehicles with steering wheel buttons.
Troubleshooting
219
Practical advice
Z