Problems with the auxiliary heating/ventilation
Display messages Possible causes/consequences and
M Solutions$
FAIL The signal transmission between the transmitter and the vehicle
is faulty.
X
Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control. ©
FAIL There is too little fuel in the fuel tank.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control. The auxiliary heating is faulty.
X
Have the auxiliary heating checked at a qualified specialist
workshop. FAIL The auxiliary heating cannot be switched on or has switched itself
off.
The
auxiliary heating was started more than twice when the engine
was switched off.
X Switch on the engine and let it run for more than ten seconds.
X Make another attempt to switch on the auxiliary heating using
the remote control. The auxiliary heating cannot be switched on or has switched itself
off.
The starter battery is not sufficiently charged.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating using
the remote control.138
Operating the climate control system
Climate control
Display messages Possible causes/consequences and
M SolutionsThe auxiliary heating cannot be switched on or has switched itself
off.
There is too little fuel in the fuel tank.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating using
the remote control. The auxiliary heating cannot be switched on or has switched itself
off.
The auxiliary heating is faulty.
X
Have the auxiliary heating checked at a qualified specialist
workshop. Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the vents or ventilation grilles
in the vehicle interior.
i Move the adjusters for the air vents ver-
tically or horizontally, to set the direction of
the airflow.
i Optimal climate control function is ach-
ieved by opening the air vents fully and set-
ting the adjusters to the middle position. Setting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents : anti-
clockwise.
X To close the centre air vent: turn the
adjuster
in one of centre air vents : clock-
wise until it engages. Adjusting the air vents
139
Climate control Z
X
Press the 9 or : button to select
Radar sensor (See Owner's Man.).
You will see the selected setting: Activa‐
ted or Deactivated.
X Press the a button to save the setting.
i In some countries you must deactivate
the radar sensor system. For further infor-
mation, see ( Y page 350).
If the radar sensor system is switched off,
Blind Spot Assist is deactivated
(Y page 197).
Heating Changing the departure time
X
Press the = or ; button on the steer-
ing wheel to select the Settings menu.
X Press the : or 9 button to select
theHeating submenu.
X Press a to confirm.
You will see the selected setting.
X Press a to confirm.
X Press the : or 9
button to select A,
B or Change C.
X Press a to confirm.
You can now change the departure time.
X Press the =
or ; button to select the
display to be changed: hours, minutes.
X Press the : or 9 button to set the
selected display.
X Press the a button to store the entry.
The yellow indicator lamp on the auxiliary
heating button lights up.
Selecting the departure time or deactivat-
ing a selected departure time
X Press the =
or ; button on the steer-
ing wheel to select the Settings menu.
X Press the :
or 9 button to select the
Heating submenu.
X Press a to confirm.
You will see the selected setting.
X Press a to confirm. X
Press : or 9 to select one of the
three departure times or Timer off (no
timer active).
X Press a to confirm.
If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary
heating button.
Changing the departure time
Only vehicles with auxiliary heating
(Y page 134) have this function.
In the Heating submenu, you can select a
stored
departure time or change a departure
time.
The auxiliary heating timer function calcu-
lates the switch-on time according to the out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for a further five
minutes and then switches off. The auxiliary
heating adopts the THERMATIC or
THERMOTRONIC temperature setting.
You can switch off the auxiliary heating by
using the remote control or the auxiliary heat-
ing button on the centre console. G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed
spaces which do not have an extrac-
tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To
guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from
the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot. 224
Menus and submenus
On-board computer and displays
