Page 104 of 219

102Instruments and controlsDrain diesel fuel filter
If there is water in the diesel fuel filter, the message InSP4 appears in the
instrument panel. Consult a
workshop.
Lighting
Important exterior lights, including cables and fuses, are monitored. In
trailer mode, trailer lighting is also
monitored. Trailers with LED lighting
must have an adapter that enables
light monitoring as with conventional
bulbs.The failed lighting will be indicated in
the information display or the
message InSP2 will appear in the
instrument panel display.
Anti-theft alarm system
System fault in anti-theft alarm
system. Have the cause of the fault
remedied by a workshop.
Tyre pressure
On vehicles with tyre pressure
monitoring system, if there is low tyre pressure, information which tyre to
check appears on the display.
Reduce speed and check tyre
pressure at the next opportunity. Tyre
pressure monitoring system 3 176.
Check tyre pressure 3 175, 3 206.
If there is a considerable loss of
pressure, a corresponding message
appears indicating the tyre.
Steer out of flow of traffic as quickly as possible without endangering
other vehicles. Stop and check the
tyres. Mount the spare wheel 3 182.
If run-flat tyres are fitted, maximum
speed is 80 km/h. Information 3 174.
Tyre pressure monitoring system
3 176.
Page 105 of 219
Instruments and controls103Washer fluid level
Low washer fluid level. Top up
washer fluid 3 156.Trip computer
Trip computer in Board-
Info-Display Access the data by pressing the BC
button on the Infotainment system or
the left adjuster wheel on the steering
wheel.
Some information appears in the
display in an abbreviated form.
Once an audio function has been
selected, the lower row of the trip computer function is displayed
furthermore.Instantaneous consumption
Displays the instantaneous
consumption. At low speeds,
consumption per hour is displayed.
Average consumption
Displays average consumption. The
measurement can be reset at any
time.
Absolute consumption
Displays fuel consumed. The
measurement can be reset at any
time.
Page 106 of 219

104Instruments and controls
Average speed
Displays average speed. The
measurement can be reset at any
time.
Stoppages in the journey with the
ignition off are not included in the
calculations.
Distance
Displays distance travelled. The
measurement can be reset at any
time.
RangeRange is calculated from current fuel
tank content and current
consumption. The display shows
average values.
After refuelling, the range updates automatically after a brief delay.
When the fuel level in the tank is low,
the message Range appears in the
display.
When the fuel tank is nearly empty,
the message Refuel! appears in the
display.
Stop watchSelect the function. Press the OK
button or the left adjuster wheel on the
steering wheel to start or stop the stop watch.
Restart trip computer
The measurement or calculation of
the following trip computer
information can be restarted:
■ Average consumption,
■ Absolute consumption,
■ Average speed,
■ Distance,
■ Stop watch.
Select the desired trip computer
information 3 94 . To restart, press the
OK button or the left adjuster wheel
on the steering wheel for approx.
2 seconds.
Page 107 of 219

Instruments and controls105Trip computer in Graphic-
Info-Display or Colour-
Info-Display
The main page of the trip computer
provides information on range,
current consumption and average
consumption of BC 1.
To display other trip computer data, press the BC button on the
infotainment system, select the trip
computer menu from the display or
press the left adjuster wheel on the
steering wheel.
Select BC 1 or BC 2 from the trip
computer menu.Range
Range is calculated from current fuel
tank content and current
consumption. The display shows
average values.
After refuelling, the range is updated
automatically after a brief delay.
When the fuel level in the tank is low,
the message Range appears in the
display.
When the fuel tank is nearly empty,
the message Please refuel! appears
in the display.
The navigation system will support
you in finding the nearest gas station. See Infotainment manual for further
information.
Instantaneous consumption Display of the instantaneous
consumption. At low speeds,
consumption per hour is displayed.
Page 108 of 219
106Instruments and controls
DistanceDisplays distance travelled. The
measurement can be reset at any
time.
Average speed
Displays average speed. The
measurement can be reset at any
time.
Stoppages in the journey with the
ignition off are not included in the
calculations.
Absolute consumption
Displays fuel consumed. The
measurement can be reset at any
time.
Average consumption
Displays average consumption. The
measurement can be reset at any
time.
Restart trip computer
The measurement or calculation of
the following trip computer
information can be restarted:
■ Distance,
■ Average speed,
■ Absolute consumption,
■ Average consumption.
Select BC 1 or BC 2 from the Board
Computer menu.
The information of the two trip
computers can be reset separately,
making it possible to evaluate data
from different time periods.
Select the required trip computer
information and confirm.
Page 120 of 219

118Climate control
■Open side air vents as required and
direct them towards door windows.
■ For simultaneous warming of the foot well, set air distribution control
to J.
Air conditioning system
In addition to the heating and
ventilation system, the air
conditioning system has:
n=Cooling4=Air recirculationCooling n
Operated with the n button and is
functional only when the engine and
fan are running.
The air conditioning system cools and
dehumidifies (dries) when outside
temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch the cooling system off to save
fuel.
Air recirculation system 4
Operated with the 4 button.9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up. The quality
of the passenger compartment air
deteriorates, which may cause the vehicle occupants to feel drowsy.
Air distribution to l: Air recirculation
is deactivated.
Maximum cooling Briefly open the windows so that hot
air can disperse quickly.
■ Cooling n on.
■ Air circulation system 4 on,
■ Set air distribution control to M.
■ Set temperature control to coldest level.
■ Set fan speed to highest level.
■ Open all vents.
Demisting and defrosting the
windows ■ Cooling n on.
■ Set air distribution control to l.
■ Set temperature control to warmest
level.
■ Set fan speed to highest level.
■ Switch on heated rear window Ü.
Page 122 of 219

120Climate control
The air conditioning system cools and
dehumidifies (dries) when outside
temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch the cooling system off to save
fuel.
Air recirculation system 4
The air recirculation mode is operated
with the 4 button.9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up. The quality
of the passenger compartment air
deteriorates, which may cause the vehicle occupants to feel drowsy.
Maximum cooling
Briefly open the windows so that the heated air can disappear quickly.
■ Cooling n on.
■ Set air distribution control to M.
■ Set temperature control to required
temperature value.
■ Set fan control to A.
■ Open all vents.
The automatic climate control
automatically cools to the specified
value with the maximum cooling
power.
With the temperature control turned
to its minimum setting, the system
continually runs at maximum cooling. The system is automatically set to air
recirculation when the air conditioning
is on.
Demisting and defrosting the
windows ■ Cooling n on.
■ Press button V: in position A, fan
automatically switches to maximum speed, the air distribution is
directed towards the windscreen.■ Set temperature control to warmest
level.
■ Switch on heated rear window Ü.
Electronic climate control
system
Controls for: ■ Temperature
■ Air distribution and menu selection
■ Fan speed
AUTO=Automatic mode4=air recirculationV=demisting and defrosting
Page 124 of 219

122Climate control
Individual menu items are marked by
turning the centre control and
selected by pressing it.
To exit a menu, turn the centre control until Return or Main appear and
select.
Air distribution
Turn the centre control. The Air
distribut. menu is activated, showing
the possible air distribution settings:Top=to windscreen and front
door windows.Centre=to vehicle occupants.Bottom=to foot well.
The Air distribut. menu can also be
called up via the Climate menu.
Return to automatic air distribution:
Deactivate corresponding setting or
press button AUTO.
Cooling
In the Climate menu, select menu
item AC and activate or deactivate
cooling.
The air conditioning system cools and
dehumidifies (dries) when outside
temperature is above a specific level. Therefore condensation may form
and drip from under the vehicle.
If no cooling or drying is required,
switch the cooling system off to save
fuel, Eco appears in the display.
Fan regulation in automatic
mode
Fan regulation in automatic mode can
be adapted.
Select menu item Automatic blower
from the Climate menu and select the
desired fan regulation.
Manual air recirculation mode The manual air recirculation mode is
operated with the 4 button.9Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up. The quality
of the passenger compartment air
deteriorates, which may cause the vehicle occupants to feel drowsy.