Climate control147Cooling A/C
Press A/C to switch on cooling. The
LED in the button illuminates to
indicate activation. Cooling is only
functional when the engine is running and climate control fan is switched on.
Press A/C again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) cabin air as
required. Therefore condensation
may form and is drained under the
vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons.
System ON/OFF X
Cooling, fan and automatic mode can
be switched off by pressing X. When
the system is deactivated, LED in the button X extinguishes.
Activate by pressing X or cooling
button A/C or automatic mode button
AUTO . The LED in the button
illuminates to indicate activation.
Manual air recirculation 4
Press 4 to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Select air recirculation to assist in cooling the interior or in blocking
outside odours or exhaust. When
recirculation is selected, a partial
ventilation to refresh the interior air
will occur every 10 minutes.
Press 4 again to deactivate
recirculation mode.
In warm and very humid ambient air
conditions, the windscreen may mist
up from outside, when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate l.
Basic settings
Some basic settings can be changed in the vehicle personalisation menu in the Colour-Info-Display.
Select the relevant settings in
Settings , I Vehicle in the Colour-Info-
Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 121.
150Climate controlDemisting and defrosting the
windows V
●
Press V. The LED in the button
illuminates to indicate activation.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window Ü.
● To return to previous mode: press V. To return to automatic
mode: press AUTO.
Setting of automatic rear window heating based on cool outside
temperatures can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 121.
Note
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
Stop-start system 3 160.
Manual settings
Climate control system settings can
be manually adapted by using the air
distribution buttons and the fan speed controller as follows. Manual
changing of settings will deactivate
the automatic mode.Fan speed SZR
Touch ZS or R. The selected fan
speed is briefly indicated in the Info-
Display.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press
AUTO .
Climate control151Air distribution l, M , K
Press appropriate button for desired
adjustment. The LED in the button
illuminates to indicate activation.
l:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well and windscreen
Combinations are possible.
Return to automatic air distribution:
press AUTO .
Cooling A/C
Press A/C to switch on cooling. The
LED in the button illuminates to
indicate activation. Cooling is only
functional when the engine is running and climate control fan is switched on.
Press A/C again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) cabin air as
required. Therefore condensation
may form and is drained under the
vehicle.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons.
System ON/OFF X
Cooling, fan and automatic mode can
be switched off by pressing X. When
the system is deactivated, the LED
extinguishes in button X.
Activate by pressing X or cooling
button A/C or automatic mode button
AUTO . The LED in the button
illuminates to indicate activation.
Manual air recirculation 4
Press 4 to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
152Climate controlSelect air recirculation to assist incooling the interior or in blocking
outside odours or exhaust. When
recirculation is selected, a partial
ventilation to refresh the interior air
will occur every 10 minutes.
Press 4 again to deactivate
recirculation mode.
In warm and very humid ambient air conditions, the windscreen may mist
up from outside when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate l.
Automatic air recirculation An air humidity sensor automatically
switches the system to external air if
internal air humidity is too high.
Basic settings Some basic settings can be changed
in the vehicle personalisation menu in
the Colour-Info-Display.
Select the relevant settings in
Settings , I Vehicle in the Colour-Info-
Display.
Colour-Info-Display 3 118.Vehicle personalisation 3 121.
Auxiliary heater
Air heater Quickheat is an electric auxiliary air
heater which automatically warms up
the passenger compartment more
quickly.Air vents
Adjustable air vents Front air vents
To open the vent, turn the adjuster
wheel to B. Adjust the air amount at the
vent outlet by turning the adjuster
wheel.
154Climate controlActive carbon filter
In addition to the particle filter, the active carbon filter reduces odours.
Air conditioning regularoperation
In order to ensure continuously
efficient performance, it is
recommended that air conditioning
should be operated for a few minutes once a month, irrespective of the
weather and time of year.
Service For optimal cooling performance, it is recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance checkNote
Refrigerant R-134a contains
fluorinated greenhouse gases.
162Driving and operating● The climate control systemallows an Autostop.
● The brake vacuum is sufficient.
● The self-cleaning function of the diesel particle filter is not active.
● The vehicle was driven at least at
walking speed since the last Autostop.
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 141.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 156.
Vehicle battery discharge protection
To ensure reliable engine restarts, several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features e.g. auxiliary electric heater
or heated rear window are disabled orswitched to a power saving mode.
The fan speed of the climate control
system is reduced to save power.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.
The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 106.
Restart of the engine by the stop-
start system
The selector lever must be in neutral to enable an automatic restart.
If one of the following conditions occurs during an Autostop, the
engine will be restarted automatically by the stop-start system:● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.
● The charging level of the vehicle battery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during the restart might be noticeable.
216Driving and operatingPress LPG to switch between petrol
and liquid gas operation as soon as
the required parameters (coolant
temperature, gas temperature and
minimum engine speed) have been
reached. The requirements are
usually fulfilled after approximately
60 seconds (depending on exterior
temperature) and the first firm press
on the accelerator. The status LED
shows the current operating mode.1 off:petrol operation1 flashes:checking conditions
for fuel transition to
liquid gas operation.
Illuminates if
conditions are fulfilled.1 illumi‐
nates:liquid gas operation1 flashes
five times
and extin‐
guishes:liquid gas tank is
empty or failure in
liquid gas system. A
message is displayed
in the Driver
Information Centre.
If the fuel tank is empty, the engine
will not start.
The selected fuel mode is stored and
reactivated at the next ignition cycle if conditions allow.
As soon as the liquid gas tank is
empty, petrol operation is
automatically engaged until the
ignition is switched off.
When switching automatically
between petrol or gas operation, a
brief delay of engine tractive power
may be noticeable.
Every six months, run the petrol tank
down until control indicator I or
Y illuminates, then refuel. This helps
maintain fuel quality and system
function for petrol operation.
Fill the tank completely at regular intervals to prevent corrosion in the
tank.
Faults and remedies
If gas mode is not possible, check the
following:
● Is there enough liquid gas present?
● Is there enough petrol present for
starting?Due to extreme temperatures in
combination with the gas
composition, it may take slightly
longer before the system switches
from petrol to gas mode.
In extreme situations, the system may also switch back to petrol mode if the
minimum requirements are not
fulfilled. If conditions allow, it may be
possible to manually switch back to
liquid gas operation.
Seek the assistance of a workshop in
the event of all other faults.Caution
Repairs and adjustments may only be made by trained specialists in
order to maintain the safety and
warranty on the LPG system.
Liquid gas is given a particular odour
(odorised) so that any leaks can be
detected easily.
Vehicle care249No.Circuit16Vacuum pump/Mass air flow
meter/Water in fuel sensor/DC
transformer17Additional tail lights (type B)18Adaptive forward lighting19Adaptive forward lighting20Fuel pump21Rear power windows22ABS23Variable effort steering24Front power windows25Power outlets (type A)
Additional tail lights (type B)26ABS27Electric parking brake28Heated rear window29Left power seat30Right power seatNo.Circuit31Air conditioning system32Body control module33Heated front seats34Sunroof (type A)
Tailgate locking (type B)35Infotainment system (type A)
Tailgate locking (type B)36–37Right high beam38Left high beam39–40–41Vacuum pump42Radiator fan43Vehicle battery/DC transformer
(only on vehicles with stop-start
system)44Headlamp washer systemNo.Circuit45Radiator fan46Terminal 87/Main relay47Lambda probe48Fog lights49Right low beam50Left low beam51Horn52Ignition53Ignition/Ventilated front seats54Ignition55Power windows/Mirror folding56Windscreen washer57–58–59Diesel fuel heating/Emission
control system60Mirror heating61Mirror heating