98Climate control
clockwise=warmanticlockwise=cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
When the minimum temperature is
set below 16 ℃, the electronic climate
control system runs at maximum
cooling. LO appears in the display.
If the maximum temperature is set
above 32 ℃, the electronic climate
control system runs at maximum
heating. HI appears in the display.
Fan speed
The selected fan speed is indicated
with bars in the display.
Press ] or < to increase or decrease
the fan speed.
maximum fan
speed=all bars displayedminimum fan
speed=one bar displayed
Press n button to deactivate fan.
To return to automatic fan speed:
Press AUTO button.
Demisting and defrosting the
windows
Press the Ê button.
Temperature and air distribution are
set automatically and the fan runs at a high speed.
When the vehicle reaches normal
operating temperature the function
remains active for approx. 3 minutes.
To return to automatic mode: press
button n or AUTO .
Air distribution
Press R, S and 6 buttons.
LED in buttons illuminate.
Arrows shown in the display indicate
the distribution settings.
Cooling
Press button n to switch on cooling.
Activation is indicated by the LED in
the button. Cooling is only functional
when the engine is running and
climate control fan is switched on.
Press button n again to switch off
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
press n again to switch the cooling
system off, thus saving fuel.
Manual air recirculation mode
Operated with the 4 button.recir‐
cula‐
tion on=LED in button illuminated;
D appears in the displayrecir‐
cula‐
tion off=LED in button
extinguishes; E
appears in the display9 Warning
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.
100Climate controlFixed air ventsAdditional air vents are located
beneath the windscreen and door
windows and in the foot wells.Maintenance
Air intake
The air intake in front of the
windscreen in the engine
compartment must be kept clear to
allow air intake. Remove any leaves,
dirt or snow.
Pollen filter
The pollen filter cleans dust, soot,
pollen and spores from the air
entering the vehicle through the air
intake.
Air conditioning regular
operation In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when outside
temperature is too low.
Service For optimal cooling performance, it isrecommended that the climate control
system be checked annually, 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 check
102Driving and operatingIgnition switch positionsSTOP=Steering wheel lock
released, ignition offMAR=Ignition on, for diesel
engine: preheatingAVV=StartingStarting the engine
Manual transmission: operate clutch
and brake.
Manual transmission automated: operate brake, the transmission
automatically shifts to N (neutral)
Do not operate the accelerator pedal. Diesel engine: turn the key to positionMAR for preheating until control
indicator ! extinguishes.
Turn the key briefly to position AVV
and release.
Before restarting or to switch off the
engine, turn the key back to position
STOP .
Autostop
During an Autostop, the engine is
restarted automatically by depressing the clutch pedal. Vehicles with
manual transmission automated
(MTA): shift to a forward gear, release
brake pedal or move lever to +, – or
R to enable an automatic restart.
Stop-start system 3 103.
Starting the vehicle at low
temperatures The start of the engine without
additional heaters is possible down to
-25 °С for diesel engines and -30 °C
for petrol engines. Required is an
engine oil with the correct viscosity,
the correct fuel, performed services
and a sufficiently charged battery.
104Driving and operating
ActivationThe stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.
Deactivation
Deactivate the stop-start system
manually by pressing the ^ button in
the centre console. LED in the button
illuminates to confirm deactivation.
Autostop
If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
■ Depress the clutch pedal
■ set the lever to neutral
■ release the clutch pedal
The engine will be switched off while the ignition stays on.
An Autostop is indicated when control indicator ^ flashes in the Driver
Information Centre 3 79.
During an Autostop, the heating and
brake performance will be
maintained.Caution
The steering assist can be
reduced during an Autostop.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
Otherwise an Autostop will be
inhibited.
■ The stop-start system is not manually deactivated
■ the bonnet is fully closed
■ the driver's door is closed and the driver's seat belt is fastened
■ the battery is sufficiently charged and in good condition
■ the engine is warmed up
■ the engine coolant temperature is not too high
■ the engine exhaust temperature is not too high, e.g. after driving with
high engine load
Driving and operating109Selector lever
Always move the selector lever in the
appropriate direction as far as it will
go.
After selecting A/M, + or - and
releasing the selector lever, the lever
automatically returns to the centre
position.
N=Neutral.o=Drive position.A/M=Switch between automatic
and manual mode.
The transmission display
shows AUTO when in
automatic mode.R=Reverse gear.
Engage only when vehicle is
stationary. The transmission
display shows "R" when
reverse gear is engaged.+=Shift to a higher gear.-=Shift to a lower gear.
Starting-off
When the engine is started, depress
the foot brake and move the selector
lever towards + to engage first gear.
Shift to a higher or lower gear by
moving selector lever to + or -.
Gears can be skipped by moving the selector lever repeatedly at short
intervals.
The driver will be alerted to an
incorrect gear selection by an audible warning chime in conjunction with a
message in the Driver Information
Centre 3 79. The system will
downshift, selecting the most
appropriate gear automatically.
If R is selected, reverse gear is
engaged. The vehicle starts to move
when the foot brake is released. To
start off quickly, release the foot brake
and accelerate immediately after
engaging a gear.
Move the selector lever towards A/M
to engage automatic mode; the
transmission shifts to other gears
automatically, dependent on driving
conditions.
To engage manual mode, move the
selector lever towards A/M. The
current gear will appear in the
transmission display.
Stopping the vehicle
In automatic or manual mode,
first gear is engaged and the clutch is
released when the vehicle is stopped. In R, reverse gear remains engaged.
When stopping on gradients, engage parking brake or depress the foot
brake. To prevent overheating of the
clutch, an intermittent audible
warning chime may sound as a signal
to depress the foot brake or apply the
parking brake.
Switch off engine if stopping for a
lengthy period, e.g. in traffic jams.
Driving and operating119Caution
Use of fuel that does not comply toEN 228 or E DIN 51626-1 or
equivalent can lead to deposits or
engine damage and may affect
your warranty.
Caution
Use of fuel with too low an octane
rating could lead to uncontrolled combustion and engine damage.
Fuel for diesel engines
Only use diesel fuel that complies
with EN 590.
In countries outside the European
Union use Euro-Diesel fuel with a
sulphur concentration below 50 ppm.
Caution
Use of fuel that does not comply to EN 590 or similar can lead to
engine powerloss, increased wear
or engine damage and may affect
your warranty.
Do not use marine diesel oils, heating
oils, Aquazole and similar diesel-
water emulsions. Diesel fuels must
not be diluted with fuels for petrol
engines.
Fuel for natural gas
operation
Use natural gas with a methane
content of approx. 78 - 99 %. L-gas
(low) has approx. 78 - 87 % and H-gas (high) has approx. 87 - 99 %. Biogaswith the same methane content can
also be used if it has been chemically
prepared and desulphurised.
Only use natural gas or biogas that
complies with DIN 51624.
Liquid gas or LPG must not be used.
Fuel selector
Pressing button Y in the centre
console switches between petrol and
natural gas operation. The LED 1
status shows the current operating
mode.
1 off=natural gas
operation.1 illumi‐
nates=petrol operation.
As soon as the natural gas tanks are
empty, petrol operation is
automatically engaged. Control
140Vehicle care
No.CircuitF09Rear door switchF10HornF14High beamF15PTCI heaterF19Air conditioning systemF20Heated rear windowF21Fuel pumpF30Fog lightsF84CNG systemF85Power outletsF86Cigarette lighter, heated seatsF87Stop-start systemF88Mirror heating
After having changed defective fuses
refit the fuse box cover.
If the fuse box cover is not closed
correctly, malfunction may occur.
Instrument panel fuse box
The fuse box is located behind a
cover on the lower part of the
instrument panel, on the driver's side.
156Vehicle care
Windows and windscreen wiperblades
Use a soft lint-free cloth or chamois leather together with window cleanerand insect remover.
When cleaning the rear window from
inside, always wipe in parallel to the
heating element to prevent damage.
For mechanical removal of ice, use a
sharp-edged ice scraper. Press the
scraper firmly against the glass so
that no dirt can get under it and
scratch the glass.
Clean smearing wiper blades with a
soft cloth and window cleaner.
Glass panel
Never clean with solvents or abrasive agents, fuels, aggressive media (e.g.
paint cleaner, acetone-containing
solutions etc.), acidic or highly
alkaline media or abrasive pads. Do
not apply wax or polishing agents to
the glass panel.
Wheels and tyres Do not use high-pressure jet
cleaners.Clean rims with a pH-neutral wheel
cleaner.
Rims are painted and can be treated
with the same agents as the body.
Paintwork damage
Rectify minor paintwork damage with a touch-up pen before rust forms.
Have more extensive damage or rust areas repaired by a workshop.
Underbody Some areas of the vehicle underbody
have a PVC undercoating while other critical areas have a durable
protective wax coating.
After the underbody is washed, check
the underbody and have it waxed if
necessary.
Bitumen/rubber materials could
damage the PVC coating. Have
underbody work carried out by a
workshop.
Before and after winter, wash the
underbody and have the protective
wax coating checked.Natural gas system
Do not direct the steam jet or high-
pressure jet towards natural gas
system components. It is particularly
important to protect the natural gas
tank and the pressure valves on the
vehicle underbody and the bulkhead
in the engine compartment.
These components must not be
treated using chemical cleaners or
preservatives.
Have components of the natural gas
system cleaned by a workshop
authorised to carry out maintenance
of natural gas vehicles.
Towing equipment Do not clean the coupling ball bar with
a steam-jet or high-pressure jet
cleaner.
Interior care Interior and upholsteryOnly clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.