Page 90 of 228

90
Instruments and controls
It illuminates for a few seconds when
the ignition is switched on.
Flashing during driving
The system has kicked in. Engine
output may be reduced and the
vehicle may be braked automatically
to a small degree 3 142.
Illuminates while driving
The system is switched off or a fault
is present. Continued driving is
possible. Driving stability, however,
may deteriorate depending on road
surface conditions.
Have the cause of the fault remedied
by a workshop.
ESP® Plus
3 142.
Engine coolant
temperature
W illuminates red.
Illuminates when the engine is
running
Stop, switch off engine. Caution
Coolant temperature too high.
Check coolant level immediately
3 157.
If there is sufficient coolant, consult
a workshop.
Preheating and diesel
particle filter
!
illuminates or flashes yellow.
Illuminated
Preheating activated. Only activates
when outside temperature is low.
Flashes
( in
vehicles fitted with a diesel particle
filter).
Control indicator ! flashes if the filter
requires cleaning and previous
driving conditions did not permit
automatic cleaning. Continue driving
and if possible do not allow engine
speed to drop below 2000 rpm. The control indicator
! goes off as
soon
as the self-cleaning operation is
complete.
Diesel particle filter 3 129.
Deflation detection system
and tyre pressure
monitoring system
w illuminates or flashes red or yellow.
Control indicator lights red
Tyre pressure loss. Stop immediately
and check tyre pressure. A maximum
speed of 80 km/h is permitted for run-
flat tyres 3 174.
Control indicator lights yellow
Fault in system or tyre without
pressure sensor mounted (e. g. spare
wheel). Consult a workshop.
Flashes
Flashes three times to indicate
system initialisation.
Deflation detection system 3 177,
tyre pressure monitoring system
3 176.
Page 118 of 228
118
Climate control
Climate control
Climate control systems ............. 118
Air vents ..................................... 124
Maintenance .............................. 125 Climate control systems
Heating and ventilation
system
Controls for:
■ Air distribution
■ Temperature
■ Fan speed
Heated rear window Ü 3 42.
Air distribution
L =
to head area and foot well
M = to head area l
= to windscreen and front door
windows
J = to windscreen, front door
windows and foot well
K = to foot well
Intermediate settings are possible.
Temperature
red = warm
blue = cold
Heating will not be fully effective until
engine has reached its operating
temperature.
Fan speed
Adjust
the air flow by switching the fan
to the desired speed.
Demisting and defrosting the
windows
■ 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 119 of 228

Climate control
119
■ 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 Additional to the heating and
ventilation system, the air
conditioning system has:
n
= Cooling
4 = Air recirculation Cooling n
Operated with the n button and is
functional only when the engine and
fan are running.
The air condition 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. 9
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. 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 coldestlevel.
■ 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 120 of 228

120
Climate 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.
Automatic climate control
system Controls for:
■
Air distribution
■ Temperature
■ Fan speed n
= Cooling
4 = Air recirculation
V = Demisting and defrosting
Heated rear window Ü 3 42.
The preselected temperature is
automatically regulated. In the
automatic mode the fan speed
automatically regulates the air flow.
Automatic mode
Basic setting for maximum comfort: ■
Set fan control to A.
■ Set the air distribution control to the desired setting.
■ Preset temperature to the desired level.
■ Cooling n on.
■ Open all of the air vents.
Air distribution
L =
to head area and foot well
M = to head area
l = to windscreen and front door
windows
J = to windscreen, front door
windows and foot well
K = to foot well Intermediate settings are possible.
Temperature preselection
Set the temperature control to the
required position. Intermediate
settings are possible.
For reasons of comfort, change
temperature
only in small increments.
At the end positions, there is no
temperature regulation. The air
conditioning system works with
maximum cooling or heating.
Heating will not be fully effective until
engine has reached its operating
temperature.
Fan speed
In the automatic mode A the fan
speed automatically regulates the air
flow. If required the air flow can be
manually adjusted.
Cooling n
Operated with the n button and is
functional only when the engine and
fan are running.
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122
Climate control
Heated rear window Ü 3 42.
The preselected temperature is
automatically regulated. In the
automatic
mode the fan speed and air
distribution automatically regulate the
air flow.
The system can be manually adapted
by use of air distribution and air flow
controls. Data is shown on the Info-Display.
Setting modifications are briefly
shown in the Info-Display
,
superimposing over the currently
displayed menu. The electronic climate control system
is only fully operational when the
engine is running.
Do not cover the sensor on the
instrument panel for correct
operation.
Automatic mode
Basic setting for maximum comfort:
■
Press AUTO button.
■ Open all air vents.
■ Air conditioning on.
■ Set desired temperature.
Temperature preselection
Temperatures can be set to the
disired value.
For reasons of comfort, change
temperature only in small increments.
If the minimum temperature is set,
Lo appears in the display and the
electronic climate control system runs
at maximum cooling.
If the maximum temperature is set,
Hi appears in the display and the
electronic climate control system runs
at maximum heating. Fan speed
The selected fan speed is indicated
with
x
and the number in the display.
If the fan is switched off the air
conditioning is also deactivated.
To return to automatic mode: Press
AUTO button.
Demisting and defrosting the
windows
Press the V button. V appears in
the display.
Temperature and air distribution are
set automatically and the fan runs at
a high speed.
To return to automatic mode: press
button V or AUTO.
Switch on heated rear window Ü.
Manual settings in climate menu
Climate control system settings can
be changed via the centre control, the
buttons and the menus shown on the
display.
To view the menu, press the centre
control. The Climate menu appears in
the display.
Page 126 of 228
126
Climate control
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 low.
Service
For
optimal cooling performance, it is
recommended that the climate control
system be checked annually, starting
three years after initial vehicle
registration.
■ Functionality and pressure test
■ Heating functionality
■ Leakage check
■ Check of drive belts
■ Cleaning of condenser and evaporator drainage
■ Performance check
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128
Driving and operating
Ignition switch positions 0
= Ignition off
1 = Steering wheel lock released,
ignition off
2 = Ignition on, for diesel engine:
preheating
3 = Starting Starting the engine
Starting engine with ignition
switch
Operate clutch and brake, automatic
transmission in
P or N, do not
accelerate;
for diesel engine, turn the
key to position 2 for preheating until
control indicator ! goes out; turn key
to 3 and release key when engine is
running.
Before restarting or to switch off the
engine, turn key back to 0. Starting engine with the Start/
Stop button
The electronic key must be in the
vehicle interior. Operate clutch and
brake,
automatic transmission in P or
N , do not accelerate, for diesel
engine, press the button briefly to
start preheating, move the steering
wheel slightly to release the steering
wheel lock, wait until control
indicator ! goes out and then press
button for 1 second and release when
the engine is running.
Press button again to repeat the
starting procedure or to switch off the
engine.
Page 147 of 228

Driving and operating
147
Do not use marine diesel oils, heating
oils or entirely or partially plant-based
diesel fuels, such as rape seed oil or
bio diesel, Aquazole and similar
diesel-water emulsions. Diesel fuels
must not be diluted with fuels for
petrol engines.
The flow and filterability of diesel fuel
are temperature-dependent. When
temperatures are low, refuel with
diesel fuel with guaranteed winter
properties.
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 %. Biogas
with the same methane content can
also be used if it has been chemically
prepared and desulphurised.
Liquid gas or LPG must not be used. Refuelling
9
Danger Before refuelling, switch off engine
and any external heaters with
combustion chambers (identified
by
sticker on fuel filler flap). Switch
off any mobile phones.
Follow the operating and safety
instructions of the filling station
when refuelling. 9
Danger Fuel is flammable and explosive.
No smoking. No naked flames or
sparks.
If you can smell fuel in your
vehicle, have the cause of this
remedied immediately by
a workshop.
Fuel filler flap is located at right rear
side of vehicle.
The
fuel filler flap can only be opened
if the vehicle is unlocked.