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.
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.
Climate control
121
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. 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 at 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 mode
4 = Air recirculation
V = Demisting and defrosting
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.
Climate control
123
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 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, 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.
Automatic air recirculation The automatic air recirculation
system has an air quality sensor
which can switch automatically to
recirculation.
124
Climate control
In the Climate menu, select menu
item Auto recirc and activate or
deactivate.
Switch to manual air recirculation as
necessary.
Manual air recirculation mode
The manual 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 conditioning with the engine
not running
When
ignition is off, the residual heat
or cooling in the system can be used
for climate control in passenger
compartment. Press the AUTO button with the
ignition off. Residual air conditioning
on will appear briefly in the display.
Residual climate control can only
operate
for a limited period of time. To
cancel, press the AUTO button.
Auxiliary heater
Air heater
Quickheat is an electric auxiliary air
heater which warms up the
passenger compartment more
quickly.
Coolant heater
Diesel-engined vehicles have a fuel-
powered auxiliary coolant heater
which warms up the engine coolant
when the engine is running. Air vents
Adjustable air vents
At least one air vent must be open
while
cooling is on in order to prevent
the evaporator from icing up due to
lack of air movement.
Air vents with adjuster wheel To open or close the vent, turn the
adjuster wheel.
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
Vehicle care
169 Fuse assignments in
conjunction with load
compartment
fuse box version A
No. Circuit
1
ABS
2 ABS
3 Interior fan electronic climate
control
4 Interior fan heating and air
conditioning system
5 Radiator fan
6 Radiator fan
7 Central locking system
8 Windscreen washer, rear
window washer
9 Heated rear window, heated
exterior mirror
10 Diagnostics plug
11 Instruments No. Circuit
12
Mobile telephone, digital radio,
infotainment system, display
13 Courtesy light
14 Windscreen wipers
15 Windscreen wipers
16 Horn, ABS, brake light switch,
air conditioning system
17 Diesel fuel filter or air
conditioning system
18 Starter
19 –
20 Horn
21 Engine electronics
22 Engine electronics
23 Headlight range adjustment
24 Fuel pump
25 –
26 Engine electronics