
X
Turn the key to position 1or 2in the
ignition lock.
X Turn the combination switch in the
direction of arrow 0005to the appropriate
setting depending on the intensity of the
rain.
X Single wipe: push the combination switch
briefly up to the pressure point in the
direction of arrow 0006.
X To wipe with washer fluid: press the
combination switch beyond the pressure
point in the direction of arrow 0006.
i Wipe the windshield using washer fluid
even if it is raining. By doing so, you will
prevent smears on the windshield.
The detent positions of the combination
switch correspond to the following wiper
speeds:
0W indshield wipers off
II ntermittent wipe
II Normal wipe
III Rapid wipe
i Canada only:
If the windshield wipers are switched on
and you stop the vehicle, the windshield
wipe rspeed is reduced. For example, if you
have selected level IIand stop the vehicle,
wiping continues with intermitten twipe
while the vehicle is stationary. If
intermitten twipe is selected, the intervals
become longer.
Vehicles with arain and light sensor:
you can use level Ias the universal setting.
The rai nand light sensor sets the
appropriate wiping frequency
automatically, according to the intensity of
the rain. Whe nyou stop the vehicle, levels
III and IIare switched down to level I
automatically.
The windshield wiper will return to the
original level when you drive faster than
5 mph (8 km/h) again. You can adjust the sensitivity of the rain and
light sensor using the on-board computer
(Y
page 189).
Information on checking the washer fluid
level can be found in the "Maintenance and
care" (Y page 246) section. Switching the rear window wiper on/
off
Combination switch
0005
0001 Rear window wiper switch
0009 0006 To wipe with washer fluid
000A ITo switch on intermittent wiping
000E 0To switch off intermittent wiping
000F 0006 To wipe with washer fluid
X Turn the key to position 1or 2in the ignition
lock.
X Turn switch 0005to the corresponding
position
The rear window wiper switches on
automatically if you engage reverse gear and
the windshield wipers are on. Replacing the wiper blades
G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm. There is a risk
of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades. 104
Windshield wipersLights and windshiel
dwipers

!
Never open the hood if a windshield wiper
arm has been folded away from the
windshield.
Never fold a windshield wiper arm without
a wiper blade back onto the windshield/
rear window.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the windshield wiper arm without a wiper
blade and it falls onto the windshield, the
windshield may be damaged by the force of
the impact.
We recommend that you have the wiper
blades replaced at a qualified specialist
workshop.
! Only hold the wiper blade by the wiper
arm. You could otherwise damage the
wiper rubber.
The windshield will no longer be wiped
properly if the wiper blades are worn. Replace
the wiper blades twice a year, ideally in spring
and fall. Front windshield wiper arm with wiper blade
X Fold wiper arm 0026away from the
windshield.
X Set wiper blade 0005at right angles to the
wiper arm.
X Press both retaining clips 0006together in
the direction of the arrow and swing wiper
blade 0005away from wiper arm 0026.
X Pull wiper blade 0005up and out of the
retainer on wiper arm 0026. X
Slide new wiper blade 0005into the retainer
on wiper arm 0026.
X Press new wiper blade 0005onto wiper arm
0026 until you hear retaining clips 0006engage.
X Fold wiper arm 0026back onto the windshield
again. Problems with the windshield wipers
The windshield wipers are jammed The windshield wiper drive has been
deactivated.
X
Stop the vehicle as soon as possible, paying
attention to road and traffic conditions.
X For safety reasons, you should remove the
key from the ignition lock.
X Remove the cause of the obstruction, e.g.
leaves or snow.
X Switch on the windshield wipers again.
The windshield wipers are not working
at all There is a malfunction in the windshield wiper
drive.
X
Select another wiper speed on the
combination switch.
X Have the windshield wipers checked at a
qualified specialist workshop. Windshield wipers
105Lights and windshield wipers Z

Control panel for rear-compartment air-conditioning system
0005
Sets the airflow (Y page 114)
0026 Increases the airflow
0025 Reduces the airflow
0006 Sets the temperature (Y page 113)
0026 Blower setting bar display
0025 001B Switches the rear-compartment air conditioning on/off (Y page 112)Information on rear-compartment air
conditioning
For optimum climate control, set the
temperature control to the middle level. Only
change the temperature in small increments. Operating the climate control system
Switching the climate control on/off
Important information When the climate control is switched off, air
intake and air circulation also stop. Only use
this setting for a brie
fperiod. Otherwise, the
windows could fog up. Activating/deactivating climate
control via the control panel X
Turn the key to position 2in the ignition
lock.
Vehicle with heating
X To switch on: set airflow control 0006down
to at least level 1(Ypage 110).
X To switch off: set airflow control 0006up to
the 0position (Y page 110).
Vehicle with air conditioning
X To switch on: press the0026button and
set the blower speed to at least the first
level.
The blower speeds are shown in bars next
to the button.
X To switch off: press the0025button and,
after reaching the lowest blower speed,
press it again. 112
Operating the climate control systemClimate control

Activating/deactivating rear-
compartment climate control via the
control panel X
Turn the key to position 2in the ignition
lock.
Vehicle with rear-compartment heating/
rear-compartment air conditioning
X To switch on/off: press the001Bswitch.
If the indicator lamp in the butto nlights up,
the rear-compartment heating/rear-
compartmen tair conditioning is switched
on. Switching the cooling with air
dehumidification function on/off
Important information If you switch off the "Cooling with air
dehumidification" function, the air inside the
vehicle will not be cooled (in warm weather)
or dehumidified. The windows could fog up
more quickly.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensatio nmay appear on the underside
of the vehicle when in cooling mode. This is
normal and not a sign that there is a
malfunction.
Switching on/off Vehicle with air conditioning
X
Press the 0008button.
If the indicator lamp in the butto nlights up,
cooling with air dehumidification is
switched on. Setting the temperature
Increasing/reducing temperature in
the front compartment via the control
panel Only change the temperature in small
increments. Start at the center position, or at
22 †.
X
Switch on climate control (Y page 112).
X Turn temperature control 0005clockwise to
increase or counterclockwise to reduce the
temperature (Y page 110).
Increasing/reducing temperature in
the rear compartment via the control
panel Only change the temperature in small
increments.
X
Switch on climate control (Y page 112).
X Turn rear-compartment temperature
control 0026(Ypage 111) or rear-
compartment air-conditioning system 0006
(Y page 112) clockwise to increase or
counterclockwise to reduce the
temperature.
i Vehicles with additional air conditioning
and heating in the rear compartment: if you
set the temperature control to the center
position, only one of the two climate
control systems works in the rear
compartmen tand in air-recirculation mode
(Y page 116). Setting the air distribution
Ai rd istribution settings The air distribution symbols have the
following meanings:
0027
Directs air through the center
and side air vents
000B0021 Directs air to the windshield and
the air vents Operating the climate control system
113Climate control

Rear window defroster
Rear window defroste
rswitch
The rear window defroster consumes a lot of
power. You should therefore switch it off as
soon as the window is clear .The rear window
defroster otherwise switches off
automatically after 12 minutes.
X Start the engine.
X To switch on/off: press the0019switch.
The indicator lamp in the 0019button
comes on when the rear window defroster
is switched on.
If the indicator lamp in the 0019rear window
defroster button flashes, the on-board
voltage is too low. The rear window defroster
has switched off prematurely or cannot be
activated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
If enough on-board voltage is available again
within 30 seconds, the rear window defroster
automatically switches on again. It otherwise
remains switched off. Switching air-recirculation mode on/
off
Important safety notes When you switch on air-recirculation mode,
the windows could fog up more quickly, in
particular at low outside temperatures. Only switch on air-recirculation mode for a short
time.
You can deactivate the intake of fresh air if
unpleasant odors enter the vehicle from
outside. The air inside the vehicle will only be
circulated.
Heating/air-conditioning system
Air-recirculation mode switches off
automatically after about 10to 30 minutes,
depending on the outside temperature.
X
Switch on climate control (Y page 112).
X To switch on/off: press the0022switch.
If the indicator lamp in the 0022button
lights up, air-recirculation mode is
activated.
Rear-compartment heating/rear-
compartment air conditioning On vehicles with a rear-compartment heating
and air-conditioning system, you can
activate/deactivate air-recirculation mode
for the rear-compartment climate control.
X Switch on climate control (Y page 112).
X To activate: set the temperature control of
rear-compartment heating
0026(Y page 111) or rear-compartment air
conditioning system 0006(Ypage 112) to the
center position.
Only one of the two climate control
systems in the rear compartment is
activated and is in air-recirculation mode.
X To deactivate: turn the temperature
control of rear-compartment heating
0026(Y page 111) or rear-compartment air-
conditioning system 0006(Ypage 112)
clockwise or counterclockwise. Only
change the temperature in small
increments. 116
Operating the climate control systemClimate control

Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents .This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air
outlets. If necessary, redirect the airflow to
another area of the vehicle interior.
The center and side air vents are adjustable.
On vehicles with arear-compartment air-
conditioning system, you can also adjust the
air vents in the roof duct.
i For virtually draft-free ventilation, adjust
the sliders of the center air vents to the
center position.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet grille on the hood free of
blockages, such as ice, snow or leaves.
R never cover the vents or the ventilation
grilles in the vehicle interior. Setting the center air vents
0005
Center air vent, left
0006 Center air vent, right
0026 Thumbwheel for center air vent, right
0025 Thumbwheel for center air vent, left X
To open: turn thumbwheel 0026to the right
or thumbwheel 0025to the left.
X To close: turn thumbwheel 0026to the left or
thumbwheel 0025to the right. Setting the side air vents
Side air vent (example: right-hand side of the
vehicle)
X
To open: turn thumbwheel 0026of side air
vents 0005upward.
X To close: turn thumbwheel 0026of side air
vents 0005downward.
i If the 0012 symbol can be seen on
thumbwheel 0026, defroster vent 0006is open. Adjusting air vents for the passenger
compartment
Air vents (example: right-hand side of the vehicle)
You can use the air vents to ventilate the
vehicle interior on the left and right, in the rear
and the headroom. Adjusting the air vents
117Climate control Z

X
To open: for the left-hand side of the
vehicle, tur nthumbwheel 0005or for the
right-hand side of the vehicle,
thumbwheel 0006of the air vents clockwise.
X To close: for the left-hand side of the
vehicle, turn thumbwheel 0005or for the
right-hand side of the vehicle,
thumbwheel 0006of the air vents counter-
clockwise. Adjusting the air vents in the roof duct
! Always leave at least one air vent open.
If the rear-compartment air conditioning is
switched on and all the air vents are closed,
the air-conditioning system may be
damaged. On vehicles with rear-compartment air
conditioning, adjustable air vents are
integrated into the roof duct.
X
To adjust the airflow: open or close the
air flap in air vents 0005as needed.
X To adjust the air distribution: turn air
vent 0005to the desired position. Operating the auxiliary heating
system
Important safety notes
G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases such as carbon monoxide (CO) may enter the
vehicle. This is the case, for example in
enclosed spaces or if the vehicle gets stuck
in snow. There is a risk of fatal injury.
Switch the auxiliary heating off in enclosed
spaces without extraction systems, e.g. in
garages. If the vehicle is stuck in snow and
you have to leave the auxiliary heating
running, keep the exhaust pipe and the area
around the vehicle free of snow. To ensure an
adequate supply of fresh air, open a window
on the side of the vehicle that is not facing
into the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot, e.g.
the exhaust system. If flammable materials
such as leaves, grass or twigs remain in
contact with hot parts of the exhaust system
for a prolonged period, they could ignite.
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that no flammable material can
come into contact with hot vehicle
components.
! Switch on the auxiliary heating system at
least once a month for approximately
10 minutes. The auxiliary heating could
otherwise be damaged.
! Make sure that the flow of hot air is not
blocked. The auxiliary heating will
otherwise overheat and switch off.
Your vehicle may be equipped with either an
auxiliary hot-water heater or an auxiliary
warm-air heater. Adjustment and operation of
the:
R hot-water auxiliary heater is done via the
on-board computer and with the auxiliary
heating button in the control panel
(Y page 119) or with the remote control
(Y page 121).
R auxiliary warm-air heater is done via the
timer above the overhead control panel
(Y page 122). 118
Operating the auxiliary heating systemClimate control

The auxiliary heating works independently of
the engine and supplements the climate
control system in the vehicle. The auxiliary
heating heats the air in the vehicle interior to
the temperature set.
If your vehicle is equipped with a hot-water
auxiliary heater, the auxiliary heating also
keeps the coolant warm. This way, the load
on the engine is minimized and fuel is saved.
The heater booster function of the auxiliary
heating supports the climate control system
when the engine is runnin gand the outside
temperature is low.
You can use the auxiliary heating at an
outside temperature of up to 39 ‡ (4 †). At
an outside temperature above 39 ‡(4† ) the
auxiliary heating system and the heater
booster function switch off automatically.
i If the interior motion sensor (Y page 61)
is armed and the auxiliary heating is
switched on, it is possible that the interior
temperature monitoring may cause a false
alarm. In this case, either deactivate the
interior motion sensor or switch off the
auxiliary heating. Before switching on
X Check the fuel level and top up if necessary.
The auxiliary heating is operated directly
using the vehicle's fuel. The tan kmust be
at least a quarter full to ensure that the
auxiliary heating functions.
X Switch on climate control (Y page 112).
X Se tthe temperature control to the desired
temperature (Y page 113).
X Set the air distribution as required
(Y page 113).
X Open the center (Y page 117) and side air
vents (Y page 117) and set them to the
middle position.
i The auxiliary heating automatically
switches to heater booster mode after the
engine is started. Operating with the button (control
panel)
i
Switch the heater booster function on or
off with the 0013button (Y page 125).
X To activate the auxiliary heating
system: press the upper section of the
0020 switch for longer than two seconds.
The red indicator lamp in the button lights
up. The auxiliary heating heats or ventilates
the interior to the temperature that you
have set. The blower switches to the first
level.
X To switch off auxiliary heating: press the
upper section of the 0020button.
Or
X Turn the key in the ignition lock to
position 0.
The red indicator lamp in the button goes
out. The auxiliary heating operates for
another two minutes and then switches off
automatically. Selecting
aswitch-on time
Important information You can use the on-boar
dcomputer to define
up to three switch-on times, one of which can
be selected.
The yellow indicator lamp in the 0020button
goes out after 30 minutes, if you:
R have selected the switch-on time and
R turn the key to position 0in the ignition
lock. Operating the auxiliary heating system
119Climate control Z