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Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog up.
To prevent the windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only briefly
R switch on the cooling with air dehumidifica-
tion function
R activate the "Windshield defrosting" function
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The interior
filter cleans the air, thus improving the interior
climate.
The cooling with air dehumidification function is only available when the engine is running. Opti-mum climate control is only achieved with the
side windows closed. i
Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (Y page 78). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants and odors. A clogged filter reduces the
amount of air supplied to the vehicle interior.
Depending on the operating conditions and
environmental influences, the interval for
replacing the filter may be shorter than speci- fied.
i It is possible that the blower may be activa-
ted automatically 60 minutes after the engine has been switched off depending on various
factors, e.g. the outside temperature. The
vehicle is then ventilated for 30 minutes to drythe climate control system. Control panel for dual-zone automatic climate control
0043
Sets the temperature, left (Y page 105)
0044 Sets the air distribution (Y page 105)
0087 Sets the airflow (Y page 106)
Activates/deactivates climate control (Y page 104)
0085 Sets climate control to automatic (Y page 105)
0083 Defrosts the windshield (Y page 106)
0084 Calls up the climate control menu of the multimedia system (Y page 213)
006B Switches the rear window defroster on/off (Y page 107) Overview of climate control systems
103Climate control
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006C
Activates/deactivates synchronization (Y page 106)
006D Activates/deactivates air-recirculation mode manually (Y page 107)
006E Switches cooling with air dehumidification on/off (Y page 104)
006F Sets the temperature, right (Y page 105)Optimum use of dual-zone automatic
climate control
Dual-zone automatic climate control The following contains instructions and recom-
mendations to enable you to get the most out of
your dual-zone automatic climate control:
R Activate climate control using the 0058
rocker switch. The indicator lamp above the
0058 rocker switch lights up. The "Cooling
with air dehumidification" function is not acti- vated automatically in automatic mode. If
necessary, activate this function
(Y page 104).
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" function
briefly until the windshield is clear again.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up,
since no fresh air is drawn into the vehicle in
air-recirculation mode.
ECO start/stop function During automatic engine switch-off, the climate
control system only operates at a reduced capa-
city. If you require the full climate control output, you can switch off the ECO start/stop function
by pressing the ECO button (Y page 114).Operating the climate control sys-
tems Setting climate control
General notes When the climate control is switched off, the air
supply and air circulation are also switched off. The windows could fog up. Therefore, switch off
climate control only briefly
Switch on climate control primarily using the
0058 rocker switch (Y page 105).
Activating/deactivating X
Select key position 0048with the Start/Stop
button (Y page 111).
X To switch on: set the airflow to level 1or
higher using the Hrocker switch.
X To switch off: set the airflow to level 0using
the H rocker switch. Switching cooling with air dehumidi-
fication on/off
General notes If you deactivate the "Cooling with air-dehumid-
ification" function, the air inside the vehicle will
not be cooled. The air inside the vehicle will also
not be dehumidified. The windows can fog up
more quickly. Therefore, deactivate the cooling
with air-dehumidification function only briefly.
The "Cooling with air dehumidification" function is only available when the engine is running. Theair inside the vehicle is cooled and dehumidified
according to the temperature selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc-
tion.
Activating/deactivating X
Press the 005Arocker switch up or down.
The indicator lamp above the 005Arocker
switch lights up or goes out. 104
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Problems with the "Cooling with air dehumidification" function
Problem
Possible causes/consequences and
0050
0050Solutions The indicator lamp over
the
005A rocker switch
flashes three times or
remains off. The cooling
with air dehumidification
function cannot be acti-
vated via the multimedia system any longer
(Y page 213). Cooling with air dehumidification has been deactivated due to a mal-
function.
X Visit a qualified specialist workshop. Setting climate control to automatic
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature of the dispensed air, the airflow and the air dis- tribution.
During automatic controlling, the "Cooling with
air dehumidification" function is activated.
Automatic control X
Select key position 0048with the Start/Stop
button (Y page 111).
X To activate: press rocker switch 0058up or
down.
The indicator lamp above the 0058rocker
switch lights up.
X Set the desired temperature using the 0082
rocker switch.
X To switch to manual operation: press the
H rocker switch up or down.
or
X Press the upper or lower section of the 008F
rocker switch.
The indicator lamp above the 0058rocker
switch goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp
above the 0058rocker switch goes out. The
function which has not been changed manually,
however, continues to be controlled automati-
cally. When the manually set function switches
back to automatic mode, the indicator lamp
above the 0058rocker switch lights up again. Setting the temperature
Different temperatures can be set for the driv-
er's and front-passenger sides.
X Select key position 0048with the Start/Stop
button (Y page 111).
X To increase or reduce: press the0082
rocker switch up or down.
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †). Setting the air distribution
Air distribution settings 0061
Directs air through the defroster vents
009C Directs air through the center and side air
vents
009B Directs air through the footwell air vents
009F Directs air through the center, side and
footwell vents
008F Directs air through the defroster, center,
side and footwell vents
0087 Directs air through the defroster, center
and side air vents
0086 Directs air through the defroster and
footwell vents
Setting X
Select key position 0048with the Start/Stop
button (Y page 111).
X Press the 008Frocker switch up or down.
The various air distribution settings appear in the multimedia system. Operating the climate control systems
105Climate control
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Setting the airflow
X Select key position 0048with the Start/Stop
button (Y page 111).
X To increase or reduce: press theH
rocker switch up or down. Activating/deactivating synchroniza-
tion
General notes Climate control can be set centrally using the
synchronization function. The temperature set-
ting is adopted for the front-passenger side.
Activating/deactivating X
Press the 0rocker switch up or down.
The indicator lamp above the 0rocker
switch lights up or goes out.
The synchronization function deactivates if the
settings for the front-passenger side are
changed. Defrosting the windshield
General notes You can use this function to defrost the wind-
shield or to clear a fogged up windshield and
side windows.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Activating/deactivating X
Select key position 0048with the Start/Stop
button (Y page 111).
X To switch on: press the0064rocker switch
up or down.
The indicator lamp above the 0064rocker
switch lights up. The current climate control
settings are deactivated.
The climate control system switches to the
following functions:
R high airflow
R high temperature R
air distribution to the windshield and front
side windows
R air-recirculation mode off
i If necessary, the "Cooling with air dehumid-
ification" function is activated. In this case,
the indicator lamp above the 005Arocker
switch remains switched off.
X To switch off: press the0064rocker switch
up or down.
The indicator lamp above the 0064rocker
switch goes out. The previously selected set- tings are restored. Air-recirculation mode
remains deactivated. Removing condensation from the win-
dows
Windows fogged up on the inside X
Activate the "Cooling with air dehumidifica-
tion" function with the 005Arocker switch.
X Switch on automatic mode using the 0058
rocker switch.
X If the windows continue to fog up, activate the
"Windshield defrosting" function using the
0064 rocker switch.
i You should only select this setting until the
windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers.
X Switch on automatic mode using the 0058
rocker switch.
i If you clean the windows regularly, they do
not fog up so quickly. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as soon
as the rear window is clear. Otherwise, the rear
window defroster switches off automatically
after several minutes.
If the battery voltage is too low, the rear window defroster may switch off. 106
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Activating/deactivating
X
Select key position 0048with the Start/Stop
button (Y page 111).
X Press the 006Crocker switch up or down.
The indicator lamp above the 006Crocker
switch lights up or goes out.
Problems with the rear window defroster Problem
Possible causes/consequences and
0050
0050Solutions The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged.
X Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster can be activated again. Switching air-recirculation mode
on/off
General notes You can also temporarily deactivate the flow of
fresh air manually if unpleasant odors are enter-
ing the vehicle from outside. The air already
inside the vehicle will then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating X
Select key position 0048with the Start/Stop
button (Y page 111).
X To activate: press the0072rocker switch up
or down.
The indicator lamp above the 0072rocker
switch lights up.
Air-recirculation mode switches on automati-
cally:
R at high outside temperatures
R in a tunnel (vehicles with a navigation system
only)
The indicator lamp above the 0072rocker
switch is not lit when automatic air-recirculation
mode is activated. Outside air is added after
about 30 minutes. X
To deactivate: press the0072rocker switch
up or down.
The indicator lamp above the 0072rocker
switch goes out.
Air-recirculation mode deactivates automati-
cally:
R after approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
R after approximately five minutes if cooling
with air dehumidification is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with dehumidification"
function is activated 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 out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior. Air vents
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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 between the windshield and
the hood free of blockages, such as ice, snow
or leaves.
R never cover the air vents or air intake grilles in
the vehicle interior. Setting the air vents
Side air vent (example)
0043 Side window defroster vent
0044 Side air vent, left
0087 Control for left side air vent
X To open or close: turn thumbwheel0087to the
left or right as far as it will go.
X To adjust the air direction: hold side air
vent 0044in the center and move it up or down
or to the left or right. Adjusting the blower setting of the
AIRSCARF vents G
WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints. This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot. The blower setting of AIRSCARF vent
0043can be
adjusted using the AIRSCARF button
(Y page 89). 108
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Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehicle has been delivered or after repairs. Full system
effectiveness is not reached until the end of this
teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal. The first 1,000 miles (1,500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its per-
formance in the future.
R You should therefore drive at varying vehicle
and engine speeds for the first 1,000 miles
(1,500 km).
R Ideally, for the first 1,000 miles (1,500 km),
drive in program C.
R Do not drive faster than 85 mph (140 km/h)
for the first 1,000 miles (1,500 km).
R Only briefly allow the engine to reach a max-
imum engine speed of 4,500 rpm briefly.
R Avoid heavy loads, e.g. driving at full throttle,
during this period.
R Do not exceed 00C3of the maximum permitted
engine speed for each gear.
R Shift up into manual mode Mand temporary
manual drive program in good time.
R Do not carry out a RACE START.
R Do not manually shift to a lower gear to brake
the vehicle.
R Try to avoid depressing the accelerator pedal
beyond the pressure point (kickdown).
After 1,000 mile s(1,500 km), you can increase
the engine speed gradually and accelerate the
vehicle to full speed.
You should also observe these notes on break-
ing in if the engine or parts of the drive train on your vehicle have been replaced.
Always observe the respective maximum per-
missible speed. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off. Driving
109Driving and parking Z
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!
Do not warm up the engine while stationary.
Pull away immediately. Avoid high engine
speeds and full throttle until the engine has
reached its operating temperature.
In vehicles with automatic transmission,
engage positions P and R only when the vehi-
cle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
! During a cold start with low engine oil tem-
peratures (below 32 ‡) (0 †), the maximum
engine speed is restricted in order to protect
the engine. To protect the engine and main-
tain smooth engine operation, avoid driving at full throttle when the engine is cold. Key positions
Start/Stop button General notes
All vehicles are equipped with a Start/Stop but-
ton.
The Start/Stop button is located in the center
console and is illuminated when the vehicle is
unlocked.
The SmartKey must be in the vehicle.
Pressing the Start/Stop button several times in succession corresponds to the different Smart-
Key positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
If there is a SmartKey in the ignition lock, this
takes precedence over the KEYLESS-GO start
function.
To start the vehicle without actively using the
SmartKey:
R the SmartKey must be in the vehicle
R the vehicle must not be locked with the
SmartKey or KEYLESS-GO (Y page 67)Do not keep the SmartKey:
R with electronic devices, e.g. a mobile phone
or another SmartKey
R with metallic objects, e.g. coins or metal foil
R inside metallic objects, e.g. a metal case
This can affect the functionality of the Smart-
Key.
If you lock the vehicle with the SmartKey remote control or with KEYLESS-GO, after a short time:
R you will not be able to switch on the ignition
with the Start/Stop button
R you will no longer be able to start the engine
with the Start/Stop button until the vehicle is
unlocked again
If you lock the vehicle centrally using the button
on the driver's door (Y page 72), you can con-
tinue to start the engine with the Start/Stop
button.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with the Start/Stop button As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Further information on situations where an
indicator lamp either fails to go out after starting the engine or lights up while driving
(Y page 200).
If Start/Stop button 0043has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
X To switch on the power supply: press
Start/Stop button 0043once.
The power supply is switched on. You can now
activate the windshield wipers, for example. If you press Start/Stop button 0043twice in this 110
DrivingDriving and parking