The system automatically switches down from
level2to level 1after approximately ten
minutes.
The system automatically switches off approx-
imately 35 minutes after it is set to level 1.
XTurn the SmartKey to position1or 2in the
ignition lock (Ypage 125).
XTo switch on: press button:repeatedly
until the desired heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
heating may switch off.
Activating and deactivating seat venti-
lation
The three blue indicator lamps in the buttons
indicate the ventilation level you have selected.
XTurn the SmartKey to position 1or 2in the
ignition lock (Ypage 125).
XTo switch on: press button:repeatedly
until the desired ventilation level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
ventilation may switch off.
iYou can open the side windows and the slid-
ing sunroof using the "Convenience opening"
feature (
Ypage 84). The seat ventilation of
the driver's seat automatically switches to the
highest level.
Problems with the seat heating or seat ventilation
ProblemPossible causes/consequences and MSolutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation will switch back on automatically.
96Seats
Seats, steering wheel and mirrors
Steering wheel heating
Switching on/offXTurn the SmartKey to position 2in the ignition
lock (Ypage 125).
XTo switch on/off: turn the lever in the direc-
tion of arrow :or;.
Indicator lamp =lights up or goes out.
Vehicles with KEYLESS-GO: when you switch off
the ignition and open the driver's door, the
steering wheel heating is deactivated.
Vehicles without KEYLESS-GO: when you
remove the SmartKey from the ignition lock, the steering wheel heating is deactivated.
Problems with the steering wheel heating
ProblemPossible causes/consequences and MSolutions
The steering wheel heat-
ing has switched off pre-
maturely or cannot be
switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
EASY-ENTRY/EXIT feature
Important safety notes
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
Move the steering wheel adjustment lever if
there is a risk of entrapment by the steering
wheel. The adjustment process is stopped.
Press one of the memory function position but-
tons. This function is only available on vehicles
with memory function.
GWARNING
If children activate the EASY-ENTRY/EXIT fea-
ture, they can become trapped, particularly
when unattended. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There is a risk of an
accident.
Always wait until the adjustment process is
complete before driving off.
The EASY-ENTRY/EXIT feature makes getting in
and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board computer
(
Ypage 217).
98Steering wheel
Seats, steering wheel and mirrors
Rear control panel
:Sets rear-compartment climate control to automatic
;Switches the rear climate control on/off
=Directs the air distribution through the rear air vents
?Switches the seat heating on the right-hand side on/off
ADirects the air distribution through the footwell vents
BSwitches the seat heating on the left-hand side on/off
Control panel for 3-zone automatic climate control
USA only
Front control panel
:Sets the temperature, left (Ypage 119)
;Defrosts the windshield (Ypage 120)
=Switches the maximum cooling MAX COOL on or off (Ypage 120)
?Switches cooling with air dehumidification on/off (Ypage 118)
ASwitches the rear window defroster on/off (Ypage 121)
BSets the temperature, right (Ypage 119)
CSwitches the ZONE function on/off (Ypage 120)
DActivates/deactivates climate control (Ypage 117)
ESets the air distribution (Ypage 119)
Overview of climate control systems115
Climate control
FIncreases the airflow (Ypage 119)
GReduces the airflow (Ypage 119)
HDisplay
IAdjusts the climate mode settings (Ypage 118)
JSwitches air-recirculation mode on/off (Ypage 121)
KSets climate control to automatic (Ypage 118)
Rear control panel
LIncreases the airflow (Ypage 119)
MSets the temperature (Ypage 119)
NSets rear-compartment climate control to automatic (Ypage 118)
ODirects the airflow through the rear air vents (Ypage 119)
PSwitches the seat heating on the right-hand side on/off (Ypage 95)
QDirects the airflow through the footwell vents (Ypage 119)
RSwitches the rear climate control on/off (Ypage 117)
SReduces the airflow (Ypage 119)
TSwitches the seat heating on the left-hand side on/off (Ypage 95)
Canada only
Front control panel
:Sets the temperature, left (Ypage 119)
;Defrosts the windshield (Ypage 120)
=Switches the residual heat on or off (Ypage 121)
?Switches cooling with air dehumidification on/off (Ypage 118)
ASwitches the rear window defroster on/off (Ypage 121)
BSets the temperature, right (Ypage 119)
CSwitches the ZONE function on/off (Ypage 120)
DActivates/deactivates climate control (Ypage 117)
ESets the air distribution (Ypage 119)
FIncreases the airflow (Ypage 119)
GReduces the airflow (Ypage 119)
HDisplay
116Overview of climate control systems
Climate control
IAdjusts the climate mode settings (Ypage 118)
JSwitches air-recirculation mode on/off (Ypage 121)
KSets climate control to automatic (Ypage 118)
Rear control panel
LIncreases the airflow (Ypage 119)
MSets the temperature (Ypage 119)
NSets rear-compartment climate control to automatic (Ypage 118)
ODirects the airflow through the rear air vents (Ypage 119)
PSwitches the seat heating on the right-hand side on/off (Ypage 95)
QDirects the airflow through the footwell vents (Ypage 119)
RSwitches the rear climate control on/off (Ypage 117)
SReduces the airflow (Ypage 119)
TSwitches the seat heating on the left-hand side on/off (Ypage 95)
Information about using automatic
climate control
Optimum use of the automatic climate
control
The following contains notes and recommenda-
tions on optimum use of the dual-zone or 3-zone
automatic climate control.
RYou can switch on climate control by using the
à and¿ orà andÁ buttons.
The indicator lamps in the Ãand
¿ buttons or the ÃandÁ buttons
light up.
RVehicles with 3-zone climate control:in
automatic mode, you can also use the
ñ button to set a climate mode (FOCUS/
MEDIUM/DIFFUSE). The MEDIUM level is
recommended.
RSet the temperature to 72 ‡ (22 †).
ROnly use the "Windshield defrosting" function
briefly until the windshield is clear again.
ROnly 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.
RVehicles with 3-zone climate control:use
the ZONE function to adopt the temperature
settings on the driver's side for the front-
passenger side and the rear compartment as
well. The indicator lamp above the ábut-
ton goes out.
RVehicles with 3-zone climate control:use
the "residual heat" function if you want to heat or ventilate the vehicle interior when the igni-
tion is switched off. The residual heat functio
n
ca
n only be activated or deactivated with the
ignition switched off.
RIf you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display. You will see the current set-
tings of the various climate control functions.
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 (
Ypage 130).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
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
Activate climate control primarily using the
à button (
Ypage 118).
In the rear compartment, you can also switch
climate control on and off using the Ãand
^ buttons.
Operating the climate control systems117
Climate control
iIf 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.
Switching on/off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 125).
XPress the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
Problems with the rear window defroster
ProblemPossible causes/consequences and MSolutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.The battery has not been sufficiently charged.
XSwitch 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 deactivate the flow of fresh air if
unpleasant odors are entering 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.
Switching on/off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 125).
XTo activate: press thedbutton.
The indicator lamp in the dbutton lights
up.
iIn the event of high pollution levels (3-zone
automatic climate control only) or at high out-
side temperatures, air-recirculation mode is
automatically activated. When air-recircula-
tion mode is activated automatically, the indi-
cator lamp in the dbutton is not lit. Outside air is added after about 30 minutes.
XTo deactivate:
press thedbutton.
The indicator lamp in the dbutton goes
out.
iAir-recirculation mode deactivates auto-
matically:
Rafter approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
Rafter approximately five minutes if cooling
with air dehumidification is deactivated
Rafter approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with air dehumidifica-
tion" function is activated
Switching the residual heat on or off
General notes
The residual heat function is only available on
vehicles for Canada.
It is possible to make use of the residual heat of
the engine to continue heating the stationary
vehicle for up to 30 minutesafter the engine has
Operating the climate control systems121
Climate control
been switched off. The heating time depends on
the set interior temperature.
Switching on/off
XTo activate:press theÌorÁ button.
The indicator lamp in the ÌorÁ button
lights up.
iThe blower will run at a low speed regardless
of the airflow setting.
iIf you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
XTo deactivate: press theÌorÁ but-
ton.
The indicator lamp in the ÌorÁ button
goes out.
Residual heat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Ionization
Ionization is used to purify the air in the vehicle
interior and attain an improved interior climate.
The ionization of the interior air is odorless and
cannot be perceived directly in the vehicle inte-
rior.
You can switch ionization on and off via the mul-
timedia system (see the separate operating
instructions).
Ionization can only be operated when the auto-
matic climate control is switched on. The side air
vent on the driver's side must be open.
Setting the air vents
Important safety notes
GWARNING
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.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
Rkeep the air inlet grille on the hood and in the engine compartment on the front-passenger
side free of blockages, such as ice, snow or
leaves.
Rnever cover the air vents or air intake grilles in
the vehicle interior.
iFor virtually draft-free ventilation, adjust the
sliders of the air vents to the center position.
Setting the center air vents
:Center air vent, left
;Center air vent, right
=Center vent thumbwheel, right
?Center vent thumbwheel, left
XTo open or close: turn thumbwheels=
and ?to the left or right.
122Setting the air vents
Climate control
Setting the side air vents
Example
:
Side window defroster vent
;Side air vent, left
=Thumbwheel for side air vent
XTo open or close:turn thumbwheel=up or
down.
Setting the glove box air vent
!
Close the air vent when heating the vehicle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, tempera-
ture-sensitive items stored in the glove box
could be damaged.
:Air vent control
;Air vent
When the climate control system is activated,
the glove box can be ventilated, for instance to
cool its contents. The level of airflow depends on the airflow and air distribution settings.
XTo open or close: turn thumbwheel:to the
right or left.
Setting the rear-compartment air
vents
Setting the center vents in the rear com-
partment
Example: center vents with rear control panel
:
Rear-compartment air vent thumbwheel
;Rear-compartment air vent, right
=Rear control panel
?Rear-compartment air vent, left
XTo open or close: turn thumbwheel:up or
down.
Setting the B-pillar air vent
:B-pillar air vent
;Thumbwheel for B-pillar air vent
XTo open or close: turn thumbwheel;to the
left or right.
Setting the air vents123
Climate control
Z