
limited temperature sensitivity or a limited
ability to react to excessively high tempera-
tures may be affected or they may even suffer
burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly.
For vehicles equipped with the Warmth Comfort
package: the armrest in the door and the center
console can also be heated when you switch on
the seat heating of one of the front seats. You
can set this via the multimedia system; see the
Digital Operator's Manual.
The three red indicator lamps in the button indi-
cate the heating level you have selected.
The system automatically switches down from
level 3to level 2after approximately eight
minutes.
The system automatically switches down from
level 2to level 1after approximately ten
minutes.
The system automatically switches off approx-
imately 20 minutes after it is set to level 1.
Vehicles with the Seat Heating Plus package:
you can set the distribution of the heated sec-
tions of the seat cushion and backrest via the
multimedia system; see the Digital Operator's
Manual.
Vehicles with a Rear Seat Entertainment System
and electric seat adjustment: you can set the
distribution of the heated sections of the seat
cushions and backrests on the rear seats via the
Rear Seat Entertainment System; see the Digital
Operator's Manual.
Front seats
XSwitch on the power supply or the ignition
(Ypage 146).
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.
Rear seats
XSwitch on the power supply or the ignition
(Ypage 146).
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.
Switching the seat ventilation on/off
Front seats
The three blue indicator lamps in the buttons
indicate the blower setting you have selected.
Seats113
Seats, steering wheel and mirrors
Z 

XSwitch on the power supply or the ignition
(Ypage 146).
XTo switch on:press button:repeatedly
until the desired blower setting 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 92). The seat ventilation of
the driver's seat automatically switches to the
highest level.
iWhen the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
Rear seat
Switching the seat ventilation in the rear com-
partment on/off
XSwitch on the power supply or the ignition
(Ypage 146).
XTo switch on: press button:repeatedly
until the desired blower setting 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.
iWhen the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
Problems with the seat heating/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 can be switched back on manually.
114Seats
Seats, steering wheel and mirrors 

Steering wheel
Important safety notes
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
Children could injure themselves if they
adjust the steering wheel. 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.
The electrically adjustable steering wheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel
:Adjusts the steering wheel height
;Adjusts the steering wheel position (fore-
and-aft adjustment)
iFurther related subjects:
REASY-ENTRY/EXIT feature (Ypage 116)
RStoring settings (Ypage 120)
Steering wheel heating
Switching on/off
XSwitch on the ignition (Ypage 146).
XTo switch on/off: turn the lever in the direc-
tion of arrow :or;.
Indicator lamp =lights up or goes out.
If you switch off the ignition, the steering wheel
heating is deactivated.
Steering wheel115
Seats, steering wheel and mirrors
Z 

Problems with the steering wheel heating
ProblemPossible causes/consequences andMSolutions
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 and the driver's seat, 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 seat and
the steering wheel.
If there is a risk of becoming trapped by
Rthe steering wheel: move the steering
wheel adjustment lever.
Rthe seat: press the switch for seat adjust-
ment.
The adjustment process is stopped.
You can stop the adjustment process by press-
ing one of the memory function's 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 using the multimedia sys-
tem (see the Digital Operator's Manual).
Position of the steering wheel and the
driver's seat when the EASY-ENTRY/
EXIT feature is active
The steering wheel tilts upwards and the driver's seat moves backwards if you:
Rremove the SmartKey from the ignition lock
Rwith the start/stop button: open the driv-
er's door; the ignition must be switched off
Rwith the SmartKey: open the driver's door;
the SmartKey must be in position 0or 1in the
ignition lock (
Ypage 145)
iThe steering wheel only tilts upwards and
the driver's seat only moves backwards if the
driving position is stored after the seat or
steering column has been adjusted.
The last position of the steering wheel or seat is
stored if:
Rthe ignition is switched off
Rthe setting is stored with the memory function
(Ypage 120).
iThe steering wheel only moves upwards if it
has not already reached the upper stop. The
driver's seat only moves backwards if it is not
already in the rearmost position.
116Steering wheel
Seats, steering wheel and mirrors 

Memory function
Important safety notes
GWARNING
If you use the memory function on the driver's side while driving, you could lose control of
the vehicle as a result of the adjustments
being made. There is a risk of an accident.
Only use the memory function on the driver's
side when the vehicle is stationary.
GWARNING
When the memory function adjusts the seat or steering wheel, you and other vehicle occu-
pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped.
GWARNING
Children could become trapped if they acti-
vate the memory function, 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.
The memory function can be used at any time,
even if the power supply is switched off.
Storing settings
The memory function is only available in vehicles
with the memory package.
With the memory function, you can store up to
three different settings, e.g. for three different
people. The following settings are stored as a single
memory preset:
Rseat, backrest, head restraint position and
contour of the backrest in the lumbar region
Ractive multicontour seat: side bolsters of the
backrest, shoulder of the backrest, contour of
the backrest, dynamic function level
Rseat heating: distribution of the heated sec-
tions of the seat cushion and backrest
Rdriver's side: position of the exterior mirrors
on the driver's and front-passenger sides
Rposition of the head-up display
XAdjust the seat accordingly (Ypage 101).
XOn the driver's side, adjust the steering wheel
(Ypage 115) and the exterior mirrors
(Ypage 117).
XPress memory button Mand then press one of
the memory position buttons 1,2or 3within
three seconds.
The settings are stored in the selected preset
position. A tone sounds when the settings
have been completed.
Calling up a stored setting
XPress and hold the relevant memory position
button 1,2or 3until the following compo-
nents are in the saved position:
RSeat
RSteering wheel
RExterior mirrors
RHead-up Display
iIf you release the storage position button,
the seat, steering wheel and mirror setting
functions stop immediately. Adjustment of
the active multicontour seat or the 4-way lum-
bar support is still carried out.
120Memory function
Seats, steering wheel and mirrors 

Memory function in the rear compart-
ment
Important safety notes
GWARNING
When the memory function adjusts the seat or steering wheel, you and other vehicle occu-
pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped.
GWARNING
Children could become trapped if they acti-
vate the memory function, 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.
General notes
The settings for the rear seat and the front-
passenger seat can be stored using the rear-
compartment memory function.
RIf the indicator lamp in the vbutton is not
lit, store the rear seat settings.
RIf the indicator lamp in the vbutton lights
up, store the front-passenger seat and rear
seat settings. Both the front-passenger and
rear seat are taken into account with this set-
ting. Depending on the equipment in the vehi-
cle, two or three memory positions can be
stored for the front-passenger and rear seats.
Storing settings
General notes
With the memory function in the rear, you can
store up to three different settings, e.g. for three
different people. The following settings are stored as a single
memory preset:
Rposition of the seat, backrest and head
restraint
Ractive multicontour seat: the seat cushions of
the backrest as well as the contour of the
backrest in the lumbar and shoulder regions
Rseat heating: distribution of the heated sec-
tions of the seat cushion and backrest if the
indicator lamp in the
vbutton is not lit
The following settings are also stored to a mem-
ory position, if the indicator lamp in the v
button is lit:
Rposition of the footrest for the front-
passenger seat, if available
Rposition of the screen, if available
Vehicles without rear reclining seat
The power supply or the ignition must be
switched on so that the front-passenger seat
can be selected (
Ypage 146).
Selects rear-compartment seat
XPress the vbutton repeatedly until the
indicator lamp in the button is not lit.
The rear-compartment seat is selected if the
indicator lamp in the button is not lit.
XAdjust the rear seat accordingly
(Ypage 102).
XPress memory button Mand one of the stor-
age position buttons 1,2or 3within three
seconds.
The settings are stored in the selected stor-
age position.
Memory function in the rear compartment121
Seats, steering wheel and mirrors
Z 

Defrosting thewindshield
General notes
You can use this function to defrost th ewind-
shield or to clear afogge dup windshield or fron t
sid ewindows on th einside.
Switc hof fth e"Windshield defrosting" function
as soo nas th ewindshield is clear again .
Switchingth e"Windshield defrosting"
function on or off
XTur nth eSmartKey to position 2in th eignition
loc k (Ypage 145).
XTo activate :press th e¬ rocker switch on
th efron tcontro lpanel up or down .
The indicator lamp in th e¬ rocker switch
lights up.
The climat econtro lsyste mswitches to th e
followin gfunctions:
Rhig hairflow
Rhig htemperature
Rair distribution to th ewindshield and fron t
sid ewindows
Rair-recirculation mode of f
Rwindshield heatingon
Rcoolin gwit hair dehumidification on
XTo deactivate :press th e¬ rocker switch
up or down .
The indicator lamp in th e¬ rocker switch
goe sout .The previously selecte dsetting sare
restored .Air-recirculation mode remain s
deactivated.
Defrosting th ewindows
Windows fogged up on th einside
XActivat eth e"Coolin gwit hair dehumidifica-
tion "function wit hth eÁ rocker switch .
or
XActivat eth e"Coolin gwit hair dehumidifica-
tion "function via th emultimedia system; see
th eDigital Operator's Manual.
XSwitc hon automatic mode usin gth eÃ
rocker switch .
XIf thewindows continue to fo gup: activat eth e
"Windshield defrosting" function usin gth e
¬ rocker switch .The windshield heatin gis
switched on .
iYou should only selec tthis setting until th e
windshield is clear again .
Windows fogged up on th eoutsid e
XActivat eth ewindshield wipers .
XSwitchon automatic mode usin gth eÃ
rocker switch .
iIf you clean th ewindows regularly, they do
no tfo gup so quickly.
Rea rwindow defroster
General notes
The rea rwindow defroster has ahig hcurren t
draw. You should therefore switch it of fas soo n
as th erea rwindow is clear .Otherwise ,th erea r
window defroster switches of fautomatically
after severa lminutes.
If th ebattery voltage is to olow, th erea rwindow
defroster may switch off.
Activating or deactivating
XTur nth eSmartKey to position 2in th eignition
loc k (Ypage 145).
XPress th e¤ rocker switch up or down .
The indicator lamp in th e¤ rocker switch
lights up or goe sout .
Operating the climate control systems139
Climate control 

Problems with the rear window defroster
ProblemPossible causes/consequences andMSolutions
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 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
XTurn the SmartKey to position 2in the ignition
lock (Ypage 145).
XTo activate: press thegrocker switch up
or down.
The indicator lamp in the grocker switch
lights up.
Air-recirculation mode switches on automati-
cally:
Rat high outside temperatures
Rat high levels of pollution
Rin a tunnel
The indicator lamp in the grocker switch is
not lit when automatic air-recirculation mode is
activated. Outside air is added after about
30 minutes.
XTo deactivate: press thegrocker switch
up or down.
The indicator lamp in the grocker switch
goes out. Air-recirculation mode deactivates automati-
cally:
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
Vehicles with rear-compartment climate
control: once the engine is switched off, it is
possible to make use of the residual heat of the
engine to continue heating or ventilating the
rear and front compartment of the vehicle for
approximately 15 minutes. If the "Residual heat"
function is set for only the front or only the rear compartment, it is possible to continue heating
or ventilating for approximately 30 minutes.
Vehicles without rear-compartment climate
control: once the engine is switched off, it is
possible to make use of the residual heat of the
engine to continue heating or ventilating the
front compartment of the vehicle for approx-
imately 30 minutes.
The heating or ventilation time depends on the
temperature that has been set.
140Operating the climate control systems
Climate control