Page 114 of 454

Folding down the seats
The seats can be folded down electrically if
the vehicle is stationary and the respective
rear door is open.
X
Press button 0002.
The head restraint retracts, the backrest
folds forwards and the seat folds forwards.
The seat can be manually returned to its
initial position.(Y page 108) Adjusting the multicontour seat
You can set the multicontour seat using
COMAND .See the separate COMAND
Operating Instructions. Adjusting the 4-way lumbar support
0002
To raise the backrest contour
0003 To soften the backrest contour
0021 To lower the backrest contour
0020 To harden the backrest contour You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back. Switching the seat heating on/off
Activating/deactivating G
WARNING
Repeatedly switching on the seat heating can
cause the seat cushion and backrest pads to
become very hot. The health of persons with
limited temperature sensitivity or a limited
ability to react to excessively high
temperatures 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. Driver's and front-passenger seat
Rear seats
The three red indicator lamps in the button
indicate the heating level you have selected.112
SeatsSeats, steering wheel and mirrors
Page 115 of 454
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
approximately 35 minutes after it is set to
level 1.
X Make sure that the SmartKey is in position
1 or 2in the ignition lock.
X To switch on: press button0002repeatedly
until the desired heating level is set.
X To switch off: press button0002repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off. Seats
113Seats, steering wheel and mirrors Z
Page 116 of 454

Problems with the seat heating
Problem Possible causes/consequences and
0001 Solutions
The seat heating has
switched off
prematurely or cannot
be switched on. The on-board voltage is too low because too many electrical
consumers are switched on.
X
Switch 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 will
switch back on automatically. Switching the seat ventilation on/off
Activating/deactivating The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
X
Make sure that the SmartKey is in position
2in the ignition lock.
X To switch on: press button0002repeatedly
until the desired ventilation level is set.
X To switch off: press button0002repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 93). The seat
ventilation of the driver's seat
automatically switches to the highest level. 114
SeatsSeats, steering wheel and mirrors
Page 118 of 454
Adjusting the steering wheel
electrically
0002
To adjust the steering wheel height
0003 To adjust the steering wheel position
(fore-and-aft adjustment)
The steering wheel can also be adjusted when
the SmartKey is removed from the ignition
lock.
i Further related subjects:
R EASY-ENTRY/EXIT feature
(Y page 117)
R Storing settings (Y page 121)Steering wheel heating
Activating/deactivating X
Make sure that the SmartKey is in position
2in the ignition lock.
X To switch on/off: turn the lever in the
direction of arrow 0002or0003.
Indicato rlamp 0021lights up or goes out. Vehicles without KEYLESS-GO
:when you
remove the SmartKey from the ignition lock,
the steering wheel heating is deactivated.
Vehicles with KEYLESS-GO: when you switch
off the ignition and open the driver's door, the
steering wheel heating is deactivated. 116
Steering wheelSeats, steering wheel and mirrors
Page 119 of 454

Problems with the steering wheel heating
Problem Possible causes/consequences and
0001 Solutions
The steering wheel
heating has switched
off prematurely or
cannot be switched on. The on-board voltage is too low because too many electrical
consumers are switched on.
X
Switch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting. EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants –particularly childre n–could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is
making adjustments, make sure that no one
has any body parts in the sweep of the
steering wheel.
If somebody becomes trapped:
R press one of the memory function position
buttons, or
R move the switch for steering wheel
adjustmen tinthe opposite direction to that
in which the steering wheel is moving.
The adjustment process is stopped. G
WARNING
If children activate the EASY-ENTRY/EXIT
feature, 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. G
WARNING
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 (Y page 281).
Position of the steering wheel when the
EASY-ENTRY/EXIT featurei s active The steering wheel swings upwards when
you:
R
remove the SmartKey from the ignition lock
R open the driver's door with KEYLESS-GO in
position 1
R open the driver's door and the SmartKey is
in position 0or 1in the ignition lock
i The steering wheel only moves upwards if
it has not already reached the upper end
stop.
Position of the steering wheel for
driving The steering wheel is moved to the last
selected position when:
R
the driver's door is closed
R you insert the SmartKey into the ignition
lock
or
R you press the Start/Stop button once on
vehicles with KEYLESS-GO
When you close the driver's door with the
ignition switched on, the steering wheel is Steering wheel
117Seats, steering wheel and mirrors Z
Page 150 of 454

0026
Switches rear-compartment climate control on/off (Y page 150)
0027 Reduces the airflow (Y page 154)Control panel for 3-zone automatic climate control with additional rear-
compartment climate control Canada only
Front control panel
0002 Sets the temperature, left ( Ypage 153)
0003 Defrosts the windshield (Y page 155)
0021 Switches the ZONE function on/off (Y page 155)
0020 Activates/deactivates cooling with ai rdehumidification ( Ypage 151) or activates/
deactivates the residual heating function (Y page 157)
001E Switches the rear window defroster on/off(Y page 156)
001F Sets the temperature, right (Y page 153)
0013 Switches rear-compartment climate control on/off
0014 Switches climate control on/off (Y page 150)
0015 Sets the air distribution (Y page 154)
0016 Increases the airflow (Y page 154)
0017 Reduces the airflow ( Ypage 154)
0018 Display
0019 Adjusts the climate control settings (Y page 153)
001A Activates/deactivates air-recirculation mode(Y page 157)
001B Sets climate control to automatic (Y page 152)
Rear control panel
001C Increases the airflow (Y page 154)148
Overview of climate control systemsClimate control
Page 151 of 454

001D
Sets the temperature ( Ypage 153)
0023 Sets rear-compartment climate control to automatic ( Ypage 152)
0024 Directs the airflow through the rear air vents (Y page 154)
0025 Directs the airflow through the footwell vents (Y page 154)
0026 Switches rear-compartment climate control on/off (Y page 150)
0027 Reduces the airflow (Y page 154)USA only
Front control panel
0002 Sets the temperature, left ( Ypage 153)
0003 Defrosts the windshield (Y page 155)
0021 Switches maximum cooling MAX COOL on/off ( Ypage 155)
0020 Activates/deactivates cooling with ai rdehumidification ( Ypage 151) or activates/
deactivates the residual heating function (Y page 157)
001E Switches the rear window defroster on/off(Y page 156)
001F Sets the temperature, right (Y page 153)
0013 Switches the ZONE function on/off (Y page 155)
0014 Switches rear-compartment climate control on/off (Y page 150)
0015 Sets the air distribution (Y page 154)
0016 Increases the airflow (Y page 154)
0017 Reduces the airflow ( Ypage 154) or switches off climate control
0018 Display
0019 Adjusts the climate control settings (Y page 153)
001A Activates/deactivates air-recirculation mode(Y page 157)
001B Sets climate control to automatic (Y page 152)
Rear control panel Overview of climate control systems
149Climate control
Page 160 of 454

It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
X
To activate: press the0003/0005 button.
The indicator lamp in the 0003/0005
button lights up.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
mediums peed.
X To deactivate: press the0003/0005
button.
The indicator lamp in the 0003/0005
button goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is activated Setting 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, redirec
tthe 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:
R keep 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.
R never cover the air vents or air intake grilles
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position. Setting the center air vents
0002
Center air vent, left
0003 Center air vent, right
0021 Center vent thumbwheel, right
0020 Center vent thumbwheel, left
X To open/close: turn thumbwheels 0021
and 0020to the right or left. 158
Setting the air ventsClimate control