
Problems with the seat ventilation
Problem
Possible causes/consequences and
M
MSolutions The seat ventilation has
switched off prematurely
or cannot be switched
on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat ventilation will
switch back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock. Adjusting the steering wheel man-
ually
G
WARNING
The steering wheel may move unexpectedly if you adjust it while driving. This could cause
you to lose control of the vehicle. There is a
risk of an accident. Make sure that the steering wheel is locked
before driving off. Never unlock the steering
wheel when the vehicle is in motion. :
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position (fore-
and-aft adjustment)
X Push release lever :down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired posi-
tion.
X Push release lever :up as far as it will go.
The steering column is locked.
X Check if the steering column is locked. When
doing so, try to push the steering wheel up or
down or try to move it in the fore-and-aft
direction. 108
Steering wheelSeats, steering wheel and mirrors

Adjusting the steering wheel electri-
cally :
To adjust the steering wheel height
; To adjust the steering wheel position (fore-
and-aft adjustment)
The steering wheel can also be adjusted when
the key is removed from the ignition lock.
i Further related subjects:
R EASY-ENTRY/EXIT feature (Y page 110)
R Storing settings (Y page 114) Steering wheel heating
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 146).
X To 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 switched off.
Vehicles without KEYLESS-GO: when you
remove the key from the ignition lock, the steer-
ing wheel heating is switched off. Steering wheel
109Seats, steering wheel and mirrors Z

Problems with the steering wheel heating
Problem
Possible causes/consequences and
M
MSolutions The steering wheel heat-
ing has switched itself
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating 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 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 a memory function. G
WARNING
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 key with you and lock the vehicle. Never leave
children unattended 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 248).
Position of the steering wheel when the EASY-ENTRY/EXIT feature is active The steering wheel tilts upwards if you:
R remove the key from the ignition lock
R open the driver's door and KEYLESS-GO is in
position 1
R open the driver's door and the key is in posi-
tion 0or 1in the ignition lock
i The steering wheel only moves upwards if it
has not already reached the upper stop.
Position of the steering wheel for driv-
ing The steering wheel is moved to the previously
set position if:
R the driver's door is closed and
R you insert the key into the ignition lock
or
R you press the Start/Stop button once on vehi-
cles with KEYLESS-GO
If you close the driver's door with the key inser- ted in the ignition lock, the steering wheel is
automatically moved to the previously set posi-
tion.
The last position of the steering column is stored when you:
R switch the ignition off
R save the setting with the memory function
(Y page 114). 110
Steering wheelSeats, steering wheel and mirrors

Crash-responsive EASY-EXIT feature
If the crash-responsive EASY-EXIT feature is trig-
gered in an accident, the steering column will
move upwards when the driver's door is opened.
This occurs irrespective of the position of the
key in the ignition lock. This makes it easier to
exit the vehicle and rescue the occupants.
The crash-responsive EASY-EXIT feature is only
operational if the EASY-EXIT/ENTRY feature is
activated in the on-board computer
(Y page 248). Mirrors
Rear-view mirror
X
Anti-dazzle mode: pivot anti-dazzle
switch :forwards or back. Exterior mirrors
Adjusting the exterior mirrors G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
The exterior mirrors reduce the size of the
image. Objects visible in the mirrors are
closer than they appear. You could misjudge
the distance from road users driving behind
you when changing lanes, for instance. There is a risk of an accident.
You should therefore always look over your
shoulder to determine the actual distance
from road users driving behind you. X
Turn the key to position 1or 2in the ignition
lock (Y page 146).
X Press button :for the left-hand exterior mir-
ror or button ;for the right-hand exterior
mirror.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected mirror using
adjustment button =as long as the indicator
lamp is lit.
X Press adjustment button =up, down, or to
the left or right until you have adjusted the
exterior mirror to the correct position. You
should have a good overview of traffic condi-
tions.
The convex exterior mirrors provide a larger field
of vision.
The exterior mirrors are automatically heated if
the rear window heating is switched on and the outside temperature is low. Mirrors
111Seats, steering wheel and mirrors Z

Control panel for THERMATIC automatic climate control (2-zone)
Front control panel
: To set the temperature, left (Y page 132)
; To demist the windscreen (Y page 134)
= To switch the ZONE function on/off (Y page 134)
? To activate/deactivate cooling with air dehumidification (Y page 130)
To switch the residual heat on/off (Y page 137)
A To switch the rear window heating on/off (Y page 135)
B To set the temperature, right (Y page 132)
C To switch air-recirculation mode on/off (Y page 136)
D To set the air distribution (Y page 133)
E To increase the airflow (Y page 133)
F To reduce the airflow (Y page 133)
G To switch the climate control on/off (Y page 130)
H To set climate control to automatic mode (Y page 132)Rear control panel
: To control the rear-compartment climate control automatically
; To switch the rear climate control on/off
= To direct the airflow through the rear air vents
? To switch the seat heating on the right-hand side on/off Overview of climate control systems
127Climate control

A
To direct the airflow through the footwell vents
B To switch the seat heating on the left-hand side on/off Information on using THERMATIC
automatic climate control
The following contains notes and recommenda-
tions on optimum use of THERMATIC automatic climate control.
R Activate climate control using the Ãand
Á buttons. The indicator lamps in the
à andÁ buttons light up.
R Set the temperature to 22 †.
R Only use the "Windscreen demisting" function
briefly until the windscreen is clear again.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odours or when
in a tunnel. The windows could otherwise mist
up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the temper-
ature settings on the driver's side for the
front-passenger side as well. The indicator
lamp above the ábutton goes out.
R If 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 only operates at a reduced capacity. If
you require the full climate control output, you
can switch off the ECO start/stop function by
pressing the ECO button (Y page 151).128
Overview of climate control systemsClimate control

Control panel for THERMOTRONIC automatic climate control (3-zone)
Front control panel
: To set the temperature, left (Y page 132)
; To demist the windscreen (Y page 134)
= To switch the residual heat on/off (Y page 137)
? To activate/deactivate cooling with air dehumidification (Y page 130)
A To switch the rear window heating on/off (Y page 135)
B To set the temperature, right (Y page 132)
C To switch the ZONE function on/off (Y page 134)
D To switch the climate control on/off (Y page 130)
E To set the air distribution (Y page 133)
F To increase the airflow (Y page 133)
G To reduce the airflow (Y page 133)
H Display
I To set the climate mode (Y page 132)
J To switch air-recirculation mode on/off (Y page 136)
K To set climate control to automatic mode (Y page 132)
Rear control panel
L To increase the airflow (Y page 133)
M To set the temperature (Y page 132)
N To control the rear-compartment climate control automatically (Y page 132)
O To direct the airflow through the rear air vents (Y page 133)
P To switch the seat heating on the right-hand side on/off (Y page 105)
Q To direct the airflow through the footwell vents (Y page 133)
R To switch the rear climate control on/off (Y page 130)
S To reduce the airflow (Y page 133)
T To switch the seat heating on the left-hand side on/off (Y page 105) Overview of climate control systems
129Climate control

Rear window heating
General notes The rear window heating has a high current
draw. You should therefore switch it off as soon
as the window is clear. It otherwise switches off automatically after several minutes.
If the battery voltage is too low, the rear window
heating may switch off.
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 146).
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out. Operating the climate control system
135Climate control