Problems with the seat ventilation
ProblemPossible causes/consequences andMSolutions
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.
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 ventilation can be
switched back on.
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
:To adjust the steering wheel position (fore-
and-aft adjustment)
;To adjust the steering wheel height
iFurther related subjects:
REASY-ENTRY/EXIT feature (Ypage 122)
RStoring settings (Ypage 126)
ROperating the on-board computer
(Ypage 257).
Steering wheel heating
Switching on/off
120Steering wheel
Seats, steering wheel and mirrors
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.
Press one of the memory function position
switches. The adjustment process is stopped.
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 separate operating instructions).
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 KEYLESS-GO: open the driver's door;
KEYLESS-GO must be in position 1
Rwith the SmartKey:open the driver's door;
the SmartKey must be in position 0or 1in the
ignition lock (
Ypage 162)
Ropen the driver's door when the ignition is
switched off
iThe steering wheel only tilts upwards and
the driver's seat only moves backwards if the
driving position is stored after seat or steering wheel adjustment.
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 126).
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.
122Steering wheel
Seats, steering wheel and mirrors
Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific differences are possible. Please note
that your vehicle may not be equipped with all
features described. This also applies to
safety-related systems and functions.
iRead the information on qualified specialist
workshops (Ypage 28).
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:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only briefly
Rswitch on the cooling with air dehumidifica-
tion function
Rswitch on the defrost windshield function
briefly, if required
Climate control regulates the temperature and
air humidity in the vehicle interior. The air filter
cleans the air, thus improving the interior cli-
mate.
For vehicles with a combustion engine, the
"Cooling with air dehumidification" function is
only available when the engine is running. For
hybrid vehicles, the "Cooling with air dehumidi-
fication" function is also available via the elec-
tric refrigerant compressor when the engine is
not running. Optimum climate control is only
achieved with the side windows and roof closed.
If you start the engine using your smartphone,
the last selected climate control setting is reac-
tivated (
Ypage 164).
The residual heat function can only be activated
or deactivated with the ignition switched off
(
Ypage 152).
iVentilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (
Ypage 95). This will speed
up the cooling process and the desired inte- rior temperature will be reached more
quickly.
iThe 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.
For this reason, you should always observe
the interval for replacing the filter, which is
specified in the Maintenance Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance Book- let.
iIt is possible that the blower may be activa-
ted automatically 60 minutes after the Smart-
Key has been removed depending on various
factors, e.g. the outside temperature. The
vehicle is then ventilated for 30 minutes to dry
the climate control system.
140Overview of climate control systems
Climate control
Automa tic climate control panel
USAonly
Front control panel
:Sets climat econtrol to automatic, lef t (Ypage 147)
;Sets thetemperature, lef t (Ypage 148)
=Sets theairflow, lef t (Ypage 150)
?Switches air-recirculation mod eon/off (Ypage 152)
ADefrost sth ewindshield (Ypage 151)
BCalls up theclimat econtrol men uof th emultimedia system (see separat eoperating instruc-
tions)
CSwitches th erear window defroste ron/off (Ypage 151)
DSwitches coolin gwit hair dehumidification on/off (Ypage 146)
Switches th eresidual heat on or off (
Ypage 152)
ESets theairflow, right (Ypage 150)
FSets thetemperature, right (Ypage 148)
GSets climatecontrol to automatic, right (Ypage 147)
Rea rcontrol panel (vehicles wit hrear-compartmen tclimat econtrol )
HSets thetemperature, lef t (Ypage 148)
ISets theair distribution ,lef t (Ypage 149)
JSets climat econtrol to automatic (Ypage 147)
KSets theairflow (Ypage 150)
LActivates/deactivates climat econtrol (Ypage 145)
Switches th eresidual heat on or off (
Ypage 152)
MSets theair distribution ,right (Ypage 149)
NSets th etemperature, right (Ypage 148)
Overview of climate control systems141
Climate control
Canada only
Front control panel
:Sets climate control to automatic, left (Ypage 147)
;Sets the temperature, left (Ypage 148)
=Sets the airflow, left (Ypage 150)
?Switches air-recirculation mode on/off (Ypage 152)
ADefrosts the windshield (Ypage 151)
BCalls up the climate control menu of the multimedia system (see separate operating instruc-
tions)
CSwitches the rear window defroster on/off (Ypage 151)
DSwitches cooling with air dehumidification on/off (Ypage 146)
Switches the residual heat on or off (
Ypage 152)
ESets the airflow, right (Ypage 150)
FSets the temperature, right (Ypage 148)
GSets climate control to automatic, right (Ypage 147)
Rear control panel (vehicles with rear-compartment climate control)
HSets the temperature, left (Ypage 148)
ISets the air distribution, left (Ypage 149)
JSets climate control to automatic (Ypage 147)
KSets the airflow (Ypage 150)
LActivates/deactivates climate control (Ypage 145)
Switches the residual heat on or off (
Ypage 152)
MSets the air distribution, right (Ypage 149)
NSets the temperature, right (Ypage 148)
142Overview of climate control systems
Climate control
PLUG-IN HYBRID (USA only)
Front control panel
:Sets climate control to automatic, left (Ypage 147)
;Sets the temperature, left (Ypage 148)
=Sets the airflow, left (Ypage 150)
?Activates/deactivates air-recirculation mode manually (Ypage 152)
ADefrosts the windshield (Ypage 151)
BCalls up the climate control menu of the multimedia system (see separate operating instruc-
tions)
Switches the residual heat on or off (
Ypage 152)
CSwitches the rear window defroster on/off (Ypage 151)
DActivates/deactivates "Immediate pre-entry climate control" (Ypage 158)
ESets the airflow, right (Ypage 150)
FSets the temperature, right (Ypage 148)
GSets climate control to automatic, right (Ypage 147)
Rear control panel (vehicles with rear-compartment climate control)
HSets the temperature, left (Ypage 148)
ISets the air distribution, left (Ypage 149)
JSets climate control to automatic (Ypage 147)
KSets the airflow (Ypage 150)
LActivates/deactivates climate control (Ypage 145)
Switches the residual heat on or off (
Ypage 152)
MSets the air distribution, right (Ypage 149)
NSets the temperature, right (Ypage 148)
Overview of climate control systems143
Climate control
PLUG-IN HYBRID (Canada only)
Front control panel
:Sets climate control to automatic, left (Ypage 147)
;Sets the temperature, left (Ypage 148)
=Sets the airflow, left (Ypage 150)
?Activates/deactivates air-recirculation mode manually (Ypage 152)
ADefrosts the windshield (Ypage 151)
BCalls up the climate control menu of the multimedia system (see separate operating instruc-
tions)
Switches the residual heat on or off (
Ypage 152)
CSwitches the rear window defroster on/off (Ypage 151)
DActivates/deactivates "Immediate pre-entry climate control" (Ypage 158)
ESets the airflow, right (Ypage 150)
FSets the temperature, right (Ypage 148)
GSets climate control to automatic, right (Ypage 147)
Rear control panel (vehicles with rear-compartment climate control)
HSets the temperature, left (Ypage 148)
ISets the air distribution, left (Ypage 149)
JSets climate control to automatic (Ypage 147)
KSets the airflow (Ypage 150)
LActivates/deactivates climate control (Ypage 145)
Switches the residual heat on or off (
Ypage 152)
MSets the air distribution, right (Ypage 149)
NSets the temperature, right (Ypage 148)
144Overview of climate control systems
Climate control
Notes on using automatic climate
control
Climate control system
Below, you can find a number of notes and rec-
ommendations to help you use climate control
optimally.
RActivate climate control using the Ã
rocker switch. The indicator lamp in the Ã
rocker switch lights up.
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.
RUse the residual heat function if you want to
heat or ventilate the vehicle interior when the
ignition is switched off. The residual heat
function can only be activated or deactivated
with the ignition switched off. The residual
heat function is switched off when the ignition
is switched on.
If you are controlling the rear-compartment cli-
mate control using the front control panel, note
the following:
RIf you set rear-compartment climate control
using the front control panel, the Ysym-
bol appears in the rear-compartment control
panel display.
RIf the rear-compartment climate control is set
using the front control panel, it cannot be set
at the same time using the rear control panel. After completing the settings for the rear-
compartment climate control using the front
control panel, wait five seconds. You will then
be able to control the rear climate control
using the rear control panel.
RAfter selecting the rear compartment set-
tings, the front climate control can be con-
trolled automatically again via the multimedia
system after five seconds.
Alternatively, you can select "Cancel rear
compartment" in the multimedia system air-
conditioning function bar.
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 (
Ypage 167).
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
Switch on climate control primarily using the
à rocker switch (
Ypage 147).
Activating/deactivating front climate
control using the front control panel
XTurn the SmartKey to position 2in the ignition
lock (Ypage 162).
XTo activate: press thetor! rocker
switch up or down.
The climate control menu opens.
XActivate climate control via the air-condition-
ing setting bar in the multimedia system (see
the separate operating instructions).
XTo deactivate: press thetor!
rocker switch up or down.
The climate control menu opens.
XActivate climate control via the air-condition-
ing setting bar in the multimedia system (see
the separate operating instructions).
Activating/deactivating rear-compart-
ment climate control using the front
control panel
Observe the notes on controlling the rear-com-
partment climate control using the front control
panel (
Ypage 145).
Operating the climate control systems145
Climate control