
bDirects air through the defroster, cen-
ter and side air vents
a Directs air through the defroster and
footwell vents
_ Directs air through the defroster, cen-
ter, side and footwell vents
iRegardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed if the adjusters are turned clockwise until they engage.
Setting the air distribution
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XPress the ÉorË button repeatedly
until the desired symbol appears in the dis-
play.
Setting the airflow
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo increase/reduce: press theKor
I button.
Switching the ZONE function on/off
XTo activate: press theábutton.
The indicator lamp in the ábutton lights
up.
The temperature setting for the driver's
side is not adopted for the front-passenger
side.
XTo deactivate: press theábutton.
The indicator lamp in the ábutton goes
out.
The temperature setting for the driver's
side is adopted for the front-passenger
side.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to defrost the inside of the wind-
shield and the side windows.
iYou should only select the "Windshield
defrosting" function until the windshield is
clear again.
Activating/deactivating the defrosting
function for the windshield
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and
front side windows
Rair-recirculation mode off
Vehicles with windshield heating: the
windshield heating is switched on using the "Windshield defrosting" function.
iThe "Windshield defrosting" function
automatically sets the blower output to the optimum defrosting effect. As a result, the
airflow may increase or decrease automat-
ically after the ¬button is pressed.
iYou can adjust the blower output man-
ually while the "Windshield defrosting"
function is in operation:
Press the óorô button.
XTo deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
Operating the climate control systems121
Climate control

XPress theÃbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
XTurn temperature control :orE counter-
clockwise or clockwise (
Ypage 117).
MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
The MAX COOL function only works when the vehicle is ready to drive.
XTo activate: press theÙbutton.
The indicator lamp in the button lights up.
XTo deactivate: press theÙbutton.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate con-
trol switches to the following functions:
Rmaximum cooling
Rmaximum airflow
Rair-recirculation mode on
Defrosting the windows
Windows fogged up on the inside
XActivate the ¿"Cooling with air dehu-
midification" function.
XActivate automatic mode Ã.
XIf the windows continue to fog up, activate
the¬ "Windshield defrosting" function.
iYou should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XSet the air distribution to PorO.
iYou should only select this setting until
the windshield is clear again.
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 auto-
matically after several minutes.
If the battery voltage is too low, the rear win-
dow defroster may switch off.
Switching on/off
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XPress the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
122Operating the climate control systems
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 deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in particu-
lar at low temperatures. Only use air-recircu-
lation mode briefly to prevent the windows
from fogging up.
Switching on/off
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 131).
XTo activate: press theebutton.
The indicator lamp in the ebutton lights
up.
Air-recirculation mode switches on automat-
ically:
Rat high outside temperatures
Rat high levels of pollution
When air-recirculation mode is activated
automatically, the indicator lamp in the e
button is not lit. Outside air is added after
about 30 minutes.
XTo deactivate: press theebutton.
The indicator lamp in the ebutton goes
out.
iAir-recirculation mode deactivates auto-
matically:
Rafter approximately five minutes at out-
side temperatures below approximately
45 ‡ (7 †)
Rafter approximately five minutes if the
"Cooling with air dehumidification" func-
tion is deactivated
Rafter approximately 30 minutes at out-
side temperatures above approximately
45 ‡ (7 †) if the cooling with air dehu-
midification function is activated
Convenience opening or closing using
the air-recirculation button
GWARNING
When using the convenience closing feature,
parts of the body could be trapped in the clos-
ing area when a side window is being closed.
There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
GWARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
one becomes trapped, immediately press
Operating the climate control systems123
Climate control
Z

theW switch in the door to stop the move-
ment of the side windows. To continue closing
the side window, pull on the Wswitch.
XConvenience closing feature: press and
hold the ebutton until the side win-
dows are closed.
The indicator lamp in the ebutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area
during convenience closing, proceed as fol-
lows:
XPress the Wbutton for opening/closing
the side windows.
The side window stops.
XTo then open the side windows, press the
W button again.
or
XPress the ebutton for longer than two
seconds.
The side windows move in the opposite
direction.
XConvenience opening feature: press and
hold the ebutton until the side win-
dows are opened. The side windows move
back to their original positions.
The indicator lamp in the ebutton goes
out. Air-recirculation mode is deactivated.
Notes on the automatic reversing feature for
the side windows (
Ypage 83).
If you open the side windows manually after
closing them with the convenience closing
feature, they will remain in this position when
opened using the convenie nce opening fea-
ture.
Pre-entry climate control via Smart-
Key
Before getting in, the vehicle interior can be
briefly warmed or ventilated in advance. In
addition, the air from the air vent can be pre-
cooled. The high-voltage battery must be sufficiently
charged before the "Pre-entry climate control
via key" function can be activated.
Activating/deactivating the pre-entry cli-
mate control (via key)
When the vehicle is unlocked using the Smart-
Key or KEYLESS-GO, the climate control func-
tions are activated.
The pre-cooling and pre-heating climate con-
trol functions last 5 minutes.
When the vehicle is pre-cooled, the following functions are activated as necessary:
RClimate control system
RCooling with air dehumidification
RBlower
When the vehicle is pre-heated, the following
functions are activated as necessary:
RClimate control system
RBlower
RSeat heating
RWindshield heating
RRear window defroster
Pre-entry climate control is automatically
switched off when operational readiness
mode is requested.
Activating/deactivating pre-entry cli-
mate control (via key)
You can activate and deactivate the pre-entry
climate control (via key) function using the
on-board comp uter in theE-CELL
submenu
(
Ypage 196).
iIf the condition of charge of the high-volt-
age battery is below the specified minimum
condition of charge, pre-entry climate con-
trol will not be activated even if it has been
set.
124Operating the climate control systems
Climate control

Pre-entry climate control at departure
time and immediate pre-entry climatecontrol
Important safety notes
GWARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
General notes
Using the "Pre-entry climate control at depar-
ture time" function, you can cool or heat the
vehicle interior prior to the desired departure
time.
When using the "Pre-entry climate control at
departure time" function, the condition of
charge of the high-voltage battery must be
higher than the specified minimum condition
of charge.
The running time of the climate control may
be reduced if:
Rthe vehicle is not connected to an electric
power supply
Rthe high-voltage battery is not fully charged
With active "Pre-entry climate control at
departure time" the condition of charge of the
high-voltage battery can be reduced, even if
the charge cable connector is connected.
In certain situations, the desired interior tem-
perature cannot be reached.
When the vehicle is cooled, the following
functions are activated as necessary:
RClimate control system
RCooling with air dehumidification
RBlower
When the vehicle is heated, the following
functions are activated as necessary:
RClimate control system
RBlower
RSeat heating
RWindshield heating
RRear window defroster
"Immediate pre-entry climate control" is auto-
matically switched off when operational read- iness mode is requested.
Setting the departure time
You can set a departure time for the "Pre-
entry climate control at departure time". Your
vehicle will then be cooled or heated until the
desired temperature is reached in time for the
set departure time. "Pre-entry climate control
at departure time" will be activated a maxi-
mum of 35 minutes before departure. If the
departure is delayed, the vehicle will be
heated or cooled for a further five minutes.
You can set the desired departure time in the
E-CELL
submenu on the on-board computer
(
Ypage 195).
Activating immediate pre-entry climate
control
You can activate "Immediate pre-entry cli-
mate control" even if the vehicle interior is
already at the desired temperature. This
means that the vehicle interior continues to
be cooled or heated, e.g. if the journey is
interrupted for up to 50 minutes, and the inte-
rior temperature is kept constant. You can
only set the desired temperature using the
climate control unit. If you do not pre-select a
temperature, the last temperature set will be
automatically adopted.
Operating the climate control systems125
Climate control
Z

To activate/deactivate "Immediate pre-
entry climate control"
XPress button:in the center console.
The blue or red indicator lamp in the button
lights up or goes out.
The colors of the indicator lamps in the button have the following meanings:
Re dH eating activated
Blue Cooling activated
Yellow Pre-entry climate control at depar- ture is preselected
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 between the windshield
and the hood free of blockages, such as ice, snow or leaves.
Rnever cover the air vents or air intake grillesin the vehicle interior.
iFor optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position.
Setting the center air vents
XTo open the center air vents: turn the
adjuster in one of center air vents :coun-
ter-clockwise.
XTo close the center air vent: turn the
adjuster in one of center air vents :clock-
wise as far as it will go.
Setting the side air vents
:Side window defroster vent
;Side air vent
XTo open a side air vent: turn the adjuster
in side air vent ;to the left.
XTo close a side air vent: turn the adjuster
in side air vent ;clockwise as far as it will
go.
126Air vents
Climate control

As a result of its basic characteristics, the
amount of energy available from the high-
voltage battery decreases over the course of
its life.
This reduces:
Rthe maximum range that can be achieved
by the vehicle
Rthe maximum output (acceleration) of the
vehicle
You can actively reduce the energy consump-
tion of your vehicle in a number of ways, for
example, by:
Ran anticipatory driving style
Rreducing the use of electrical consumers
Rhaving the vehicle regularly maintained
The charging time of the high-voltage battery may change over the course of its life.
Observe the displays on energy usage
(
Ypage 188) and range (Ypage 188).
RANGE PLUS
If you activate RANGE PLUS, the operating
window of the battery will be extended at thenext charging process. An extended driving
range will be available to you for the next
journey.
Using RANGE PLUS shortens the service life
of the battery. Therefore, only use RANGE
PLUS if, for example:
Rlong journeys are planned or
Rthe availability of charging stations at the
destination is limited
The more often RANGE PLUS is used, the
more the extended range is reduced.
Therefore always check the range display
before every journey (
Ypage 188).
XTo switch on: press button:.
The green Indicator lamp lights up.
XTo switch off: press button:.
The indicator lamp goes out.
RANGE PLUS switches off automatically if:
Rthe charging cable is disconnected or
Rthe charging process is complete
Information on charging with RANGE PLUS
(
Ypage 195).
Displays on energy consumption and
range
Displaying energy consumption and
recuperated electric energy (COMAND/
Audio 20)
:Energy consumption
;Recuperated electric energy
Every bar of the graph displays the average
value for one minute.
Energy consumption indicator :may differ
from the indicator in the From Start
144High-voltage battery
Driving and parking

Redialing
The on-board computer saves the last namesor numbers dialed in the redial memory.
XPress the =or; button on the steer-
ing wheel to select the Tel
menu.
XPress the6button to switch to the
redial memory.
XPress the 9or: button to select the
desired name or number.
XPress the 6ora button to start dial-
ing.
or
XIf you do not want to make a call: press
the ~ or% button.
Assistance menu
Introduction
Depending on the equipment installed in the
vehicle, you have the following options in the
DriveAssist
menu:
RDisplaying the assistance graphic
(
Ypage 193)
RActivates or deactivates ESP®
(Ypage 193)
RActivating/deactivating COLLISION PRE-
VENTION ASSIST PLUS (
Ypage 194)
RActivating/deactivating ATTENTION
ASSIST (
Ypage 194)
RActivating/deactivating Blind Spot Assist
(
Ypage 194)
Displaying the assistance graphic
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress9or: to select Assistance
Graphic.
XPressato confirm.
The assistance graphic displays the status
of and information from the following driv-
ing systems or driving safety systems:
RCOLLISION PREVENTION ASSIST PLUS
(
Ypage 63)
RATTENTION ASSIST (Ypage 176)
RRear window wiper (Ypage 110)
XPress :to display the ATTEN-
TION ASSIST assessment.
Deactivating/activating ESP®
Observe the important safety notes on ESP®
(Ypage 66).
GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
It may be best to deactivate ESP®in the fol-
lowing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
For further information about ESP
®, see
(
Ypage 66).
Menus and submenus193
On-board computer and displays
Z