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
Useful information............................130
Notes on breaking-in a new vehi-
cle ....................................................... 130
Driving ............................................... 130
Transmission ..................................... 134
High-voltage battery .........................140
Parking ............................................... 153
Driving tips ........................................ 157
Driving systems ................................ 162
129
Driving and parking
Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific 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 special-
ist workshops (
Ypage 26).
Notes on breaking-in a new vehicle
The sensor system of some driving and driv-
ing safety systems adjusts automatically
while a certain distance is being driven after
the vehicle has been delivered or after
repairs. Full system effectiveness is not
reached until the end of this teach-in proce-
dure.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
!Before driving away, you must ensure
that, for your own safety and to avoid dam-
age, the charging cable has been removed
from the vehicle socket. Otherwise, you
cannot shift the transmission out of posi-
tion P.
The braking performance of the electric
motor using recuperative braking is, in some
operating modes, either reduced or not effec-
tive:
Rwhen the condition of charge of the high-
voltage battery increases
Rif the high-voltage battery is not yet at a
normal operating temperature
Rwhen driving close to the maximum speed
Rwhen the vehicle is almost stationary
130Driving
Driving and parking
Rin transmission positionN
Rduring and after ESP stability control
If you do not make an additional effort to
apply the brake yourself, the braking effect
may not be sufficient. If necessary, counter-
act the reduced regenerative braking effect
by applying the brake yourself.
Before commencing your journey, ensure that the charging cable required for charging the
high-voltage battery is in the vehicle.
SmartKey positions
SmartKey
gTo remove the SmartKey
(shift the transmission to position P)
1Power supply for some consumers, such
as the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the igni-
tion lock even if it is not the correct Smart- Key for the vehicle. The ignition is not
switched on. The drive system cannot be
started.
Start/Stop button
General notes
Vehicles with KEYLESS-GO are equipped with
SmartKeys featuring the integrated KEYLESS-GO function and a detachable Start/Stop but-
ton. A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example,
when starting the drive system.
When you insert the Start/Stop button into
the ignition lock, the system needs approx-
imately two seconds recognition time. You
can then use the Start/Stop button.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the drive system starts
immediately.
To start the vehicle without actively using the
SmartKey:
Rthe Start/Stop button must be inserted in
the ignition lock.
Rthe SmartKey must be in the vehicle.
Rthe vehicle must not be locked with the
SmartKey or KEYLESS-GO (
Ypage 73).
Do not keep the KEYLESS-GO key:
Rwith electronic devices, e.g. a mobile
phone or another SmartKey.
Rwith metallic objects, e.g. coins or metal
foil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of KEYLESS-
GO.
If you lock the vehicle with the SmartKey's
remote control or with KEYLESS-GO, after a
short time:
Ryou will not be able to switch on the ignition
with the Start/Stop button.
Ryou will not be able to start the drive system
with the Start/Stop button until the vehicle is unlocked again.
If you lock the vehicle centrally using the but-
ton on the front door (
Ypage 80), you can
continue to start the drive system with the
Start/Stop button.
Driving131
Driving and parking
Z
Drive program S (Sport)
Drive programSis characterized by the fol-
lowing:
Rth e vehicle exhibits sporty driving charac-
teristics .
Rthe entire power output can be utilized by
depressing the accelerator pedal.
E+ Economy Plus
Drive program E+is characterized by the fol-
lowing:
Rreduced torque and significantly reduced
power. This supports an especially efficient
and even driving style and results in a
reduction in speed to approximately
70 mph (110km/ h).
Rthe vehicle pulling away more gently in
forward gear unless the accelerator pedal
is depressed fully.
Rthe wheels are less likely to spin.
Rparticularly efficient overrun.
Rfull power output by using kickdown.
Rthe performance of air-conditioning system
and heating are reduced.
Steering wheel paddle shifters
Manually adjustable recuperation
:Left-hand steering wheel paddle shifter -
;Right-hand steering wheel paddle shifter
+ You can increase or reduce recuperation in
overrun mode using the steering wheel pad-
dle shifters. When you remove your foot from
the accelerator pedal, recuperation occurs.
The electric motor is then used as a alternator
and energy is recovered while driving. The
recuperated electrical energy is stored in the
high-voltage battery. A higher energy recu-
peration level means that the vehicle is
braked more powerfully.
If necessary, counteract the reduced regen-
erative braking effect by applying the brake
yourself.
Information on the Recuperative Braking Sys-
tem (
Ypage 68).
XTo decrease recuperation:
pull right-hand
steering wheel paddle shifter ;.
XTo increase recuperation:pull left-hand
steering wheel paddle shifter :.
The various recuperation levels are shown in
the transmission position display once Dhas
been selected (
Ypage 134).
The following recuperation levels are availa-
ble in overrun mode:
Rno recuperation (D+, coasting mode)
Rmoderate recuperation (D )
Rhigh recuperation (D-)
Rrecuperation depending on the traffic sit-
uation (DAUTO, radar-based)
You can see the intensity of recuperation in
overrun mode by reading the recuperation
performance value shown in the power dis-
play (
Ypage 183).
Every time drive position Dis selected, the
transmission switches into recuperation level
D
AUTOautomatically.
138Transmission
Driving and parking