Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the temperature measured
and does not record the road temperature.
The outside temperature display is in the mul-
tifunction display (
Ypage 186).
There is a short delay before a change in out-
side temperature appears in the multifunc-
tion display.
E-CELL display
GWARNING
There is a risk of an accident if you accelerate
or overtake when the power output of the
drive system is reduced.
You should therefore adapt your driving style
and drive particularly carefully. Charge the
high-voltage battery at a charge station imme-
diately.
XStart the drive system (Ypage 133).
E-CELL display :shows the available
power of the drive system.
Under normal operating conditions, E-CELL
display :is in the maximum range.
The power output available may deviate from
the maximum range in the event of:
Rvery high or low outside temperatures
Rvery high performance requirements for a
longer period of time
Rvery low condition of charge of the high-
voltage battery
Ra malfunction in the drive system
The reduced power output can be improved
by charging the high-voltage battery
(
Ypage 140).
Power display
Power display :contains two areas:
RArea above 0
Here, the current amount of power that the
drive system is feeding to the wheels is dis-
played.
RArea below 0
Here, the vehicle's recuperative power in
overrun mode is displayed.
If the needle for the power display is in the
OFF position, the vehicle is not ready to drive
because:
Rthe drive system has not yet started
Rthe charging cable is still connected to the
vehicle socket
Rthere is insufficient power available from
the high-voltage battery
Rthe vehicle's high-voltage electrical system
is malfunctioning
When the drive system is started, the needle
in the power display moves to position 0. The
display Ready
appears in the lower multifunc-
tion display. The vehicle is ready to drive.
The boost area for maximum acceleration can
be reached using kickdown (
Ypage 137).
Displays and operation183
On-board computer and displays
Z
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
Rin transmission positionN
Rduring and after ESP stability control
If necessary, counteract the reduced regen-
erative braking effect by applying the brake
yourself.
Condition of charge display
Condition of charge display :shows the
condition of charge of the high-voltage bat-
tery.
The charge value is shown as a percentage in
the Energy Flow
menu in the instrument
cluster (
Ypage 187).
iThe Energy Flowmenu can also be dis-
played in the COMAND/Audio display.
The condition of charge of the high-voltage
battery has dropped into the reserve range if
the drive system is running and:
Rthe DriveBatteryReserveLevelmes-
sage appears in the display
Rthe indicator lamp in the instrument cluster lights up Charge the high-voltage battery from a con-
dition of charge of less than 20% at:
Ran electrical outlet
Ra charging station
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 the vehicle is almost stationary
Rin transmission position N
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.
Operating the on-board computer
Overview
:Multifunction display
;Vehicles with Audio 20: switches on
voice-operated control for navigation (see
manufacturer's operating instructions)
184Displays and operation
On-board computer and displays
Drive system switched on when the vehi-
cle is stationary or in overrunmode
The drive system is switched on while the
vehicle is stationary. Alternatively, the drive
system is switched on while the vehicle is in
transmission position D
+orN.
The arrows indicating energy flow are not
shown.
Drive system switched off and high-volt-
age battery being charged
The drive system is switched off. The charging
cable is connected and the high-voltage bat-
tery is being charged.
The arrows for the energy flow are shown in
green.
Normal drivin g
The drive system powers the vehicle.
The arrows for the energy flow are shown in
white. Boost driving
mode
If high power is required, the boost mode
takes effect.
The arrows for the energy flow are shown in
red.
Energy recuperation mode
The kineti c energy of the vehicle is converted
into electrical energy. The Recuperative
Brake System is active. The high-voltage bat-
tery is being charged.
The arrows for the energy flow are shown in
green.
Displaying the range and current con-
sumption
XPress the =or; button on the steer-
ing wheel to select the Trip
menu.
XPress9or: to select the display
with approximate range and current fuel
consumption.
The approximate range depends on the
condition of charge of the high-voltage bat-
tery and your current driving style. If the
high-voltage battery condition of charge is
188Menus and submenus
On-board computer and displays
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, in the Sett.
menu you have the fol-
lowing options:
RChanging the E-CELL settings
RChanging the instrument cluster settings
RChanging the light settings
RChanging the vehicle settings
RRestoring the factory settings
E‑CELL menu
Departure time
In the E-CELL
menu you can choose to cool
down or heat the vehicle interior for a prede- fined departure time.
If you have engaged Pand the charging cable
is connected, the on-board computer dis-
plays:
Rthe expected charge time of the high-volt-
age battery or
Rthe RANGE PLUS condition of charge for
the departure time set
Changing the departure time
XPress the =or; button on the steer-
ing wheel to select the Settings
menu.
XPress9or: on the steering wheel
to select the E‑CELL
menu.
XPress9or: to select Depart.
Time.
XPressato confirm.
You will see the selected setting.
XPress the :or9 button to select A,B
or Change C.
XPress ato confirm.
XPress =or; to select Depart.
Time Hours.
XPress the 9or: button to set the
hour.
XPress =or; to select Depart.
Time Minutes.
XPress9or: to set the minutes.
XPress ato confirm.
After changing from one menu to another,
the departure time setting is stored.
Selecting the departure time
XPress the =or; button on the steer-
ing wheel to select the Settings
menu.
XPress9or: on the steering wheel
to select the E‑CELL
menu.
XPress9or: to select Depart.
Time.
XPressato confirm.
XPress the :or9 button to select
one of the three departure times or Timer
Off(no timer active).
XPressato confirm.
Charging with RANGE PLUS
If you have engaged Pand the charging cable
is connected, the on-board computer dis-
plays:
Rthe expected charge time of the high-volt-
age battery or
Rthe RANGE PLUS condition of charge for
the departure time set
RANGE PLUS charges when:
Ryou have activated RANGE PLUS via the
center console prior to charging and
Rthe high-voltage battery is fully charged
If charging is not complete by departure time,
the maximum range will notbe available.
Menus and submenus195
On-board computer and displays
Z
Example:
RSet departure time: 6:41 a.m.
REnd time for standard high-voltage battery
charging: 6:00 a.m.
RRANGE PLUS condition of charge at
6:41 a.m.:half of the additional range
RThe maximum additional range is
decreased by 50 percent.
Pre-entry climate control at time of depar-
ture
If you activate the "Rem. Climate Control at
departure time" function, the vehicle interior
is heated or cooled prior to a desired depar-
ture time.
iTo heat or cool the vehicle interior for a
desired departure time, the high-voltage
battery must be sufficiently charged. Acti-
vate the climate control function primarily
when the high-voltage battery is being
charged. You must also set a departure
time using the E-CELL
submenu
(
Ypage 195).
Switching "Pre-entry climate control at
departure time" on/off
XPress the =or; button on the steer-
ing wheel to select the Sett.
menu.
XUse9 or: to select the E-CELL
submenu.
XPressato confirm.
XPress 9or: to select Pre-Entry
Climate Ctrl. at Departure Time:.
XPressato activate or deactivate.
The vehicle interior will then be heated or
cooled prior to the predefined departure
time. If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary
heating button.
You can use the on-board computer to specify
up to three departure times in the E-CELL
submenu. One of the specified departure
times may be preselected (
Ypage 195).
Pre-entry climate control (via SmartKey)
Pre-entry climate control via the key is
switched on temporarily when the vehicle is
unlocked using the key. In order to switch on
pre-entry climate control via the SmartKey,
the function has to be activated using the on- board computer.
Activating/deactivating pre-entry cli-
mate control via the key
XPress the =or; button on the steer-
ing wheel to select the Sett.
menu.
XUse9 or: to select the E-CELL
submenu.
XPressato confirm.
XPress 9or: to select Pre-Entry
Climate Ctrl. (Via Key):.
XPressato activate or deactivate.
If pre-entry climate control via key is acti-
vated, pre-entry climate control using the
key is switched on temporarily when you
unlock the vehicle.
Setting the maximum charge current
Before charging the high-voltage battery,
check the maximum permissible charge cur-
rent for the relevant power socket.
You can set a maximum charge current in the
E-CELL
menu.
It is only necessary to select the maximum
charge current if there are no charge current
settings on the charging cable.
iThe maximum charge current values in
the on-board computer may deviate from
the charging cable values.
196Menus and submenus
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
Ð
PowerSteeringMal‐
function See Oper‐
ator's Manual
The power steering is malfunctioning.
A warning tone also sounds.
GWARNING
You will need to use moreforce to steer.
There is a risk of an accident.
XCheck whether you are able to apply the extra force required.
If you are able to steer safely:
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
If you are unable to steer safely:
XDo no t drive on.
XConsult a qualified specialist workshop.
Phone No ServiceYour vehicle is outside the network provider'stransmitter/
receiver range.
XWait until the mobile phone operational readiness symbol
appears in the multifunction display.
¥
Check Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
XAd d washer fluid(Ypage 272).
Wiper Malfunction‐
ing
The windshield wipers are malfunctioning.
XVisit a qualified specialist workshop.
Hazard Warning
Flashers Malfunc‐
tioning
The hazard warning lamps are faulty.
XVisit a qualified specialist workshop.
î
Charger Cable Con‐
nected
The charging cable is still connected to the vehicle socket.
XRemove th echargin g cable from vehicle socket.
Display messages227
On-board computer and displays
Z
There is a risk of an accident.
In the event of a short circuit or a similar inci-dent, contact a qualified specialist workshop
immediately. Do not drive any further. You
should have all work involving the battery car-
ried out at a qualified specialist workshop.
For further information about ABS and ESP®,
see (
Ypage 63) and (Ypage 66).
GWARNING
Electrostatic build-up can lead to the creation of sparks, which could ignite the highly explo-
sive gases of a battery. There is a risk of an
explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
Rby wearing clothing made from synthetic
fibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across the
carpet or other synthetic materials
Rif you wipe the battery with a cloth
GWARNING
During the charging process, a battery produ-
ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.
RMake sure that the positive terminal of a
connected battery does not come into con- tact with vehicle parts.
RNever place metal objects or tools on a bat-
tery.
RIt is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
GWARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
!Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Main-
tenance Booklet or contact a qualified spe-
cialist workshop for more information.
Comply with safety precautions and take pro-
tective measures when handling batteries.
288Batteries
Breakdown assistance
Risk of explosion.
Fire, open flames and smoking are
prohibited when handlingthe bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid con-
tact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Rinse any acid spills immediately
with clear water. Contac taphysi-
cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
Fo r safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to preven t vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event of
an accident.
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery discon-
nected at a qualified specialist workshop. You
can also charge the battery withacharger
recommended by Mercedes-Benz. Contac ta
qualified specialist workshop for further infor- mation. Have
the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified spe-
cialist workshop if you wish to leave your
vehicle parked for a long period of time.
Only replace a battery withabattery that has
been recommended by Mercedes-Benz.
Remove th eSm artKe
y if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy,
thus conservin g battery power.
Afte r an interruption to the power supply, e.g.
due to a discharged battery, you must reset
th e clock using Audio 20 or COMAND. You
can find further information in the separate
operating instructions.
Charging the 12 ‑volt battery
GWARNING
During chargin g and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do no t lean overabattery.
GWARNING
Battery aci d is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
no t inhale any battery gases. Do not lean over
th e battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion .
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Batteries289
Breakdown assistance
Z