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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
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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
Page 187 of 342

Vehicles with COMAND: switches on the
Voice Control System (see the separate
operating instructions)
=Right control panel
?Left control panel
ABack button
XTo activate the on-board computer:turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
Left control panel
=
;RCalls up the menu and menu bar
9
:Press briefly:
RScrolls in lists
RSelects a submenu or function
RIn the Audiomenu: selects the
previous or next station, when
the preset list or station list is
active, or an audio track or video
scene
RIn the Tel(Telephone) menu:
switches to the phone book and
selects a name or telephone
number
9
:Press and hold:
RIn the Audiomenu: selects a pre-
set list or a station list in the
desired frequency range or an
audio track or video scene using
rapid scrolling
RIn the Tel(Telephone) menu:
starts rapid scrolling if the phone
book is open
aRConfirms the selection or display
message
RIn the Tel(Telephone) menu:
switches to the telephone book
and starts dialing the selected
number
Right control panel
8RMute
W
XRAdjusts the volume
~RRejects or ends a call
RExits the telephone book/redial
memory
6RMakes or accepts a call
RSwitches to the redial memory
Displays and operation185
On-board computer and displays
Z
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Back button
%Press briefly:
RBack
RVehicles with Audio 20:
Switches off voice-operated con-
trol for navigation (see manufac-
turer's operating instructions)
RVehicles with COMAND:
Switches off the Voice Control
System (see the separate oper-
ating instructions)
RHides display messages or calls
up the lastTrip
menu function
used
RExits the telephone book/redial
memory
%Press and hold:
RCalls up the standard display in
the Trip
menu
Multifunction display
:Range
;Time
=Text field
?Menu bar
ADrive program
BTransmission position (Ypage 134)
CPermanent display: outside temperature
or speed (
Ypage 197)
XTo display menu bar ?: press the=
or ; button on the steering wheel.
If you do not press the buttons any longer,
menu bar ?is faded out after a few sec-
onds.
Text field =shows the selected menu or
submenu as well as display messages.
iSet the time using Audio 20 or COMAND
(see the separate operating instructions).
The following messages may appear in
the multifunction display:
Rj Active Parking Assist (Ypage 168)
RCRUISECruise control (Ypage 162)
Rë HOLD function (Ypage 163)
Menus and submenus
Menu overview
Using the =or; button on the steer-
ing wheel, open the menu bar.
Operating the on-board computer
(
Ypage 184).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
RTripmenu (Ypage 187)
RNavimenu (navigation instructions)
(
Ypage 189)
RAudiomenu (Ypage 191)
RTelmenu (telephone) (Ypage 192)
RDriveAssistmenu (assistance)
(
Ypage 193)
RServ.menu (Ypage 194)
RSett.menu (settings) (Ypage 195)
The displays for the Audio
,Naviand Tel
menus may differ slightly to those in your
vehicle.
The examples given in this Operator's Manual
apply to vehicles equipped with COMAND.
186Menus and submenus
On-board computer and displays
Page 189 of 342

Trip menu
Standard display
XPress and hold the %button on the
steering wheel until the Trip
menu with
trip odometer :and odometer ;
appears.
Trip computer "From Start" or "From
Reset"
:Distance
;Driving time
=Average speed
?Average electrical consumption
XPress the =or; button on the steer-
ing wheel to select the Trip
menu.
XPress the9or: button to select
From Start
or From Reset.
The values in the From Start
submenu are
calculated from the start of a journey whilst
the values in the From Reset
submenu are
calculated from the last time the submenu
was reset (
Ypage 189).
In the following cases, the trip computer is
automatically reset From Start
:
Rthe ignition has been switched off for more
than four hours.
R999 hours have been exceeded.
R9,999 miles have been exceeded. When 9,999 hours or 99,999 miles have been
exceeded, the trip computer is automatically
reset
From Reset
.
ECO display
XPress the =or; button on the steer-
ing wheel to select the Trip
menu.
XPress the9or: button to select
ECO DISPLAY
.
If the ignition remains switched off for longer
than four hours, the ECO display will be auto- matically reset.
For further information on the ECO display,
see (
Ypage 157).
Energy flow
Energy flow display
The energy flow display can be shown in the
multifunction display and in the COMAND/
Audio display.
XPress the =or; button on the steer-
ing wheel to select the Trip
menu.
XConfirm by pressingaon the steering
wheel.
XUse : or9 to select Energy Flow.
The active components are highlighted in
the energy flow display.
The energy flow is indicated by arrows. The
arrows have a different color depending on
the operating state:
RGreen: energy recuperation
RWhite:normal energy consumption
RRed:increased energy consumption
Menus and submenus187
On-board computer and displays
Z
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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
Page 191 of 342

low, the display shows a vehicle being
charged instead of the approximate range.
The specified values for range depend on
the driving program selected and may vary
as a result of:
Rhigher and lower outside temperatures
Rthe style of driving
Ractivated electrical consumers
Digital speedometer
XPress the=or; button on the steer-
ing wheel to select the Trip
menu.
XPress the9or: button to select the
digital speedometer.
Resetting values
XPress the =or; button on the steer-
ing wheel to select the Trip
menu.
XPress the9or: button to select the
function that you wish to reset.
XPress ato confirm.
XSelect :Yesand press ato con-
firm.
You can reset the values of the following func- tions:
RTrip odometer
R"From Start" trip computer
R"From Reset" trip computer
RECO display If you reset the values in the ECO display, the
values in the "From Start" trip computer are
also reset. If you reset the values in the "From
Start" trip computer, the values in the ECO
display are also reset.
Navigation system menu
Displaying navigation instructions
In the Navimenu, the multifunction display
shows navigation instructions.
Additional information on navigation can be
found in the separate Audio 20 or COMAND
operating instructions.
XSwitch on Audio 20 or COMAND, see the
separate operating instructions.
XPress the =or; button on the steer-
ing wheel to select the Navi
menu.
Route guidance not active
:Direction of travel
;Current road
Route guidance active
No change of direction announced
:Distance to the destination
;Distance to the next change of direction
=Current road
?"Follow the road's course" symbol
Menus and submenus189
On-board computer and displays
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Change of direction without lane recom-
mendation
:Road into which the change of direction
leads
;Distance to change of direction and visual
distance display
=Change-of-direction symbol
When a change of direction is to be made, you
will see symbol =for the change of direction
and distance graphic ;. The distance indi-
cator shortens towards the top of the display
as you approach the point of the announced
change of direction. The change of direction
starts once the distance display reaches zero.
Change of direction announced with a
lane recommendation
:Road into which the change of direction
leads
;Distance to change of direction and visual
distance display
=Lanes not recommended
?Recommended lane and new lane during a
change of direction
AChange-of-direction symbol
On multilane roads, new lane recommenda-
tions can be displayed for the next change of
direction if the digital map supports this data.
During the change of direction, new lanes
may be added. Lane not recommended
=: you will not be
able to complete the next change of direction
if you stay in this lane.
Recommended lane and new lane during a
change of direction ?: in this lane you will be
able to complete the next two changes of
direction without changing lane.
Other status indicators of the naviga-
tion system
The navigation system displays additional
information and the vehicle status.
Possible displays:
RNewRoute...or CalculatingRoute...
A new route is calculated.
RRoad Not Mapped
The vehicle position is inside the area of the
digital map but the road is not recognized,
e.g. newly built streets, car parks or private
land.
RNo Route
No route could be calculated to the selec-
ted destination.
RO
You have reached the destination or an
intermediate destination.
190Menus and submenus
On-board computer and displays