Get On-board computer and displays Guide for Mercedes B Class SUV Second Generation (2011-2017)

Important safety notes

WARNING

If you operate information systems and com-

munication equipment integrated in the vehi-

cle while driving, you will be distracted from

traffic conditions. You could also lose control

of the vehicle. There is a risk of an accident.

Only operate the equipment when the traffic

situation permits. If you are not sure that this

is possible, park the vehicle paying attention

to traffic conditions and operate the equip-

ment when the vehicle is stationary.

You must observe the legal requirements for the

country in which you are currently driving when

operating the on-board computer.

WARNING

If the instrument cluster has failed or mal-

functioned, you may not recognize function

restrictions in systems relevant to safety. The

operating safety of your vehicle may be

impaired. There is a risk of an accident.

Drive on carefully. Have the vehicle checked

at a qualified specialist workshop immedi-

ately.

The on-board computer only shows messages or

warnings from certain systems in the multifunc-

tion display. You should therefore make sure

your vehicle is operating safely at all times.

If the operating safety of your vehicle is

impaired, pull over as soon as it is safe to do so.

Contact a qualified specialist workshop.

For an overview, see the instrument panel illus-

tration (Y page 32).

Displays and operation

Instrument cluster lighting

The light sensor in the instrument cluster auto-

matically controls the brightness of the multi-

function display. In daylight, the displays in the

instrument cluster are not illuminated.

The lighting in the instrument cluster, in the dis-

plays and the controls in the vehicle interior can

be adjusted using the brightness control knob.

The brightness control knob is located on the

bottom left of the instrument cluster

(Y page 32).

Turn the brightness control knob clockwise or

counter-clockwise.

If the light switch is set to the Ã, T or

L position, the brightness is dependent

upon the brightness of the ambient light.

READY indicator

When the drive system is started and the vehicle

is ready to drive, READY indicator : appears in

the multifunction display. This indicates that the

vehicle is operational.

Outside temperature display

You should pay special attention to road condi-

tions when temperatures are around freezing

point.

Bear in mind that the outside temperature dis-

play indicates the temperature measured and

does not record the road temperature.

The outside temperature display is in the multi-

function display (Y page 155).

There is a short delay before a change in outside

temperature appears in the multifunction dis-

play.

E-CELL display

WARNING

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.

152

Displays and operation

On-board computer and displays

Start the drive system (Y page 111).

E-CELL display : shows the available power

of the drive system.

Under normal operating conditions, E-CELL dis-

play : is in the maximum range.

The power output available may deviate from

the maximum range in the event of:

very high or low outside temperatures

very high performance requirements for a lon-

ger period of time

very low condition of charge of the high-volt-

age battery

a malfunction in the drive system

The reduced power output can be improved by

charging the high-voltage battery (Y page 117).

Power display

Power display : contains two areas:

Area above 0

Here, the current amount of power that the

drive system is feeding to the wheels is dis-

played.

Area 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:

the drive system has not yet started

the charging cable is still connected to the

vehicle socket

there is insufficient power available from the

high-voltage battery

the 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 dis-

play

ReadyReady appears in the lower multifunction

display. The vehicle is ready to drive.

The boost area for maximum acceleration can

be reached using kickdown (Y page 114).

The braking performance of the electric motor

using recuperative braking is, in some operating

modes, either reduced or not effective:

when the condition of charge of the high-volt-

age battery increases

if the high-voltage battery is not yet at a nor-

mal operating temperature

when driving close to the maximum speed

when the vehicle is almost stationary

in transmission position N

during and after ESP stability control

If necessary, counteract the reduced regenera-

tive braking effect by applying the brake your-

self.

Condition of charge display

Condition of charge display : shows the con-

dition of charge of the high-voltage battery.

The charge value is shown as a percentage in the

Energy FlowEnergy Flow menu in the instrument cluster

(Y page 157).

Displays and operation

153

On-board computer and displays

The Energy FlowEnergy Flow menu can also be dis-

played in the COMAND/Audio display.

The condition of charge of the high-voltage bat-

tery has dropped into the reserve range if the

drive system is running and:

the

Drive Battery Reserve LevelDrive Battery Reserve Level mes-

sage appears in the display

the indicator lamp in the instrument cluster

lights up

Charge the high-voltage battery from a condi-

tion of charge of less than 20% at:

an electrical outlet

a charging station

The braking performance of the electric motor

using recuperative braking is, in some operating

modes, either reduced or not effective:

when the condition of charge of the high-volt-

age battery increases

if the high-voltage battery is not yet at a nor-

mal operating temperature

when the vehicle is almost stationary

in transmission position N

during 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, counteract 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 manu-

facturer's operating instructions)

Vehicles with COMAND: switches on the

Voice Control System (see the separate

operating instructions)

Right control panel

Left control panel

Back button

To activate the on-board computer: turn

the SmartKey to position 1 in 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.

154

Displays and operation

On-board computer and displays

Left control panel

;

Calls up the menu and menu bar

Press briefly:

Scrolls in lists

Selects a submenu or function

In the

AudioAudio menu: selects the

previous or next station, when the

preset list or station list is active,

or an audio track or video scene

In the

TelTel (Telephone) menu:

switches to the phone book and

selects a name or telephone num-

ber

Press and hold:

In the

AudioAudio menu: selects a pre-

set list or a station list in the

desired frequency range or an

audio track or video scene using

rapid scrolling

In the

TelTel (Telephone) menu:

starts rapid scrolling if the phone

book is open

Confirms the selection or display

message

In the

TelTel (Telephone) menu:

switches to the telephone book

and starts dialing the selected

number

Right control panel

Mute

Adjusts the volume

Rejects or ends a call

Exits the telephone book/redial

memory

Makes or accepts a call

Switches to the redial memory

Back button

Press briefly:

Back

Vehicles with Audio 20:

Switches off voice-operated con-

trol for navigation (see manufac-

turer's operating instructions)

Vehicles with COMAND:

Switches off the Voice Control

System (see the separate operat-

ing instructions)

Hides display messages or calls up

the last

TripTrip menu function used

Exits the telephone book/redial

memory

Press and hold:

Calls up the standard display in the

TripTrip menu

Multifunction display

Range

;

Time

Text field

Menu bar

Drive program

Transmission position (Y page 112)

Permanent display: outside temperature or

speed (Y page 165)

Displays and operation

155

On-board computer and displays

To 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 seconds.

Text field = shows the selected menu or sub-

menu as well as display messages.

Set the time using the multimedia system;

see the separate operating instructions.

The following messages may appear in the

multifunction display:

j Parking Pilot (Y page 142)

CRUISECRUISE Cruise control (Y page 136)

ë HOLD function (Y page 138)

Menus and submenus

Menu overview

Using the = or ; button on the steering

wheel, open the menu bar.

Operating the on-board computer (Y page 154).

Depending on the equipment installed in the

vehicle, you can call up the following menus:

TripTrip menu (Y page 156)

NaviNavi menu (navigation instructions)

(Y page 158)

AudioAudio menu (Y page 160)

TelTel menu (telephone) (Y page 160)

DriveAssistDriveAssist menu (assistance)

(Y page 162)

Serv.Serv. menu (Y page 163)

Sett.Sett. menu (settings) (Y page 163)

The displays for the AudioAudio, NaviNavi and TelTel menus

may differ slightly to those in your vehicle.

The examples given in this Operator's Manual

apply to vehicles equipped with COMAND.

Trip menu

Standard display

Press and hold the % button on the steer-

ing wheel until the

TripTrip menu with trip odom-

eter : and odometer ; appears.

Trip computer "From Start" or "From

Reset"

Distance

;

Driving time

Average speed

Average electrical consumption

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press the 9 or : button to select

From StartFrom Start or From ResetFrom Reset.

The values in the FromFrom StartStart submenu are cal-

culated from the start of a journey whilst the

values in the

From ResetFrom Reset submenu are calcu-

lated from the last time the submenu was reset

(Y page 158).

In the following cases, the trip computer is auto-

matically reset

From StartFrom Start:

the ignition has been switched off for more

than four hours.

999 hours have been exceeded.

9,999 miles have been exceeded.

When 9,999 hours or 99,999 miles have been

exceeded, the trip computer is automatically

reset

From ResetFrom Reset.

ECO display

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press the 9 or : button to select

ECOECO

DISPLAY

DISPLAY.

If the ignition remains switched off for longer

than four hours, the ECO display will be auto-

matically reset.

For more information on the ECO display, see

(Y page 132).

156

Menus and submenus

On-board computer and displays

Energy flow

Energy flow display

The energy flow display can be shown in the

multifunction display and in the COMAND/

Audio display.

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Confirm by pressing a on the steering

wheel.

Use : or 9 to select

Energy FlowEnergy 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:

Green: energy recuperation

White: normal energy consumption

Red: increased energy consumption

Drive system switched on when the vehi-

cle is stationary or in overrun mode

The drive system is switched on while the vehi-

cle is stationary. Alternatively, the drive system

is switched on while the vehicle is in transmis-

sion position D

or N.

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 battery

is being charged.

The arrows for the energy flow are shown in

green.

Normal driving

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 kinetic energy of the vehicle is converted

into electrical energy. The Recuperative Brake

System is active. The high-voltage battery is

being charged.

The arrows for the energy flow are shown in

green.

Menus and submenus

157

On-board computer and displays

Displaying the range and current con-

sumption

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press 9 or : to select the display with

approximate range and current fuel consump-

tion.

The approximate range depends on the con-

dition of charge of the high-voltage battery

and your current driving style. If the high-volt-

age battery condition of charge is 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:

higher and lower outside temperatures

the style of driving

activated electrical consumers

Digital speedometer

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press the 9 or : button to select the

digital speedometer.

Resetting values

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press the 9 or : button to select the

function that you wish to reset.

Press a to confirm.

Press : to select

YesYes and press a to

confirm.

You can reset the values of the following func-

tions:

Trip odometer

"From Start" trip computer

"From Reset" trip computer

ECO 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 NaviNavi menu, the multifunction display

shows navigation instructions.

You can find further information on navigation in

the separate multimedia system operating

instructions.

Switch on the multimedia system (see sepa-

rate operating instructions).

Press the = or ; button on the steering

wheel to select the

NaviNavi menu.

Route guidance not active

Direction of travel

;

Current road

158

Menus and submenus

On-board computer and displays

Route guidance active

No change of direction announced

Distance to destination

;

Distance to the next change of direction

Current road

"Follow the road's course" symbol

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 indicator

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

Change-of-direction symbol

On multilane roads, new lane recommendations

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 direc-

tion without changing lane.

Other status indicators of the naviga-

tion system

The navigation system displays additional infor-

mation and the vehicle status.

Possible displays:

New Route...New Route... or Calculating RouteCalculating Route

A new route is calculated.

Road Not MappedRoad 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.

No RouteNo Route

No route could be calculated to the selected

destination.

You have reached the destination or an inter-

mediate destination.

Menus and submenus

159

On-board computer and displays

Audio menu

Selecting a radio station

Active station list

;

Station frequency with memory position

The multifunction display shows station ; with

station frequency or station name. The preset

position is only displayed along with station ; if

this has been stored.

Switch on the multimedia system and select

Radio (see the separate operating instruc-

tions).

Press the = or ; button on the steering

wheel to select the

AudioAudio menu.

To select a preset list or station list: press

and briefly hold the 9 or : button until

the preset list or station list in the desired

frequency range is shown.

To select a station: briefly press 9

or :.

SIRIUS XM satellite radio functions like a

normal radio.

You can find further information on operation

in the "Satellite radio" section of the separate

multimedia system operating instructions.

Operating an audio player or audio

media

Current title

Audio data from various audio devices or media

can be played, depending on the equipment

installed in the vehicle.

Switch on the multimedia system and then

audio CD or MP3 mode (see the separate

operating instructions).

Press the = or ; button on the steering

wheel to select the

AudioAudio menu.

To select the next/previous track: briefly

press the 9 or : button.

To select a track from the track list (rapid

scrolling): press and hold the 9 or :

button until desired track appears.

If you press and hold 9 or :, the rapid

scrolling speed is increased. Not all audio

drives or data carriers support this function.

If track information is stored on the audio device

or medium, the multifunction display will show

the number and title of the track.

Video DVD operation

You can only operate DVD videos in the AudioAudio

menu in vehicles with COMAND.

Switch on COMAND and select video DVD

(see the separate operating instructions).

Press the = or ; button on the steering

wheel to select the

AudioAudio menu.

To select the next or previous scene:

briefly press the 9 or : button.

To select a scene from the scene list

(rapid scrolling): press and hold the 9

or : button until desired scene :

appears.

Telephone menu

Introduction

WARNING

If you operate information systems and com-

munication equipment integrated in the vehi-

160

Menus and submenus

On-board computer and displays

cle while driving, you will be distracted from

traffic conditions. You could also lose control

of the vehicle. There is a risk of an accident.

Only operate the equipment when the traffic

situation permits. If you are not sure that this

is possible, park the vehicle paying attention

to traffic conditions and operate the equip-

ment when the vehicle is stationary.

When telephoning, you must observe the legal

requirements for the country in which you are

currently driving.

Switch on the mobile phone (see the manu-

facturer’s operating instructions).

Switch on the multimedia system (see sepa-

rate operating instructions).

Establish a Bluetooth

connection to the mul-

timedia system; see the separate operating

instructions.

Press the = or ; button on the steering

wheel to select the

TelTel menu.

You will see one of the following display mes-

sages in the multifunction display:

Telephone READYTelephone READY or the name of the net-

work provider: the mobile phone has found a

network and is ready to receive.

TelephoneTelephone NoNo serviceservice: there is no network

available or the mobile phone is searching for

a network.

Accepting a call

If someone calls you when you are in the TelTel

menu, a display message appears in the multi-

function display.

You can accept a call at any time, even if you are

not in the

TelTel menu.

Press the 6 button on the steering wheel

to accept an incoming call.

Rejecting or ending a call

You can end or reject a call anytime, even if you

are not in the

TelTel menu.

Press the ~ button on the steering wheel

to reject or end a call.

Selecting an entry in the phone book

Press the = or ; button on the steering

wheel to select the

TelTel menu.

Press the 9, : or a button to

switch to the phone book.

Authorize access to the phone book on the

phone.

Press the 9 or : button to select the

desired name.

To begin rapid scrolling: press and hold the

9 or : button for longer than one sec-

ond.

Rapid scrolling stops when you release the

button or reach the end of the list.

If only one telephone number is stored for

a name: press the 6 or a button to

start dialing.

If there is more than one number for a

particular name:press the 6 or a

button to display the numbers.

Press the 9 or : button to select the

number you want to dial.

Press the 6 or a button to start dialing.

If you do not want to make a call: press the

~ or % button.

Redialing

The on-board computer saves the last names or

numbers dialed in the redial memory.

Press the = or ; button on the steering

wheel to select the

TelTel menu.

Press the 6 button to switch to the redial

memory.

Press the 9 or : button to select the

desired name or number.

Press the 6 or a button to start dialing.

If you do not want to make the call: press

the ~ or % button.

Menus and submenus

161

On-board computer and displays

Assistance menu

Introduction

Depending on the equipment installed in the

vehicle, you have the following options in the

DriveAssistDriveAssist menu:

Displaying the assistance graphic

(Y page 162)

Deactivating/activating ESP

(Y page 162)

Activating/deactivating Active Brake Assist

(Y page 162)

Activating/deactivating ATTENTION ASSIST

(Y page 163)

Activating/deactivating Blind Spot Assist

(Y page 163)

Displaying the assistance graphic

Press the = or ; button on the steering

wheel to select the

DriveAssistDriveAssist menu.

Press 9 or : to select

AssistanceAssistance

Graphic

Graphic.

Press a to confirm.

The assistance graphic displays the status of

and information from the following driving

systems or driving safety systems:

Active Brake Assist (Y page 60)

ATTENTION ASSIST (Y page 148)

Rear window wiper (Y page 95)

Press : to display the ATTENTION ASSIST

assessment.

Deactivating/activating ESP

Observe the important safety notes on ESP

(Y page 62).

WARNING

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 follow-

ing situations:

when using snow chains

in deep snow

on sand or gravel

For further information about ESP

, see

(Y page 62).

Start the drive system.

Press the = or ; button on the steering

wheel to select the

DriveAssistDriveAssist menu.

Press 9 or : to select

ESPESP.

Press a to confirm.

The current selection appears.

To activate/deactivate: press the a but-

ton again.

ESP

is deactivated if the å warning lamp

in the instrument cluster lights up continu-

ously when the drive system is running.

If the ÷ and å warning lamps light up

continuously, ESP

is not available due to a mal-

function.

Observe the information on warning lamps

(Y page 195).

Observe the information on display messages

(Y page 168).

Activating or deactivating Active Brake

Assist

Press the = or ; button on the steering

wheel to select the

DriveAssistDriveAssist menu.

Press the 9 or : button to select

Brake AssistBrake Assist.

Press a to confirm.

The current selection appears.

To activate/deactivate: press the a but-

ton again.

When Active Brake Assist is deactivated, the

æ symbol appears in the multifunction dis-

play in the assistance graphic display.

Further information on Active Brake Assist

(Y page 60).

162

Menus and submenus

On-board computer and displays

Activating/deactivating ATTENTION

ASSIST

Press the = or ; button on the steering

wheel to select the

DriveAssistDriveAssist menu.

Press the 9 or : button to select

Attention AssistAttention Assist.

Press a to confirm.

The current selection appears.

Press a to confirm.

Press the : or 9 button to set

OffOff,

StandardStandard or SensitiveSensitive.

Press the a button to save the setting.

When ATTENTION ASSIST is deactivated, the

é symbol appears in the multifunction dis-

play in the assistance graphics display.

For further information about ATTENTION

ASSIST, see (Y page 148).

Activating/deactivating Blind Spot

Assist

Press the = or ; button on the steering

wheel to select the

DriveAssistDriveAssist menu.

Press the 9 or : button to select

Blind Spot AssistBlind Spot Assist.

Press a to confirm.

The current selection appears.

To activate/deactivate: press the a but-

ton again.

For further information about Blind Spot Assist,

see (Y page 150).

Service menu

Depending on the equipment installed in the

vehicle, you have the following options in the

Serv.Serv. menu:

Calling up display messages in message

memory (Y page 167)

Checking the tire pressure electronically

(Y page 263)

Calling up the service due date

(Y page 233)

Settings menu

Introduction

Depending on the equipment installed in the

vehicle, you have the following options in the

Sett.Sett. menu:

Changing the E-CELL settings

Changing the instrument cluster settings

Changing the light settings

Changing the vehicle settings

Restoring the factory settings

E‑CELL menu

Departure time

In the

E-CELLE-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 displays:

the expected charge time of the high-voltage

battery or

the RANGE PLUS condition of charge for the

departure time set.

Changing the departure time

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press 9 or : on the steering wheel to

select the

E‑CELLE‑CELL menu.

Press 9 or : to select

Depart.Depart. TimeTime.

Press a to confirm.

You will see the selected setting.

Press the : or 9 button to select

AA, BB

or Change CChange C.

Press a to confirm.

Press = or ; to select

Depart.Depart. TimeTime

Hours

Hours.

Press the 9 or : button to set the

hour.

Press = or ; to select

Depart.Depart. TimeTime

Minutes

Minutes.

Press 9 or : to set the minutes.

Press a to confirm.

After changing from one menu to another, the

departure time setting is stored.

Menus and submenus

163

On-board computer and displays

Selecting the departure time

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press 9 or : on the steering wheel to

select the

E‑CELLE‑CELL menu.

Press 9 or : to select

Depart.Depart. TimeTime.

Press a to confirm.

Press the : or 9 button to select one

of the three departure times or

TimerTimer OffOff (no

timer active).

Press a to confirm.

Charging with RANGE PLUS

If you have engaged Pand the charging cable is

connected, the on-board computer displays:

the expected charge time of the high-voltage

battery or

the RANGE PLUS condition of charge for the

departure time set

RANGE PLUS charges when:

you have activated RANGE PLUS via the cen-

ter console prior to charging and

the high-voltage battery is fully charged

If charging is not complete by departure time,

the maximum range will not be available.

Example:

Set departure time: 6:41 a.m.

End time for standard high-voltage battery

charging: 6:00 a.m.

RANGE PLUS condition of charge at

6:41 a.m.: half of the additional range

The 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 departure

time.

To heat or cool the vehicle interior for a

desired departure time, the high-voltage bat-

tery must be sufficiently charged. Activate the

climate control function primarily when the

high-voltage battery is being charged. You

must also set a departure time using the

E-E-

CELL

CELL submenu (Y page 163).

Switching "Pre-entry climate control at

departure time" on/off

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Use 9 or : to select the

E-CELLE-CELL sub-

menu.

Press a to confirm.

Press 9 or : to select

Pre-EntryPre-Entry

Climate Ctrl. at Departure Time:

Climate Ctrl. at Departure Time:.

Press a to 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 heat-

ing button.

You can use the on-board computer to specify

up to three departure times in the

E-CELLE-CELL sub-

menu. One of the specified departure times may

be preselected (Y page 163).

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 com-

puter.

Activating/deactivating pre-entry climate

control via the key

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Use 9 or : to select the

E-CELLE-CELL sub-

menu.

Press a to confirm.

Press 9 or : to select

Pre-EntryPre-Entry

Climate Ctrl. (Via Key):

Climate Ctrl. (Via Key):.

Press a to activate or deactivate.

If pre-entry climate control via key is activa-

ted, pre-entry climate control using the key is

switched on temporarily when you unlock the

vehicle.

164

Menus and submenus

On-board computer and displays

Setting the maximum charge current

Before charging the high-voltage battery, check

the maximum permissible charge current for the

relevant power socket.

You can set a maximum charge current in the

E-E-

CELL

CELL menu.

It is only necessary to select the maximum

charge current if there are no charge current

settings on the charging cable.

The maximum charge current values in the

on-board computer may deviate from the

charging cable values.

Example: changing the charge current

Setting the maximum charge current

This menu is not available in some coun-

tries. In this case, the maximum charge cur-

rent for the power socket is limited to a fixed

level, depending on the country concerned.

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Use 9 or : to select the

E-CELLE-CELL sub-

menu.

Press a to confirm.

Press 9 or : to select

MaximumMaximum

Charge Current:

Charge Current:.

Press a to confirm.

Press 9 or : in the submenu to select

desired maximum charge current :.

Press the a button on the multifunction

steering wheel to confirm.

The high-voltage battery is charged with the

selected maximum charge current.

Instrument cluster

Selecting the distance unit

The

Display Unit Speed-/Odometer:Display Unit Speed-/Odometer: func-

tion allows you to choose whether certain dis-

plays appear in kilometers or miles in the mul-

tifunction display.

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

Instrument ClusterInstrument Cluster submenu.

Press a to confirm.

Press the : or 9 button to select the

Display Unit Speed-/OdometerDisplay Unit Speed-/Odometer function.

You will see the selected setting:

kmkm or milesmiles.

Press the a button to save the setting.

The selected unit of measurement for distance

applies to:

Digital speedometer in the

TripTrip menu

Odometer and the trip odometer

Trip computer

Current energy consumption and approxi-

mate range

Navigation instructions in the

NaviNavi menu

Cruise control

ASSYST PLUS service interval display

Switching the additional speedometer

on/off

If the additional speedometer is switched on,

the speed is shown in the status area of the

multifunction display instead of the outside tem-

perature.

The speed display is inverse to the speedome-

ter.

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

Instrument ClusterInstrument Cluster submenu.

Press a to confirm.

Press the : or 9 button to select the

Speedometer [km/h]Speedometer [km/h] or SpeedometerSpeedometer

[mph]

[mph] function.

You will see the selected setting:

OnOn or OffOff.

Press the a button to save the setting.

Selecting permanent display

The

Permanent Display:Permanent Display: function allows you

to choose whether the multifunction display

always shows the outside temperature or the

speed.

The speed display is inverse to the speedome-

ter.

Menus and submenus

165

On-board computer and displays

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

Instrument ClusterInstrument Cluster submenu.

Press a to confirm.

Press the : or 9 button to select the

Permanent Display:Permanent Display: function.

The current setting

Outside TemperatureOutside Temperature

or Speedometer [km/h]Speedometer [km/h]/SpeedometerSpeedometer

[mph]

[mph] appears.

Press the a button to save the setting.

Lights

Switching the daytime running lamps on/

off

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

LightLight submenu.

Press a to confirm.

Press the : or 9 button to select the

Daytime Running LightsDaytime Running Lights function.

If the

DaytimeDaytime RunningRunning LightsLights function has

been switched on, the multifunction display

shows the cone of light and the W symbol

in orange.

Press the a button to save the setting.

Further information on daytime running lamps

(Y page 87).

Vehicle

Activating/deactivating the automatic

door locking mechanism

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

VehicleVehicle submenu.

Press a to confirm.

Press the : or 9 button to select the

Automatic Door LockAutomatic Door Lock function.

If the

Automatic Door LockAutomatic Door Lock function is

switched on, the multifunction display shows

the doors in orange.

Press the a button to save the setting.

If you activate the

Automatic door locksAutomatic door locks

function, the vehicle is centrally locked above a

speed of around 9 mph (15 km/h).

For further information on the automatic locking

feature, see (Y page 73).

Activating/deactivating the acoustic

locking verification signal

If you switch on the AcousticAcoustic LockLock function, an

acoustic signal sounds when you lock the vehi-

cle.

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

VehicleVehicle submenu.

Press a to confirm.

Press the : or 9 button to select the

Acoustic LockAcoustic Lock function.

If the

Acoustic LockAcoustic Lock function is activated,

the multifunction display shows the &

symbol in orange.

Press the a button to save the setting.

Restoring the factory settings

Press the = or ; button on the steering

wheel to select the

Sett.Sett. menu.

Press the : or 9 button to select the

Factory SettingFactory Setting submenu.

Press a to confirm.

The

Reset All Settings?Reset All Settings? function

appears.

Press the : or 9 button to select

NoNo or

YesYes.

Press the a button to confirm the selec-

tion.

If you have selected

YesYes, the multifunction

display shows a confirmation message.

For safety reasons, not all functions are reset.

For safety reasons, the Daytime RunningDaytime Running

Lights

Lights function in the LightLight submenu is only

reset if the vehicle is stationary.

166

Menus and submenus

On-board computer and displays

Display messages

Introduction

General notes

Display messages appear in the multifunction display.

Display messages with graphic displays may be shown in simplified form in the Operator's Manual

and may therefore differ from the multifunction display.

Please respond in accordance with the display messages and follow the additional notes in this

Operator's Manual.

Certain display messages are accompanied by an audible warning tone or a continuous tone.

When the ignition is switched off, all display messages are deleted, apart from some high-priority

display messages. Once the causes of the high-priority display messages have been rectified, the

corresponding display messages are also deleted.

When you stop and park the vehicle, please observe the notes on:

HOLD function (Y page 138)

Parking (Y page 128)

Hiding display messages

Press the a or % button on the steering wheel.

The multifunction display hides the display message.

The multifunction display shows high-priority display messages in red. Some high-priority display

messages cannot be hidden.

The multifunction display shows these messages continuously until the causes for the messages

have been remedied.

Message memory

The on-board computer saves certain display messages in the message memory. You can call up

the display messages:

Press the = or ; button on the steering wheel to select the

Serv.Serv. menu.

If there are display messages, the multifunction display shows

2 Messages2 Messages, for example.

Press the 9 or : button to select the entry, e.g.

2 Messages2 Messages.

Press a to confirm.

Press the 9 or : button to scroll through the display messages.

Display messages

167

On-board computer and displays

Safety systems

Display messages

Possible causes/consequences and MM Solutions

!÷

Currently Unavaila‐Currently Unavaila‐

ble See Operator'sble See Operator's

ManualManual

ABS (Anti-lock Braking System), BAS (Brake Assist), ESP

(Electronic

Stability Program), the HOLD function, RBS (Recuperative Brake Sys-

tem) and hill start assist are temporarily unavailable.

Active Brake Assist may have also failed.

The !, ÷, å and é (USA only) or J (Canada only)

warning lamps in the instrument cluster may also light up.

ATTENTION ASSIST is deactivated.

Possible causes are:

Self-diagnosis is not yet complete.

The on-board voltage may be insufficient.

WARNING

The braking performance of the electric motor using recuperative

braking may be either reduced or not effective. If you do not make an

additional effort to apply the brake yourself, the braking effect may not

be sufficient. If necessary, counteract the reduced regenerative brak-

ing effect by applying the brake yourself.

The brake system continues to function normally, but without the

functions listed above. The wheels could therefore lock if you brake

hard, for example.

The steerability and braking characteristics may be severely affected.

The braking distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Carefully drive a short distance on a suitable stretch of road, making

slight steering movements at a speed above 12 mph (20 km/h).

If the display message disappears, the functions mentioned above

are available again.

If the multifunction display still shows the display message:

Drive on carefully.

Visit a qualified specialist workshop immediately.

!÷

Inoperative SeeInoperative See

Operator's ManualOperator's Manual

ABS, BAS, ESP

, the HOLD function, RBS and hill start assist are not

available due to a malfunction.

Active Brake Assist may have also failed.

The !, ÷, å, é (USA only) or J (Canada only) and

$ (USA only) or J (Canada only) warning lamps in the instru-

ment cluster may also light up.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative

braking may be either reduced or not effective. If you do not make an

additional effort to apply the brake yourself, the braking effect may not

be sufficient. If necessary, counteract the reduced regenerative brak-

ing effect by applying the brake yourself.

168

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

The brake system continues to function normally, but without the

functions listed above. The wheels could therefore lock if you brake

hard, for example.

The steerability and braking characteristics may be severely affected.

The braking distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Drive on carefully.

Visit a qualified specialist workshop immediately.

Currently Unavaila‐Currently Unavaila‐

ble See Operator'sble See Operator's

ManualManual

ESP

, BAS, the HOLD function, RBS and hill start assist are tempora-

rily unavailable.

Active Brake Assist may have also failed.

The , ÷, å and é (USA only) or J (Canada only) warning

lamps in the instrument cluster may also light up.

ATTENTION ASSIST is deactivated.

The self-diagnosis function might not be complete, for example.

WARNING

The braking performance of the electric motor using recuperative

braking may be either reduced or not effective. If you do not make an

additional effort to apply the brake yourself, the braking effect may not

be sufficient. If necessary, counteract the reduced regenerative brak-

ing effect by applying the brake yourself.

The brake system continues to function normally, but without the

functions listed above.

The braking distance in an emergency braking situation can thus

increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Carefully drive a suitable distance, making slight steering move-

ments at a speed above 12 mph (20 km/h).

If the display message disappears, the functions mentioned above

are available again.

If the multifunction display still shows the display message:

Drive on carefully.

Visit a qualified specialist workshop immediately.

Display messages

169

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Currently Unavaila‐Currently Unavaila‐

ble See Operator'sble See Operator's

ManualManual

ESP

, BAS, the HOLD function, RBS and hill start assist are not avail-

able due to a malfunction.

Active Brake Assist may have also failed.

The , ÷, å and é (USA only) or J (Canada only) warning

lamps in the instrument cluster may also light up.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative

braking may be either reduced or not effective. If you do not make an

additional effort to apply the brake yourself, the braking effect may not

be sufficient. If necessary, counteract the reduced regenerative brak-

ing effect by applying the brake yourself.

The brake system continues to function normally, but without the

functions listed above.

The braking distance in an emergency braking situation can thus

increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Drive on carefully.

Visit a qualified specialist workshop immediately.

Inoperative SeeInoperative See

Operator's ManualOperator's Manual

EBD (electronic brake force distribution), ABS, BAS, ESP

, the HOLD

function, RBS and hill start assist are not available due to a malfunc-

tion.

Active Brake Assist may have also failed.

A warning tone sounds.

The ÷, å, ! and é (USA only) or J (Canada only)

warning lamps in the instrument cluster may also light up.

WARNING

The braking performance of the electric motor using recuperative

braking may be either reduced or not effective. If you do not make an

additional effort to apply the brake yourself, the braking effect may not

be sufficient. If necessary, counteract the reduced regenerative brak-

ing effect by applying the brake yourself.

The brake system continues to function normally, but without the

functions listed above. The front and rear wheels could therefore lock

if you brake hard, for example.

The steerability and braking characteristics may be severely affected.

The braking distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Drive on carefully.

Visit a qualified specialist workshop immediately.

170

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

F(USA

only)!(Canada

only)

Turn On the Igni‐Turn On the Igni‐

tiontion toto ReleaseRelease thethe

Parking BrakeParking Brake

The red F (USA only) or ! (Canada only) indicator lamp lights

up.

You attempted to release the electric parking brake while the ignition

was switched off.

SmartKey: turn the SmartKey to position 1 in the ignition lock.

KEYLESS-GO: switch on the ignition.

F(USA

only)!(Canada

only)

PleasePlease ReleaseRelease Park‐Park‐

ing Brakeing Brake

The red F (USA only) or ! (Canada only) indicator lamp flashes

and a warning tone sounds. A condition for automatic release of the

electric parking brake is not fulfilled (Y page 130).

You are driving with the electric parking brake applied.

Release the electric parking brake manually.

The red F (USA only) or ! (Canada only) indicator lamp flashes

and a warning tone sounds.

You are using the electric parking brake for emergency braking

(Y page 130).

F(USA

only)!(Canada

only)

Parking Brake SeeParking Brake See

Operator's ManualOperator's Manual

The yellow ! warning lamp lights up.

The electric parking brake is malfunctioning.

To apply:

Switch the ignition off.

Press the electric parking brake handle for at least ten seconds.

Shift the transmission to position P.

Consult a qualified specialist workshop.

The yellow ! warning lamp and the red F (USA only) or !

(Canada only) indicator lamp light up.

The electric parking brake is malfunctioning.

To release:

Switch off the ignition and turn it back on.

Release the electric parking brake manually.

Release the electric parking brake automatically (Y page 130).

If the electric parking brake still cannot be released:

Do not drive on.

Consult a qualified specialist workshop.

Display messages

171

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

The red F (USA only) or ! (Canada only) indicator lamp flashes

and the yellow ! warning lamp lights up.

The electric parking brake is malfunctioning.

To release:

Switch off the ignition and turn it back on.

Release the electric parking brake manually.

To apply:

Switch off the ignition and turn it back on.

Apply the electric parking brake manually.

If the red F (USA only) or ! (Canada only) indicator lamp con-

tinues to flash:

Do not drive on.

Secure the vehicle against rolling away (Y page 276).

Shift the transmission to position P.

Turn the front wheels towards the curb.

Consult a qualified specialist workshop.

The yellow ! warning lamp lights up. The red F (USA only)

or ! (Canada only) indicator lamp flashes for about ten seconds

after the electric parking brake has been applied or released. It then

goes out or remains lit.

The electric parking brake is malfunctioning.

Switch off the ignition and turn it back on.

Apply the electric parking brake.

If it is not possible to engage the electric parking brake:

Shift the transmission to position P.

Visit a qualified specialist workshop.

If it is not possible to release the electric parking brake manually:

Release the electric parking brake automatically (Y page 130).

If the electric parking brake still cannot be released:

Consult a qualified specialist workshop.

The yellow ! warning lamp lights up. If you manually apply or

release the electric parking brake, the red F (USA only) or !

(Canada only) indicator lamp flashes.

The electric parking brake is malfunctioning. It is not possible to apply

the electric parking brake manually.

Shift the selector lever to P, as the electric parking brake is not

applied automatically.

Visit a qualified specialist workshop.

172

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

F(USA

only)!(Canada

only)

Parking Brake Inop‐Parking Brake Inop‐

erativeerative

The yellow ! warning lamp lights up. The red F (USA only)

or ! (Canada only) indicator lamp flashes for about ten seconds

after the electric parking brake has been applied or released. It then

goes out or remains lit.

The electric parking brake is malfunctioning, e.g. because of over-

voltage or undervoltage.

Rectify the cause of the overvoltage or undervoltage, e.g. by charg-

ing the battery or restarting the drive system.

Engage or release the electric parking brake.

If it remains impossible to apply or release the electric parking brake:

Switch off the ignition and turn it back on.

Engage or release the electric parking brake.

If the electric parking brake still cannot be released:

Consult a qualified specialist workshop.

If the electric parking brake still cannot be applied:

Visit a qualified specialist workshop.

The yellow ! warning lamp lights up and the red F (USA only)

or ! (Canada only) indicator lamp flashes.

It is not possible to apply the electric parking brake manually.

Shift the transmission to position P.

Visit a qualified specialist workshop.

$(USA

only)J(Canada

only)

Check Brake FluidCheck Brake Fluid

LevelLevel

There is not enough brake fluid in the brake fluid reservoir.

A warning tone sounds. The $ (USA only) or J (Canada only)

warning lamps in the instrument cluster may also light up.

WARNING

The braking effect may be impaired.

There is a risk of an accident.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions. Do not continue driving

under any circumstances.

Secure the vehicle against rolling away (Y page 128).

Consult a qualified specialist workshop.

Do not add brake fluid. This does not correct the malfunction.

CheckCheck BrakeBrake PadPad WearWear

The brake pads/linings have reached their wear limit.

Visit a qualified specialist workshop.

InoperativeInoperative

One or more main features of the mbrace system are malfunctioning.

Visit a qualified specialist workshop.

Display messages

173

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

ActiveActive BrakeBrake AssistAssist

FunctionsFunctions CurrentlyCurrently

Limited See Opera‐Limited See Opera‐

tor's Manualtor's Manual

Active Brake Assist is temporarily inoperative.

Possible causes are:

the radar sensor system is temporarily inoperative, e.g. due to elec-

tromagnetic radiation emitted by nearby TV or radio stations or

other sources of electromagnetic radiation

the system is outside the operating temperature range

the on-board voltage is too low

When the causes stated above no longer apply, the display message

disappears.

Active Brake Assist is operational again.

If the display message does not disappear:

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Start the drive system again.

Active BrakeActive Brake

Assist:Assist: SystemSystem Inop‐Inop‐

erativeerative

Active Brake Assist is unavailable due to a malfunction. Situation-

dependent parking assistance may also have failed.

Visit a qualified specialist workshop immediately.

RadarRadar SensorsSensors DirtyDirty

See Operator's Man‐See Operator's Man‐

ualual

The radar sensor system is malfunctioning.

Possible causes are:

Dirt on sensors

Heavy rain or snow

When driving on inter-urban roads without traffic or infrastructure,

e.g. in desert-like areas

Active Brake Assist is malfunctioning or is temporarily unavailable.

A warning tone also sounds.

Active Brake Assist is available again once the cause of the problem is

no longer present. The display message disappears.

If the display message does not disappear:

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Switch off the drive system.

Clean all sensors (Y page 237).

Start the drive system again.

The display message disappears.

Acoustic VehicleAcoustic Vehicle

Indication Inopera‐Indication Inopera‐

tivetive

The sound generator is not working. The vehicle can still be driven;

however, no vehicle sounds can be generated. As a result, your vehicle

may not be heard by other road users until it is very close to them, or

it may not be heard at all.

Drive with particular care, allowing for the possibility that other road

users may behave unpredictably.

Visit a qualified specialist workshop.

174

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

SRSSRS MalfunctionMalfunction Ser‐Ser‐

vice Requiredvice Required

The restraint system is malfunctioning. The 6 warning lamp also

lights up in the instrument cluster.

WARNING

The air bags or Emergency Tensioning Devices may either be triggered

unintentionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Visit a qualified specialist workshop immediately.

For further information about the restraint system, see (Y page 38).

Front Left Malfunc‐Front Left Malfunc‐

tion Servicetion Service

RequiredRequired or FrontFront

Right Malfunction

Service RequiredService Required

The restraint system is malfunctioning at the front on the left or right.

The 6 warning lamp also lights up in the instrument cluster.

WARNING

The air bags or Emergency Tensioning Devices may either be triggered

unintentionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Visit a qualified specialist workshop immediately.

Rear Left Malfunc‐Rear Left Malfunc‐

tion Servicetion Service

RequiredRequired or RearRear

Right Malfunction

Service RequiredService Required

The rear left-hand or right-hand restraint system is malfunctioning.

The 6 warning lamp also lights up in the instrument cluster.

WARNING

The air bags or Emergency Tensioning Devices may either be triggered

unintentionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Visit a qualified specialist workshop immediately.

RearRear CenterCenter Malfunc‐Malfunc‐

tion Servicetion Service

RequiredRequired

The rear center restraint system is malfunctioning. The 6 warning

lamp also lights up in the instrument cluster.

WARNING

The air bags or Emergency Tensioning Devices may either be triggered

unintentionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Visit a qualified specialist workshop immediately.

Left Side CurtainLeft Side Curtain

Airbag MalfunctionAirbag Malfunction

Service RequiredService Required or

Right Side CurtainRight Side Curtain

Airbag MalfunctionAirbag Malfunction

Service RequiredService Required

The left-hand or right-hand window curtain air bag is malfunctioning.

The 6 warning lamp also lights up in the instrument cluster.

WARNING

The left or right window curtain air bag may either be triggered unin-

tentionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Visit a qualified specialist workshop immediately.

Display messages

175

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

FrontFront PassengerPassenger Air‐Air‐

bag Disabled Seebag Disabled See

Operator's ManualOperator's Manual

The front-passenger front air bag is deactivated during the journey,

even though:

an adult

a person of the corresponding stature is on the front-passenger seat

If additional forces are applied to the seat, the system may interpret

the occupant's weight as lower than it actually is.

WARNING

The front-passenger air bag does not deploy during an accident.

There is an increased risk of injury.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Switch the ignition off.

Have the occupant get out of the vehicle.

Keep the seat unoccupied, close the front-passenger door and

switch on the ignition.

Observe the PASSENGER AIR BAG indicator lamps in the center

console and the multifunction display and check the following:

Seat unoccupied and ignition switched on:

a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps must light up simulta-

neously for approximately six seconds

the PASSENGER AIR BAG OFF indicator lamp must then light up

and remain lit after the self-diagnosis. If the indicator lamp is on,

OCS (Occupant Classification System) has disabled the front-

passenger front air bag (Y page 46)

The

Front Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's

Manual

Manual or Front Passenger¶Airbag Disabled¶See Opera‐Front Passenger¶Airbag Disabled¶See Opera‐

tor's Manual

tor's Manual display messages must not be shown in the mul-

tifunction display

Wait for a period of at least 60 seconds until the necessary system

checks have been completed.

Make sure that the display messages do not appear in the multi-

function display.

If these conditions are fulfilled, the front-passenger seat can be occu-

pied again. Whether the PASSENGER AIR BAG OFF or ON indicator

lamp remains lit or goes out depends on how OCS classifies the occu-

pant.

If the conditions are not fulfilled, the system is not operating correctly.

Visit a qualified specialist workshop immediately.

For further information about the Occupant Classification System, see

(Y page 46).

176

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

FrontFront PassengerPassenger Air‐Air‐

bag Enabled Seebag Enabled See

Operator's ManualOperator's Manual

The front-passenger front air bag is enabled during the journey, even

though:

a child, a small adult or an object weighing less than the system's

weight threshold is located on the front-passenger seat

the front-passenger seat is unoccupied

The system may detect objects or forces applying additional weight on

the seat.

WARNING

The front-passenger front air bag may deploy unintentionally.

There is an increased risk of injury.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Switch the ignition off.

Open the front-passenger door.

Remove the child and the child restraint system from the front-

passenger seat.

Make sure that there are no objects on the seat adding to the

weight.

The system may otherwise detect the additional weight and inter-

pret the seat occupant's weight as greater than it actually is.

Keep the seat unoccupied, close the front-passenger door and

switch on the ignition.

Observe the PASSENGER AIR BAG indicator lamps in the center

console and the multifunction display and check the following:

Seat unoccupied and ignition switched on:

a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and

PASSENGER AIR BAG ON indicator lamps must light up simulta-

neously for approximately six seconds

the PASSENGER AIR BAG OFF indicator lamp must then light up

and remain lit after the self-diagnosis. If the indicator lamp is on,

OCS has disabled the front-passenger front air bag (Y page 46)

The

Front Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's

Manual

Manual or Front Passenger Airbag Disabled See Opera‐Front Passenger Airbag Disabled See Opera‐

tor's Manual

tor's Manual display messages must not be shown in the mul-

tifunction display

Wait for a period of at least 60 seconds until the necessary system

checks have been completed.

Make sure that the display messages do not appear in the multi-

function display.

If these conditions are fulfilled, the front-passenger seat can be occu-

pied again. Whether the PASSENGER AIR BAG OFF or ON indicator

lamp remains lit or goes out depends on how OCS classifies the occu-

pant.

If the conditions are not fulfilled, the system is not operating correctly.

Display messages

177

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Visit a qualified specialist workshop immediately.

For further information about the Occupant Classification System, see

(Y page 46).

Lights

Vehicles with LED bulbs in the light clusters:

The display message for the corresponding lamp only appears when all of the LEDs in the lamp

have failed.

Display messages

Possible causes/consequences and MM Solutions

Check Left Corner‐Check Left Corner‐

ing Lighting Light or CheckCheck

Right Cornering

LightLight

The left or right-hand cornering light is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

CheckCheck LeftLeft LowLow BeamBeam

or Check Right LowCheck Right Low

Beam

The left or right-hand low-beam headlamp is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Rear LeftCheck Rear Left

Turn SignalTurn Signal or

Check Rear RightCheck Rear Right

Turn SignalTurn Signal

The rear left-hand or rear right-hand turn signal is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Front LeftCheck Front Left

Turn SignalTurn Signal or

Check Front RightCheck Front Right

Turn SignalTurn Signal

The front left-hand or front right-hand turn signal is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Left MirrorCheck Left Mirror

Turn SignalTurn Signal or

Check Right MirrorCheck Right Mirror

Turn SignalTurn Signal

The turn signal in the left-hand or right-hand exterior mirror is defec-

tive.

Visit a qualified specialist workshop.

Check Center BrakeCheck Center Brake

LampLamp

The high-mounted brake lamp is faulty.

Visit a qualified specialist workshop.

178

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Check Left BrakeCheck Left Brake

LampLamporCheck RightCheck Right

Brake Lamp

The left or right-hand brake lamp is defective.

Visit a qualified specialist workshop.

Check Left HighCheck Left High

BeamBeam or Check RightCheck Right

High Beam

The left or right-hand high beam is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

License Plate LampLicense Plate Lamp

The left or right-hand license plate lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Rear Fog LampRear Fog Lamp

The rear fog lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Front LeftCheck Front Left

Parking LampParking Lamp or

Check Front RightCheck Front Right

Parking LampParking Lamp

The front left or front right parking or standing lamp is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Backup LightBackup Light

The backup lamp is defective.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Left TailCheck Left Tail

LampLamp or Check RightCheck Right

Tail Lamp

The left or right-hand tail lamp is defective.

Visit a qualified specialist workshop.

Check Front LeftCheck Front Left

Sidemarker LampSidemarker Lamp or

Check Front RightCheck Front Right

Sidemarker LampSidemarker Lamp

The front left-hand or front right-hand side marker lamp is faulty.

Visit a qualified specialist workshop.

Display messages

179

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Check Rear LeftCheck Rear Left

Sidemarker LampSidemarker Lamp or

Check Rear RightCheck Rear Right

Sidemarker LampSidemarker Lamp

The rear left-hand or rear right-hand side marker lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 90).

Visit a qualified specialist workshop.

Check Left DaytimeCheck Left Daytime

Running LightRunning Light or

CheckCheck RightRight DaytimeDaytime

Running LightRunning Light

The left or right-hand daytime running lamp is faulty.

Visit a qualified specialist workshop.

Active HeadlampsActive Headlamps

InoperativeInoperative

The active light function is faulty.

Visit a qualified specialist workshop.

Malfunction SeeMalfunction See

Operator's ManualOperator's Manual

The exterior lighting is malfunctioning.

Visit a qualified specialist workshop.

Auto Lamp FunctionAuto Lamp Function

InoperativeInoperative

The light sensor is defective.

Visit a qualified specialist workshop.

Switch Off LightsSwitch Off Lights

The lights are still switched on when you leave the vehicle. A warning

tone also sounds.

Turn the light switch to the Ã position.

Switch On HeadlampsSwitch On Headlamps

You are driving with low-beam headlamps switched off.

Turn the light switch to the L or Ã position.

180

Display messages

On-board computer and displays

Drive system

Display messages

Possible causes/consequences and MM Solutions

Check Coolant SeeCheck Coolant See

Operator's ManualOperator's Manual

The coolant level is too low.

Avoid making long journeys with too little coolant in the cooling

system. The drive system will otherwise be damaged.

If the coolant needs topping up more often than usual, have the

cooling system checked at a qualified specialist workshop.

See Operator's Man‐See Operator's Man‐

ualual

The 12 V battery is no longer being charged.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the drive system.

Secure the vehicle against rolling away (Y page 128).

Do not drive on.

Do not tow the vehicle.

Consult a qualified specialist workshop.

Stop Vehicle SeeStop Vehicle See

Operator's ManualOperator's Manual

The 12 V battery is no longer being charged and the battery charge

level is too low.

A warning tone also sounds.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the drive system.

Secure the vehicle against rolling away (Y page 128).

Do not drive on.

Do not tow the vehicle.

Consult a qualified specialist workshop.

High-voltage battery

Display messages

Possible causes/consequences and MM Solutions

Battery ReserveBattery Reserve

LevelLevel

The condition of charge of the high-voltage battery has dropped into

the reserve range.

When the remaining range is 0 km, the message appears again. The

power available is then continuously reduced. The reduction in power

is represented in the E-CELL display (Y page 152).

Charge the high-voltage battery.

BatterieleistungBatterieleistung zuzu

gering, Anhalten,gering, Anhalten,

sofort ladensofort laden(Battery

capacity too low. Stop

Charge immediately)

A warning tone also sounds. The E‑CELL display (Y page 152) and the

charge level display (Y page 153) go down to 0. The condition of

charge of the high-voltage battery is so low that operation is no longer

possible. The drive system cannot be restarted.

If you then try to restart the drive system, the

BatterieleistungBatterieleistung zuzu

gering,

gering, Anhalten,Anhalten, sofortsofort ladenladen (Battery capacity too low. Stop

Charge immediately) message appears.

Park the vehicle and charge the high-voltage battery.

Display messages

181

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Malfunction VisitMalfunction Visit

WorkshopWorkshop

Malfunctions are present in the drive system and/or in the cooling

system.

Visit a qualified specialist workshop immediately.

Without startingWithout starting

engine again, con‐engine again, con‐

sult workshopsult workshop

The vehicle's high-voltage electrical system is malfunctioning. A warn-

ing tone also sounds.

Do not switch off the drive system.

Visit a qualified specialist workshop immediately.

Stop Switch EngineStop Switch Engine

OffOff

There is a serious malfunction in the drive system. A warning tone also

sounds.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions. Do not continue driving

under any circumstances.

Do not tow the vehicle.

Consult a qualified specialist workshop immediately.

Driving systems

Display messages

Possible causes/consequences and MM Solutions

Attention Assist:Attention Assist:

Take a Break!Take a Break!

Based on certain criteria, ATTENTION ASSIST has detected fatigue or

a lack of concentration on the part of the driver. A warning tone also

sounds.

If necessary, take a break.

During long journeys, take regular breaks in good time so you get

enough rest.

Attention AssistAttention Assist

InoperativeInoperative

ATTENTION ASSIST is inoperative.

Visit a qualified specialist workshop.

OffOff

The HOLD function is deactivated. the vehicle is skidding.

A warning tone also sounds.

Reactivate the HOLD function later (Y page 138).

The HOLD function is deactivated. When the brake pedal is firmly

depressed, an activation condition is not fulfilled.

A warning tone also sounds.

Check the activation conditions for the HOLD function

(Y page 138).

182

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Blind Spot AssistBlind Spot Assist

Currently Unavaila‐Currently Unavaila‐

ble See Operator'sble See Operator's

ManualManual

Blind Spot Assist is temporarily inoperative.

Possible causes are:

the radar sensor system is temporarily inoperative, e.g. due to elec-

tromagnetic radiation emitted by nearby TV or radio stations or

other sources of electromagnetic radiation

the radar sensor system is outside the operating temperature range

The yellow 9 indicator lamps also light up in the exterior mirrors.

When the causes stated above no longer apply, the display message

disappears.

Blind Spot Assist is operational again.

If the display message does not disappear:

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Start the drive system again.

Blind Spot AssistBlind Spot Assist

InoperativeInoperative

Blind Spot Assist is faulty.

The yellow 9 indicator lamps also light up in the exterior mirrors.

Visit a qualified specialist workshop.

Parking Pilot Can‐Parking Pilot Can‐

celedceled

The driver's door is open and the driver's seat belt has not been fas-

tened.

Repeat the parking process with the seat belt fastened and the

driver's door closed.

You have inadvertently touched the multifunction steering wheel while

steering intervention was active.

While steering intervention is active, make sure that the multifunc-

tion steering wheel is not touched unintentionally.

The vehicle has started to skid and ESP

has intervened.

Use Parking Pilot again later (Y page 142).

Parking Pilot Inop‐Parking Pilot Inop‐

erativeerative

You have just carried out a large number of turning or parking maneu-

vers.

Parking Pilot will become available again after approximately ten

minutes (Y page 142).

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Switch off the drive system and start it again.

If the multifunction display still shows the display message:

Visit a qualified specialist workshop.

Parking Assist PARKTRONIC is malfunctioning.

Visit a qualified specialist workshop.

Display messages

183

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Parking Pilot Fin‐Parking Pilot Fin‐

ishedished

The vehicle is parked. A warning tone also sounds.

The display message disappears automatically.

CruiseCruise ControlControl Inop‐Inop‐

erativeerative

Cruise control is malfunctioning.

A warning tone also sounds.

Visit a qualified specialist workshop.

Cruise ControlCruise Control

- - - mph- - - mph

A condition for activating cruise control has not been fulfilled.

You have tried to store a speed below 20 mph (30 km/h), for exam-

ple.

ESP

is deactivated. The yellow ESP

OFF warning lamp is lit.

If conditions permit, drive faster than 20 mph (30 km/h) and store

the speed.

Check the activation conditions for cruise control (Y page 136).

Reactivate ESP

(Y page 162).

184

Display messages

On-board computer and displays

Tires

Display messages

Possible causes/consequences and MM Solutions

PleasePlease CorrectCorrect TireTire

PressurePressure

The tire pressure is too low in at least one of the tires, or the tire

pressure difference between the wheels is too great.

Check the tire pressures at the next opportunity (Y page 263).

If necessary, correct the tire pressure.

Restart the tire pressure monitor (Y page 265).

Check TiresCheck Tires

The tire pressure in one or more tires has dropped significantly. The

wheel position appears in the multifunction display.

A warning tone also sounds.

WARNING

Tire pressures that are too low pose the following hazards:

they may burst, especially as the load and vehicle speed increase

they may wear excessively and/or unevenly, which may greatly

impair tire traction.

the driving characteristics, as well as steering and braking, may be

greatly impaired

There is a risk of an accident.

Stop the vehicle without making any sudden steering or braking

maneuvers. Pay attention to the traffic conditions as you do so.

Secure the vehicle against rolling away (Y page 128).

Check the tires and, if necessary, follow the instructions for a flat

tire (Y page 241).

Check the tire pressure (Y page 263).

If necessary, correct the tire pressure.

Warning Tire Mal‐Warning Tire Mal‐

functionfunction

The tire pressure in one or more tires has dropped suddenly. The wheel

position appears in the multifunction display.

WARNING

Driving with a flat tire poses a risk of the following hazards:

a flat tire affects the ability to steer or brake the vehicle

you could lose control of the vehicle

continued driving with a flat tire will cause excessive heat build-up

and possibly a fire

There is a risk of an accident.

Stop the vehicle without making any sudden steering or braking

maneuvers. Pay attention to the traffic conditions as you do so.

Secure the vehicle against rolling away (Y page 128).

Check the tires and, if necessary, follow the instructions for a flat

tire (Y page 241).

Display messages

185

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

TireTire Press.Press. MonitorMonitor

Currently Unavaila‐Currently Unavaila‐

bleble

Because there is interference from a strong source of radio waves, no

signals from the tire pressure sensors are detected. The tire pressure

monitor is temporarily malfunctioning.

Drive on.

The tire pressure monitor restarts automatically as soon as the

problem has been resolved.

TirePress. Sen‐TirePress. Sen‐

sor(s) Missingsor(s) Missing

There is no signal from the tire pressure sensor of one or several

wheels. The pressure of the affected tire does not appear in the mul-

tifunction display.

Have the faulty tire pressure sensor replaced at a qualified special-

ist workshop.

Tire Pressure Moni‐Tire Pressure Moni‐

tor Inoperative Notor Inoperative No

Wheel SensorsWheel Sensors

The wheels mounted do not have a suitable tire pressure sensor. The

tire pressure monitor is deactivated.

Mount wheels with suitable tire pressure sensors.

The tire pressure monitor is activated automatically after driving for

a few minutes.

TireTire Press.Press. MonitorMonitor

InoperativeInoperative

The tire pressure monitor is faulty.

Visit a qualified specialist workshop.

Vehicle

Display messages

Possible causes/consequences and MM Solutions

Depress Brake toDepress Brake to

Start EngineStart Engine

You have attempted to start the drive system with the transmission in

position N without depressing the brake pedal.

Depress the brake pedal.

ToTo DeselectDeselect PP oror N,N,

Depress Brake andDepress Brake and

Start EngineStart Engine

You have attempted to shift the transmission to position R or D with-

out starting the drive system.

Start the drive system.

Depress the brake pedal.

It is only possible to shift the transmission from position P to the

desired position if you depress the brake pedal. Only then can the

parking lock be deactivated. If you do not depress the brake pedal,

the DIRECT SELECT lever can still be moved but the parking lock

remains engaged.

At transmission fluid temperatures below Ò4 ‡ (Ò20 †) you can

only shift out of position P into another transmission position when

the engine is running.

Apply Brake toApply Brake to

Shift from 'P'

You have attempted to shift the transmission to position R, N or D

without depressing the brake pedal.

Depress the brake pedal.

186

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

TransmissionTransmission NotNot inin

P Risk of VehicleP Risk of Vehicle

Rolling AwayRolling Away

The driver's door is open or not fully closed and the transmission is in

position R, N or D.

A warning tone also sounds.

WARNING

The vehicle may roll away.

There is a risk of an accident.

Shift the transmission to position P.

Secure the vehicle against rolling away (Y page 128).

Close the driver's door completely.

ServiceService RequiredRequired DoDo

Not Shift GearsNot Shift Gears

Visit DealerVisit Dealer

You cannot change the transmission position due to a malfunction.

A warning tone also sounds.

If transmission position D is selected:

Drive to a qualified specialist workshop without shifting the trans-

mission from position D.

If transmission position R, N or P is selected:

Secure the vehicle against rolling away (Y page 128).

Notify a qualified specialist workshop or breakdown service.

Do not tow the vehicle.

Only Shift to 'P'Only Shift to 'P'

whenwhen VehicleVehicle isis Sta‐Sta‐

tionarytionary

The vehicle is moving.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Shift the transmission to position P.

The tailgate is open.

Close the tailgate.

The hood is open.

A warning tone also sounds.

WARNING

The open hood may block your view when the vehicle is in motion.

There is a risk of an accident.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Close the hood.

At least one door is open. A warning tone also sounds.

Close all the doors.

Display messages

187

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Power Steering Mal‐Power Steering Mal‐

function See Opera‐function See Opera‐

tor's Manualtor's Manual

The power steering is malfunctioning.

A warning tone also sounds.

WARNING

You will need to use more force to steer.

There is a risk of an accident.

Check whether you are able to apply the extra force required.

If you are able to steer safely:

Drive on carefully.

Visit a qualified specialist workshop immediately.

If you are unable to steer safely:

Do not drive on.

Consult a qualified specialist workshop.

Phone No ServicePhone No Service

Your vehicle is outside the network provider's transmitter/receiver

range.

Wait until the mobile phone operational readiness symbol appears

in the multifunction display.

Check Washer FluidCheck Washer Fluid

The washer fluid level in the washer fluid reservoir has dropped below

the minimum.

Add washer fluid (Y page 232).

Wiper Malfunction‐Wiper Malfunction‐

inging

The windshield wipers are malfunctioning.

Visit a qualified specialist workshop.

Hazard WarningHazard Warning

Flashers Malfunc‐Flashers Malfunc‐

tioningtioning

The hazard warning lamps are faulty.

Visit a qualified specialist workshop.

Charger Cable Con‐Charger Cable Con‐

nectednected

The charging cable is still connected to the vehicle socket.

Remove the charging cable from vehicle socket.

188

Display messages

On-board computer and displays

SmartKey

Display messages

Possible causes/consequences and MM Solutions

KeyKey DoesDoes NotNot BelongBelong

to Vehicleto Vehicle

You have put the wrong SmartKey in the ignition lock.

Use the correct SmartKey.

Take Your Key fromTake Your Key from

IgnitionIgnition

The SmartKey is in the ignition lock.

A warning tone sounds

Remove the SmartKey.

Obtain a New KeyObtain a New Key

The SmartKey needs to be replaced.

Visit a qualified specialist workshop.

Replace Key BatteryReplace Key Battery

The SmartKey battery is discharged.

Change the battery (Y page 69).

Don't Forget YourDon't Forget Your

KeyKey

The display message is shown for a maximum of 60 seconds and is

only a reminder.

You open the driver's door with the drive system switched off. The

SmartKey is not in the ignition lock. A warning tone sounds.

Take the SmartKey with you when you leave the vehicle.

Key Not DetectedKey Not Detected

(red display message)

The SmartKey is not in the vehicle.

A warning tone also sounds.

If the drive system is switched off, you can no longer lock the vehicle

centrally or start the drive system.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Locate the SmartKey.

There is interference from a strong source of radio waves, and as a

result the SmartKey is not detected while the drive system is running.

A warning tone also sounds.

Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 128).

Insert the SmartKey into the ignition lock and drive in SmartKey

mode.

Display messages

189

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Key Not DetectedKey Not Detected

(white display message)

The SmartKey is currently undetected.

Change the location of the SmartKey in the vehicle.

If the SmartKey still cannot be detected:

Operate the vehicle with the SmartKey in the ignition lock.

Remove 'Start' But‐Remove 'Start' But‐

ton and Insert Keyton and Insert Key

The SmartKey is continually undetected.

The SmartKey detection function has a temporary malfunction or is

faulty. A warning tone also sounds.

Insert the SmartKey into the ignition lock and turn it to the desired

position.

Visit a qualified specialist workshop.

Warning and indicator lamps in the instrument cluster

General notes

Some systems carry out a self-diagnosis when the ignition is switched on. Therefore, some indicator

and warning lamps may light up or flash temporarily. This behavior is non-critical.

These warning and indicator lamps only indicate a malfunction if they light up or flash after the drive

system is started or during a journey.

Safety

Seat belts

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and MM Solutions

N After starting the drive system, the red seat belt warning lamp lights up for

6 seconds.

The seat belt warning lamp reminds the driver and front passenger to fasten their

seat belts.

Fasten your seat belt (Y page 42).

N After starting the drive system, the red seat belt warning lamp lights up. In

addition, a warning tone sounds for up to 6 seconds.

The driver's seat belt is not fastened.

Fasten your seat belt (Y page 42).

The warning tone ceases.

190

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The red seat belt warning lamp lights up after the drive system starts, as soon

as the driver's or the front-passenger door is closed.

The driver or front passenger has not fastened their seat belt.

Fasten your seat belt (Y page 42).

The warning lamp goes out.

There are objects on the front-passenger seat.

Remove the objects from the front-passenger seat and stow them in a secure

place.

The warning lamp goes out.

N The red seat belt warning lamp flashes and an intermittent audible warning

sounds.

The driver or front passenger has not fastened their seat belt. The vehicle is being

driven faster than 15 mph (25 km/h) or has briefly been driven faster than 15 mph

(25 km/h).

Fasten your seat belt (Y page 42).

The warning lamp goes out and the intermittent warning tone ceases.

There are objects on the front-passenger seat. The vehicle is being driven faster

than 15 mph (25 km/h) or has briefly been driven faster than 15 mph (25 km/h).

Remove the objects from the front-passenger seat and stow them in a secure

place.

The warning lamp goes out and the intermittent warning tone ceases.

Warning and indicator lamps in the instrument cluster

191

On-board computer and displays

Safety systems

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

éJ

N The yellow brake system warning lamp is lit while the drive system is running.

é (USA only) J(Canada only): the yellow RBS/brake system warning lamp

is lit while the drive system is running.

The brake system is malfunctioning.

WARNING

The braking characteristics may be affected.

There is a risk of an accident.

Drive on taking extra care.

Visit a qualified specialist workshop immediately.

éJ

N é (USA only), J (Canada only): the yellow RBS/brake system warning

lamp is lit while the drive system is running.

RBS (Recuperative Brake System) is unavailable due to a malfunction.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the function listed

above.

The braking effect may be impaired.

Drive on taking extra care.

Visit a qualified specialist workshop immediately.

N $ (USA only), J (Canada only): the red brake system warning lamp is lit

while the drive system is running. A warning tone also sounds.

WARNING

The brake boosting effect is malfunctioning and the braking characteristics may be

affected.

There is a risk of an accident.

Pull over and stop the vehicle safely as soon as possible, paying attention to road

and traffic conditions. Do not continue driving under any circumstances.

Secure the vehicle against rolling away (Y page 128).

Consult a qualified specialist workshop.

Observe the additional display messages in the multifunction display.

192

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N $ (USA only), J (Canada only): the red brake system warning lamp is lit

while the drive system is running. A warning tone also sounds.

There is not enough brake fluid in the brake fluid reservoir.

WARNING

The braking effect may be impaired.

There is a risk of an accident.

Pull over and stop the vehicle safely as soon as possible, paying attention to road

and traffic conditions. Do not continue driving under any circumstances.

Secure the vehicle against rolling away (Y page 128).

Do not add brake fluid. Adding more will not correct the malfunction.

Consult a qualified specialist workshop.

Observe the additional display messages in the multifunction display.

÷å

éJ

N é (USA only), J (Canada only): the yellow ABS, ESP

, ESP

OFF and

RBS/brake system warning lamps are lit while the drive system is running.

ABS (Anti-lock Braking System) is deactivated due to a malfunction. BAS (Brake

Assist), Active Brake Assist, ESP

(Electronic Stability Program), RBS, the HOLD

function and hill start assist are also deactivated, for example.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above. The wheels could therefore lock if you brake hard, for example.

The steerability and braking characteristics may be severely affected. The braking

distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

If the ABS control unit is malfunctioning, other systems may also not be available,

e.g. the navigation system.

Warning and indicator lamps in the instrument cluster

193

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

éJ

N é (USA only), J (Canada only): the yellow ABS, ESP

, ESP

OFF and

RBS/brake system warning lamps are lit while the drive system is running.

ABS is temporarily unavailable. BAS, Active Brake Assist, ESP

, EBD (Electronic

Brake-force Distribution), the HOLD function and hill start assist are also deacti-

vated, for example.

Possible causes are:

Self-diagnosis is not yet complete.

The on-board voltage may be insufficient.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above. The front and rear wheels could therefore lock if you brake hard, for exam-

ple.

The steerability and braking characteristics may be severely affected. The braking

distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is a risk of an accident.

Carefully drive a suitable distance, making slight steering movements at a speed

above 12 mph (20 km/h).

The functions mentioned above are available again when the warning lamp goes

out.

If the warning lamp is still on:

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

194

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

éJ

N é (USA only), J (Canada only): the yellow ABS, ESP

, ESP

OFF and

RBS/brake system warning lamps are lit while the drive system is running.

EBD is malfunctioning. Therefore, ABS, BAS, Active Brake Assist, ESP

, RBS, the

HOLD function and hill start assist, for example, are also unavailable.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above. The front and rear wheels could therefore lock if you brake hard, for exam-

ple.

The steerability and braking characteristics may be severely affected. The braking

distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

÷å

N $ (USA only), J (Canada only): the red brake system warning lamp and

the yellow ABS, ESP

and ESP

OFF warning lamps are lit while the drive system

is running.

ABS and ESP

are malfunctioning. BAS, RBS, Active Brake Assist, EBD, the HOLD

function and hill start assist, for example, are also unavailable.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above. The front and rear wheels could therefore lock if you brake hard, for exam-

ple.

The steerability and braking characteristics may be severely affected. The braking

distance in an emergency braking situation can increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

Warning and indicator lamps in the instrument cluster

195

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The yellow ESP

warning lamp flashes while the vehicle is in motion.

ESP

or traction control has intervened because there is a risk of skidding or at

least one wheel has started to spin.

Cruise control is deactivated.

When pulling away, only depress the accelerator pedal as far as necessary.

Ease off the accelerator pedal while the vehicle is in motion.

Adapt your driving style to suit the road and weather conditions.

Do not deactivate ESP

In rare cases (Y page 63) , it may be best to deactivate ESP

Observe the important safety notes on ESP

(Y page 62).

N The yellow ESP

OFF warning lamp is lit while the drive system is running.

ESP

is deactivated. ESP

will not stabilize the vehicle if it starts to skid or if a

wheel starts to spin.

WARNING

If ESP

is switched off, ESP

is unable to stabilize the vehicle.

Further driving systems or driving safety systems are thus restricted.

There is an increased risk of skidding and an accident.

Reactivate ESP

In rare cases (Y page 63) , it may be best to deactivate ESP

Observe the important safety notes on ESP

(Y page 62).

Adapt your driving style to suit the road and weather conditions.

If ESP

cannot be activated:

Drive on carefully.

Contact a qualified specialist workshop and have ESP

checked.

196

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

éJ

N é (USA only), J (Canada only): the yellow ESP

, ESP

OFF and RBS/

brake system warning lamps are lit while the drive system is running.

ESP

, RBS, BAS, Active Brake Assist, the HOLD function and hill start assist are

unavailable due to a malfunction.

ATTENTION ASSIST is deactivated.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above.

The braking distance in an emergency braking situation can thus increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

Warning and indicator lamps in the instrument cluster

197

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

éJ

N é (USA only), J (Canada only): the yellow ESP

, ESP

OFF and RBS/

brake system warning lamps are lit while the drive system is running.

ESP

, BAS, the HOLD function and hill start assist are temporarily unavailable.

Adaptive Brake Assist may also have failed.

ATTENTION ASSIST is deactivated.

Self-diagnosis is not yet complete.

WARNING

The braking performance of the electric motor using recuperative braking may be

either reduced or not effective. If you do not make an additional effort to apply the

brake yourself, the braking effect may not be sufficient. If necessary, counteract

the reduced regenerative braking effect by applying the brake yourself.

The brake system continues to function normally, but without the functions listed

above.

The braking distance in an emergency braking situation can thus increase.

If ESP

is not operational, ESP

is unable to stabilize the vehicle.

There is an increased risk of skidding and an accident.

Carefully drive a suitable distance, making slight steering movements at a speed

above 12 mph (20 km/h).

The functions mentioned above are available again when the warning lamp goes

out.

If the warning lamp is still on:

Observe the additional display messages in the multifunction display.

Drive on carefully.

Visit a qualified specialist workshop immediately.

N F (USA only), ! (Canada only): the red indicator lamp for the electric

parking brake flashes or lights up and/or the yellow warning lamp for the electric

parking brake lights up.

Observe the additional display messages in the multifunction display.

N The red restraint system warning lamp is lit while the drive system is running.

The restraint system is malfunctioning.

WARNING

The air bags or Emergency Tensioning Devices may either be triggered uninten-

tionally or, in the event of an accident, may not be triggered.

There is an increased risk of injury.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Contact a qualified specialist workshop and have the restraint system checked.

For further information about the restraint system, see (Y page 38).

198

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Drive system

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The yellow battery charge warning lamp is on.

The condition of charge of the high-voltage battery has dropped into the reserve

range.

Charge the high-voltage battery.

Driving systems

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and MM Solutions

N The red distance warning lamp lights up while the vehicle is in motion. A warning

tone also sounds.

You are approaching a vehicle or a stationary obstacle in your line of travel at too

high a speed.

Be prepared to brake immediately.

Pay careful attention to the traffic situation. You may have to brake or take

evasive action.

Further information on the distance warning function of Active Brake Assist

(Y page 60).

Warning and indicator lamps in the instrument cluster

199

On-board computer and displays

Tires

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.

The tire pressure monitor has detected a loss of pressure in at least one of the tires.

WARNING

Tire pressures that are too low pose the following hazards:

they may burst, especially as the load and vehicle speed increase

they may wear excessively and/or unevenly, which may greatly impair tire trac-

tion.

the driving characteristics, as well as steering and braking, may be greatly

impaired

There is a risk of an accident.

Stop the vehicle without making any sudden steering or braking maneuvers. Pay

attention to the traffic conditions as you do so.

Secure the vehicle against rolling away (Y page 128).

Observe the additional display messages in the multifunction display.

Check the tires and, if necessary, follow the instructions for a flat tire

(Y page 241).

Check the tire pressure (Y page 263).

If necessary, correct the tire pressure.

N The yellow tire pressure monitor warning lamp (pressure loss/malfunction)

flashes for approximately one minute and then remains lit.

The tire pressure monitor is faulty.

WARNING

The system is possibly unable to recognize or register low tire pressure.

There is a risk of an accident.

Observe the additional display messages in the multifunction display.

Visit a qualified specialist workshop immediately.

200

Warning and indicator lamps in the instrument cluster

On-board computer and displays

On-board computer and displays for Your Mercedes B Class SUV Second Generation (2011-2017)

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