Get On-board computer and displays Guide for Mercedes CLA 4 Door First Generation (2013-2018)

Important safety notes

WARNING

Operating the integrated information systems

and communications equipment in the vehicle

while driving will distract you from traffic con-

ditions. You could then lose control of the

vehicle. There is a risk of an accident.

Only operate these devices if road traffic con-

ditions permit. If you are unsure about the

surrounding conditions, pull over to a safe

location and make entries only while the vehi-

cle 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 recognise function

restrictions 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, park the vehicle safely as soon as pos-

sible. 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

anti-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.

Speedometer with segments

The speedometer is divided into segments on

vehicles with Distance Pilot DISTRONIC.

The segments in the speedometer indicate

which speed range is available.

Variable speed limiter is activated

(Y page 165):

The segments light up from the start of the

scale to the selected speed limitation.

Distance Pilot DISTRONIC is activated

(Y page 167):

One or two segments in the stored speed

range light up.

Distance Pilot DISTRONIC detects a vehicle in

front moving more slowly than the stored

speed:

The segments between the speed of the vehi-

cle in front and the stored speed light up.

Rev counter

Do not drive in the overrevving range. Doing

so will damage the engine.

The red band in the rev counter indicates the

engine's overrevving range.

The engine is limited within a range to protect

the engine when the red band is reached.

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 measured air temperature

and not the road surface temperature.

The outside temperature display is in the multi-

function display (Y page 202).

200

Displays and operation

On-board computer and displays

There is a short delay before a change in outside

temperature appears in the multifunction dis-

play.

Coolant temperature gauge

WARNING

If you open the bonnet while the engine is

overheating or while there is a fire in the

engine compartment, you could come into

contact with hot gases or other leaking ser-

vice products. There is a danger of injury.

Allow an overheating engine to cool down

before opening the bonnet. If there is a fire in

the engine compartment, leave the bonnet

closed and notify the fire brigade.

The coolant temperature gauge is in the instru-

ment cluster on the right-hand side (Y page 32).

Under normal operating conditions and with the

correct coolant level, the coolant temperature

may rise to 120 †.

At high outside temperatures and when driving

in mountainous terrain, the coolant temperature

may rise to the end of the scale.

Operating the on-board computer

Overview

Multifunction display

;

Right control panel

Left control panel

To activate the on-board computer: turn

the key 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.

Left control panel

;

Calls up the menu and menu bar

Press briefly:

Scrolls through 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

Displays and operation

201

On-board computer and displays

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 dialling the selected

number

Press briefly:

Back

Vehicles with Audio 20: switches

off voice-operated control of the

navigation (see manufacturer's

operating instructions)

Vehicles with COMAND Online:

switches off LINGUATRONIC (see

the separate operating instruc-

tions)

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

Right control panel

Vehicles with Audio 20:

Switches on voice-operated con-

trol for navigation (see manufac-

turer's operating instructions)

Vehicles with COMAND Online:

Switches off LINGUATRONIC (see

the separate operating instruc-

tions)

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

Multifunction display

Permanent display: outside temperature or

speed (Y page 210)

;

Time

Text field

Menu bar

Drive program (Y page 144)

Transmission position (Y page 146)

Vehicles with manual transmission: the indica-

tors in the lower part of the multifunction display

differ from those shown here.

For Mercedes-AMG vehicles, the indicators in

the lower and upper part of the multifunction

display differ from those shown here.

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.

202

Displays and operation

On-board computer and displays

The following messages may appear in the

multifunction display:

Z Gearshift recommendation for manual

transmission (Y page 143) or for automatic

transmission (shifting manually)

(Y page 150)

j Parking Pilot (Y page 180)

¯ Cruise control (Y page 162)

È Limiter (Y page 165)

_ Adaptive Highbeam Assist

(Y page 109)

è ECO start/stop function (Y page 137)

ë HOLD function (Y page 172)

120 km/h!120 km/h! Maximum permissible speed

exceeded (only for certain countries)

Menus and submenus

Menu overview

Using the = or ; button on the steering

wheel, open the menu bar.

Operating the on-board computer (Y page 201).

Depending on the equipment fitted in the vehi-

cle, you can call up the following menus:

TripTrip menu (Y page 203)

NaviNavi menu (navigation instructions)

(Y page 205)

AudioAudio menu (Y page 206)

TelTel menu (telephone) (Y page 207)

Assist.Assist. menu (assistance) (Y page 208)

Serv.Serv. menu (Y page 210)

SettingsSettings menu (settings) (Y page 210)

AMGAMG menu (Mercedes-AMG vehicles)

(Y page 213)

The displays for the AudioAudio, NaviNavi and TelTel menus

may differ slightly to those in your vehicle.

The examples given in this Owner's Manual

apply to vehicles equipped with COMAND

Online.

Trip menu

Standard display

Press and hold the % button on the steer-

ing wheel until the

TripTrip menu with trip

meter : and total distance recorder ;

appears.

Trip computer "From start" or "From

reset"

Distance

;

Driving time

Average speed

Average fuel 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 204).

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 kilometres have been exceeded.

When 9,999 hours or 99,999 kilometres have

been exceeded, the trip computer is automati-

cally reset

From resetFrom reset.

Menus and submenus

203

On-board computer and displays

ECO display

The ECO display is not available in Mercedes-

AMG vehicles.

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.

Further information on the ECO display

(Y page 159).

Displaying the range and current fuel

consumption

Mercedes-AMG vehicles: the menu only dis-

plays range :.

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 con-

sumption ;.

Approximate range : that can be covered is

calculated according to your current driving

style and the amount of fuel in the tank. If

there is only a small amount of fuel left in the

fuel tank, a vehicle being refuelled C

appears instead of approximate range :.

Recuperation display = shows you if energy

has been recuperated from the kinetic energy

in overrun mode and saved in the battery.

Recuperation display = depends on the

engine installed and is therefore not available

in all vehicles.

Digital speedometer

Press the = or ; button on the steering

wheel to select the

TripTrip menu.

Press the 9 or : button to select dig-

ital speedometer ;.

Gearshift recommendation : Z may also be

displayed.

Observe the information on gearshift recom-

mendation : for manual transmission

(Y page 143) or for automatic transmission

(shifting manually) (Y page 150).

Mercedes-AMG vehicles: a gearshift recom-

mendation is shown in the status bar of the

multifunction display and not in the digital

speedometer display.

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 meter

"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.

204

Menus and submenus

On-board computer and displays

Navigation menu

Displaying navigation instructions

In the NaviNavi menu, the multifunction display

shows the 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

Route guidance active

No change of direction announced

Distance to the destination

;

Distance to the next change of direction

Current road

Symbol indicating "follow the road's course"

Change of direction without lane recom-

mendation

Road to 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 ;. This 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 dis-

play reaches zero.

Change of direction announced with a

lane recommendation

Road to 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 multi-lane roads, new lane recommenda-

tions can be displayed for the next change of

direction if the digital map supports this data.

During the change of direction, new lanes may

be added.

Lane not recommended =: you will not be able

to complete the next change of direction if you

stay in this lane.

Recommended lane and new lane during a

change of direction ?: in this lane you will be

able to complete the next two changes of direc-

tion without changing lane.

Menus and submenus

205

On-board computer and displays

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 route...Calculating 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 recognised, e.g.

new roads, car parks or private land.

No routeNo route

No route could be calculated to the selected

destination.

You have reached the destination or a stop-

over.

Audio menu

Selecting a radio station

Active station list

;

Station with preset position

The multifunction display shows station ; with

station frequency or station name. The preset

position is only displayed in addition if station ;

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 :.

DAB radio mode (Digital Audio Broadcast-

ing) is an optimised digital transmission

standard designed for the mobile reception of

radio transmissions.

Audio player or audio media operation

Current track

Audio files from various audio players or media

can be played, depending on the equipment fit-

ted in the vehicle.

Switch on the multimedia system and activate

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 the desired track appears.

If you press and hold the 9 or : button,

the rapid scrolling speed is increased. Not all

audio players or media support this function.

If track information is saved on the audio player

or media, the multifunction display will show the

number and title of the track.

DVD-Video operation

206

Menus and submenus

On-board computer and displays

Only for vehicles with COMAND Online: you can

use the

AudioAudio menu to play video DVDs.

Switch on COMAND Online and select video

DVD (see the separate operating instruc-

tions).

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

Operating the integrated information systems

and communications equipment in the vehicle

while driving will distract you from traffic con-

ditions. You could then lose control of the

vehicle. There is a risk of an accident.

Only operate these devices if road traffic con-

ditions permit. If you are unsure about the

surrounding conditions, pull over to a safe

location and make entries only while the vehi-

cle 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.

Insert the mobile phone into the mobile phone

bracket (Y page 277).

Establish a Bluetooth

connection to the mul-

timedia system; see the separate 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.

i You can obtain further information about

suitable mobile phones and connecting

mobile phones via Bluetooth

at any Mercedes-Benz Service Centre

on the Internet at

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 reject or end a call any time even if you

are not in the

TelTel menu.

Press the ~ button on the steering wheel

to reject or end an incoming 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.

Authorise 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.

Menus and submenus

207

On-board computer and displays

If only one telephone number is stored for

a name: press the 6 or a button to

start dialling.

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 dial-

ling.

If you do not want to make the call: press

the ~ or % button.

Redialling

The on-board computer saves the last names or

numbers dialled 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 dial-

ling.

If you do not want to make the call: press

the ~ or % button.

Assistance menu

Introduction

Depending on the equipment fitted in the vehi-

cle, you have the following options in the

Assist.Assist. menu:

Showing the assistance graphic

(Y page 208)

Activating/deactivating the Traffic Sign

Assist message function (Y page 208)

Deactivating/activating ESP

(except

Mercedes‑AMG vehicles) (Y page 209)

Activating/deactivating Active Brake Assist

(Y page 209)

Activating/deactivating ATTENTION ASSIST

(Y page 209)

Activating/deactivating Blind Spot Assist

(Y page 209)

Activating/deactivating Lane Keeping Assist

(Y page 209)

Showing the assistance graphic

Press the = or ; button on the steering

wheel to select the

Assist.Assist. menu.

Press 9 or : to select

Assist.Assist.

graphic

graphic.

Press a to confirm.

The multifunction display shows the distance

display of Distance Pilot DISTRONIC in the

assistance graphic.

The assistance graphic shows you the status

of and/or information from the following driv-

ing systems or driving safety systems:

Traffic Sign Assist (Y page 190)

Distance Pilot DISTRONIC (Y page 167)

Active Brake Assist (Y page 67)

ATTENTION ASSIST (Y page 189)

Lane Keeping Assist (Y page 193)

Press : to display the ATTENTION ASSIST

assessment.

Traffic Sign Assist

In the Traffic Sign AssistTraffic Sign Assist menu, you can

switch the Traffic Sign Assist message function

on or off. When the message function is activa-

ted, detected traffic signs and information

appear in the multifunction display for five sec-

onds.

Press the = or ; button on the steering

wheel to select the

Assist.Assist. menu.

Press the 9 or : button to select

Traffic Sign AssistTraffic Sign Assist.

Press a to confirm.

The current selection appears.

To activate/deactivate the message func-

tion: press a again.

208

Menus and submenus

On-board computer and displays

Further information about Traffic Sign Assist

(Y page 190).

Activating/deactivating ESP

Observe the important safety notes on ESP

(Y page 70).

WARNING

If you deactivate ESP

, ESP

no longer sta-

bilises 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

Deactivating/activating ESP

on Mercedes-

AMG vehicles (Y page 71).

For further information about ESP

, see

(Y page 69).

Start the engine.

Press the = or ; button on the steering

wheel to select the

Assist.Assist. menu.

Press 9 or : to select

ESPESP.

Press a to confirm.

The current selection appears.

To activate/deactivate: press a again.

ESP

is deactivated if the å warning lamp

in the instrument cluster lights up continu-

ously when the engine 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 252).

Observe the information on display messages

(Y page 217).

Activating/deactivating Active Brake

Assist

Press the = or ; button on the steering

wheel to select the

Assist.Assist. menu.

Press the 9 or : button to select

Brake AssistBrake Assist.

Press a to confirm.

The current selection appears.

To activate/deactivate: press a 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 67).

Activating/deactivating ATTENTION

ASSIST

Press the = or ; button on the steering

wheel to select the

Assist.Assist. 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 graphic display.

For further information about ATTENTION

ASSIST, see (Y page 189).

Activating/deactivating Blind Spot

Assist

Press the = or ; button on the steering

wheel to select the

Assist.Assist. 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 a again.

Further information about Blind Spot Assist

(Y page 192).

Activating/deactivating Lane Keeping

Assist

Press the = or ; button on the steering

wheel to select the

Assist.Assist. menu.

Press the 9 or : button to select

Lane Keeping AssistLane Keeping Assist.

Press a to confirm.

The current selection appears.

Press a again to confirm.

Menus and submenus

209

On-board computer and displays

Press the : or 9 button to set

OffOff,

StandardStandard or AdaptiveAdaptive.

Press the a button to save the setting.

When Lane Keeping Assist is activated, the

multifunction display shows the lane mark-

ings as bright lines in the assistance graphic.

For further information about Lane Keeping

Assist, see (Y page 193).

Service menu

Depending on the equipment fitted in the vehi-

cle, you have the following options in the

Serv.Serv.

menu:

Calling up display messages in the message

memory (Y page 216)

Restarting the tyre pressure loss warning sys-

tem (Y page 315)

Calling up the service due date

(Y page 285)

Settings menu

Introduction

Depending on the equipment fitted in the vehi-

cle, in the

SettingsSettings menu you have the follow-

ing options:

Changing the instrument cluster settings

Changing the light settings

Changing the vehicle settings

Changing the heating settings

Changing the convenience settings

Restoring the factory settings

Instrument cluster

Selecting the unit of measurement for dis-

tance

The

Display unit Speed-/odometer:Display unit Speed-/odometer: func-

tion allows you to choose whether certain dis-

plays appear in kilometres or miles in the mul-

tifunction display.

Press the = or ; button on the steering

wheel to select the

SettingsSettings 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 the following:

digital speedometer in the

TripTrip menu

total distance recorder and the trip meter

trip computer

current fuel consumption and approximate

range

navigation instructions in the

NaviNavi menu

cruise control

speed limiter

Distance Pilot DISTRONIC

ASSYST PLUS service interval display

Switching the additional speedometer

on/off

United Kingdom: this function is unavailable.

If the additional speedometer is switched on,

the speed is shown in the status bar of the mul-

tifunction display instead of the outside tem-

perature.

The speed display is inverse to your speedome-

ter.

Press the = or ; button on the steering

wheel to select the

SettingsSettings 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

Dig. speedo [mph]Dig. speedo [mph] function.

You will see the selected setting:

onon or offoff.

Press the a button to save the setting.

Selecting permanent display

United Kingdom: this function is unavailable.

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 your speedome-

ter.

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

Instrument clusterInstrument cluster submenu.

Press a to confirm.

210

Menus and submenus

On-board computer and displays

Press the : or 9 button to select the

Permanent display:Permanent display: function.

The current setting,

outside temperatureoutside temperature

or Dig. speedo [mph]:Dig. speedo [mph]:, appears.

Press the a button to save the setting.

Lights

Switching the daytime driving lights

on/off

The

Daytime driving lightsDaytime driving lights function can

only be switched on with the engine turned off.

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

LightsLights submenu.

Press a to confirm.

Press the : or 9 button to select the

Daytime driving lightsDaytime driving lights function.

If the

DaytimeDaytime drivingdriving lightslights function has

been switched on, the cone of light and the

W symbol in the multifunction display are

shown in orange.

Press the a button to save the setting.

Further information on daytime driving lights

(Y page 107).

Vehicle

Setting permanent SPEEDTRONIC

You can set the permanent limiter using the

Limit speed (winter tyres):Limit speed (winter tyres): function.

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

VehicleVehicle submenu.

Press a to confirm.

Press : or 9 to select the

LimitLimit

speed (winter tyres):

speed (winter tyres): function.

You will see the current setting.

Press a to confirm.

Press the : or 9 button to adjust the

permanent speed limiter in increments of ten

(

160 km/h160 km/h to 240 km/h240 km/h). The OffOff setting

switches the permanent speed limiter off.

Press the a button to store the entry.

Further information on the permanent speed

limiter (Y page 166).

Activating/deactivating the automatic

locking feature

Press the = or ; button on the steering

wheel to select the

SettingsSettings 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 locksAutomatic door locks function.

If the

Automatic door locksAutomatic door locks 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 15 km/h.

For further information on the automatic locking

feature; see (Y page 85).

Activating/deactivating the acoustic

locking confirmation

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

SettingsSettings 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 & symbol in the multifunction display

lights up orange.

Press the a button to save the setting.

Heating

Auxiliary heating departure time

DANGER

If the exhaust pipe is blocked or sufficient

ventilation is not possible, toxic exhaust

fumes can enter the vehicle, especially car-

bon monoxide. This is the case, e.g. in

enclosed spaces, or if the vehicle is stuck in

snow. There is a risk of fatal injuries.

You should switch off the auxiliary heating in

enclosed spaces which do not have an extrac-

Menus and submenus

211

On-board computer and displays

tion system, e.g. a garage. If the vehicle is

stuck in snow and you must leave the auxiliary

heating running, keep the exhaust pipe and

the area around the vehicle clear of snow. To

guarantee a sufficient supply of fresh air, open

a window on the side of the vehicle away from

the wind.

WARNING

When the auxiliary heating is switched on,

parts of the vehicle can become very hot.

Flammable materials such as leaves, grass or

twigs may ignite if they come into contact

with:

hot parts of the exhaust system

the exhaust gas itself

There is a risk of fire.

When the auxiliary heating is switched on,

make sure that:

no flammable materials come into contact

with hot vehicle components

the exhaust gas can escape from the

exhaust pipe unhindered

the exhaust gas does not come into contact

with flammable materials.

Operating the auxiliary heating/ventilation

draws on the vehicle battery. After you have

heated or ventilated the vehicle a maximum of

two times, drive for a longer distance.

Only vehicles with auxiliary heating have this

function.

In the

HeatingHeating submenu, you can select a

stored departure time or change a departure

time.

The auxiliary heating timer function calculates

the switch-on time according to the outside

temperature so that the vehicle is preheated by

the departure time. When the departure time is

reached, the auxiliary heating continues to heat

for a further five minutes and then switches off.

The auxiliary heating adopts the set air condi-

tioning or THERMOTRONIC temperature set-

ting.

You can switch off the auxiliary heating by using

the remote control or the auxiliary heating but-

ton on the centre console.

Switch the auxiliary heating on regularly

once a month for about ten minutes.

Further information on auxiliary heating

(Y page 126).

Selecting the departure time or deactivat-

ing a selected departure time

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

HeatingHeating submenu.

Press a to confirm.

The current setting appears.

Press a again.

Press the : or 9 button to select one

of the three departure times or

TimerTimer offoff (no

timer active).

Press a to confirm.

If a departure time is selected, the yellow

indicator lamp lights up on the auxiliary heat-

ing button.

Changing the departure time

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

HeatingHeating submenu.

Press a to confirm.

The current setting appears.

Press the : or 9 button to select

Change AChange A, Change BChange B or Change CChange C.

Press a to confirm.

You can now change the departure time.

Press the = or ; button to select the

display to be changed: hours, minutes.

Press the : or 9 button to set the

selected display.

Press the a button to store the entry.

The yellow indicator lamp on the auxiliary

heating button lights up.

Comfort

Switching belt adjustment on/off

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

ConvenienceConvenience submenu.

Press a to confirm.

212

Menus and submenus

On-board computer and displays

Press the : or 9 button to select the

Belt adjustmentBelt adjustment function.

When the

Belt adjustmentBelt adjustment function is acti-

vated, the seat belt is displayed in orange in

the multifunction display.

Press the a button to save the setting.

For further information on belt adjustment, see

(Y page 43).

Switching the fold mirrors in when lock-

ing function on/off

This function is only available when the vehicle is

equipped with the electrical fold-in function.

When you activate the

Auto. fold-in mir‐Auto. fold-in mir‐

rors

rors function, the exterior mirrors are folded in

when the vehicle is locked. When you unlock the

vehicle and then open the driver's or front-

passenger door, the exterior mirrors fold out

again.

If you have switched on the Auto. fold-inAuto. fold-in

mirrors

mirrors function and you fold in the exterior

mirrors using the button on the door

(Y page 104), they will not fold out automati-

cally. The exterior mirrors can then only be fol-

ded out using the button on the door.

Press the = or ; button on the steering

wheel to select the

SettingsSettings menu.

Press the : or 9 button to select the

ConvenienceConvenience submenu.

Press a to confirm.

Press the : or 9 button to select the

Auto. fold-in mirrorsAuto. fold-in mirrors function.

If the

Auto. fold-in mirrorsAuto. fold-in mirrors function is

switched on, the multifunction display shows

the exterior mirror in orange.

Press the a button to save the setting.

Resetting to factory settings

Press the = or ; button on the steering

wheel to select the

SettingsSettings 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:

the

LimitLimit speedspeed (winter(winter tyres)tyres) function of

the permanent speed limiter can only be set in

the

VehicleVehicle submenu.

AMG menu (Mercedes-AMG vehicles)

Warm-up

Digital speedometer

;

Gear indicator

Upshift indicator

Engine oil temperature

Coolant temperature

Transmission oil temperature

Press the = or ; button on the steering

wheel to select the

AMGAMG menu.

Upshift indicator: upshift indicator

UPUP =

indicates that the engine has reached the

overrevving range when in the manual drive

program.

Engine and transmission oil temperature:

when the engine and transmission are at nor-

mal operating temperature, oil tempera-

ture ? and B are displayed in white in the

multifunction display.

If the multifunction display shows oil temper-

ature ? or B in blue, the engine or the

transmission are not yet at normal operating

temperature. Avoid using the full output of the

engine during this time.

Menus and submenus

213

On-board computer and displays

SETUP

Drive system

ComfortComfort/SportSport/Sport +Sport +

;

Suspension

ComfortComfort/SportSport/Sport +Sport +

Transmission

DD/MM

ESP

OnOn/OffOff or SPORT handling mode

SportSport

SETUP displays the following information and

functions:

the digital speedometer

the gear indicator

the drive system setting

the suspension mode

the transmission position

the ESP

(Electronic Stability Program) status

Press the = or ; button on the steering

wheel to select the

AMGAMG menu.

Press 9 repeatedly until SETUP appears.

RACE TIMER

Displaying and starting the RACETIMER

Lap

;

RACETIMER

The RACETIMER is only intended for use on a

closed race circuit. Do not use the function on

public roads.

You can start the RACETIMER when the engine is

running or if the key is in position 2 in the ignition

lock.

Press the = or ; button on the steering

wheel to select the

AMGAMG menu.

Press the 9 button repeatedly until the

RACETIMER appears.

To start: press the a button to start the

RACETIMER.

Displaying the intermediate time

Press the = or ; button to select

Interm. TimeInterm. Time.

Press a to confirm.

The intermediate time is shown for five sec-

onds.

Starting a new lap

RACETIMER

;

Fastest lap time (best lap)

Lap

Press a to confirm

New LapNew Lap.

A maximum of 16 laps may be stored. The

16th lap can only be completed with

FinishFinish

Lap

Lap.

Stopping the RACETIMER

214

Menus and submenus

On-board computer and displays

Press the % button on the steering wheel.

Confirm

YesYes with a.

The RACETIMER interrupts timing if you stop the

vehicle and turn the key to position 1 in the igni-

tion lock. If you turn the key to position 3 and

then press a to confirm

StartStart, timing is

continued.

Resetting the current lap

Stop the RACETIMER.

Press the = or ; button to select

Reset LapReset Lap.

Press a to reset the lap time to "0".

Deleting all laps

If you switch off the engine, the RACETIMER is

reset to "0" after 30 seconds. All laps are

deleted.

You cannot delete individual stored laps. If you

have stopped 16 laps, the current lap does not

have to be reset.

Reset the current lap.

Press a to confirm

ResetReset.

Reset Race Timer?Reset Race Timer? appears in the multi-

function display.

Press the : button to select

YesYes and press

the a button to confirm.

All laps are deleted.

Overall evaluation

RACETIMER overall evaluation

;

Total time driven

Average speed

Distance covered

Maximum speed

This function is shown if you have stored at least

one lap and stopped the RACETIMER.

Press = or ; on the steering wheel to

select the

AMGAMG menu.

Press the 9 button repeatedly until the

overall evaluation appears.

Lap evaluation

Lap

;

Lap time

Average lap speed

Lap length

Top speed during lap

This function is only available if you have stored

at least two laps and have stopped the RACE-

TIMER.

Press the = or ; button on the steering

wheel to select the

AMGAMG menu.

Press the 9 button repeatedly until a lap

evaluation appears.

Each lap is shown in a separate submenu. The

fastest lap is indicated by flashing symbol :.

Press the 9 or : button to select a dif-

ferent lap evaluation.

Menus and submenus

215

On-board computer and displays

Display messages

Introduction

General notes

Display messages appear in the multifunction display.

Display messages with graphic symbols are simplified in the Owner's Manual and may differ from

the symbols in the multifunction display.

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

Owner'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, these

display messages are deleted as well.

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

HOLD function (Y page 172)

Parking (Y page 155)

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

ServiceService 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.

216

Display messages

On-board computer and displays

Safety systems

Display messages

Possible causes/consequences and MM Solutions

!÷

currently unavaila‐currently unavaila‐

bleble SeeSee Owner'sOwner's Man‐Man‐

ualual

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

(Electronic Stability Program), ESP

trailer stabilisation, the HOLD

function, hill start assist and PRE-SAFE

are temporarily unavailable.

Adaptive brake lights and Active Brake Assist may have also failed.

In addition, the !, ÷ and å warning lamps may light up in

the instrument cluster.

ATTENTION ASSIST is deactivated.

Possible causes:

Self-diagnosis is not yet complete.

The on-board voltage may be insufficient.

WARNING

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 may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Carefully drive on a suitable stretch of road, making slight steering

movements, at a speed above 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.

Consult a qualified specialist workshop immediately.

!÷

inoperativeinoperative SeeSee Own‐Own‐

er's Manualer's Manual

ABS, BAS, ESP

, ESP

trailer stabilisation, the HOLD function, hill

start assist and PRE-SAFE

are unavailable due to a malfunction.

Adaptive brake lights and Active Brake Assist may have also failed.

The !, ÷, å and J warning lamps may also light up in the

instrument cluster.

ATTENTION ASSIST is deactivated.

WARNING

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 may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Drive on carefully.

Consult a qualified specialist workshop immediately.

Display messages

217

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

currently unavaila‐currently unavaila‐

bleble SeeSee Owner'sOwner's Man‐Man‐

ualual

ESP

, ESP

trailer stabilisation, BAS, the HOLD function, hill start

assist and PRE-SAFE

are temporarily unavailable.

Adaptive brake lights and Active Brake Assist may have also failed.

In addition, the ÷ and å warning lamps may light up in the

instrument cluster.

ATTENTION ASSIST is deactivated.

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

WARNING

The brake system continues to function normally, but without the

functions listed above.

The braking distance may thus increase in an emergency braking sit-

uation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Carefully drive on a suitable stretch of road, making gentle steering

movements at speeds of above 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.

Consult a qualified specialist workshop immediately.

inoperativeinoperative SeeSee Own‐Own‐

er's Manualer's Manual

ESP

, ESP

trailer stabilisation, BAS, the HOLD function, hill start

assist and PRE-SAFE

are unavailable due to a malfunction.

Adaptive brake lights and Active Brake Assist may have also failed.

In addition, the ÷ and å warning lamps may light up in the

instrument cluster.

ATTENTION ASSIST is deactivated.

WARNING

The brake system continues to function normally, but without the

functions listed above.

The braking distance may thus increase in an emergency braking sit-

uation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Drive on carefully.

Consult a qualified specialist workshop immediately.

218

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

inoperativeinoperative SeeSee Own‐Own‐

er's Manualer's Manual

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

, ESP

trailer

stabilisation, the HOLD function, hill start assist and PRE-SAFE

are

unavailable due to a malfunction.

Adaptive brake lights and Active Brake Assist may have also failed.

A warning tone sounds.

In addition, the ÷, å and ! warning lamps may light up in

the instrument cluster.

WARNING

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 may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Drive on carefully.

Consult a qualified specialist workshop immediately.

Turn on the igni‐Turn on the igni‐

tiontion toto releaserelease thethe

parking brakeparking brake

The red ! indicator lamp lights up.

You attempted to release the electric parking brake while the ignition

was switched off.

Key: turn the key to position 1 in the ignition lock.

KEYLESS-GO: switch on the ignition.

Release parkingRelease parking

brakebrake

The red ! indicator lamp flashes and a warning tone sounds. A

condition for automatic release of the electric parking brake is not

fulfilled (Y page 157).

You are driving with the electric parking brake applied.

Release the electric parking brake manually.

The red ! indicator lamp flashes and a warning tone sounds.

You are making an emergency stop using the electric parking brake

(Y page 157).

Parking brake SeeParking brake See

Owner's ManualOwner'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 lever for at least ten seconds.

Vehicles with manual transmission: engage first gear.

Vehicles with automatic transmission: shift the transmission to

position P.

Consult a qualified specialist workshop.

Display messages

219

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

The yellow ! warning lamp and the red ! indicator lamp are lit.

The electric parking brake is malfunctioning.

To release:

Turn the ignition off and then back on.

Release the electric parking brake manually.

Vehicles with manual transmission (automatic emergency

release):insert the seat belt in the belt buckle and accelerate

slightly more when pulling away.

Vehicles with automatic transmission: release the electric park-

ing brake automatically (Y page 157).

If the electric parking brake still cannot be released:

Do not drive on.

Consult a qualified specialist workshop.

The red ! indicator lamp flashes and the yellow ! warning lamp

is lit.

The electric parking brake is malfunctioning.

To release:

Turn the ignition off and then back on.

Release the electric parking brake manually.

To apply:

Turn the ignition off and then back on.

Apply the electric parking brake manually.

If the red ! indicator lamp continues to flash:

Do not drive on.

Secure the vehicle against rolling away (Y page 319).

Vehicles with manual transmission: engage first gear.

Vehicles with automatic transmission: shift the transmission to

position P.

Turn the front wheels towards the kerb.

Consult a qualified specialist workshop.

220

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

The yellow ! warning lamp lights up. The red ! 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.

Turn the ignition off and then back on.

Apply the electric parking brake.

If you cannot apply the electric parking brake:

Vehicles with manual transmission: engage first gear.

Vehicles with automatic transmission: shift the transmission to

position P.

Consult a qualified specialist workshop.

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

Vehicles with manual transmission (automatic emergency

release):insert the seat belt in the belt buckle and accelerate

slightly more when pulling away.

Vehicles with automatic transmission: release the electric park-

ing brake automatically (Y page 157).

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 ! indicator lamp

flashes.

The electric parking brake is malfunctioning. The electric parking

brake cannot be applied manually.

Vehicles with manual transmission: switch off the ignition.

The electric parking brake is applied automatically.

Insert the seat belt in the belt buckle and accelerate slightly more

when pulling away (automatic emergency release).

Vehicles with automatic transmission: shift the transmission to

position P, as the electric parking brake is not applied automati-

cally.

Consult a qualified specialist workshop.

If you do not wish the electric parking brake to be applied, leave the

ignition switched on, e.g. when washing the vehicle in an automatic

car wash or when having the vehicle towed.

Display messages

221

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Parking brake inop‐Parking brake inop‐

erativeerative

The yellow ! warning lamp lights up. The red ! 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 engine.

Apply or release the electric parking brake.

If the electric parking brake still cannot be applied or released:

Turn the ignition off and then back on.

Apply 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:

Consult a qualified specialist workshop.

The red ! indicator lamp flashes and the yellow ! warning lamp

is lit.

The electric parking brake cannot be applied manually.

Vehicles with manual transmission: engage first gear.

Vehicles with automatic transmission: shift the transmission to

position P.

Consult a qualified specialist workshop.

Brake immediatelyBrake immediately

Vehicles with manual transmission: a malfunction has occurred while

the HOLD function was activated.

A tone may also sound at regular intervals. If you attempt to lock the

vehicle, the tone becomes louder.

You cannot start the engine.

Paying attention to the traffic situation, immediately depress the

brake pedal firmly and hold until the display message disappears.

Secure the vehicle against rolling away (Y page 155).

You can restart the engine.

222

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Check brake fluidCheck brake fluid

levellevel

There is insufficient brake fluid in the brake fluid reservoir.

In addition, the red J warning lamp lights up on the instrument

cluster and a warning tone sounds.

WARNING

Braking efficiency 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.

Secure the vehicle against rolling away (Y page 155).

Consult a qualified specialist workshop.

Do not top up the brake fluid. This does not correct the fault.

CheckCheck brakebrake padpad wearwear

The brake pads/linings have reached their wear limit.

Consult a qualified specialist workshop.

InoperativeInoperative

One or more main features of the Mercedes-Benz Contact system are

malfunctioning.

Consult a qualified specialist workshop.

ActiveActive BrakeBrake AssistAssist

FunctionsFunctions currentlycurrently

limitedlimited SeeSee Owner'sOwner's

ManualManual

Active Brake Assist is temporarily inoperative.

Possible causes:

The radar sensor system is temporarily inoperative, e.g. due to

electromagnetic 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.

Once the causes listed above no longer apply, the display message

goes out.

Active Brake Assist is operational again.

If the display message does not disappear:

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Restart the engine.

Active BrakeActive Brake

Assist:Assist: SystemSystem inop‐inop‐

erativeerative

Active Brake Assist is unavailable due to a malfunction. The situation-

dependent braking assistance function may also have failed.

Consult a qualified specialist workshop immediately.

PRE-SAFE inopera‐PRE-SAFE inopera‐

tive See Owner'stive See Owner's

ManualManual

Important PRE-SAFE

functions have failed. All other occupant safety

systems, e.g. airbags, remain available.

Consult a qualified specialist workshop immediately.

Display messages

223

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

RadarRadar sensorssensors dirtydirty

See Owner's ManualSee Owner's Manual

The radar sensor system is malfunctioning.

Possible causes:

Dirt on sensors

Heavy rain or snow

Driving on inter-urban roads without traffic or infrastructure, e.g. in

desert-like areas

At least one driving system or driving safety system is malfunctioning

or is temporarily unavailable:

Active Brake Assist

Distance Pilot DISTRONIC

A warning tone also sounds.

Once the cause of the problem is no longer present, the driving and

driving safety systems will be available again. The display message

disappears.

If the display message does not disappear:

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Switch off the engine.

Clean all sensors (Y page 289).

Restart the engine.

The display message disappears.

If this symbol appears in the multifunction display, a seat belt tongue

has been inserted into a rear seat belt buckle.

Further information on the status indicator for the rear seat belts

(Y page 44).

If this symbol appears in the multifunction display, a seat belt tongue

has not been inserted in a rear seat belt buckle.

WARNING

A seat belt which is not worn correctly, or which has not been engaged

in the seat belt buckle correctly, cannot provide the intended level of

protection.

This poses an increased risk of injury.

If necessary, ask the occupants in the rear to fasten their seat belts

(Y page 43).

Further information on the status indicator for the rear seat belts

(Y page 44).

224

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Restraint sys. mal‐Restraint sys. mal‐

function Consultfunction Consult

workshopworkshop

The restraint system is malfunctioning. The 6 warning lamp also

lights up on the instrument cluster.

WARNING

The airbags or belt tensioners may either be triggered unintentionally

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

This poses an increased risk of injury.

Consult a qualified specialist workshop immediately.

Further information about the restraint system (Y page 39).

Front left malfunc‐Front left malfunc‐

tion Consult work‐tion Consult work‐

shopshop or Front rightFront right

malfunction

malfunction ConsultConsult

workshopworkshop

The front left or right restraint system is malfunctioning. The 6

warning lamp also lights up on the instrument cluster.

WARNING

The airbags or belt tensioners may either be triggered unintentionally

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

This poses an increased risk of injury.

Consult a qualified specialist workshop immediately.

Rear left malfunc‐Rear left malfunc‐

tion Consult work‐tion Consult work‐

shopshop or Rear rightRear right

malfunction

malfunction ConsultConsult

workshopworkshop

The rear left or right restraint system is malfunctioning. The 6

warning lamp also lights up on the instrument cluster.

WARNING

The airbags or belt tensioners may either be triggered unintentionally

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

This poses an increased risk of injury.

Consult a qualified specialist workshop immediately.

Left windowbag mal‐Left windowbag mal‐

function Consultfunction Consult

workshopworkshop or RightRight

windowbag malfunc‐

tion Consult work‐tion Consult work‐

shopshop

The left-hand or right-hand windowbag is malfunctioning. The 6

warning lamp also lights up in the instrument cluster.

WARNING

The left-hand or right-hand windowbag may either be triggered unin-

tentionally or, in the event of an accident, not triggered at all.

This poses an increased risk of injury.

Consult a qualified specialist workshop immediately.

Display messages

225

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Front-passengerFront-passenger

airbagairbag disableddisabled SeeSee

Owner's ManualOwner's Manual

The front-passenger front airbag is disabled during the journey

although:

an adult

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

If additional forces are applied to the seat, the weight the system

detects may be too low.

WARNING

The front-passenger front airbag does not deploy during an accident.

This poses 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 155).

Switch the ignition off.

Have the occupant on the front-passenger seat step out of the

vehicle.

Make sure that the seat is unoccupied, close the front-passenger

door and switch on the ignition.

Observe the PASSENGER AIR BAG indicator lamps in the centre

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 light up simultaneously

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,

the automatic front-passenger front airbag deactivation system

has disabled the front-passenger front airbag (Y page 47)

The

Front-passenger airbag enabled See Owner's Man‐Front-passenger airbag enabled See Owner's Man‐

ual

ual or Front-passenger airbag disabled See Owner'sFront-passenger airbag disabled See Owner's

Manual

Manual display messages must not be shown in the multifunction

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 on the multi-

function display.

If these conditions are met, the front-passenger seat can be occupied

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

remains lit or goes out depends on how the automatic front-passenger

front airbag deactivation system classifies the occupant.

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

Consult a qualified specialist workshop immediately.

Further information on the automatic front-passenger front airbag

deactivation feature (Y page 47).

226

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Front-passengerFront-passenger

airbag enabled Seeairbag enabled See

Owner's ManualOwner's Manual

The front-passenger front airbag is enabled during the journey

although:

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

weight threshold is located on the front-passenger seat

the front-passenger seat is not occupied

The system may detect objects or forces that are placing additional

weight on the seat.

WARNING

The airbag may deploy unintentionally.

This poses 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 155).

Switch the ignition off.

Open the front-passenger door.

Remove the child and child seat from the front-passenger seat.

Make sure that no objects are present that are applying additional

weight to the seat.

The system might otherwise detect the additional weight and inter-

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

Make sure that the seat is unoccupied, close the front-passenger

door and switch on the ignition.

Observe the PASSENGER AIR BAG indicator lamps in the centre

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 light up simultaneously

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,

the automatic front-passenger front airbag deactivation system

has disabled the front-passenger front airbag (Y page 47)

The

Front-passenger airbag enabled See Owner's Man‐Front-passenger airbag enabled See Owner's Man‐

ual

ual or Front-passenger airbag disabled See Owner'sFront-passenger airbag disabled See Owner's

Manual

Manual display messages must not be shown in the multifunction

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 on the multi-

function display.

If these conditions are met, the front-passenger seat can be occupied

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

remains lit or goes out depends on how the automatic front-passenger

front airbag deactivation system classifies the occupant.

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

Display messages

227

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Consult a qualified specialist workshop immediately.

Further information on the automatic front-passenger front airbag

deactivation feature (Y page 47).

Lights

Vehicles with LED light bulbs in the light clusters:

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

failed.

Display messages

Possible causes/consequences and MM Solutions

Left corneringLeft cornering

lightlight or Right cor‐Right cor‐

nering light

The left or right-hand cornering light is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Left dipped beamLeft dipped beam or

Right dipped beamRight dipped beam

The left or right-hand dipped-beam headlamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Trailer left tailTrailer left tail

lamplamporTrailer rightTrailer right

tail lamp

The left or right-hand trailer tail lamp is faulty.

Consult the manufacturer's operating instructions.

Trailer left turnTrailer left turn

signalsignalorTrailerTrailer

right turn signal

The left or right-hand trailer turn signal lamp is faulty.

Consult the manufacturer's operating instructions.

Trailer brake lampTrailer brake lamp

The trailer brake lamp is faulty.

Consult the manufacturer's operating instructions.

RearRear leftleft indicatorindicator

or Rear right indi‐Rear right indi‐

cator

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

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

228

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Front left indica‐Front left indica‐

tortor or Front rightFront right

indicator

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

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Left mirror indica‐Left mirror indica‐

tortor or Right mirrorRight mirror

indicator

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

Consult a qualified specialist workshop.

Third brake lampThird brake lamp

The third brake lamp is faulty.

Consult a qualified specialist workshop.

Left brakeLeft brake

lamplamporRight brakeRight brake

lamp

The left or right-hand brake lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Left-handLeft-hand tailtail lamp/lamp/

brake lampbrake lamp or Right-Right-

hand tail lamp/

brake lampbrake lamp

The left or right-hand tail lamp/brake lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Left main beamLeft main beam or

Right main beamRight main beam

The left or right-hand main-beam headlamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Number plate lampNumber plate lamp

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

Consult a qualified specialist workshop.

Rear fog lampRear fog lamp

The rear foglamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Front left parkingFront left parking

lamplamp or Front rightFront right

parking lamp

The front left or front right parking lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Display messages

229

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Reversing lightReversing light

The reversing lamp is faulty.

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

Left tail lampLeft tail lamp or

Right tail lampRight tail lamp

The left or right-hand tail lamp is faulty.

Consult a qualified specialist workshop.

Left daytime driv‐Left daytime driv‐

ing lamping lamp or RightRight

daytime

daytime drivingdriving lamplamp

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

Check whether you are permitted to replace the bulb yourself

(Y page 111).

Consult a qualified specialist workshop.

MalfunctionMalfunction SeeSee Own‐Own‐

er's Manualer's Manual

The exterior lighting is faulty.

Consult a qualified specialist workshop.

Vehicles with trailer tow hitch: a fuse may have blown.

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Check the fuses (Y page 308).

If necessary, replace the blown fuse. Observe the warning notes as

you do so.

If the multifunction display still shows the display message:

Consult a qualified specialist workshop.

AUTO lights inoper‐AUTO lights inoper‐

ativeative

The light sensor is faulty.

Consult 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 without dipped-beam headlamps.

Turn the light switch to the L or Ã position.

230

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Adaptive Main-beamAdaptive Main-beam

Assist currentlyAssist currently

unavailableunavailable SeeSee Own‐Own‐

er's Manualer's Manual

Adaptive Highbeam Assist is deactivated and temporarily inoperative.

Possible causes:

The windscreen is dirty in the camera's field of vision.

Visibility is impaired due to heavy rain, snow or fog.

Clean the windscreen.

If the system detects that the camera is fully operational again, the

Adaptive Main-beam Assist available againAdaptive Main-beam Assist available again message is dis-

played.

Adaptive Highbeam Assist is operational again.

Adaptive Main-beamAdaptive Main-beam

Assist inoperativeAssist inoperative

Adaptive Highbeam Assist is faulty.

Consult a qualified specialist workshop.

Engine

Display messages

Possible causes/consequences and MM Solutions

Top up coolant SeeTop up coolant See

Owner's ManualOwner's Manual

The coolant level is too low.

Avoid making long journeys with too little coolant in the engine

cooling system. The engine will otherwise be damaged.

Top up the coolant, observing the warning notes before doing so

(Y page 283).

If you have to top up the coolant frequently:

Contact a qualified specialist workshop and have the engine cooling

system checked.

The fan motor is faulty.

If the coolant temperature is below 120 †, drive on to the nearest

qualified specialist workshop.

Avoid heavy loads on the engine as you do so, e.g. driving in moun-

tainous terrain and stop-start traffic.

Display messages

231

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Coolant Stop vehi‐Coolant Stop vehi‐

cle Switch enginecle Switch engine

offoff

The coolant is too hot.

A warning tone also sounds.

WARNING

Never drive with an overheated engine. Driving when your engine has

overheated can cause any fluids that may have leaked into the engine

compartment to catch fire.

In addition, steam from an overheated engine can cause serious

burns, which can occur just by opening the bonnet.

There is a risk of injury.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Wait until the engine has cooled down.

Make sure that the air supply to the engine radiator is not blocked,

e.g. by frozen slush.

Do not start the engine again until the display message goes out and

the coolant temperature is below 120 †. The engine may otherwise

be damaged.

Pay attention to the coolant temperature gauge.

If the temperature increases again:

Consult a qualified specialist workshop immediately.

Under normal operating conditions and with the specified coolant

level, the coolant temperature may rise to 120 †.

See Owner's ManualSee Owner's Manual

The battery is no longer being charged.

A warning tone also sounds.

Possible causes:

faulty alternator

torn poly-V-belt

a malfunction in the electronics

Do not continue driving. The engine could otherwise overheat.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Consult a qualified specialist workshop.

232

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Stop vehicle SeeStop vehicle See

Owner's ManualOwner's Manual

The 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 engine.

Safeguard the vehicle against rolling away (Y page 155).

Observe the instructions in the #

SeeSee Owner'sOwner's ManualManual display

message.

Consult a qualified specialist workshop.

CheckCheck eng.eng. oiloil lev.lev.

whenwhen nextnext refuellingrefuelling

The engine oil level has dropped to the minimum level.

A warning tone also sounds.

Avoid long journeys when there is too little coolant in the cooling

system. Otherwise the engine will be damaged.

Check the oil level when next refuelling, at the latest (Y page 282).

If necessary, top up the engine oil (Y page 283).

If you have to top up the engine oil frequently:

Contact a qualified specialist workshop and have the engine

checked.

Information on approved engine oils can be obtained from any quali-

fied specialist workshop or on the Internet at

Add 1 litre engineAdd 1 litre engine

oil when next refu‐oil when next refu‐

ellingelling

The engine oil level has dropped to the minimum level.

Avoid long journeys when there is too little coolant in the cooling

system. Otherwise the engine will be damaged.

Check the oil level when next refuelling, at the latest (Y page 282).

If necessary, top up the engine oil (Y page 283).

If you have to top up the engine oil frequently:

Contact a qualified specialist workshop and have the engine

checked.

Information on approved engine oils can be obtained from any quali-

fied specialist workshop or on the Internet at

Engine oil levelEngine oil level

StopStop vehiclevehicle SwitchSwitch

engine offengine off

The engine oil level is too low. There is a risk of engine damage.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Check the engine oil level (Y page 282).

If necessary, top up the engine oil (Y page 283).

Display messages

233

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Reserve fuel levelReserve fuel level

The fuel level has dropped into the reserve range.

Operation of the auxiliary heating is deactivated if the fuel level drops

into the reserve range.

Refuel at the nearest filling station.

There is very little fuel in the fuel tank.

Operation of the auxiliary heating is deactivated.

You must refuel at the nearest filling station.

Replace air cleanerReplace air cleaner

Vehicles with a diesel engine: the engine air filter is dirty and must be

replaced.

Consult a qualified specialist workshop.

Clean the fuel fil‐Clean the fuel fil‐

terter

Vehicles with a diesel engine: there is water in the fuel filter. The water

must be drained off.

Consult a qualified specialist workshop.

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

increasing lapses in 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 that you get

enough rest.

Attention AssistAttention Assist

inoperativeinoperative

ATTENTION ASSIST is inoperative.

Consult a qualified specialist workshop.

OffOff

The HOLD function is deactivated. The vehicle has started to skid.

A warning tone also sounds.

Reactivate the HOLD function later (Y page 172).

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

depressed, an activation condition is no longer fulfilled.

A warning tone also sounds.

Check the activation conditions for the HOLD function

(Y page 172).

234

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

LaneLane KeepingKeeping AssistAssist

currently unavaila‐currently unavaila‐

bleble SeeSee Owner'sOwner's Man‐Man‐

ualual

Lane Keeping Assist is deactivated and temporarily inoperative.

Possible causes:

The windscreen is dirty in the camera's field of vision.

Visibility is impaired due to heavy rain, snow or fog.

There have been no lane markings for an extended period.

the lane markings are worn, dark or covered, e.g. by dirt or snow

Once the causes listed above no longer apply, the display message

goes out.

Lane Keeping Assist is operational again.

If the display message does not disappear:

Stop the vehicle, paying attention to road and traffic conditions.

Safeguard the vehicle against rolling away (Y page 155).

Clean the windscreen.

LaneLane KeepingKeeping AssistAssist

inoperativeinoperative

Lane Keeping Assist is faulty.

Consult a qualified specialist workshop.

Blind Spot AssistBlind Spot Assist

currently unavaila‐currently unavaila‐

bleble SeeSee Owner'sOwner's Man‐Man‐

ualual

Blind Spot Assist is temporarily inoperative.

Possible causes:

The radar sensor system is temporarily inoperative, e.g. due to

electromagnetic 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.

Once the causes listed above no longer apply, the display message

goes out.

Blind Spot Assist is operational again.

If the display message does not disappear:

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Restart the engine.

Active Blind SpotActive Blind Spot

Assist not availa‐Assist not availa‐

ble when towing able when towing a

trailertrailer SeeSee Owner'sOwner's

ManualManual.

Blind Spot Assist is deactivated while towing a trailer.

You have established the electrical connection between the trailer and

your vehicle.

Press a on the steering wheel to confirm the display message.

Blind Spot AssistBlind Spot Assist

inoperativeinoperative

Blind Spot Assist is malfunctioning.

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

Consult a qualified specialist workshop.

Parking Pilot can‐Parking Pilot can‐

celled

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.

Display messages

235

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

You inadvertently touched the multifunction steering wheel while

steering intervention was active.

While steering intervention is active, make sure not to touch the

multifunction steering wheel.

The vehicle has started to skid and ESP

has intervened.

Use Parking Pilot again later (Y page 180).

Parking Pilot inop‐Parking Pilot inop‐

erativeerative

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

vres.

Parking Pilot will become available again after approximately ten

minutes (Y page 180).

Stop the vehicle, paying attention to road and traffic conditions.

Switch off and restart the engine.

If the multifunction display still shows the display message:

Consult a qualified specialist workshop.

Parking Assist PARKTRONIC is faulty.

Consult a qualified specialist workshop.

Parking Pilot endedParking Pilot ended

The vehicle is parked. A warning tone also sounds.

The display message disappears automatically.

TrafficTraffic SignSign AssistAssist

currently unavaila‐currently unavaila‐

bleble SeeSee Owner'sOwner's Man‐Man‐

ualual

Traffic Sign Assist is temporarily inoperative.

Possible causes:

The windscreen is dirty in the camera's field of vision.

Visibility is impaired due to heavy rain, snow or fog.

Clean the windscreen.

If the system detects that the camera is fully operational, the display

message disappears.

Traffic Sign Assist is operational again.

TrafficTraffic SignSign AssistAssist

inoperativeinoperative

Traffic Sign Assist is faulty.

Consult a qualified specialist workshop.

Distance Pilot offDistance Pilot off

Distance Pilot DISTRONIC is deactivated (Y page 167).

If it was not deactivated by the driver, a warning tone also sounds.

Distance PilotDistance Pilot

available againavailable again

Distance Pilot DISTRONIC is operational again after having been tem-

porarily unavailable. You can now reactivate Distance Pilot

DISTRONIC (Y page 167).

236

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Distance Pilot cur‐Distance Pilot cur‐

rently unavailablerently unavailable

See Owner's ManualSee Owner's Manual

Distance Pilot DISTRONIC is temporarily inoperative.

Possible causes:

The radar sensor system is temporarily inoperative, e.g. due to

electromagnetic 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.

A warning tone also sounds.

Once the causes listed above no longer apply, the display message

goes out.

Distance Pilot DISTRONIC is operational again.

If the display message does not disappear:

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Restart the engine.

DistanceDistance PilotPilot inop‐inop‐

erativeerative

Distance Pilot DISTRONIC is faulty. The situation-dependent braking

assistance function may also have failed.

A warning tone also sounds.

Consult a qualified specialist workshop.

Distance Pilot pas‐Distance Pilot pas‐

sivesive

You have depressed the accelerator pedal. Distance Pilot DISTRONIC

is no longer controlling the speed of the vehicle.

Remove your foot from the accelerator pedal.

Distance PilotDistance Pilot

- - - km/h- - - km/h

A condition for activating Distance Pilot DISTRONIC has not been met.

Check the activation conditions for Distance Pilot DISTRONIC

(Y page 167).

Distance Pilot andDistance Pilot and

Limiter inoperativeLimiter inoperative

Distance Pilot DISTRONIC and speed limiter are faulty. A warning tone

also sounds.

Consult a qualified specialist workshop.

Cruise control andCruise control and

Limiter inoperativeLimiter inoperative

Cruise control and speed limiter are faulty.

A warning tone also sounds.

Consult a qualified specialist workshop.

Limiter passiveLimiter passive

If you depress the accelerator pedal beyond the pressure point (kick-

down), the limiter is switched to passive mode.

The speed limitation is not active.

Drive slower than the stored speed and without kickdown.

Call up the last speed stored again.

Set a new speed.

When the display message disappears, the speed limitation is active.

Display messages

237

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Cruise controlCruise control

- - - km/h- - - km/h

A condition for activating cruise control has not been met.

You have tried to store a speed below 30 km/h, for example.

ESP

is deactivated The yellow ESP

OFF warning lamp is lit.

If conditions permit, drive faster than 30 km/h and store the speed.

Check the activation conditions for cruise control (Y page 162).

Reactivate ESP

(Y page 209).

120 km/h!120 km/h!

MaximumMaximum speedspeed excee‐excee‐

dedded

Only for certain countries: the maximum speed has been exceeded.

In addition, the multifunction display shows 120 km/h!120 km/h!.

Drive more slowly.

238

Display messages

On-board computer and displays

Tyres

Display messages

Possible causes/consequences and MM Solutions

TyreTyre pressurepressure CheckCheck

tyre(s)tyre(s)

The tyre pressure loss warning system has detected a significant loss

in pressure.

A warning tone also sounds.

Possible causes:

you have changed the positions of the wheels and tyres or fitted new

wheels and tyres

the tyre pressure in one or more tyres has dropped

WARNING

Underinflated tyres pose the following risks:

the tyres may burst, especially as the load and vehicle speed

increase

the tyres may wear excessively and/or unevenly, which may greatly

impair tyre 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

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

Secure the vehicle against rolling away (Y page 155).

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

tyre (Y page 294).

Check and, if necessary, correct the tyre pressures.

Restart the tyre pressure loss warning system when the tyre pres-

sure is correct (Y page 315).

Check tyre pres‐Check tyre pres‐

sures then restartsures then restart

Run Flat IndicatorRun Flat Indicator

The tyre pressure loss warning system generated a display message

and has not been restarted since.

Set the correct tyre pressure in all four tyres.

Restart the tyre pressure loss warning system (Y page 315).

Run Flat IndicatorRun Flat Indicator

inoperativeinoperative

The tyre pressure loss warning system is faulty.

Consult a qualified specialist workshop.

Rectify tyre pres‐Rectify tyre pres‐

suresure

The tyre pressure is too low in at least one of the tyres, or the tyre

pressure difference between the wheels is too great.

Check the tyre pressures at the next opportunity (Y page 315).

If necessary, correct the tyre pressure.

Restart the tyre pressure monitor (Y page 317).

Display messages

239

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Check tyre(s)Check tyre(s)

The tyre pressure in one or more tyres has dropped significantly. The

wheel position appears in the multifunction display.

A warning tone also sounds.

WARNING

Underinflated tyres pose the following risks:

the tyres may burst, especially as the load and vehicle speed

increase

the tyres may wear excessively and/or unevenly, which may greatly

impair tyre 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

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

Secure the vehicle against rolling away (Y page 155).

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

tyre (Y page 294).

Check the tyre pressure (Y page 315).

If necessary, correct the tyre pressure.

Warning tyre defectWarning tyre defect

The tyre pressure in one or more tyres has dropped suddenly. The

wheel position appears in the multifunction display.

WARNING

If you drive with a flat tyre, there is a risk of the following hazards:

a flat tyre impairs the ability to steer or brake the vehicle

you could lose control of the vehicle

continued driving with a flat tyre 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

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

Secure the vehicle against rolling away (Y page 155).

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

tyre (Y page 294).

TyreTyre press.press. monitormonitor

currently unavaila‐currently unavaila‐

bleble

No signals can be received from the tyre pressure sensors due to

strong RF interference. The tyre pressure monitor is temporarily mal-

functioning.

Drive on.

The tyre pressure monitor restarts automatically as soon as the

cause has been rectified.

240

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Wheel sensor(s)Wheel sensor(s)

missingmissing

There is no signal from the tyre pressure sensor of one or several tyres.

The pressure of the affected tyre is not displayed in the multifunction

display.

Have the faulty tyre pressure sensor replaced at a qualified spe-

cialist workshop.

TyreTyre press.press. monitormonitor

inoperative Noinoperative No

wheel sensorswheel sensors

The wheels fitted do not have suitable tyre pressure sensors. The tyre

pressure monitor is deactivated.

Fit wheels with suitable tyre pressure sensors.

The tyre pressure monitor is activated after driving for a few

minutes.

TyreTyre press.press. monitormonitor

inoperativeinoperative

The tyre pressure monitor is faulty.

Consult 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 engine with the transmission in posi-

tion N without depressing the brake pedal.

Depress the brake pedal.

To shift out of PTo shift out of P

oror N,N, depressdepress brakebrake

and start engineand start engine

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

out starting the engine.

Start the engine.

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 Ò20 †you can only shift

out of position P into another transmission position when the

engine is running.

ApplyApply brakebrake toto dese‐dese‐

lect Park (P) posi‐lect Park (P) posi‐

tiontion

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

without depressing the brake pedal.

Depress the brake pedal.

Display messages

241

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Risk of vehicleRisk of vehicle

rolling Transmis‐rolling Transmis‐

sion not in Psion not in P

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 155).

Close the driver's door fully.

Without changingWithout changing

gear, consult work‐gear, consult work‐

shopshop

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 155).

Consult a qualified specialist workshop.

Only select ParkOnly select Park

(P)(P) whenwhen vehiclevehicle isis

stationarystationary

The vehicle is moving.

Stop the vehicle, paying attention to road and traffic conditions.

Shift the transmission to position P.

Apply brake toApply brake to

select Rselect R

You have attempted to shift from position D or N to position R.

Shift the transmission to position R when the brake pedal is

depressed.

ReversingReversing notnot poss.poss.

Consult workshopConsult workshop

The automatic transmission is malfunctioning. You cannot drive in

reverse.

Consult a qualified specialist workshop.

Transmission Mal‐Transmission Mal‐

functionfunction

The automatic transmission is malfunctioning.

Consult a qualified specialist workshop.

Transmission Mal‐Transmission Mal‐

function Stopfunction Stop

The automatic transmission is malfunctioning.

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Consult a qualified specialist workshop.

242

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Stop vehicle ShiftStop vehicle Shift

to P Leave engineto P Leave engine

runningrunning

The automatic transmission has overheated.

Drive on carefully.

If the display message disappears, the automatic transmission is

available again.

If the multifunction display still shows the display message:

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Wait until the automatic transmission has cooled down and the dis-

play message goes out.

Auxiliary batteryAuxiliary battery

malfunctionmalfunction

The auxiliary battery for the automatic transmission is no longer being

charged.

Consult a qualified specialist workshop.

Until then, always shift the transmission to position P before you

switch off the engine.

Before leaving the vehicle, apply the electric parking brake.

Clutch overheatedClutch overheated

Avoid pulling awayAvoid pulling away

If necessary,If necessary,

quicklyquickly releaserelease andand

engage the clutchengage the clutch

The clutch is under considerable load and the permitted operating

temperature has been exceeded. A warning tone also sounds.

Avoid frequent pulling away and driving at walking pace over longer

distances.

Stop the vehicle, paying attention to road and traffic conditions.

Secure the vehicle against rolling away (Y page 155).

Leave the engine running.

The clutch is cooled more quickly with the engine running.

If possible, drive on at a steady speed.

Remove your foot from the clutch pedal and do not allow the clutch

to slip.

The clutch may also cool down during the journey.

It may take several minutes for it to cool down. When the clutch has

cooled down, the display message disappears. The clutch is fully

operational again.

For engine startFor engine start

depress clutchdepress clutch

You have attempted to start the engine without depressing the clutch

pedal.

Depress the clutch pedal.

Restart the engine.

The engine has stalled while pulling away, e.g. because the clutch

pedal was released too quickly.

Depress the clutch pedal again.

The engine starts automatically.

Slowly release the clutch pedal to pull away.

Display messages

243

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Trans. oil overhea‐Trans. oil overhea‐

ted Drive on withted Drive on with

carecare

Mercedes-AMG vehicles: the transmission oil has overheated.

Manual drive program M and the temporarily active manual drive pro-

gram are no longer available. Engine power output is reduced.

Allow the vehicle to cool down.

4matic currently4matic currently

unavailableunavailable

4MATIC has overheated. The vehicle is only driven by the front wheels.

Drive on.

The airflow cools 4MATIC more quickly.

When the display message goes out, 4MATIC is available again and

the vehicle is driven by all four wheels.

4matic inoperative4matic inoperative

4MATIC is malfunctioning. The vehicle is only driven by the front

wheels.

Consult a qualified specialist workshop.

The boot lid is open.

Close the boot lid.

The bonnet is open.

A warning tone also sounds.

WARNING

The open bonnet may then 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 155).

Close the bonnet.

Active bonnet mal‐Active bonnet mal‐

function See Own‐function See Own‐

er's Manualer's Manual

The active bonnet (pedestrian protection) is not active due to a mal-

function or because it has already been triggered.

Consult a qualified specialist workshop.

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

Close all doors.

244

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

CheckCheck trailertrailer hitchhitch

locklock

The trailer tow hitch is not correctly engaged.

A warning tone also sounds.

WARNING

If the ball coupling is not engaged, the trailer may come loose. There

is a risk of an accident.

Stop the vehicle immediately, paying attention to road and traffic

conditions, and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Engage the ball coupling of the trailer tow hitch in the end position

(Y page 197).

inoperativeinoperative BatteryBattery

LowLow

The on-board voltage is too low. The auxiliary heating has switched

itself off or cannot be switched on (Y page 126).

Drive for a considerable distance.

The battery charges. The auxiliary heating is operational again as

soon as the on-board electrical system voltage is sufficient.

inoperative Refuelinoperative Refuel

vehiclevehicle

There is too little fuel in the fuel tank. The auxiliary heating cannot be

switched on (Y page 126).

Refuel at the nearest filling station.

inoperativeinoperative SeeSee Own‐Own‐

er's Man.er's Man.

The auxiliary heating is temporarily malfunctioning or faulty.

If the vehicle is on a level surface and the engine has cooled down:

Make up to four attempts to switch on the auxiliary heating, waiting

several minutes between each attempt (Y page 126).

If the auxiliary heating does not switch on:

Consult a qualified specialist workshop.

Power steering mal‐Power steering mal‐

function See Own‐function See Own‐

er's Manualer's Manual

The power steering assistance is faulty.

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 steering force

required.

If you are able to steer safely:

Drive on carefully.

Consult a qualified specialist workshop immediately.

If you are unable to steer safely:

Do not drive on.

Consult a qualified specialist workshop.

Display messages

245

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Steering malfunc‐Steering malfunc‐

tion See Owner'stion See Owner's

ManualManual

The electric steering lock is malfunctioning.

WARNING

The steering may be locked by the electric steering lock.

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 155).

Do not drive on.

Consult a qualified specialist workshop.

BeforeBefore startingstarting thethe

engine, turn theengine, turn the

steering wheel.steering wheel.

The electric steering lock was unable to unlock the steering.

Remove the key from the ignition lock.

To unlock the steering, move the steering wheel slightly.

Insert the key into the ignition lock again.

TelephoneTelephone NoNo serviceservice

Your vehicle is outside the mobile phone network provider's trans-

mitter/receiver range.

Wait until the mobile phone operational readiness symbol appears

in the multifunction display.

Top up washer fluidTop up washer fluid

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

the minimum.

Top up the washer fluid (Y page 284).

Wiper malfunction‐Wiper malfunction‐

inging

The windscreen wipers are defective.

Consult a qualified specialist workshop.

Hazard warningHazard warning

lamps malfunction‐lamps malfunction‐

inging

The hazard warning lamps are faulty.

Consult a qualified specialist workshop.

Key

Display messages

Possible causes/consequences and MM Solutions

KeyKey doesdoes notnot belongbelong

to vehicleto vehicle

You have put the wrong key in the ignition lock.

Use the correct key.

Replace keyReplace key

The key needs to be replaced.

Consult a qualified specialist workshop.

ChangeChange keykey batteriesbatteries

The key battery is discharged.

Change the battery(Y page 79).

246

Display messages

On-board computer and displays

Display messages

Possible causes/consequences and MM Solutions

Key not detectedKey not detected

(red display message)

The key is not in the vehicle.

A warning tone also sounds.

If the engine is switched off, you can no longer lock the vehicle cen-

trally or start the engine.

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 155).

Locate the key.

Because there is interference from a strong source of radio waves, the

key is not detected whilst the engine 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 155).

Insert the key into the ignition lock and bring into key mode.

Key not detectedKey not detected

(white display message)

The key is currently undetected.

Change the location of the key in the vehicle.

If the key still cannot be detected:

Operate the vehicle with the key in the ignition lock if necessary.

RemoveRemove startingstarting but‐but‐

ton,ton, thenthen insertinsert keykey

The key is continually undetected.

The key detection function has a temporary malfunction or is faulty. A

warning tone also sounds.

Insert the key into the ignition lock and turn it to the desired posi-

tion.

Consult a qualified specialist workshop.

Warning and indicator lamps in the instrument cluster

General notes

Some systems perform a self test when the ignition is switched on. Some warning and indicator

lamps may temporarily switch on or flash during the test. This behaviour is nothing to be concerned

about.

The warning and indicator lamps will alert you to a malfunction if they switch on or flash after the

engine is started or while driving.

Warning and indicator lamps in the instrument cluster

247

On-board computer and displays

Safety

Seat belts

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N Only for certain countries: the red seat belt warning lamp lights up for 6 seconds

after the engine starts.

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

seat belts.

Fasten your seat belt (Y page 43).

N Only for certain countries: the red seat belt warning lamp lights up after the

engine starts. 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 43).

The warning tone ceases.

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

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

The driver or passenger has not fastened their seat belt.

Fasten your seat belt (Y page 43).

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 passenger has not fastened their seat belt. At the same time, you are

driving faster than 25 km/h or have briefly driven faster than 25 km/h.

Fasten your seat belt (Y page 43).

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

There are objects on the front-passenger seat. At the same time, you are driving

faster than 25 km/h or have briefly driven faster than 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.

248

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Safety systems

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The red brake system warning lamp lights up while the engine 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.

Stop the vehicle immediately, paying attention to road and traffic conditions. Do

not continue driving.

Secure the vehicle against rolling away (Y page 155).

Consult a qualified specialist workshop.

Observe the additional display messages in the multifunction display.

N The red brake system warning lamp lights up while the engine is running. A

warning tone also sounds.

There is insufficient brake fluid in the brake fluid reservoir.

WARNING

Braking efficiency may be impaired.

There is a risk of an accident.

Stop the vehicle immediately, paying attention to road and traffic conditions. Do

not continue driving.

Secure the vehicle against rolling away (Y page 155).

Do not top up the brake fluid. Topping up will not correct the fault.

Consult a qualified specialist workshop.

Observe the additional display messages in the multifunction display.

Warning and indicator lamps in the instrument cluster

249

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The yellow ABS warning lamp lights up while the engine is running.

ABS (Anti-lock Braking System) has been deactivated due to a fault. BAS (Brake

Assist), Active Brake Assist, ESP

(Electronic Stability Program), ESP

trailer sta-

bilisation, the HOLD function, hill start assist, the adaptive brake lights and

PRE‑SAFE

are also deactivated, for example.

ATTENTION ASSIST is deactivated.

WARNING

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 impaired as a result.

The braking distance may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Observe the additional display messages in the multifunction display.

Drive on carefully.

Consult a qualified specialist workshop immediately.

If the ABS control unit is faulty, there is also a possibility that other systems, such

as the navigation system or the automatic transmission, will be unavailable.

250

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 yellow ABS warning lamp lights up while the engine is running.

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

, ESP

trailer sta-

bilisation, EBD (Electronic Brake-force Distribution), the HOLD function, hill start

assist, the adaptive brake lights and PRE‑SAFE

, for example, are also deactivated.

Possible causes:

Self-diagnosis is not yet complete.

The on-board voltage may be insufficient.

ATTENTION ASSIST is deactivated.

WARNING

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 impaired as a result.

The braking distance may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

There is a risk of an accident.

Carefully drive on a suitable stretch of road, making slight steering movements

at a speed above 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.

Consult a qualified specialist workshop immediately.

N The yellow ABS warning lamp lights up while the engine is running. A warning

tone also sounds.

EBD is faulty. ABS, BAS, Active Brake Assist, ESP

, ESP

trailer stabilisation, the

HOLD function, hill start assist, the adaptive brake lights and PRE‑SAFE

, for

example, are also unavailable.

ATTENTION ASSIST is deactivated.

WARNING

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 impaired as a result.

The braking distance may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Observe the additional display messages in the multifunction display.

Drive on carefully.

Consult a qualified specialist workshop immediately.

Warning and indicator lamps in the instrument cluster

251

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

N 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, Active Brake Assist, EBD, PRE‑SAFE

, the

HOLD function, hill start assist, the adaptive brake lights and ESP

trailer stabili-

sation, for example, are also unavailable.

ATTENTION ASSIST is deactivated.

WARNING

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 impaired as a result.

The braking distance may increase in an emergency braking situation.

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Observe the additional display messages in the multifunction display.

Drive on carefully.

Consult a qualified specialist workshop immediately.

N The yellow ESP

warning lamp flashes while the vehicle is in motion.

ESP

or traction control has engaged due to a risk of skidding or because at least

one wheel has started to spin.

Cruise control or Distance Pilot DISTRONIC is deactivated.

Only depress the accelerator pedal as far as necessary when pulling away.

Accelerate more gently while the vehicle is in motion.

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

Do not deactivate ESP

In exceptional cases (Y page 71) it may be better to deactivate ESP

Observe the important safety notes on ESP

(Y page 70).

252

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 yellow ESP

OFF warning lamp is lit while the engine is running.

ESP

is deactivated. ESP

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

wheel starts to spin.

WARNING

If ESP

is deactivated, ESP

is unable to stabilise the vehicle.

Further driving systems or driving safety systems are thus restricted.

Increased risk of skidding and/or accident!

Reactivate ESP

In exceptional cases (Y page 71) it may be better to deactivate ESP

Observe the important safety notes on ESP

(Y page 70).

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

If ESP

cannot be activated:

Drive on carefully.

Contact a qualified specialist workshop immediately and have the ESP

system

checked.

N Mercedes-AMG vehicles only:

The yellow SPORT handling mode warning lamp lights up while the engine is run-

ning.

SPORT handling mode is activated.

WARNING

When SPORT handling mode is activated, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Only switch to SPORT handling mode in accordance with the conditions descri-

bed in the "Activating/deactivating ESP

" section (Y page 71).

÷å

N The yellow ESP

and ESP

OFF warning lamps are lit while the engine is running.

ESP

, ESP

trailer stabilisation, BAS, Active Brake Assist, the HOLD function, hill

start assist, the adaptive brake lights and PRE‑SAFE

are not available due to a

malfunction.

ATTENTION ASSIST is deactivated.

WARNING

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

above.

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

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Observe the additional display messages in the multifunction display.

Drive on carefully.

Consult a qualified specialist workshop immediately.

Warning and indicator lamps in the instrument cluster

253

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

÷å

N The yellow ESP

and ESP

OFF warning lamps are lit while the engine is running.

ESP

, ESP

trailer stabilisation, BAS, the HOLD function, hill start assist and PRE-

SAFE

are temporarily unavailable.

The adaptive brake lights and Active Brake Assist may also have failed.

ATTENTION ASSIST is deactivated.

Self-diagnosis is not yet complete.

WARNING

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

above.

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

If ESP

is not operational, ESP

is unable to stabilise the vehicle.

Increased risk of skidding and/or accident!

Carefully drive on a suitable stretch of road, making slight steering movements

at a speed above 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.

Consult a qualified specialist workshop immediately.

N 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 engine is running.

The restraint system is malfunctioning.

WARNING

The airbags or belt tensioners may either be triggered unintentionally or, in the

event of an accident, may not be triggered.

This poses an increased risk of injury.

Observe the additional display messages in the multifunction display.

Drive on carefully.

Contact a qualified specialist workshop immediately and have the restraint sys-

tem checked.

Further information about the restraint system (Y page 39).

254

Warning and indicator lamps in the instrument cluster

On-board computer and displays

Engine

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

;

N The yellow engine diagnostics warning lamp lights up while the engine is run-

ning.

There may be a fault with the following, for example:

Engine management

Fuel injection system

Exhaust system

Ignition system (for vehicles with petrol engines)

Fuel system

The emission limit values may be exceeded and the engine may be running in

emergency mode.

Consult a qualified specialist workshop immediately.

Vehicles with a diesel engine: the fuel tank has been run dry (Y page 155).

Start the engine three to four times after refuelling.

If the yellow engine diagnostics warning lamp goes out, emergency mode is

cancelled. The vehicle does not have to be checked.

N The yellow reserve fuel warning lamp lights up while the engine is running.

The fuel level has dropped into the reserve range.

Operation of the auxiliary heating is deactivated if the fuel level drops into the

reserve range.

Refuel at the nearest filling station.

N The red coolant warning lamp lights up while the engine is running and the

coolant temperature gauge is at the start of the scale.

The temperature sensor for the coolant temperature gauge is malfunctioning.

The coolant temperature is no longer being monitored. The engine could be dam-

aged if the coolant temperature is too high.

Stop the vehicle immediately, paying attention to road and traffic conditions,

and switch off the engine. Do not continue driving.

Secure the vehicle against rolling away (Y page 155).

Consult a qualified specialist workshop.

Warning and indicator lamps in the instrument cluster

255

On-board computer and displays

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

N The red coolant warning lamp lights up while the engine is running.

The coolant level is too low.

If the coolant level is correct, the airflow to the engine radiator may be blocked or

the electric engine radiator fan may be malfunctioning.

The coolant is too hot and the engine is not being cooled sufficiently.

Observe the additional display messages in the multifunction display.

Stop the vehicle immediately, paying attention to road and traffic conditions,

and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Leave the vehicle and keep a safe distance from the vehicle until the engine has

cooled down.

Check the coolant level and top up the coolant, making sure to observe the

warning notes (Y page 283).

If you have to top up the coolant frequently, have the engine cooling system

checked.

Make sure that the air supply to the engine radiator is not blocked, e.g. by frozen

slush.

Do not start the engine again until the coolant temperature is below 120 †. The

engine may otherwise be damaged.

Drive to the nearest qualified specialist workshop.

Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain

and stop-start traffic.

N The red coolant warning lamp lights up while the engine is running. A warning

tone also sounds.

The coolant temperature has exceeded 120 †. The airflow to the engine radiator

may be blocked or the coolant level may be too low.

WARNING

The engine is not being cooled sufficiently and may be damaged.

Never drive with an overheated engine. Driving when your engine has overheated

can cause any fluids that may have leaked into the engine compartment to catch

fire.

In addition, steam from an overheated engine can cause serious burns, which can

occur just by opening the bonnet.

There is a risk of injury.

Observe the additional display messages in the multifunction display.

Stop the vehicle immediately, paying attention to road and traffic conditions,

and switch off the engine.

Secure the vehicle against rolling away (Y page 155).

Leave the vehicle and keep a safe distance from the vehicle until the engine has

cooled down.

Check the coolant level and top up the coolant, making sure to observe the

warning notes (Y page 283).

If you have to top up the coolant frequently, have the engine cooling system

checked.

256

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

Make sure that the air supply to the engine radiator is not blocked, e.g. by frozen

slush.

If the coolant temperature is below 120 †, you can continue driving to the

nearest qualified specialist workshop.

Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain

and stop-start traffic.

Driving systems

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

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

The distance to the vehicle in front is too small for the speed selected.

Increase the distance.

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 67).

Warning and indicator lamps in the instrument cluster

257

On-board computer and displays

Tyres

Warning/

indicator

lamp

NN Signal type

Possible causes/consequences and M

M Solutions

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

lit.

The tyre pressure monitor has detected a loss of pressure in at least one of the

tyres.

WARNING

Underinflated tyres pose the following risks:

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

the tyres may wear excessively and/or unevenly, which may greatly impair tyre

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 manoeuvres.

Pay attention to the traffic conditions as you do so.

Safeguard the vehicle against rolling away (Y page 155).

Observe the additional display messages in the multifunction display.

Check the tyres and, if necessary, follow the instructions for a flat tyre

(Y page 294).

Check the tyre pressure (Y page 315).

If necessary, correct the tyre pressure.

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

flashes for approximately one minute and then remains lit.

The tyre pressure monitor is faulty.

WARNING

The system is possibly unable to detect or register low tyre pressure.

There is a risk of an accident.

Observe the additional display messages in the multifunction display.

Consult a qualified specialist workshop immediately.

258

Warning and indicator lamps in the instrument cluster

On-board computer and displays

On-board computer and displays for Your Mercedes CLA 4 Door First Generation (2013-2018)

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