›Release the clutch pedal.
Automatic engine shutdown then occurs and the indicator symbol appears in
the display
» Fig. 156 on page 158 .
Automatic engine start›
Depress the clutch pedal.
The automatic re-start process takes place and the indicator symbol
goes
out.
Operation in vehicles with automatic gearbox
Read and observe
on page 158 first.
In compliance with the operating conditions, automatic engine shutdown / au-
tomatic engine start takes place as described.
Automatic engine shutdown
›
Bring the vehicle to a stop and depress the brake pedal.
Automatic engine shutdown then occurs and the indicator symbol appears in
the display
» Fig. 156 on page 158 .
Automatic engine start
›
Release the brake pedal.
The automatic re-start process takes place and the indicator symbol goes
out.
Further information on automatic transmission
Engine shut down takes place when the selector lever is in positions P, D/S , N
and in Tiptronic mode.
When the selector lever is in position P the engine remains shut down after
you release the brake pedal. The engine starts automatically by pressing the
gas pedal or by moving the selector lever into a different mode and releasing
the brake pedal.
If the engine is off due to the automatic and the selector lever is put to the R
position then the automatic starts the engine.
If the gear selector is moved from position R to the position D/S or N the vehi-
cle must reach a speed of more than 10 km / h before the automatic engine
shutdown starts.
There is no automatic engine shutdown when the system detects a vehicle
moving due to a large steering angle.
No automatic engine shutdown takes place when the vehicle is moving at low
speed (e.g. during a traffic jam or when tuning) and remains stationary after
pressing the brake pedal lightly. Automatic engine shutdown takes place if you
press the brake pedal down with more force.
System related automatic start-up
Read and observe
on page 158 first.
When the engine is off, the system can automatically start the engine beforethe desired journey continues. Some possible reasons for this are:
› The vehicle begins to roll, e.g. on a slope.
› The brake pedal has been actuated several times.
› The current consumption is too high.
Manually deactivating/activating the system
Fig. 157
Button for the START-STOP sys-
tem
Read and observe on page 158 first.
Deactivating/activating
›
Press the symbol button
» Fig. 157 .
When start-stop mode is deactivated, the warning light in the button lights up.
Note
■ If the system is deactivated when the engine is turned off automatically,
then the automatic start process takes place.■
Selecting the driving mode Eco when the system is deactivated will automat-
ically activate the system » page 160, Selection of travel mode (Driving Mode
Selection) .
159Assist systems
Information messagesRead and observe
on page 158 first.
The information messages are shown in the instrument cluster display. Start the engine manually!
START MANUALLY
One of the conditions for automatic engine start is not satisfied or the driver's
seat belt is not fastened. The engine must be started manually.
On vehicles with the starter button, the ignition is turned off by the first press of the starter button; the start process is only initiated when the button is
pressed for the second time.
Error: start-stop system
START STOP ERROR
A system error is present. Seek help from a specialist garage.
Selection of travel mode (Driving Mode Selection)
Introduction
This chapter contains information on the following subjects:
Selection
160
Normal Mode
160
Sportmode
160
Ecomode
161
Individualmode
161
By selecting the driving mode, the driving behavior can be adapted to the de-
sired mode of operation.
The following modes of Normal, Sport, Eco, Individual are available.
The set driving mode remains stored even after switching the ignition on and
off.
WARNING■ The system only serves to support and does not relieve the driver of the
responsibility for the vehicle operation.■
Adjust the speed and driving style to the current visibility, weather, road
and traffic conditions.
SelectionFig. 158
Button for selecting the driving mode: Version 1/version 2
Read and observe
on page 160 first.
›
Press the symbol button or
» Fig. 158 .
The menu is displayed on the infotainment screen.
The mode is changed by repeatedly pressing the symbol button or
or in
the Infotainment display » Infotainment operating instructions , chapter Vehi-
cle settings .
If a driving mode other than Normal is selected, then the symbol lights up on
the button or
» Fig. 158 .
WARNINGSetting the driving mode while driving can distract you from other traffic –
risk of accident.
Normal Mode
Read and observe
on page 160 first.
This mode is suitable for common everyday use.
SportmodeRead and observe
on page 160 first.
This mode is suitable for a sporty driving style.
Selecting this mode primarily affects the function of the following systems.
160Driving
WARNING■The system only serves to support and does not relieve the driver of the
responsibility for the vehicle operation.■
Lane Assist can help you keep the vehicle within the lane. However, it
does not steer the vehicle for you. The driver retains full responsibility for
steering at all times.
■
Some objects on the road may be incorrectly detected as lines. As a re-
sult, an incorrect steering intervention may take place.
WARNINGThe detection capability of the camera may be limited by various external
influences. In such cases, the assistant may not detect the line between
two lanes at all or not properly. The detection capability of the camera may
be restricted in the following situations, for example.■
When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
■
When driving around “sharp” bends.
■
The camera is blinded by the sun.
■
The camera is blinded by the oncoming traffic.
■
The viewing range of the camera is impeded by a vehicle traveling ahead.
■
The camera viewing range is obstructed by an obstacle.
CAUTION
Do not attach any stickers or similar objects to the windscreen to avoid impair-
ing the functions of the Assist system.
Note
■ The system is designed for driving on motorways and roads with adequate
longitudinal markings.■
The system can detect both continuous and broken lines.
OperationFig. 160
Monochromatic display of the instrument cluster: Examples of
system indications
Fig. 161
Colour display of the instrument cluster: Examples of system in-
dications
Read and observe
and on page 163 first.
System displays » Fig. 160 » Fig. 161
The system is active, but not ready to intervene.
The system is active and ready to intervene.
The system intervenes when approaching the right-hand boundary lane.
Adaptive lane assist ensues (boundary lines on both sides of the vehicle
detected).
The system can intervene when the following basic conditions are present. The system is activated.
The vehicle is travelling at more than 65 km/h.
ABCD163Assist systems
The boundary lines are clearly visible (appropriate longitudinal markings).
The boundary line of at least one side of the lane is detected.
The driver's hands are on the steering wheel.
The lane is more than 2.5 m in width.
If the turn signal is switched on prior to driving over the boundary line (e.g.
when making a turn), no steering intervention takes place when the vehicle
approaches the boundary line. The system regards the situation as an inten-
ded lane change.
Warning lights in the instrument clusterWarning lightMeaningThe system is active, but not ready to intervene.The system is active and ready to intervene or is currently
intervening.
Adaptive lane assist
Adaptive lane assist helps to keep the vehicle in the position between the
boundary lines selected by the driver, by means of steering intervention.
If the system detects only one boundary line, it will help to maintain the selec-
ted proximity from said boundary line.
If the proximity to the detected boundary line is changed, the system quickly
adapts and maintains the newly-selected position.
WARNINGThe function of adaptive lane guidance Assist system may be restricted
when driving e.g. over rutted roads, on a slope, or if there are lateral winds.
Activating/deactivating
Read and observe
and on page 163 first.
The activation or deactivation of the system can be carried out in one of two
ways.
› In the
Assist systems menu item in the instrument cluster display » page 51,
Menu item wizard .
› In Infotainment
» Infotainment operating instructions , chapter Vehicle set-
tings (CAR button) .
Adaptive tracking can also be enabled or disabled In Infotainment.
Information messages
Read and observe
and on page 163 first.
The information messages are shown in the instrument cluster display. Lane Assist not available. No sensor view.
The windscreen is dirty, iced over or misted up in the camera viewing range.
Clean the windscreen or remove the obstacles.
Lane Assist currently not available.
The system has limited functionality due to a temporary error. Try to re-acti-
vate the machine.
Error: Lane Assist
There is a system error. Seek help from a specialist garage. Lane Assist: Take over steering!
The system has detected that there are no hands on the steering wheel. In
this case, the Assist system is not ready to intervene. Place your hands on the
steering wheel.
Traffic sign recognition
Introduction
This chapter contains information on the following subjects:
Function
165
Additional display
166
Traffic sign display when towing a trailer
166
Information messages
166
The traffic sign recognition system (hereinafter referred to only as system)
shows certain traffic signs on the display of the instrument cluster.
WARNING■ The system only serves to support and does not relieve the driver of the
responsibility for the vehicle operation.■
Vertical traffic signs must always take precedence over the traffic signs
shown in the display. The driver is always responsible for correctly assess-
ing the traffic situation.
164Driving
WARNING (Continued)■Traffic signs may not be recognised at all by the system, or may be recog-
nised incorrectly. As a result, the traffic signs may not be displayed at all, or
the wrong one may appear.■
On the system side, only a traffic sign display is undertaken, neither a
warning when limit is exceeded or driving speed adjustment is undertaken!
■
The speed information in the displayed road signs refer to the country-
specific speed units. For example, the notification
in the display may
therefore refer to km/h or mph, depending on the country.
Note
The system is only available in some countries.
Function
Fig. 162
Camera viewing range for traffic
sign recognition
Fig. 163
Instrument cluster display: Examples of system indications
Read and observe on page 164 first.
System displays » Fig. 163
Display of detected traffic signs
Additional display (monochromatic display)
Additional display (color display)
The detected traffic signs are indicated in the display of the instrument clus-
ter » page 47 , Driving data (Multifunction display) .
■ Driving data
■ Road sign
The system can display in the display the following recognized traffic sign.
› Speed limit
› Overtaking prohibited.
Additional signs, such as 'when wet' or signs which only apply for a limited
time can also be displayed.
The system works on the basis of the data captured by the camera and is only
able to show traffic signs which are in the camera's “viewing range” » Fig. 162.
Data from the camera can be supplemented by information from the Infotain-
ment Navigation. This is the reason why traffic signs with maximum speeds
can also be shown on sections of roads which do not have any traffic signs.
The system may not be available or may only be available to a limited extent
in the following situations.
› Poor visibility conditions, e.g. fog, heavy rain, thick snowfall.
› The camera is blinded by the sun.
› The camera is blinded by the oncoming traffic.
› The camera “viewing range” is obstructed by an obstacle.
› Travelling at high speed.
› The traffic signs are fully or partially obscured (e.g. by trees, snow, dirt or
other vehicles).
› The traffic signs are not standard (round with a red border).
› The traffic signs are damaged or bent.
› The traffic signs are attached to flashing neon signs.
› The traffic signs were changed (the navigation data are out of date).
ABC165Assist systems
Additional displayRead and observe
on page 164 first.
If the menu item Road sign is currently not shown » Fig. 163 on page 165 -
,
the road sign with the speed limit will appear in the upper display area of the
instrument cluster » Fig. 163 on page 165 -
,
.
If several traffic signs are detected simultaneously, the next traffic sign will al- so in some cases be displayed in the colour display -
. All detected traffic
signs can be displayed in the menu item Road sign -
.
The additional display traffic sign detection can be activated/deactivated in
the Infotainment » operating instructions for Infotainment , chapter Vehicle
settings (CAR button) .
Traffic sign display when towing a trailer
Read and observe
on page 164 first.
When towing a trailer, displaying the traffic signs which apply when towing atrailer can be activated.
The traffic sign detection display when towing a trailer can be activated/deac-
tivated in the Infotainment » operating instructions for Infotainment , chap-
ter Vehicle settings (CAR button) .
Information messages
Read and observe
on page 164 first.
The information messages are shown in the instrument cluster display. No road signs available.
No maximum speeds were recognised (e.g. on German motorways where there
is no speed limit).
Error: Dynamic Road Sign Display
There is a system error. Seek help from a specialist garage. Dynamic Road Sign Display clean windscreen!
The windscreen is dirty, iced over or misted up in the camera viewing range.
Clean the windscreen or remove the obstacles.
Dynamic Road Sign Display currently restricted.
Infotainment Navigation is not currently providing any data. Check whether
the maps are up-to-date or the whether the vehicle is currently in a location
for which no navigation data are available.
Fatigue detection (break recommendation)
Introduction
This chapter contains information on the following subjects:
Function
166
Information messages
167
The fatigue detection system (hereinafter referred to only as system) recom-
mends the driver taking a break from driving when, because of the driver's
steering behavior, driver fatigue can be detected.
WARNING■ For the driving ability is always the driver's responsibility. Never drive if
you feel tired.■
The system may not detect all cases where a break is needed.
■
Therefore, take regular, sufficient breaks during long trips.
■
There will be no system warning during the so-called micro-sleep.
Note
■ In some situations, the system may evaluate the driving incorrectly and thus
mistakenly recommend a break (e.g. sporty driving, adverse weather condi-
tions or poor road conditions).■
The system is designed primarily for use on motorways.
Function
Read and observe
on page 166 first.
From the start of the journey, the system evaluates steering behavior. If, while
driving, there have been changes in the steering behaviours that are evaluated
by the system as indicating possible fatigue, a break recommendation is is-
sued.
The system evaluates steering behavior and recommends a break at speeds of
65-200 km / h.
166Driving
The system detects a break from driving when one of the following condi-
tions is met.
› The vehicle is stopped and the ignition is turned off.
› The vehicle is stopped, the seat belt is taken off and the driver's door is
opened.
› The vehicle is stopped for more than 15 minutes.
If none of these conditions are met or if the driving style is not changed, the
system recommends a driving break again after 15 minutes.
The system can be activated/deactivated in the Infotainment » operating in-
structions for Infotainment , chapter Vehicle settings (CAR button) .
Information messages
Read and observe
on page 166 first.
The icon appears and the following message for a few seconds in the display
of the instrument cluster
Driver alert. Take a break!
DRIVER ALERT TAKE A BREAK
An audible signal is also emitted.
Tyre pressure monitoring
Introduction
This chapter contains information on the following subjects:
Saving tyre pressure values
167
Saving tyre pressure values and infotainment display
168
Saving tyre pressure values by pressing a button
168
The tyre pressure monitoring function (hereinafter referred to simply as the
system) monitors the tyre pressure while driving.
If the tyre inflation pressure changes, the warning light lights up in the in-
strument cluster and an audible signal is heard.
Information on the procedure for the notification of a change in tyre inflation
pressure » page 39 .
The system can only function properly if the tyres have the prescribed inflation
pressure and these pressure values are stored in the system.
WARNING■ Having the correct tyre inflation pressure is always the driver's responsi-
bility. Tyre inflation pressure must be checked regularly » page 204.■
The system cannot warn in case of very rapid tyre inflation pressure loss,
e.g. in case of sudden tyre damage.
Saving tyre pressure values
Read and observe
on page 167 first.
The tyre pressure values are always stored in the system if one of the follow-ing events occurs.
› Change of tyre inflation pressure.
› Change one or more wheels.
› Change in position of a wheel on the vehicle.
› The warning light
lights up in the instrument cluster.
Depending on the vehicle equipment, the tyre pressure values are stored ei-
ther in Infotainment or by pressing a button.
WARNINGBefore storing the pressure values, the tyres must be inflated to the speci-
fied inflation pressure » page 204. If incorrect pressure values are saved,
the system may also not issue a warning even if the tyre inflation pressure
is too low.l
CAUTION
The tyre pressure values must be saved every 10,000 km or once annually in
order to ensure correct system functioning.167Assist systems
Saving tyre pressure values and infotainment displayFig. 164
Button for storing the pressure
values /example of the display:
the system is indicating a change
in tyre pressure in the rear right-
hand tyre
Read and observe on page 167 first.
›
Inflate all tyres to the prescribed pressure.
›
Switch on the ignition.
›
Infotainment switches on.
›
Press the button
→
→ Vehicle status .
›
Using the function keys,
select the menu item
Tyre Press. Loss Indicator .
›
Press the
SET » Fig. 164 button.
Follow the instructions that appear on the display.
A message in the display provides information about the storage of the tyre
pressure values.
Note
When warning light lights up in the instrument cluster, the affected tyre can
be displayed in Infotainment » Fig. 164.
Saving tyre pressure values by pressing a button
Fig. 165
Button for storing the pressure
values
Read and observe on page 167 first.›
Inflate all tyres to the prescribed pressure.
›
Switch on the ignition.
›
Press and hold
» Fig. 165 the symbol key.
The warning light
lights up in the instrument cluster.
An acoustic signal sounds and the warning light goes out - this indicates that the tyre pressure values have been saved.
›
Release the symbol key
the symbol key
168Driving