
Functional limitationsThe engine is not switched off automatically in
the following situations:▷External temperature too low.▷The external temperature is high and auto‐
matic climate control is running.▷The car's interior has not yet been heated
or cooled to the required level.▷The engine is not yet at operating tempera‐
ture.▷The wheels are at a sharp angle or the
steering wheel is being turned.▷After driving in reverse.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷The vehicle battery charge is very low.▷At higher elevations.▷The engine compartment lid is unlocked.▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever in selector lever position R, N
or M/S.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷Manual transmission:
The clutch pedal is pressed.▷Steptronic transmission:
By releasing the brake pedal.
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it
will not start again automatically if any one of
the following conditions are met.
▷The driver's safety belt is unbuckled and
the driver's door is open.▷The hood was unlocked.Some indicator lights light up for a varied
length of time.
The engine can only be started via the Start/
Stop button.
Functional limitations
Even if driving off was not intended, the deacti‐
vated engine starts up automatically in the fol‐
lowing situations:▷Excessive warming of the car's interior
when the cooling function is switched on.▷The steering wheel is turned.▷Steptronic transmission: change from selec‐
tor lever position D to R, N or M/S.▷Steptronic transmission: change from selec‐
tor lever position P to R, N, D or M/S.▷The vehicle begins rolling.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷The vehicle battery charge is very low.▷Excessive cooling of the car's interior when
the heating is switched on.▷Manual transmission: low brake vacuum
pressure; this can occur, e.g., if the brake
pedal is depressed a number of times in
succession.
Switching the system on/off
Using the button
Press button.
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▷LED comes on: Auto Start/Stop function is
deactivated.
The engine is started during an automatic
engine stop.
The engine can only be stopped or started
via the Start/Stop button.▷LED goes out: Auto Start/Stop function is
activated.
Switching off the vehicle during an automatic engine stop
During an automatic engine stop, the vehicle
can be switched off permanently, e. g., when
leaving it.
1.Steptronic transmission: engage selector
lever position P.2.Press the Start/Stop button. The ignition is
switched off. The Auto Start/Stop function is
deactivated.3.Manual transmission: shift into first gear or
reverse.4.Set the parking brake.
Engine start as usual via Start/Stop button.
Automatic deactivation
In certain situations, Auto Start/Stop function is
deactivated automatically for safety reasons as
if the driver were absent.
MalfunctionThe Auto Start/Stop function no longer switches
off the engine automatically. A Check Control
message is displayed. It is possible to continue
driving. Have the system checked.
Parking brake ApplyingThe lever automatically engages after being
pulled up.
The indicator lamp lights up red. The
parking brake is set.
Lower lamp: indicator lamp in Canadian
models
Releasing
Raise lever slightly, press the button and guide
the lever down.
Hints Use while driving
On rare occasions if it is necessary to use
the parking brake while driving, do not use ex‐
cessive force when applying it. When using it,
keep the button on the lever depressed.
Otherwise, using excessive force when applying
the parking brake may cause the rear wheels to
lock, resulting in fishtailing. ◀
To prevent corrosion and one-sided brake ac‐
tion, lightly apply the parking brake periodically
while coasting, if traffic conditions permit.
The brake lights will not light up if the parking
brake is set.
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KickdownKickdown is used to achieve maximum driving
performance. Step on the accelerator pedal be‐
yond the resistance point at the full throttle po‐
sition.
Engaging a selector lever position Press on the brake pedal until you start
driving
To prevent the vehicle from creeping after you
select a gear, maintain pressure on the brake
pedal until you are ready to start. ◀
The selector lever can only be taken out of se‐
lector lever position P if the ignition is on or the
engine is running.
With the vehicle is stationary, press on the
brake pedal before shifting out of selector lever
position P or N; otherwise, the selector lever is
blocked: shift lock.
A lock prevents inadvertent shifting into selec‐
tor lever position P or R.
Canceling the lock
Press button on the front of the selector lever,
arrow.
Sport program and manual mode M/S
Activating the sport program
Press the selector lever to the left out of selec‐
tor lever position D.
The engaged selector lever position, such as S1,
is displayed in the instrument cluster.
The sport program of the transmission is acti‐
vated.
Activating the M/S manual mode
1.Press the selector lever to the left out of se‐
lector lever position D.2.Push the selector lever forward or back‐
ward.
Manual mode becomes active and the selector
lever position is changed.
The engaged selector lever position is displayed
in the instrument cluster, for instance M1.
Once maximum engine speed is attained, M/S
manual mode is automatically upshifted as
needed.
Switching to manual mode
▷To shift down: press the selector lever for‐
ward.▷To shift up: pull the selector lever rear‐
wards.
Gears will only be shifted at appropriate engine
and road speeds, for example downshifting is
not possible if the engine speed is too high.
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The selected gear is briefly displayed in the in‐
strument cluster, followed by the currently se‐
lected gear.
Manual mode M/S: prevent automatic
upshifting
Once maximum engine speed is attained, M/S
manual mode is automatically upshifted as
needed.
For vehicles with Steptronic Sport transmission,
automatic shift operations are not performed if
one of the following conditions is met:▷DSC is deactivated.▷TRACTION is activated.
In addition, the kickdown is deactivated.
With the respective transmission version, the
lowest possible gear can be selected by simul‐
taneously operating the kickdown and the left
shift paddle. However, this effect is not pro‐
duced via the shift paddles when switching
briefly from D to manual mode.
Ending the sport program/manual
mode
Push the selector lever to the right.
D is displayed in the instrument cluster.
Shift paddles for Steptronic Sport
transmission
The shift paddles on the steering wheel allow
you to shift gears quickly while keeping both
hands on the steering wheel.
▷Shift up: briefly pull right shift paddle.▷Shift down: briefly pull left shift paddle.▷With the respective transmission version,
the lowest possible gear can be selected by
pulling and holding the left shift paddle.
Gears will only be shifted at appropriate engine
and road speeds, for example downshifting is
not possible if the engine speed is too high.
The selected gear is briefly displayed in the in‐
strument cluster, followed by the current gear.
If the shift paddles on the steering wheel are
used to shift gears in automatic mode, the
transmission temporarily switches to manual
mode.
If the selector lever is still in selector lever posi‐
tion D with the respective transmission version,
it is possible to switch back into the automatic
mode:
▷Pull and hold right shift paddle.
Or▷In addition to the briefly pulled right shift
paddle, briefly pull the left shift paddle.
In the manual mode, after conservative driving
for a certain amount of time or if there has
been no acceleration or shifting of the shift
paddles within a certain amount of time, the
transmission switches back to automatic mode.
Displays in the instrument cluster The selector lever position is dis‐
played, e.g.: P.
Manually release the transmission lock Should the selector lever be blocked in selector
lever position P despite the ignition being
turned on, the brake being depressed and the
unlock button being pressed, the transmission
lock can be manually canceled:
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Before unlocking the transmission lock man‐
ually, engage the parking brake forcefully to
prevent the vehicle from rolling away.1.Loosen the sleeve of the selector lever.2.Pull the sleeve over the selector lever. Un‐
plug the cable connector if needed.3.Using the screwdriver from the onboard ve‐
hicle tool kit, refer to page 199, press the
yellow release lever downward, arrow.4.Move the selector lever slightly toward the
rear; to do this press the unlock button on
the front of the selector lever.
Release the release lever.5.Bring the selector lever into the desired po‐
sition.
Steptronic Sport transmission: Launch
Control
The concept
Launch Control enables optimum acceleration
on surfaces with good traction.
Hints Component wear
Do not use Launch Control too often; oth‐
erwise, this may result in premature wear of
components due to the high stress placed on
the vehicle. ◀
Do not use Launch Control during the break-in,
refer to page 134, period.
To increase vehicle stability, activate DSC again
as soon as possible.
An experienced driver may be able to achieve
better acceleration values in DSC OFF mode, re‐
fer to page 94.
Requirements Launch Control is available when the engine is
warmed up, that is, after uninterrupted driving
of at least 6 miles/10 km.
To start with Launch Control do not steer the
steering wheel.
Start with launch control
While the engine is running:1. Press button and select SPORT with
Driving Dynamics Control, refer to
page 96.
The instrument cluster displays TRACTION
in combination with SPORT. The DSC OFF
indicator lamp lights up.2.Engage selector lever position S.3.With the left foot, forcefully press down on
the brake.4.Step on the accelerator pedal beyond the
resistance point at the full throttle position.
A flag symbol is displayed in the instrument
cluster.5.The starting engine speed adjusts. Within
3 seconds, release the brake.
Before using Launch Control, allow the trans‐
mission to cool down for approx. 5 minutes.
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be activated if objects are placed on the front
passenger seat.
Make sure that the safety belts are positioned
correctly.
Airbag system Airbag system and belt tensioner are
defective.
Have the vehicle checked by the service
center immediately.
Parking brake, brake system The parking brake is set.
For additional information, refer to Re‐
lease parking brake, refer to page 51.
Front-end collision warning Illuminated: advance warning is issued,
e.g., when there is the impending dan‐
ger of a collision or the distance to the
vehicle ahead is too small.
Increase distance.
Flashing: acute warning of the imminent dan‐
ger of a collision when the vehicle approaches
another vehicle at a relatively high differential
speed.
Intervention by braking or make an evasive
maneuver.
Pedestrian warning If a collision with a person detected in
this way is imminent, the symbol lights
up and a signal sounds.Orange lights
Active Cruise Control The number bars shows the selected
distance from the vehicle driving ahead.
For more information, see Camera-
based cruise control, ACC, refer to page 98.
Vehicle detection, Active Cruise Control Illuminated: vehicle driving ahead de‐
tected.
Flashing: the conditions are not ade‐
quate for operating the system.
The system was deactivated but applies the
brakes until you actively resume control by
pressing on the brake pedal or accelerator
pedal.
Yellow lights Anti-lock Braking System ABS Avoid abrupt braking if possible. Brak‐
ing force boost in some cases defective.
Stop carefully. Take into account longer
brake travel. Have this checked by the
service center immediately.
DSC Dynamic Stability Control Flashing: DSC controls the drive and
braking forces. The vehicle is stabilized.
Reduce speed and adapt driving profile
to the driving circumstances.
Illuminated: DSC failed. Have the system
checked by the service center.
For additional information, refer to Dynamic
Stability Control DSC, refer to page 94.Seite 61DisplaysCONTROLS61
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Be alert
Due to system limitations, warnings may
be not issued at all, or may be issued late or im‐
properly. Therefore, always be alert and ready
to intervene; otherwise, there is the risk of an
accident. ◀
Tow-starting and towing
For towing the vehicle turn, switch off the
Intelligent Safety systems; otherwise malfunc‐
tions of the individual braking systems might
lead to accidents. ◀
At a glance
Button in the vehicle
Intelligent Safety button
Switching on/off Some Intelligent Safety systems are automati‐
cally active after every departure. Some Intelli‐
gent Safety systems activate according to the
last setting.
Press button briefly:
▷The menu for the intelligent safety
system is displayed. The systems
are individually switched off ac‐
cording to their respective settings.▷LED lights up orange or goes out respective
to their individual settings.
Adjust as needed. Individual settings are stored
for the profile currently in use.
Press button again:▷All Intelligent Safety systems are
activated.▷The LED lights up green.
Hold down button:
▷All Intelligent Safety systems are
turned off.▷The LED goes out.
Front-end collision
warning with City Brak‐
ing function
The concept
The ystem can help prevent accidents. If an ac‐
cident cannot be prevented, the system will
help reduce the collision speed.
The system sounds a warning before an immi‐
nent collision and actuates brakes independ‐
ently if needed.
The automatic braking intervention is done
with limited force and duration.
The system is controlled via a camera in the
base of the mirror.
The front-end collision warning is available
even if cruise control has been deactivated.
With the vehicle approaching another vehicle
intentionally the collision warning is delayed
avoiding false alarm.
General information
The system warns at two levels of an imminent
danger of collision at speeds from approx.
3 mph/5 km/h. Time of warnings may vary with
the current driving situation.
Appropriate braking kicks in at speeds of up to
35 mph/60 km/h.
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▷LED lights up orange or goes out respective
to their individual settings.
Adjust as needed. Individual settings are stored
for the profile currently in use.
Press button again:
▷All Intelligent Safety systems are
activated.▷The LED lights up green.
Hold down button:
▷All Intelligent Safety systems are
turned off.▷The LED goes out.
Setting the warning time
The warning time can be set on the radio.
1.Intelligent Safety button
The intelligent safety menu is displayed for
a brief time on the radio display.2."Front. Coll. Warn."3."Warning time"4.Setting the desired warning time
The selected warning time is stored for the pro‐
file currently in use.
Warning with braking function
Display
If a collision with a vehicle detected in this way
is imminent, a warning symbol appears on the
instrument cluster.
SymbolMeasureThe vehicle lights up red: prewarning.
Brake and increase distance.The vehicle flashes red and an acous‐
tic signal sounds: acute warning.
You are requested to intervene by
braking or make an evasive maneu‐
ver.Prewarning
This warning is issued, e.g., when there is the
impending danger of a collision or the distance
to the vehicle ahead is too small.
The driver must intervene actively when there
is a prewarning.
Acute warning with braking function
Warning of the imminent danger of a collision
when the vehicle approaches another object at
a relatively high differential speed.
The driver must intervene actively when there
is an acute warning. If necessary, the driver is
assisted by a minor automatic braking inter‐
vention in a possible risk of collision.
Acute warnings can also be triggered without
previous prewarning.
Braking intervention
The warning prompts the driver himself/herself
to react. During a warning, the maximum brak‐
ing force is used. Premise for the brake booster
is sufficiently quick and sufficiently hard step‐
ping on the brake pedal. The system can assist
with some braking intervention if there is risk of
a collision. At low speeds vehicles may thus come to a complete stop.
Manual transmission: During a braking inter‐
vention up to a complete stop, the engine may
be shut down.
The braking intervention is executed only if DSC Dynamic Stability Control is switched on.
The braking intervention can be interrupted by
stepping on the accelerator pedal or by actively
moving the steering wheel.
Object detection can be restricted. Limitations
of the detection range and functional restric‐
tions are to be considered.
System limits
Detection range The system's detection potential is limited.Seite 89SafetyCONTROLS89
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