The radio-ready state remains active if, for ex‐
ample, the ignition is automatically switched
off for the following reasons:▷Opening or closing the driver's door.▷Unfastening of the driver's safety belt.▷When automatically switching from low
beams to parking lights.
If the engine is switched off and the ignition is
switched on, the system automatically
switches to the radio-ready state if the lights
are turned off or, if correspondingly equipped,
the daytime running lights are activated.
Starting the engine
Information DANGER
If the exhaust pipe is blocked or ventila‐
tion is insufficient, harmful exhaust gases can
enter into the vehicle. The exhaust gases con‐
tain carbon monoxide, an odorless and color‐
less but highly toxic gas. In enclosed areas, ex‐
haust gases can also accumulate outside of
the vehicle. There is danger to life. Keep the
exhaust pipe free and ensure sufficient ventila‐
tion.◀
WARNING
An unsecured vehicle can begin to move
and possibly roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:
▷Set the parking brake.▷On uphill grades or on a downhill slope,
turn the front wheels in the direction of the
curb.▷On uphill grades or on a downhill slope,
also secure the vehicle, e.g., with a wheel
chock.◀ATTENTION
In the case of repeated starting attempts
or repeated starting in quick succession, the
fuel is not burned or is inadequately burned.
The catalytic converter can overheat. There is
a risk of damage to property. Avoid repeated
starting in quick succession.◀
Steptronic transmission
Starting the engine1.Depress the brake pedal.2.Press the Start/Stop button.
The ignition is activated automatically for a
certain time and is stopped as soon as the en‐
gine starts.
Engine stop
Information WARNING
Unattended children or animals can
cause the vehicle to move and endanger them‐
selves and traffic, e.g., due to the following ac‐
tions:
▷Pressing the Start/Stop button.▷Releasing the parking brake.▷Opening and closing the doors or win‐
dows.▷Engaging selector lever position N.▷Using vehicle equipment.
There is risk of accidents or injuries. Do not
leave children or animals unattended in the ve‐
hicle. Take the remote control with you when
exiting and lock the vehicle.◀
WARNING
An unsecured vehicle can begin to move
and possibly roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
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In order to ensure that the vehicle is secured
against rolling away, observe the following:▷Set the parking brake.▷On uphill grades or on a downhill slope,
turn the front wheels in the direction of the
curb.▷On uphill grades or on a downhill slope,
also secure the vehicle, e.g., with a wheel
chock.◀
Before driving into a car wash
So that the vehicle can roll into a car wash ob‐
serve instructions for going into an automatic
car wash, refer to page 239.
Steptronic transmission
Switching off the engine
1.Engage selector lever position P with the
vehicle stopped.2.Press the Start/Stop button.
The engine is switched off.
The radio-ready state is switched on.3.Set the parking brake.
Auto Start/Stop function
The concept The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for example, in traffic congestion or at
traffic lights. The ignition remains switched on.
The engine starts automatically for driving off.
Information After every start of the engine using the Start/
Stop button, the Auto Start/Stop function is in
the last selected state. When the Auto Start/
Stop function is active, it is available when the
vehicle is traveling faster than about 3 mph,
approx. 5 km/h.
Engine stop
The engine is switched off automatically dur‐
ing a stop under the following conditions:
Steptronic transmission:▷The selector lever is in selector lever posi‐
tion D.▷The brake pedal remains pressed while the
vehicle is stationary or the vehicle is held
by Automatic Hold.▷The driver's safety belt is buckled or the
driver's door is closed.
The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster The display indicates that the
Auto Start/Stop function is
ready for an Automatic engine
start.
The display indicates that the conditions for an automatic en‐
gine stop have not been met.
Functional limitations The 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 temper‐
ature.▷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.Seite 68ControlsDriving68
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▷Vehicle battery is heavily discharged.▷At higher elevations.▷The engine compartment lid is unlocked.▷HDC Hill Descent Control is activated.▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever in selector lever position N,
M/S or R.▷Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷Steptronic transmission: by releasing the
brake pedal.
When Automatic Hold is activated: press
the accelerator 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.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷Vehicle battery is heavily discharged.▷Excessive cooling of the car's interior when
the heating is switched on.
Activating/deactivating the system
manually
Using the button
Press button.
▷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.
Steptronic transmission:
1.Press the Start/Stop button. The ignition is
switched off. The Auto Start/Stop function
is deactivated.
Selector lever position P is engaged auto‐
matically.2.Set the parking brake.
Engine start as usual via Start/Stop button.
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Releasing
With the ignition switched on:
Steptronic transmission: press the
switch while the brake is pressed or se‐
lector lever position P is set.
The LED and indicator lamp go out.
The parking brake is released.
Automatic release in cars with
Steptronic transmission
For automatic release, step on the accelerator
pedal.
The LED and indicator lamp go out.
The parking brake is automatically released
when you step on the accelerator:▷Engine on.▷Drive mode engaged.▷Driver buckled in and doors closed.
Automatic Hold
The concept This system assists the driver by automatically
setting and releasing the brake, such as when
moving in stop-and-go traffic.
The vehicle is automatically held in place when
it is stationary.
On inclines, the system prevents the vehicle
from rolling backward when driving off.
Overview
Automatic Hold
Safety information WARNING
An unsecured vehicle can begin to move
and possibly roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:▷Set the parking brake.▷On uphill grades or on a downhill slope,
turn the front wheels in the direction of the
curb.▷On uphill grades or on a downhill slope,
also secure the vehicle, e.g., with a wheel
chock.◀
Under the following conditions, Automatic
Hold is automatically deactivated and the park‐
ing brake is set:
▷The engine is switched off.▷A door is opened and driver's safety belt is
unbuckled while the vehicle is stationary.▷The moving vehicle is brought to a stand‐
still using the parking brake.
The indicator lamp switches from
green to red and the letters AUTO H go out.
Activating
This function can be activated when the driv‐
er's door is closed, the safety belt is fastened
and the engine is running.
Press button.
The LED and the letters AUTO H light
up.
The indicator lamp lights up.
Automatic Hold is activated.
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Steptronic transmission
Information WARNING
An unsecured vehicle can begin to move
and possibly roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:▷Set the parking brake.▷On uphill grades or on a downhill slope,
turn the front wheels in the direction of the
curb.▷On uphill grades or on a downhill slope,
also secure the vehicle, e.g., with a wheel
chock.◀
Selector lever positions
D Drive
Selector lever position for normal vehicle oper‐
ation. All gears for forward travel are activated
automatically.
R Reverse Select only when the vehicle is stationary.
N Neutral
The vehicle may roll in selector lever posi‐
tion N, e.g. in car washes.
When the ignition is switched off, refer to
page 66, selector lever position P is engaged
automatically.
P Park Select only when the vehicle is stationary. The
drive wheels are blocked.
Selector lever position P is engaged automati‐
cally in the following situations:
▷After the engine is switched off when the
vehicle is in radio-ready state, refer topage 66, or when the ignition is switched
off, refer to page 66, and when selector
lever position R or D is set.▷With the ignition off, if selector lever posi‐
tion N is engaged.▷If the driver's safety belt is unbuckled, the
driver's door is opened, and the brake
pedal is not pressed while the vehicle is
stationary and selector lever position D
or R is engaged.
Kickdown
Kickdown is used to achieve maximum driving
performance. Step on the accelerator pedal
beyond the resistance point at the full throttle
position.
Engaging selector lever positions General information To prevent the vehicle from creeping after you
select a gear, maintain pressure on the brake
pedal until you are ready to start.
▷It is not possible to shift out of selector
lever position P until the engine is running
and the brake is applied.▷With the vehicle stationary, depress the
brake pedal before shifting out of selector
lever position P or N; otherwise, the shift
block will not be deactivated and the shift
command will not be executed.
Selector lever lock
A lock prevents the inadvertent switching to
selector lever position R or the inadvertent
change from selector lever position P.
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Cancelling the lock: Press unlock button, ar‐
row.
Engaging selector lever position D, N,
R
Briefly tap the selector lever in the desired di‐
rection, beyond a resistance point if needed.
After releasing the selector lever, it returns to
its center position.
Engage selector lever position P
Press P button, arrow.
Sport program and manual mode
Activating the sport program
Press the selector lever to the left out of selec‐
tor lever position D.
The engaged gear is displayed in the instru‐
ment cluster, for example, S1.
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
selector lever position D.2.Push the selector lever forward or pull it
backward.
Manual mode M/S becomes active and the
gear is changed.
The engaged gear is displayed in the instru‐
ment cluster, for example, M1.
If the situation requires, the Steptronic trans‐
mission continues to shift automatically.
Example: once maximum engine speed is at‐
tained, M/S manual mode is automatically up‐
shifted 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 and when necessary due to
the temperature of the drivetrain, for example,
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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 currently se‐
lected gear.
Steptronic Sport transmission: avoid automatic upshifting in M/S manual
mode
The Steptronic Sport transmission does not
automatically upshift in M/S manual mode
once the maximum speed is reached, if one of
the following conditions is met:▷DSC deactivated.▷TRACTION activated.▷SPORT+ activated.
In addition, there is no downshifting for kick‐
down.
Ending the sport program/manual
mode
Push the selector lever to the right.
D is displayed in the instrument cluster.
Shift paddles
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.
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 switches to manual mode tempo‐
rarily in selector lever position D and perma‐
nently in selector lever position S.
In selector lever position D, after conservative
driving for a certain amount of time in manual
mode 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, for example: P.
Electronic unlocking of the
transmission lock
General information
Electronically unlock the transmission lock to
maneuver vehicle from the danger area.
Unlocking is possible, if the starter can spin the
engine.
Before unlocking the transmission lock, apply
the parking brake to prevent the vehicle from
rolling away.
Engaging selector lever position N1.Press and hold down brake pedal.2.Press the Start/Stop button. The starter
must audibly start.3.Press the unlock button on the selector
lever, see arrow 1, and press and hold the
selector lever into selector lever position N,
see arrow N.Seite 79DrivingControls79
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7Onboard computer 948Reset miles 89Switching the change of display on
and off
You can set whether the instrument display
automatically changes to the ECO PRO or
SPORT in the display when you switch driving
modes.
On the Control Display:1."Settings"2."Instrument cluster"3."ECO PRO Info"Or "Driving mode view"
With Professional Navigation System:
switching zoom function on/off
You can program whether the current speed is
to appear enlarged in the speedometer.
On the Control Display:
1."Settings"2."Instrument cluster"3."Magnifier function"
ECO PRO displays
1Speedometer2Variable displays: ECO PRO Tips, Deceler‐
ation assistant instructions, Driver assist
system displays3Efficiency display 1914Transmission display5▷Blue: bonus range▷Gray: rangeIn the ECO PRO program the instrument dis‐
play switches to the ECO PRO displays. Thesedisplays support a driving style that saves on
fuel consumption with more prominent repre‐Seite 83DisplaysControls83
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