Key positions with the Start/Stop button
:
Start/Stop button
; Ignition lock
When you switch on the ignition, all the indicator lamps on the instrument cluster light up. For
warning and indicator lamps, see (Y page 280).
If Start/Stop button :has not yet been
pressed, this is the same as the key having been removed.
X To switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now
activate the windscreen wipers, for example.
The power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button :twice when in
this position
X To switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
The ignition is switched off again if:
R you do not start the engine from this position
within 15 minutes
R you press Start/Stop button :once when in
this position
The power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button :once when in
this position
Removing the Start/Stop button
You can remove the Start/Stop button from the
ignition lock and start the vehicle as normal
using the key.
It is possible to switch between Start/Stop but- ton mode and key operation only when the
transmission is in position j.X
Remove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
key with you when leaving the vehicle. As long as
the key is in the vehicle:
R the vehicle can be started using the Start/
Stop button
R the electrically powered equipment can be
operated Starting the vehicle
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they can:
R open doors and endanger other persons or
road users
R climb out and be injured by the traffic
R operate vehicle equipment and, for exam-
ple, trap themselves.
Children could also set the vehicle in motion, for example by:
R releasing the parking brake
R shifting the automatic transmission out of
park position P
R starting the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. Always
keep the key out of reach of children. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation. Driving
145Driving and pa rking Z
G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
General notes Vehicles with a petrol engine:
the catalytic
converter is preheated for up to 30 seconds
after a cold start. The sound of the engine may
change during this time.
Automatic transmission X
Shift the transmission to position j
(Y page 154).
The transmission position indicator on the
multifunction display shows j
(Y page 155).
i You can start the engine in transmission
position jand i.
Starting procedure using the key To start the engine using the key instead of the
Start/Stop button, pull the Start/Stop button
out of the ignition lock.
X To start a diesel engine: turn the key to
position 2in the ignition lock (Y page 144).
The % preglow indicator lamp on the
instrument cluster lights up.
X Turn the key to position 3in the ignition lock
(Y page 144) and release it as soon as the
engine is running.
i Vehicles with a diesel engine:
you can
start the engine without preglow if the engine
is warm.
If the engine will not start:
X Remove the key from the ignition lock.
X Reinsert the key in the ignition lock after wait-
ing for a short period. X
Turn the key to position 2in the ignition lock
(Y page 144).
The indicator lamps on the instrument cluster
light up (Y page 280).
X Turn the key to position 3in the ignition lock
(Y page 144) and release it as soon as the
engine is running.
Starting procedure using the Start/
Stop button The Start/Stop button is available only on vehi-
cles with KEYLESS-GO or the KEYLESS-GO start
function.
The Start/Stop button can be used to start the
vehicle manually without inserting the key in the ignition lock. The key must be in the vehicle and
the Start/Stop button must be inserted in the
ignition lock. This mode for starting the engine
manually operates independently of the ECO
start/stop automatic engine start function.
You can start the engine if a valid key is in the
vehicle. Switch off the engine and always take
the key with you when leaving the vehicle, even
if you leave it for only a short time. Observe the important safety notes.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 144).
Vehicles with a petrol engine: the engine
starts.
Vehicles with a diesel engine: preglow is
activated and the engine starts. Pulling away
General notes G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pulling
away. 146
DrivingDriving and parking
R
you move the transmission out of position j
R you unfasten your seat belt or open the driv-
er's door
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
Shifting the transmission to position jdoes
not start the engine.
If you shift the transmission from ktoh, the
ECO start/stop function is available as soon as
the è ECO symbol appears on the multifunc-
tion display.
Switching the ECO start/stop function
off/on Mercedes-AMG vehicles
X
To switch off: press ECO button :.
Indicator lamp ;and the èorç ECO
symbol on the multifunction display go out.
X To switch on: press ECO button :.
Indicator lamp ;lights up.
If all conditions for automatic engine switch-
off (Y page 148) are fulfilled, the èECO
symbol is shown on the multifunction display.
If all conditions for automatic engine switch-
off (Y page 148) are not fulfilled, the ç
ECO symbol is shown on the multifunction
display. If this is the case, the ECO start/stop
function is not available.
If indicator lamp ;is off, the ECO start/stop
function has been switched off manually or as
the result of a malfunction. The engine will then not be switched off automatically when the vehi-
cle stops.
The ECO start/stop function is switched off if:
R you switch to drive program S+orS
(Y page 152)
R you permanently activate manual gearshifting
(Y page 158)
If you have permanently activated manual gear- shifting and then press ECO button :, the ECO
start/stop function is switched on.
All other models X
To switch off: press ECO button :.
Indicator lamp ;and the èorç ECO
symbol on the multifunction display go out.
X To switch on: press ECO button :.
Indicator lamp ;lights up. If all conditions
for automatic engine switch-off (Y page 148)
are fulfilled, the èECO symbol is shown
on the multifunction display.
If all conditions for automatic engine switch-
off (Y page 148) are not fulfilled, the ç
ECO symbol is shown on the multifunction
display. If this is the case, the ECO start/stop
function is not available.
If indicator lamp ;is off, the ECO start/stop
function has been switched off manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi- cle stops.
Selecting drive program S+switches off the
ECO start/stop function. If you press ECO but-
ton :, the ECO start/stop function is switched
on. Driving
149Driving and pa rking Z
AMG performance exhaust system
can be selected (Mercedes-AMG vehi-
cles)
You can choose between different AMG Per-
formance exhaust system volumes using the
position of the exhaust flap.
If the ignition is switched off for less than four
hours, the previously selected setting is activa-
ted when the engine is next started. If the igni-
tion is switched off for more than four hours, the quietest setting is activated when the engine is
next started. Setting the volume:
X Press button :.
If you select the loudest setting, indicator
lamp ;lights up.
Adjust the position of the exhaust flap using the DYNAMIC SELECT switch (Y page 152).Problems with the engine
Problem
Possible causes/consequences and
M MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivate the HOLD function (Y page 186) or DISTRONIC PLUS
(Y page 178).
X Start the engine again (Y page 145).The engine does not
start. The starter motor
can be heard. R
The engine electronics are malfunctioning.
R The fuel supply is malfunctioning.
Before attempting to restart the engine:
X Turn the key back to position uin the ignition lock.
or X Press the Start/Stop button repeatedly until all indicator lamps on
the instrument cluster go out.
X Start the engine again (Y page 145). Avoid excessively long and
frequent attempts to start the engine, as this will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. 150
DrivingDriving and pa
rking
Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display is at the
reserve level. The fuel tank is empty.
X Refuel the vehicle. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 348).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to excessively high thermal load.
X Start the engine again (Y page 145).
If the engine still does not start: X Consult a qualified specialist workshop. Vehicles with a petrol
engine:
The engine is not running
smoothly and is misfir-
ing. The engine electronics or a mechanical component of the engine
management system are/is malfunctioning.
X Depress the accelerator pedal only slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X Have the cause rectified immediately at a qualified specialist work-
shop. The coolant temperature
display is showing more
than 120 †. A display
message may also
appear on the multifunc-
tion display and a warn-
ing tone may sound. The coolant level is too low. The coolant is too hot and the engine is not
being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 329). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the engine radiator fan may be faulty. The
coolant is too hot and the engine is not being cooled sufficiently.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. Driving
151Driving and parking Z
Temporary setting
X
To activate: shift the DIRECT SELECT lever to
position D.
X Pull steering wheel gearshift paddle :or;.
The temporary setting will remain active for a
certain amount of time. Under certain condi-
tions, the minimum amount of time is extended,
e.g. in the case of lateral acceleration, during an overrun phase or when driving on steep terrain.
X To deactivate: pull steering wheel gearshift
paddle ;and hold it in place.
or X Use the DIRECT SELECT lever to shift the
transmission position.
or X Use the DYNAMIC SELECT switch to change
the drive program.
Permanent setting (Mercedes-AMG
vehicles) !
The automatic transmission does not shift
up automatically even when the engine limit-
ing speed for the current gear is reached.
When the engine limiting speed is reached,
the fuel supply is cut to prevent the engine
from overrevving. Always make sure that the
engine speed does not reach the red area of
the rev counter. There is otherwise a risk of
engine damage. X
To activate: shift the DIRECT SELECT lever to
position D.
X Press button :.
Indicator lamp ;lights up.
X To deactivate: press button:.
Indicator lamp ;goes out.
Shifting gears X
To shift up: pull steering wheel gearshift pad-
dle ;.
The automatic transmission shifts up to the
next gear.
If the maximum engine speed in the currently engaged gear is reached and you continue to
accelerate, the automatic transmission auto-
matically shifts up in order to prevent engine
damage.
Mercedes-AMG vehicles: if the permanent
setting is activated, the automatic transmis-
sion does not shift up automatically even
when the engine limiting speed is reached. Be
sure to observe the upshift indicator on the
multifunction display. Always make sure that Automatic transmission
159Driving and parking Z
X
If this is the case, park the vehicle only on
level ground and secure it to prevent it from
rolling away.
X Shift the automatic transmission to position
P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or if there is a malfunction in the system. Contact a
qualified specialist workshop.
The electric parking brake carries out a function
check at regular intervals when the engine is
switched off. Noises that occur are normal.
Applying or releasing manually X
To apply: push handle :.
When the electric parking brake is applied,
red indicator lamp !lights up on the
instrument cluster.
The electric parking brake can also be applied when the key is removed.
X To release: pull handle:.
Red indicator lamp !on the instrument
cluster goes out.
The electric parking brake can be released only:
R when the key is in position 1or 2in the igni-
tion lock (Y page 144) or
R if the ignition was switched on using the
Start/Stop button
Applying automatically The electric parking brake is automatically
applied when the transmission is in position P
and:
R the engine is switched off or
R the driver is not wearing a seat belt and the
driver's door is opened To prevent the electric parking brake from being
applied automatically, pull handle :.
The electric parking brake is also applied auto-
matically if:
R DISTRONIC PLUS brings the vehicle to a
standstill or
R the HOLD function is keeping the vehicle sta-
tionary or
R Active Parking Assist is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled:
R the engine is switched off
R the driver is not wearing a seat belt and the
driver's door is opened
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
Red indicator lamp !on the instrument clus-
ter lights up.
The electric parking brake is not automatically
applied if the engine is switched off by the ECO
start/stop function.
Releasing automatically The electric parking brake of your vehicle is
released automatically when all the following
conditions are fulfilled:
R the seat belt is fastened
R the engine is running
R you accelerate and the transmission is in
position Dor R
or
you shift the transmission position from Pto
position Dor R– You will need to accelerate
more on steeper gradients
If the transmission is in position R, the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled for the electric park- ing brake to be released automatically:
R the driver's door is closed
R you are shifting from transmission position P
or you have previously driven at speeds
greater than 3 km/h
Ensure that you do not depress the accelerator
pedal unintentionally. Otherwise, the parking
brake will be released and the vehicle will start
to move. Parking
169Driving and parking Z
display. In addition, warning lamp
8on the
instrument cluster lights up (Y page 286).
The ECO display consists of three sections, with an inner and outer area. The sections corre-
spond to the following three categories: :
Acceleration
(evaluation of all accel-
eration processes):
R The outer area fills up and the inner
area lights up green: moderate
acceleration, especially at higher
speeds.
R The outer area empties and the
inner area is grey: sporty acceler-
ation. ;
Coasting
(evaluation of all decelera-
tion processes):
R The outer area fills up and the inner
area lights up green: anticipatory
driving, keeping your distance and early release of the accelerator.
The vehicle can coast without use
of the brakes.
R The outer area empties and the
inner area is grey: frequent heavy
braking. =
Constant
(continuous evaluation
over the entire journey):
R The outer area fills up and the inner
area lights up green: constant
speed and avoidance of unneces-
sary acceleration and decelera-
tion.
R The outer area empties and the
inner area is grey: fluctuations in
speed. The three inner areas display the current driving
style and light up green as a result of a particu-
larly economical driving style. Depending on the driving situation, up to two areas may light up
simultaneously.
At the beginning of the journey, the three outer
areas are empty and fill up as a result of eco-
nomical driving. A higher level indicates a more
economical driving style. If the three outer areas
are completely filled at the same time, the driver
has adopted the most economical driving style
for the selected settings and prevailing condi-
tions. The ECO display border lights up. The ECO display does not indicate the actual fuel
consumption. The additionally achieved range
displayed under Bonus fr. start
Bonus fr. start does not
indicate a fixed consumption reduction.
In addition to driving style, the actual consump- tion is affected by other factors, such as:
R load
R tyre pressure
R cold start
R choice of route
R the use of electrical consumers
These factors are not included on the ECO dis-
play.
An economical driving style involves driving at a moderate engine speed.
To achieve a higher value in the categories
"Acceleration" and "Constant":
R observe the gearshift recommendation.
R drive the vehicle in drive program E
On long journeys at a constant speed, e.g. on the motorway, only the outer area for "Constant"
will change.
The ECO display summarises the driving style
from the start of the journey to its completion.
Therefore, there are more marked changes in
the outer areas at the start of a journey. During
a prolonged driving time, these changes are
smaller. For more marked changes, perform a
manual reset (Y page 234).
Further information on the ECO display
(Y page 233). Braking
Important safety notes G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface. Driving tips
171Driving and parking Z