
Starting the engine
Important safety notes G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R startingt he engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey 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 ar isk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation. 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 arisk
of fire.
Carry out regular checkstom ake sure that
there are no flammable foreign materials in
the engine compartmen torinthe exhaust
system.
! Do not depress the accelerator pedal
when startingt he engine. General notes i
The catalytic converter is preheated for
up to 30 seconds after acold start. The
sound of the engine may change during this
time.
Automatic transmission X
Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
i You can also start the engine when the
transmission is in position N.
Starting procedurew ith the SmartKey i
To start the engine using the SmartKey
instead of KEYLESS-GO, pull the Start/
Stop button out of the ignition lock.
X Turn the SmartKey to position 3in the
ignition lock (Y page 147) and release it as
soon as the engine is running.
Using KEYLESS-GO to startt he engine i
The Start/Stop button can be use dto
start the vehicle manually without inserting
the SmartKey into the ignition lock. The
Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in
the vehicle. This mode for starting the
engine operates independently of the ECO
start/stop automatic engine start function.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y pag e147).
The engine starts. Driving
149Driving and parking Z

Important safety notes
G
WARNING
If th eengineiss witched off automatically and
you exit th evehicle, th eengine is restarted
automatically. The vehicl emay begi nmoving.
There is arisk of accident and injury.
If you wish to exit the vehicle, alwayst urn off
the ignition and secure the vehicle against
rolling away.
General notes 001A
ECO start/stop display
If the 000C symbol is shown in green in the
multifunction display ,the ECO start/stop
function switches the engine off
automatically if the vehicle stops moving.
Every time you switch on the engine using the
SmartKey or the Start/Stop button ,the ECO
start/stop function is activated.
If the ECO start/stop function has been
manually deactivated (Y page 152) or a
malfunction has caused the system to be
deactivated, the 000Csymbol is not
displayed.
AMG vehicles: theStop/Start active or
Stop/Start inactive message in the AMG
menu in the multifunction display goes out.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
For further information on automatic engine
switch-off (Y page 151) and automatic
engine start (Y page 152). Automatic engine switch-off General notes
If the vehicle is braked to
astandstill in Dor
N,t he ECO start/stop function switches off
the engine automatically.
The ECO start/stop function is operational
and the 000Csymbol is displayed in green in
the multifunction display ,if:
R the indicator lamp in the ECO button is lit
green.
R the outside temperature is within the
comfor trange.
R the engine is at normal operating
temperature.
R the set temperature for the vehicle interior
has been reached.
R the battery is sufficiently charged.
R the system detect sthat the windshield is
not fogged up when the air-conditioning
system is switched on.
R the hood is closed.
R the driver's door is closed and the driver's
seat belt is fastened.
If conditions for automatic engine switch-off
have not been fulfilled, the 000Csymbol will
be shown in yellow.
AMG vehicles: the AMG menu in the
multifunction display also shows the Stop/ Start inactive message.
i If you shift the transmission from Rto D,
the ECO start/stop function is available
again once the 000Csymbol reappears in
green in the multifunction display.
i All of the vehicle's systems remain active
when the engine has been stopped
automatically.
i All vehicles (apartf rom AMG
vehicles): automatic engine switch-off can
take place amaximum of four times
consecutively (initial stop then repeated
three times). The 000Csymbol is shown in
yellow in the multifunction display after the
engine has been started automatically for Driving
151Driving and parking Z

Problems with the engine
Problem Possible causes/consequences and
000B Solutions
The engine does not
start. The starter motor
can be heard. R
There is amalfunction in the engine electronics.
R There is amalfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumen tcluster go
out.
X Try to start the engine again (Y page 149). Avoid excessively
long and frequent attempt stostart the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult aqualified specialist workshop. 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-star tthe vehicle (Y page 326).
If the engine does not start despite attemptstoj ump-start it:
X Consult aqualified specialist workshop. The starter motor was exposed to
athermal load that was too high.
X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult aqualified specialist workshop. The engine is not
running smoothly and
is misfiring. There is
amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
X Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at aqualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it. The coolant
temperature gauge
shows
avalue above
248 ‡(120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer 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 308). Observe the warning
notes as you do so and add coolant if necessary. 154
DrivingDriving and parking

Automati
ctransmission Important safety notes
G
WARNING
If th eengines pee disa bovethe idlin gspeed
and you engage transmission position Dor
R,t hevehicl ecould pull away suddenly. There
is ar iskofana ccident.
When engagin gtransmission position Dor R,
always firmly depress th ebrak epedal and do
no tsimultaneously accelerate. G
WARNING
The automatic transmission switches to
neutral position Nwhen you switc hoff the
engine. The vehicle may roll away. There is a
risk of an accident.
After switching off the engine, always switch
to parking position P.Prevent the parked
vehicle fro mrolling away by applying the
parking brake. Selector lever
Overview of transmission positions Selector lever in AMG vehicles with
Pbutton
0008 Park position with parking lock
000A Reverse gear
0006 Neutral
0007 Drive Transmission position and drive
program display !
If the transmission position display in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Ideally ,you should select
transmission position Dand drive program
C.Don ot restric tthe shift range. 001A
Transmission position display
0010 Drive program display
The current position of the selector lever is
shown by the indicators next to the selector
lever.
The indicators light up when the SmartKey is
inserted into the ignition lock. The indicators
go out when the SmartKey is removed from
the ignition lock. DIRECT SELECTl
ever
Overview of transmission positions 0008
Park position with parking lock
000A Reverse gear
0006 Neutral
0007 Drive Automatic transmission
155Driving and parking Z

Engaging park position
PinAMG
vehicles X
When th evehicle is stationary, press P
button 001A.
Engaging revers egear R !
Only shif tthe automatic transmission to
R when the vehicle is stationary.
X When the vehicle is stationary, depress the
brake pedal.
X Push the DIRECT SELECT lever up past the
first point of resistance.
Shifting to neutralN G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R startingt he engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the vehicle. Always keep the SmartKey out of
reach of children.
X When the vehicle is stationary, depress the
brake pedal.
X Push the DIRECT SELECT lever up or down
to the first point of resistance.
If the engine has been switched off, the
automatic transmission automatically shifts
to N.
If the automatic transmission is to remain in
neutral N,e.g. for washing the vehicle in car
washes with atowing device, please observe
the following instructions:
Using the SmartKey:
R Make sure that the ignition is switched on.
R When the vehicle is stationary, depress the
brake pedal and keep it depressed.
R Shift to neutral N.
R Release the brake pedal.
R If the parking brake is engaged, release it.
R Switch off the ignition and leave the
SmartKey in the ignition lock.
Using KEYLESS-GO:
R Make sure that the ignition is switched on.
R When the vehicle is stationary, depress the
brake pedal and keep it depressed.
R Engage park position P.
R Release the brake pedal.
R Remove the Start/Stop button from the
ignition lock.
R Insert the SmartKey into the ignition lock.
R Switch on the ignition.
R Depress the brake pedal and keep it
depressed.
R Shift to neutral N.
R Release the brake pedal.
R If the parking brake is engaged, release it.
R Switch off the ignition and leave the
SmartKey in the ignition lock. Automatic transmission
157Driving and parking Z

!
Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the
ignition if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. The repair
costs are high. Notify aqualified specialist
worksho pand have th efuel tan kand fuel
lines draine dcompletely.
! Overfilling the fuel tank could damage the
fuel system.
! Take car enot to spill any fuel on painted
surfaces .You could otherwise damage the
paintwork.
! Use afilter when refueling from afuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank,f uel could spray
out when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
(Y page 374). Refueling
Opening/closing the fuel filler flap 001A
To open the fuel filler flap
0010 To insert the fuel filler cap 0024
Tire pressure table
0021 Fuel type to be used
The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with the SmartKey or with KEYLESS-
GO.
The position of the fuel filler cap is displayed
0007 in the instrument cluster. The arrow
next to the filling pump indicates the side of
the vehicle.
Opening the fuel filler flap 001A
To open the fuel filler flap
0010 To insert the fuel filler cap
0024 Tire pressure table
0021 Fuel type to be used
X Switch the engine off.
X Remove the SmartKey from the ignition
lock.
X KEYLESS-GO: open the driver’s door.
This corresponds to key position 0:"key
removed".
The driver’s door can be closed again.
X Press the fuel filler flap in the direction of
arrow 001A.
The fuel filler flap opens slightly.
X Open the fuel filler flap fully.
X Turn the fuel filler flap counter-clockwise
and remove it. Refueling
165Driving and parking Z

Problems with fuel and the fuel tank
Problem Possible causes/consequences and
000B Solutions
Fuel is leaking from the
vehicle. The fuel line or the fuel tank is faulty.
G WARNING
Risk of explosion or fire.
X Turn the SmartKey to position 0in the ignition lock and remove
it immediately (Y page 147).
X Do not restart the engine under any circumstances.
X Consult aqualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle using the mechanical key (Y page 78).
X Open the trunk lid or the tailgate.
X open the trunk lid.
X Manuallyu nlock the fuel filler flap using the emergency release
(Y page 166). The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult aqualified specialist workshop. Parking
Important safety notes
G
WARNING
If flammable materials such as leaves, grass
or twigs are exposed to prolonged contact to
parts of the exhaust system that heat up, they
could ignite. There is arisk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect.Y
ou will require considerably
more effort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's
equipment. There is arisk of an accident and
injury. Parking
167Driving and parking
Z

When leaving the vehicle, alway
stake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Always secure the vehicle correctly
against rolling away .Otherwise, the vehicle
or its drivetrai ncould be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
R the parking brake must be applied.
R the transmission must be in position Pand
the SmartKey must be removed from the
ignition lock.
R on uphill or downhill gradients, the front
wheels must be turned towards the curb. Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to
neutral position Nwhen you switch off the
engine. The vehicle may roll away.T here is a
risk of an accident.
After switching off the engine, always switch
to parking position P.Prevent the parked
vehicle from rolling away by applying the
parking brake.
Vehicles with automatic transmission X
Apply the parking brake firmly.
X All vehicles( except AMG vehicles): shift
the transmission to position P. Selector lever in AMG vehicles with
Pbutton
X AMG vehicles: pressPbutton 001A.
Using the SmartKey
X Turn the SmartKey to position 0in the
ignition lock and remove it.
The immobilizer is activated.
i If you turn off the engine with the
SmartKey and then remove it from the
ignition lock or open afront door, the
automatic transmission shifts to P
automatically.
Using KEYLESS-GO
X Press the Start/Stop button (Y page 147).
The engine stops and all the indicator
lamps in the instrumentc luster go out.
i When the driver's door is closed, this
corresponds to key position 1.When the
driver's door is open ,this corresponds to
key position 0:"key removed".
i If yo uturno ff the engine with the Start/
Stop button, the automatic transmission
shifts to N.Ifyou then open one of the front
doors, the automatic transmission shifts to
P.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for about three
seconds. This function operates
independently of the ECO start/stop
automatic engine switch-off function. 168
ParkingDriving and parking