
Engaging park position P
!If the engine speed is too high or the vehicle
is moving, do not shift the automatic trans-
mission directly from Dto R, from Rto Dor
directly to P. The automatic transmission
could otherwise be damaged.
jPark position with parking lock
kReverse gear
iNeutral
hDrive
XPush the DIRECT SELECT lever in the direction
of arrow P.
Engaging park position P automatically
Park position Pis automatically engaged if:
Ryou switch off the engine using the SmartKey
and remove the SmartKey
Ryou switch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Rthe driver's door is opened when the vehicle is
stationary or driving at very low speed and the
transmission is in position Dor R
Under certain conditions, the automatic trans-
mission shifts automatically to transmission
position Pif the HOLD function or DISTRONIC
PLUS is activated. Observe the information on
the HOLD function (
Ypage 205) and on
DISTRONIC PLUS (Ypage 196).
Engaging reverse gear R
!Only shift the automatic transmission to R
when the vehicle is stationary.
XIf the transmission is in position Dor N: push
the DIRECT SELECT lever up past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up past the first point of resistance.
Shifting to neutral N
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk 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.
XIf the transmission is in position Dor R: push
the DIRECT SELECT lever up or down to the
first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up or down to the first point of resist-
ance.
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove
the SmartKey from the ignition, the automatic
transmission shifts to Pautomatically.
With the Start/Stop button: ifyou t
hen open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
Automatic transmission155
Driving and parking
Z

If you want the automatic transmission to
remain in neutralN, e.g. when having the vehicle
cleaned in an automatic car wash with a towing system:
Using the SmartKey:
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
With the Start/Stop button:
XRemove the Start/Stop button from the igni-
tion lock.
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N: push
the DIRECT SELECT lever down past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance.
Transmission positions
BPark position
Only shift the transmission into posi-
tion Pwhen the vehicle is stationary
(
Ypage 178). The parking lock
should not be used as a brake when
parking. Always apply the electronic
parking brake in addition to the park-
ing lock in order to secure the vehi-
cle.
If the vehicle electronics are malfunc- tioning, the transmission may be
locked in position P. Have the vehicle
electronics checked immediately at a
qualified specialist workshop.
Park position Pis automatically
engaged if:
Ryou switch off the engine using the
SmartKey and remove the Smart-
Key
Ryou switch off the engine using the
SmartKey or using the Start/Stop
button and open the driver's door
or front-passenger door
Rthe driver's door is opened when
the vehicle is stationary or driving
at very low speed and the trans-
mission is in position Dor R
CReverse gear
Only shift the transmission into posi-
tion Rwhen the vehicle is stationary.
156Automatic transmission
Driving and parking

Problems with the transmission
ProblemPossible causes/consequences andMSolutions
The transmission has
problems shifting gear.The transmission is losing oil.
XHave the transmission checked at a qualified specialist workshop
immediately.
7G-TRONIC:
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.The transmission is in emergency mode.
It is only possible to shift intosecondgear and reverse gear.
XStop the vehicle.
XShift the transmission to position P.
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to positionDor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
XHave the transmission checked at a qualified specialist workshop
immediately.
9G-TRONIC:
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.The transmission is in emergency mode.
It is only partly possible to engage the gears or the transmission is in
position N.
XStop the vehicle.
XShift the transmission to position P.
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to positionDor R.
XHave the transmission checked at a qualified specialist workshop
immediately.
Problems with PLUG-IN HYBRID operation (Ypage 255).
Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always trans-
mitted to both axles.
!Performance tests may only be carried out
on a 2-axle dynamometer. The brake system
or transfer case could otherwise be damaged. Contact a qualified specialist workshop for a
performance test.
!Because ESP®is an automatic system, the
engine and ignition must be switched off
(SmartKey in position 0or 1or Start/Stop
button in position 0or 1) when the electric
parking brake is being tested on a brake dyna-
mometer (maximum 10 seconds). Braking triggered automatically by ESP
®may
seriously damage the brake system.
!Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as
doing so will damage the transmission.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
162Refueling
Driving and parking

The position of the fuel filler cap is displayed
8in the instrument cluster. The arrow next
to the filling pump indicates the side of the vehi-
cle.
Preparing to refuel
XSwitch off the engine.
XRemove the SmartKey from the ignition lock.
or, on vehicles with KEYLESS‑GO:
XOpen the driver's door.
The on-board electronics now have status 0.
This is the same as the SmartKey having been
removed.
The driver’s door can be closed again.
Opening the fuel filler flap (except
PLUG-IN HYBRID vehicles)
:To open the fuel filler flap
;To insert the fuel filler cap
=Instruction label for fuel type to be refueled
?Tire pressure table
XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder on the
inside of the fuel filler flap.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
XOnly fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may
leak out. Vehicles with a diesel engine:
the filler neck is
designed for refueling at diesel filling pumps.
Opening the fuel filler flap (PLUG-IN
HYBRID vehicles)
XPull switch ;.
Indicator lamp :flashes and the Please
Wait Depressurizing Tankmessage
appears in the multifunction display.
If the fuel filler cap is unlocked, indicator
lamp :lights up.
The Tank is Depressurized Ready for
Refuelingmessage appears in the multi-
function display.
Please be sure to observe the information on
refueling on the fuel filler flap.
There is a malfunction if:
Rindicator lamp :first flashes and then goes
out
Rthe yellow engine diagnostics warning lamp
lights up
iFrom a speed of 1 mph (2 km/h), the fuel
filler flap can no longer be opened.
iThe unlocking process for the fuel filler cap
may take up to 15 minutes.
164Refueling
Driving and parking

Problems with fuel and the fuel tank
ProblemPossible causes/consequences andMSolutions
Fuel is leaking from the
vehicle.GWARNING
The fuel line or the fuel tank is faulty.
Risk of explosion or fire.
XApply the electric parking brake.
XSwitch off the engine.
XRemove the SmartKey from the ignition lock.
or, in vehicles with KEYLESS-GO start-function or KEYLESS ‑GO
XOpen the driver's door.
The on-board electronics now have status0. This is the same as the
SmartKey having been removed.
XDo not restart the engine under any circumstances.
XConsult a qualified specialist workshop.
The engine does not
start.The fuel tank of a vehicle with a diesel engine has been run completely
dry.
XRefuel the vehicle with at least 5.3 US qt (5 liters) of diesel.
XTurn the ignition on for approximately ten seconds (Ypage 145).
XStart the engine continuously for up to ten seconds until it runs
smoothly.
If the engine does not start:
XTurn the ignition on again for approximately ten seconds
(Ypage 145).
XStart the engine again continuously for up to ten seconds until it
runs smoothly.
If the engine does not start after three attempts:
XConsult a qualified specialist workshop.
The fuel filler flap cannot
be opened.The fuel filler flap is not unlocked.
XUnlock the vehicle (Ypage 78).
XPLUG-IN HYBRID Vehicles: depressurize the fuel tank
(Ypage 163).
The SmartKey battery is discharged or nearly discharged.
XUnlock the vehicle using the mechanical key (Ypage 80).
The fuel filler flap is unlocked, but the opening mechanism is jammed.
XConsult a qualified specialist workshop.
166Refueling
Driving and parking

and cold water to clean it. DEF residues crys-
tallize after time and contaminate the affec-
ted surfaces.
!DEF is not a fuel additive and must not be
added to the fuel tank. If DEF is added to the
fuel tank, this can lead to engine damage.
For further information on DEF, see
(
Ypage 436).
Opening the DEF filler cap
The fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the SmartKey or with KEYLESS-GO.
XSwitch the ignition off.
XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
XTurn blue DEF fuel filler cap ;counter-clock-
wise and remove it.
DEF filler cap ;is secured with a plastic
strip.
DEF refill canisters
!Do not tighten the disposable hose with too
much force. The disposable hose may other-
wise be destroyed.
XUnscrew the cap from the opening on top of
DEF refill canister ;.
XPlace disposable hose :on the opening of
DEF refill canister ;and screw it on clock-
wise until hand-tight.
iDisposable hose :remains closed until
you fasten disposable hose :to the DEF
filler neck of the vehicle.
XPlace disposable hose :on the filler neck on
the vehicle and screw it on clockwise until
hand-tight. When you feel resistance, dispos-
able hose :is sufficiently secured.
XLift up and tip DEF refill canister ;.
iFilling stops when the DEF tank is com-
pletely filled. Do not fill the DEF tank any fur-
ther. DEF refill canister ;can be removed
when it has been only partially emptied.
XTurn disposable hose :on the filler neck of
the vehicle counter-clockwise and remove it.
XTurn disposable hose :on the opening of
DEF refill canister ;counter-clockwise and
remove it.
XReseal DEF refill canister ;with the cap.
DEF refill canisters can be obtained at many gas
stations or at an authorized Mercedes-Benz
Center. DEF refill canisters are often sold with a
filler hose. A filler hose that does not exactly fit
168Refueling
Driving and parking

Problems with the charging process
ProblemPossible causes/consequences andMSolutions
The charge socket flap
cannot be opened.The charge socket flap is not unlocked.
XUnlock the vehicle (Ypage 78).
If the SmartKey battery is discharged:
XUnlock the driver's door using the mechanical key (Ypage 80).
or
XUnlock the vehicle centrally from the inside (Ypage 85).
The charge socket flap is unlocked, but the opening mechanism is
jammed.
XLock the vehicle and unlock it again.
If, after that, the opening mechanism is still jammed:
XConsult a qualified specialist workshop.
The high-voltage battery
is not being charged.The indicator lamp on the vehicle socket flashes red.
A malfunction has occurred during the initialization of the charging
process or during charging.
XDisconnect the charging cable connector from the vehicle socket
and plug it back into the vehicle socket.
If the problem persists:
XHave the power socket checked or use another power socket.
or
XUse a different charging station.
or
XConsult a qualified specialist workshop.
176Charging the high-voltage battery
Driving and parking

Every person who has access to the informa-
tion stated can use the functions of the online
access to the vehicle.
iInformation when selling a vehicle or
buying a used vehicle:
RIf you sell your vehicle, you are obliged to
delete the vehicle from your personal area
on the online access to the vehicle.
RIf you have bought a used vehicle, it is pos-
sible that the previous owner still has
access to the online access to the vehicle.
Calling up functions
The online access to the vehicle allows you
access to your vehicle's information and func-
tions using remote query and remote configu-
ration.
The following functions can be accessed:
Rrequest the current condition of charge of the
high-voltage battery
Rprogram the departure time (Ypage 274)
Rset or activate the "Pre-entry climate control
at departure time" function (see the separate
COMAND operating instructions)
Information on additional functions and operat- ing instructions can be found within the online
access to the vehicle.
Connecting the vehicle to the Internet
iThis function is not available in all countries
and requires activated access to the mbrace
emergency call system.
You can use the online access to the vehicle if
the vehicle has a connection to the Internet via a mobile phone network. The necessary data is
transmitted by radio. The vehicle automatically
recognizes whether a connection to the Internet
is possible or not. No presets are necessary.
iRestrictions in reception are possible if the
vehicle is in an underground car park, for
example. Restrictions may also occur in areas with poor mobile network coverage.
Parking
Important safety notes
GWARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take 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 driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in position Pand the
SmartKey must be removed from the ignition
lock.
Rthe front wheels must be turned towards the
curb on steep uphill or downhill gradients.
Rthe empty vehicle must be secured at the
front axle with a wheel chock or similar, for
example, on uphill or downhill gradients.
Ra laden vehicle must also be secured at the
rear axle with a wheel chock or similar, for
example, on uphill or downhill gradients.
178Parking
Driving an d parking