DEF (BlueTECvehicles only )
General notes
To function properly, BlueTE Cexhaus tgas after-
treatmen tmus tbe operated wit hth ereducing
agen tDEF. Addin gDE Fis on eof th etask sper -
formed durin gmaintenance .Under normal
operatin gconditions, atank of DE Flast suntil
th enext servic edue date.
Whe nth esupply of DE Fis almost used up, th e
Check Additive See Operator' sManual
messag eis shown in th emultifunction display.
If you drive th evehicle faste rthan 10 mph
(16 km/h), th eCheck Additive See Opera‐
tor's Manualmessag egoe sout after approx -
imately on eminute.
Whe nth eDE Fsupply drops to aminimum ,th e
Remaining Starts :16
messag eis shown in
th emultifunction display.
If th eRemaining Starts :16
messag e
appears in th emultifunction display, you can
start th eengin eanother 16 times .If DE Fis no t
refilled, you will subsequently be unable to
star tth eengine.
XAd dat leas t 1gal (3. 8l) of DEF.
XSwitc hon th eignition fo rat leas t60 seconds.
XStart th eengine.
iHav eth eDE Ftank refille dat aqualified spe -
cialis tworkshop .
Use th especial DE Frefill bottl ewhen addin g
DE Fbetween maintenance intervals. You can
obtain further information from an authorized
Mercedes-Ben zCente ror ,if necessary, contact
Roadside Assistanc e (
Ypage 27).
If th eoutsid etemperature is belo w12 ‡(Ò11 †)
it may be difficult to top up. If DEF is frozen and
there is an active warning indicator, it may not
be possible to add DEF. Park the vehicle in a
warmer place, e.g. in a garage, until DEF has
become fluid again. It will then be possible to
add DEF again. Alternatively, have the DEF tank
refilled at a qualified specialist workshop.
Further information about BlueTEC exhaust gas aftertreatment and DEF is available at any
authorized Mercedes-Benz Center.
Important safety notes
DEF is a water-soluble fluid for the exhaust gas
aftertreatment of diesel engines. It is:
Rnot poisonous
Rcolorless and odorless
Rnot flammable
When you open the DEF container, small
amounts of ammonia vapor may be released.
Ammonia vapors have a pungent odor and are
particularly irritating to the skin, to mucous
membranes and to the eyes. You may experi-
ence a burning sensation in your eyes, nose and
throat. Coughing and watering of the eyes are
possible.
Do not inhale ammonia vapors. Fill the DEF tank
only in well-ventilated areas.
DEF must not come into contact with your skin,
eyes or clothing and must not be swallowed.
Keep DEF away from children.
If you or other persons come into contact with
DEF, observe the following:
RRinse DEF from your skin immediately with
soap and water.
RIf DEF comes into contact with your eyes,
immediately rinse them thoroughly with clean
water. Seek medical assistance without
delay.
RIf DEF has been swallowed, rinse your mouth
out immediately. Drink plenty of water. Seek
medical assistance without delay.
RChange out of clothing contaminated with
DEF immediately.
!Only use DEF in accordance with
ISO 22241. Do not mix any additives with
DEF, and do not dilute DEF with water. This
may destroy the BlueTEC exhaust gas after-
treatment system.
!The vehicle must be parked on level ground
to fill the DEF tank. The DEF tank can only be
filled as intended with the vehicle parked on a
level surface. This avoids false level readings. Filling the tank is not permitted if the vehicle
is not parked on a level surface. There is a
danger of overfil
ling, which could result in
damage to components of the BlueTEC
exhaust gas aftertreatment.
!Rinse surfaces that have come into contact
with DEF immediately with water or remove
DEF using a damp cloth and cold water. If the
DEF has already crystallized, use a sponge
Refueling167
Driving and parking
Z
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
energy and stored in the high-voltage battery.
Information on overrun mode (Ypage 253).
The high-voltage battery can be charged as fol-
lows:
Rthrough energy recuperation while the vehicle
is in motion
Rthrough the combustion engine while driving
in CHARGE operating mode (Ypage 246)
Rwith the relevant charging cable at an electri-
cal outlet while the vehicle is stationary
Rat a wallbox while the vehicle is stationary
Rat a charging station while the vehicle is sta-
tionary
The high-voltage battery can be charged in a
nominal voltage range from 100 V to 240 V.
You can view the condition of charge of the high-
voltage battery in the multifunction display. You
can find information in "PLUG-IN HYBRID oper-
ation", section "Menus and submenus" under
"Energy flow display" (
Ypage 247).
High and low outside temperatures
Low outside temperatures
At very low outside temperatures the maximum
power output of the high-voltage battery may be
reduced. The high-voltage battery is then no
longer able to provide the normal electrical
power output.
High outside temperatures
To prevent damage to the high-voltage battery
due to very high outside temperatures, the max-
imum power output of the high-voltage battery
is reduced by the vehicle.
Energy consumption and electrical
range
The maximum electrical range is generally
reduced by:
Rhigh and low outside temperatures
Roperating the climate control system
Rswitching on consumers
The battery's physical characteristics are such
that leaving the vehicle parked for long periods
at low outdoor temperatures without charging it
can lead to:
Ra reduction in battery performance
Rlonger charge times
Notes on battery care
Avoid storing or transporting the vehicle at
excessively high or low temperatures over a long
period.
If you park the vehicle and leave it stationary for
long periods:
Rcheck the condition of charge of the high-
voltage battery more often
Rconnect the vehicle to a power supply
This prevents self-discharge and damage to the high-voltage battery.
Terms of use
Please note the information on exceptions and
limitations in warranty documentation and in
the Maintenance Booklet.
Handling the charging cable and charg-
ing cable controls
Do not leave the charging cable controls
(Ypage 172) hanging loose from an electrical
outlet. Otherwise, this could result in a poor
contact with the electrical outlet and malfunc-
tions when charging the vehicle.
To ensure that the brackets within the charging
cable controls are not subjected to incorrect
loads, observe the following:
RNever lift or carry the controls by the charging
cable connector or the mains plug.
RTo transport the charging cable, the charging cable can be:
-wrapped around the controls or
-secured to the housing of the controls
Heat generated by the charging cable
and charging cable connector
Pay attention to the "Important safety notes"
(Ypage 169).
During the charging process, the charging cable
and charging cable connector may heat up.
The charging cable and the charging cable con-
nector will only heat up within the permissible
limiting values, provided that:
Rthe power supply and the charging cable are
not damaged
Rthe instructions for handling the charging
cable and controls on the charging cable are
observed
Charging the high-voltage battery171
Driving and parking
Z
Indicator
lamp
Lights up
orangeA charging break for the high-
voltage battery is taking
place.
The indicator lamp goes out
after approximately
90 seconds.
Lights up
greenThe high-voltage battery is
fully charged.
The indicator lamp goes out
after approximately
90 seconds.
iIf the indicator lamp is off, lock or unlock the
vehicle. The indicator lamp then displays the
current status of the charging process again.
Connecting the charging cable
XShift the transmission to position P.
XSwitch the ignition off.
XPress the charge socket flap in the direction
of arrow:.
The charge socket flap swings up.
XPress fastener ;to the left.
Socket cap =is open.
XInsert the power supply plug into the electri-
cal outlet to the stop.
XInsert the charging cable connector into vehi-
cle socket ?to the stop.
Indicator lamp Afirst flashes orange and
then green.
The high-voltage battery is being charged.
If the charging cable is plugged in to the vehicle, you cannot start the engine or move the vehicle.
When the charging process begins, you can view
the charging prediction in the Settings
menu
of the on-board computer. The charging predic-
tion is either the anticipated condition of charge
at the programmed departure time or the time
when the high-voltage battery will be fully
charged (
Ypage 274).
iDepending on the temperature, the fan and
battery cooling system may audibly switch on
during the charging process.
Removing the charging cable
The high-voltage battery is fully charged when:
Rthe charge level display reaches 100% in the
multifunction display (Ypage 247)
Rthe indicator lamp in the vehicle socket lights up green after unlocking or locking the vehicle
XPress and hold button Bon the charging
cable connector and remove the charging
cable connector from the vehicle socket.
XClose socket cap =.
XClose charge socket flap :.
XRemove the mains plug from the mains
socket and safely stow away the charging
cable inside the vehicle (
Ypage 172).
174Charging the high-voltage battery
Driving and parking
Charging the high-voltage battery
from the wallbox
General notes
It is recommended that you charge your vehicle
using a wallbox or at a charging station.
Make sure that the maximum charging current is
not limited in the Settings
menu of the on-
board computer. You must select the maximum
value if charging at a wallbox or a charging sta-
tion (
Ypage 273).
Pay attention to the "Important safety notes"
(
Ypage 169).
Connecting the charging cable
XShift the transmission to position P.
XSwitch the ignition off.
XPress the charge socket flap in direction of
arrow:.
The charge socket flap swings up.
XPress fastener ;to the left.
Socket cap =is open.
XInsert the charging cable connector into vehi-
cle socket ?to the stop.
Indicator lamp Afirst flashes orange and
then green. The high-voltage battery is being charged.
If the charging cable is plugged in to the vehicle, you cannot start the engine or move the vehicle.
When the charging process begins, you can view
the charging prediction in the Settings
menu
of the on-board computer. The charging predic-
tion is either the anticipated condition of charge at the programmed departure time or the time
when the high-voltage battery will be fully
charged (
Ypage 274).
iDepending on the temperature, the fan and
battery cooling system may audibly switch on
during the charging process.
Removing the charging cable
The high-voltage battery is fully charged when:
Rthe charge level display reaches 100% in the
multifunction display (Ypage 247)
Rthe indicator lamp in the vehicle socket lights up green after unlocking or locking the vehicle
XPress and hold button Bon the charging
cable connector and remove the charging
cable connector from the vehicle socket.
XClose socket cap =.
XClose charge socket flap :.
Charging the high-voltage battery at
the charging station
Before beginning the charging process at a
charging station without communication capa-
bilities, you must first activate the station, e.g.
using an RFID card. Observe the on-site opera-
tor instructions for the charging station.
The connection for the vehicle at a charging sta-
tion is identical to the connection on a wallbox
(
Ypage 175).
Charging the high-voltage battery175
Driving and parking
Z
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
Switching off the engine
Important safety notes
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off 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 vehi-
cle from rolling away by applying the parking
brake.
Using the SmartKey
XApply the electric parking brake.
XShift the transmission to position P.
XTurn the SmartKey to position0in the ignition
lock and remove it.
The immobilizer is activated.
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
If you then open the driver's door or the front-
passenger door or remove the SmartKey from
the ignition, the automatic transmission shifts
to Pautomatically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing system:
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.
Using KEYLESS-GO
XApply the electric parking brake.
XShift the transmission to position P.
XPress the Start/Stop button (Ypage 146)
The engine stops and all the indicator lamps in
the instrument cluster go out. If you switch the engine off with the transmis-
sion in position
Ror D, the automatic transmis-
sion shifts to Nautomatically.
If you then open the driver's or front-passenger door, the automatic transmission shifts to P
automatically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing
system:
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.
iThe engine can be switched off in an emer-
gency while the vehicle is in motion by press-
ing and holding the Start/Stop button for
three seconds.
Electric parking brake
General notes
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.
Parking179
Driving and parking
Z
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction in
the system, it may not be possible to apply the
released parking brake.
XIf this is the case, only park the vehicle on
level ground and secure it to prevent it rolling
away.
XShift 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
there is a malfunction in the system. Contact a
qualified specialist workshop.
iThe electric parking brake performs a func-
tion test at regular intervals while the engine
is switched off. The sounds that can be heard
while this is occurring are normal.
Applying or releasing manually
XTo engage: push handle :.
When the electric parking brake is engaged,
the F (USA only) or !(Canada only)
red indicator lamp lights up in the instrument
cluster.
iThe electric parking brake can also be
applied when the SmartKey is removed.
XTo release: pull handle:.
The red F(USA only) or !(Canada
only) indicator lamp in the instrument cluster goes out.
iThe electric parking brake can only be
released:
Rif the SmartKey is in position 1in the igni-
tion lock (Ypage 145) or
Rif the ignition was switched on using the
Start/Stop button To ensure that you do not roll backwards when
pulling away on an uphill slope, engage the elec-
tric parking brake (
Ypage 149).
Applying automatically
The electric parking brake is automatically
applied when the transmission is in position P
and:
Rthe engine is switched off or
Rthe driver is not wearing a seat belt and the
driver's door is opened.
To prevent the electric parking brake from being
automatically applied, pull handle :.
The electric parking brake is also engaged auto- matically if:
RDISTRONIC PLUS brings the vehicle to a
standstill or
Rthe HOLD function is keeping the vehicle sta-tionary
RActive Parking Assist is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled:
Rthe engine is switched off
Rthe driver is not wearing a seat belt and the
driver's door is opened
Rthere is a system malfunction
Rthe power supply is insufficient
Rthe vehicle is stationary for a lengthy period
The red F(USA only) or !(Canada only)
indicator lamp in the instrument cluster lights
up.
The electric parking brake is not automatically
engaged if the engine is switched off by the ECO
start/stop function.
Releasing automatically
The electric parking brake is released automat-
ically when all of the following conditions are
fulfilled:
Rthe engine is running.
Rthe transmission is in position Dor R.
Rthe seat belt has been fastened.
Ryou depress the accelerator pedal.
If the transmission is in position R, the trunk lid
must be closed.
180Parking
Driving and parking