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
the vehicle's DEF tank offers no protection
against overfilling. DEF may leak if overfilled.
Mercedes-Benz offers a special disposable hose
with overfill protection. You can obtain this from
any authorized Mercedes-Benz Center. DEF is
available in a variety of containers and recepta-
cles. Only use the disposable hose with the
Mercedes-Benz DEF refill canisters.
DEF refill bottle
!Only screw on the DEF refill bottle hand-
tight. It could otherwise be damaged.
XUnscrew the protective cap from DEF refill
bottle :.
XPlace DEF refill bottle :on the filler neck as
shown and screw it on clockwise until hand-
tight.
XPress DEF refill bottle :towards the filler
neck.
The DEF tank is filled. This may take up to one
minute.
iWhen DEF refill bottle :is no longer
pressed, filling stops and the bottle may be
taken off again after being only partially emp-
tied.
XRelease DEF refill bottle :.
XTurn DEF refill bottle:counter-clockwise
and remove it.
XScrew the protective cap onto DEF refill bot-
tle : again.
DEF refill bottles can be obtained at many gas
stations or at an authorized Mercedes-Benz
Center. Refill bottles without a threaded cap do
not provide overfill protection. DEF may leak if
overfilled. Mercedes Benz offers special refill
bottles with a threaded seal. These are available
at any authorized Mercedes-Benz Center.
Closing the DEF filler cap
XInstall DEF filler cap ;on the filler neck and
turn it clockwise.
XTo close the fuel filler flap, press it in the
direction of arrow :.
XDrive faster than 10 mph (16 km/h).
TheCheck Additive See Operator's
Manualmessage goes out after approx-
imately one minute.
iIf the Check Additive See Operator'sManualmessage continues to be shown in
the multifunction display, you must add more
DEF.
Charging the high-voltage battery
Important safety notes
GDANGER
The vehicle's high-voltage electrical system is under high voltage. If you modify components
in the vehicle's high-voltage electrical system
or touch damaged components, you may be
electrocuted. The components in the vehi-
cle's high-voltage electrical system may be
damaged in an accident, although the damage
is not visible. There is a risk of fatal injury.
Following an accident, do not touch any high-
voltage components and never modify the
vehicle's high-voltage electrical system. Have
the vehicle towed away after an accident and
the vehicle's high-voltage electrical system
checked by a qualified specialist workshop.
Charging the high-voltage battery169
Driving an d parking
Z
Drive sensibly–save fuel
Observ eth efollowin gtips to sav efuel:
XThe tires should always be inflate dto th erec -
ommended tire pressure.
XRemov eunnecessary loads.
XRemov eroof carriers when they are no tnee-
ded.
XWar mup th eengin eat low engin espeeds .
XAvoid frequent acceleration or braking .
XHaveall maintenance wor kcarrie dout as
indicated by th eservic eintervals in th eMain -
tenance Booklet or by th eservic einterval dis -
play.
Fue lconsumption also increase swhen drivin gin
cold weather ,in stop-start traffic and in hill yter-
rain .
Drinking an ddrivin g
GWARNING
Drinking and drivin gand/o rtaking drugs and
drivin gare ver ydangerous combinations.
Even asmall amount of alcoho lor drugs can
affec tyour reflexes, perception sand judg-
ment.
The possibilit yof aserious or eve nfatal acci-
den tis greatly increase dwhen you drink or
take drugs and drive.
Do no tdrink or take drugs and drive or allow
anyon eto drive who has bee ndrinkin gor tak-
in g drugs.
Emission contro l
GWARNING
Combustion engines emi tpoisonous exhaus t
gases suc has carbon monoxide. Inhaling
these exhaus tgases lead sto poisoning. There
is aris kof fatal injury. Therefor enever leav e
th eengin erunning in enclose dspaces with-
out sufficien tventilation .
Certain engin esystems are designed to keep
th elevel of poisonous component sin exhaus t
fumes within lega llimits.
These systems only wor kat peak efficiency if
they are serviced exactly in accordance wit hth e
manufacturer's specifications. Always hav ewor
kon th eengin ecarrie dout at aqualified
specialis tworkshop .Mercedes-Ben zrecom -
mends that you use an authorized Mercedes -
Benz Cente rfo rthis purpose. In particular, wor k
relevant to safet yor on safety-related systems
mus tbe carrie dout at aqualified specialis t
workshop .
The engin esetting smus tno tbe changed under
any circumstances. Furthermore, all specific
servic ewor kmus tbe carrie dout at regular
intervals and in accordance wit hth eMercedes -
Benz servic erequirements .Details can be found
in th eMaintenance Booklet .
ECO display
The ECOdisplay shows you how economical
your drivin gstyle is. The EC Odisplay assist syou
in achievin gth emost economical drivin gstyle
fo rth eselecte dsetting sand prevailin gcondi-
tions. Your drivin gstyle can significantly influ-
ence th evehicle' sconsumption .
:Acceleration
;Coasting
=Constant
?Additional range achieved
Range ?is shown under Bonus
fr.Startand
represents th eadditional range achieved since
th ebeginning of th ejourney as aresult of an
adapted drivin gstyle.
If th efue llevel has dropped into th ereserv e
range, th eReserv eFue l
messag eis shown in
th emultifunction display instead of range ?.
The 8 warnin glamp in th einstrumen tcluster
also lights up (
Ypage 325).
182Driving tips
Driving and parking
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):
Rthe outer area fills up and the inner area lights up green: moderate
acceleration, especially at higher
speeds
Rthe outer area empties and the
inner area is gray: sporty acceler-
ation
;Coasting (evaluation of all decelera-
tion processes):
Rthe 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.
Rthe outer area empties and the
inner area is gray: frequent heavy
braking
=Constant (continuous evaluation
over the entire journey):
Rthe outer area fills up and the inner area lights up green: constant
speed and avoidance of unneces-
sary acceleration and deceleration
Rthe outer area empties and the
inner area is gray: 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 thedriving 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
does not
indicate a fixed consumption reduction. In addition to driving style, the actual consump-
tion is affected by other factors, such as:
Rload
Rtire pressure
Rcold start
Rchoice of route
Relectrical consumers switched on
These factors are not included in the ECO dis-
play.
An economical driving style specially requires
driving at moderate engine speeds.
Achieving a higher value in the categories
"Acceleration" and "Constant":
Robserve the gearshift recommendations.
Rdrive the vehicle in the Comfortdrive pro-
gram.
On long journeys at a constant speed, e.g. on the
highway, only the outer area for "constant" will
change.
The ECO display summarizes 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. On lon- ger journeys, there are fewer changes. For more
marked changes, perform a manual rest
(
Ypage 267).
For further information on the ECO display, see
(
Ypage 267).
Brakes
Important safety notes
GWARNING
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.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients
!On long and steep gradients, you must
reduce the load on the brakes by shifting early
to a lower gear. This allows you to take
advantage of the engine braking effect and
Driving tips183
Driving and parking
Z
XClean the wheels, wheel housings and the
vehicle undersi de with a water jet; check for
any foreign objects and damage.
XCheck whether twigs or other parts of plants
have become tr apped.These increase the risk
of fire and can damage fuel pipes, brake
hoses or the rubber bellowsof the axle joints
and propeller shafts.
XAfter the trip,examine without fail the entire
undercarriage, wheels, tires, brakes, body-
work structure, steering, chassis and exhaust
system for damage.
XAfter driving for extended periods across
sand, mud, gravel, water or insimilarly dirt y
conditions, have the brake discs, wheels,
brake pads/lin ings and axlejoints checked
and cleane d.
XIfyou detect strong vibrations after off-road
travel, check for foreign objects inthe wheels
and drive train and remove them ifnecessary.
Foreign objects can disturb the balance and
cause vibrations.
Driving on sand
Observe the foll owing rules when driving on
sand:
RSelect the Offroa ddriv e program (veh icles
wit h Off-Road Engineering package)
(
Ypage 237).
RSelect the Offroa ddriv e program (veh icles
wit hout Off-Road Engineering package)
(
Ypage 237).
RSelect a higher veh iclelevel.
RAvoid high engine speeds.
RUse the left-hand steering wheel paddle
shifter to shift to a lower gear appropriate to
the terrain.
RDrive quickly to overcome the rolling resist-
ance. Otherwise the vehicle's wheels could
become stuck inloose ground.
RDrive inthe tracks of other veh iclesif possi-
ble. Make sure that:
-the tire ruts are not too deep.
-the sand issuff iciently firm.
-the ground clearance of the veh icle issuf-
ficient.
Tire ruts and gravel roads
!Check that the ruts are not too deep and
that your vehicle has sufficient clearance.
Otherwise, your vehicle could bedamaged or
bottom out and get stuck.
Observe the foll owing rules when driving along
ruts inoff-road terrain or on roads with loose
gravel:
RSelect the Offroa ddrive program (vehicles
wit h Off-Road Engineering package)
(
Ypage 237).
RSelect the Offroa ddrive program (vehicles
wit hout Off-Road Engineering package)
(
Ypage 237).
RSelect a higher vehicle leve l.
RAvoid high engine speeds.
RShift to a lower gear using the left-hand steer-
ing wheel paddle shifter.
RDrive slowly.
RWhere ruts are too deep, drive with the
wheels of one side on the center grassy area,
if possible.
Driving over obstacles
!Obstacles could damage the floor of the
vehicle or components of the chassis. Ask
passengers for guidance when driving over
large obstacles. The passenger should always
keep a safe distance from the vehicle when
doing so inorder to avoid injury as a result of
unexpected vehicle movements. After driving
off-road or over obstacles, check the vehicle
for possible damage, especially to the under-
body and the components of the chassis.
Driving tips189
Driving and parking
Z
Information in the multifunction display
If Steering Assist and Stop&Go Pilot are activa-
ted but not ready for a steering intervention,
steering wheel symbol :appears ingray. Ifthe
system pro vides you with support bymeans of
steering interventions, symbol :isshown in
green.
Deactivating Steering Assist and Stop&Go
Pilot
XDeactivate the DI STRONIC PLUS withSt eer-
ing Assist and Stop&Go Pilot function using
the on-board computer (
Ypage 272).
The DTR+: Steering Assistant Offmes-
sage appears inthe multifunction display.
St eering Assist and Stop&Go Pilot are deac-
tivate d.
When DI STRONIC PLUS isdeactivated or not
available, Steering Assist and Stop&Go Pilot are
deactivated automatically.
Level control (vehicles with the Off-
road Engineering package)
Important safety notes
Level control adapts the veh iclelevel automat i-
cally to the current operating and driving situa-
tion. This results inreduced fuel consumption
and impr oved handlin g.
Make changes to the veh iclelevel while the
veh icle is in motion. This enables the veh icleto
adjust to the new level as quickly as possible.
The veh iclelevel may change vis ibly ifyou park
the veh icleand the outside temperature
changes. Ifthe temperature drops, the veh icle
level islower; with an increase intemperature,
the veh icle leve l rises.
If you unlock the veh icleor open a door, the
veh icle begins to compensate for load discrep-
ancies whilestillparked. However, for signifi-
cant level changes, such as after the veh iclehas
been stationary for a long period, the engine
must beon. For safety reasons, the veh icle isonly
lowered when the doors are closed. Low-
ering isinterrupted ifa door isopened, and it
continues once the door has been closed.
Further information about "Driving off-road"
(
Ypage 186).
GWARNING
When the vehicle isbeing lowered, people
could become trapped if their limbs are
between the vehicle body and the wheels or
underneath the vehicle. There is a risk of
injury.
Make sure no one is underneath the vehicle or
in the immediate vicinity of the wheel arches
when the vehicle isbeing lowered.
GWARNING
When you drive with the vehicle raised, the
driving characteristics could beimpaired by
the vehicle's raised center of gravity. The vehi-
cle could rollover more easily, for example on
a bend. Thereisa risk of an accident.
Always select as low a vehicle level as possi-
ble and adjust your driving style.
GWARNING
When you drive with the chassis lowered or
raised, the vehicle's braking and driving char-
acteristics can besignificantly impaired. You
could also exceed the permissible vehicle
height if the chassis is raised. There is a risk of an accident.
Adjust the vehicle level before pulling away.
GWARNING
Due to the high center of gravity, the vehicle
may start to skid and roll over in the event of
an abrupt steering maneuver and/or when
the vehicle's speed is not adapted to the road
conditions. There is a risk of an accident.
Always adapt your speed and driving style to
the vehicle's driving characteristics and to the
prevailin g road and weather conditions.
!When driving on extremely rough terrain,
select a high vehicle level in good time. Make
sure there isalways sufficient ground clear-
ance. You will otherwise damage the vehicle.
Driving systems201
Driving and parking
Z
Setting the vehicle to normal level:
XStart the engine.
XPress selector wheel:.
Selector wheel :extends.
XTo lower the vehicle: turn selector wheel :
counter-clockwise ?.
The vehicle is lowered.
If one or more indicator lamps =are on:
XTurn selector wheel :counter-clockwise ?
until all indicator lamps =that are lit start to
flash.
The vehicle is lowered to normal level. As
soon as the next lowest level is reached, the
indicator lamp stops flashing and goes out.
Offroad levels
General notes
Only select an offroad level when this is appro-
priate for road conditions. Otherwise, fuel con-
sumption increases and handling may be affec-
ted.
You can select from the following:
ROffroad level 1 at speeds up to 60 mph
(96 km/h)
ROffroad level 2 at speeds up to 40 mph
(64 km/h)
ROffroad level 3 at speeds up to 12 mph
(20 km/h)
If you select an offroad level when driving at too
high a speed, the Drive
MoreSlowlymessage
appears in the multifunction display.
Offroad level 3 is only suitable for driving on
extremely difficult off-road terrain under partic-
ularly rough conditions.
RAdjust your driving style to the altered han-
dling characteristics.
RDo not drive at speeds above 12 mph
(20 km/h).
Indicator lamps =for the desired offroad level
flash:
Rthe lower indicator lamp flashes, offroad
level 1 is selected
Rthe lower and center indicator lamps flash,
offroad level 2 is selected
Rall three indicator lamps flash, offroad level 3
is selected
The vehicle adjusts to the offroad level selected.
As soon as an offroad level is reached, the cor-
responding indicator lamp stops flashing and
lights up constantly.
Raising the vehicle
Set the vehicle level using the selector wheel.
XTo raise the vehicle: turn selector wheel :
clockwise ;.
The vehicle is raised to offroad level 1 by 1.2 in
(30 mm) compared to the normal level.
During the adjustment, the Vehicle rising
message, for example, appears in the multifunc-
tion display.
If you press the%ora button on the
multifunction steering wheel, the message will
disappear.
iUp to offroad level 2, you can hide the mes-
sages using the %ora button on the
multifunction steering wheel.
While the adjustment from offroad level 2 to off-
road level 3 is taking place, you will see a mes-
sage such as the following in the multifunction
display: Vehicle rising Max. speed
12 mph (20 km/h).
The Max.
speed12 mph(20 km/h)message
draws your attention to the maximum speed
permitted for offroad level 3.
If you drive above 12 mph (20 km/h) at offroad
level 3, you will see the following message
Driving systems203
Driving and parking
Z