DEF
Note
s on DEF
* NO
TEWhen you open the DEF tank,
small amounts of ammonia vapor may
escape. #
Only fill th e DEF tank in well-ventilated
areas. #
Do not let DEF come into con tact wi th
skin, eyes or clo thes. #
Keep DEF away from children. *
NO
TEDo not ingest DEF. If DEF is swallo
wed: #
Immediately rinse out your mouth thor‐
oughly. #
Drink plenty of water. #
Seek medical attention immediately. *
NO
TEDama gecaused byadditives in
DEF or bydiluting DEF The DEF
exhaust gas af tertre atment sy stem
could be destr oyed bythefo llowing:
R Additives in DEF
R Diluting DEF #
Only use DEF in accordance with ISO
222 41 . #
Do not mix additives. #
Do not dilu teDEF. *
NO
TEDama geand malfunctions caused
by impurities in DEF Impurities in DEF
result in thefo llowing:
R Higher emission values
R Damage tothe catalytic con verter
R Engine damage
R Malfunctions in the DEF exhaust gas
af te rtre atment sy stem #
Avoid impurities in DEF. *
NO
TEDEF residue cr ystallizes af ter
some time. Remo veDEF residue. #
Immediately rinse su rfaces that come in
con tact wi thDEF when filling with
wate r. #
DEF can also be remo ved with a damp
clo thand cold water. #
If DEF has already cr ystallized, clean
using a spon geand cold water. DEF is a li
quid urea solution used forex haust gas
af te rtre atment of diesel engines. In order forthe
ex haust gas af tertre atment tofunction properly,
only use DEF in accordance with ISO 222 41 .
DEF has thefo llowing properties:
R non-t oxic
R colorless and odorless
R non-flammable
DEF availability:
R you can ha veDEF added byfast service at a
qu alified specialist workshop, e.g. an author‐
ized Mercedes-Benz Center.
R DEF is available at numerous gasst ations via
DEF filling pumps.
R alternatively, DEF is available at qualified spe‐
cialist workshops, e.g. an authorized
Mercedes-Benz Center, and at numerous gas
st ations as a DEF refill canis ter or DEF refill
bottle.
% DEF freezes at a
temp erature of appr ox‐
imately 12.2 °F (-11 °C). The vehicle is equip‐
ped with a DEF preheating sy stem at thefa c‐
to ry. This means that winter operation is also
ensured forte mp eratures below 12.2 °F
(-11 °C). If you add DEF at temp eratures
below 12.2 °F (-11 °C), the DEF le vel in the
instrument clus ter may not be displa yed cor‐
re ctly. If the DEF is frozen, drive for at least
20 minutes and then park theve hicle for a
minimum of 30 seconds, so that the le vel is
cor rectly displa yed. In extreme winter condi‐
tions, the time needed todetect theto p-up
amount may be considerably longer. Park the
ve hicle in a warm garage tospeed up this
process.
% Ensure
the connection between there fill con‐
ta iner and vehicle filler neck does not drip. 13 6
Driving and pa rking
%
It is
recommended that Active Brake Assi stis
alw ays left activated. #
Select a setting.
The last active setting is selected automatically
eve rytime the engine is star ted.
Exception: if the last setting wasOff, theMedium
setting will be automatically activated the next
time the engine is star ted.
Deactivating Active Brake Assi st
% It is
recommended that Active Brake Assi stis
alw ays left activated. #
Select Off.
The dis tance warning function and autono‐
mous braking function are deactivated.
The next time the engine is star ted, theMedium
setting will be automatically activated.
% When
Active Brake Assi stis deactivated, the
00D4 symbol appears inthest atus area of
th e multifunction displa y.Cruise control
Fu
nction of cruise control
Cruise cont rol accelerates and brakes theve hicle
automatically in order tomaintain a pr eviously
st ored speed.
If yo u accelerate toove rtake, forex ample, the
st ored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal af terove rtaking,
cruise control will resume speed regulation back
to thestored speed.
Cruise contro l is operated using the cor respond‐
ing steering wheel buttons. You can store any
ro ad speed abo ve15 mp h (20 km/h).
If yo ufa ilto adapt your driving style, cruise con‐
trol can neither reduce therisk of an accident nor
ove rride the la wsof ph ysics. It cannot take into
account road, weather or traf fic conditions.
Cruise control is only an aid. You are responsible
fo rth e dis tance totheve hicle in front, forve hicle
speed, braking in good time and forst ay ing in
yo ur lane.
Displa ysinthe multifunction display
The status of cruise control and thestored speed
are shown in the multifunction displa y. Displ
ayinthe Instrument Display (color display)
1 Cruise cont rol is selec ted
2 Set speed gr ay: speed is stored, cruise con‐
trol is deactivated
3 Set speed green: speed is stored, cruise con‐
trol is activated
Sy stem limitations
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
On long and steep downhill gradients, you should
ch ange down toa lo werge ar in good time. Take
particular no teofthis when driving a laden vehi‐
cle. By doing so, you will make use of the
engine's braking ef fect. This relie vesth e load on
th e brake sy stem and pr events the brakes from
ove rheating and wearing tooqu ickl y.
Do not use cruise control in thefo llowing situa‐
tions:
R In traf fic situations whe refrequent speed
ch anges are requ ired, e.g. in heavy traf fic or
on winding roads.
R On slippe ryroads. Accele rating can cause the
drive wheels tolose traction and theve hicle
could then skid.
R Ifyo u are driving when visibility is poor.
Operating cruise cont rol &
WARNING Risk of accident due tostored
speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates. #
Take into account the tra ffic situation
before calling up thestored speed. Re
quirements:
R ESP ®
is activated, but may not inter vene.
R The driving speed is at least 15mph
(20 km/h). Driving and parking
151
Ac
tivating/deactivating ADR #
Toactivate: whilethe engine is running,
press switch 1.
The Working Speed Governor Active message
appears in the multifunction displa y.#
Todeactivate: whilethe engine is running,
press switch 2.
ADR goes out au tomatical lyin thefo llowing situa‐
tions:
R Youre lease the parking brake.
R You depress the brake pedal.
R The vehicle mo ves.
R The contro l unit detects a malfunction.
Ad justing ADR #
Engage po werta ke -off or acti vate ADR. #
Toincrease: press switch 1. #
Toreduce: press switch 2. Tr
ailer operation Note
s on trailer operation &
WARNING Risk of accident‑ and injury if
th e load is exceeded
If yo uexc eed the permitted load when using
th era ck ,th era ck system may disconnect
from theve hicle and endanger other road
users. #
Always comply with the permitted load
when using thera ck. &
WARNING Swerving of theve hicle/
trailer combination due toinc reased
speed
If th eve hicle/trailer combination swer ves,
yo u can lose control of it.
The vehicle/trailer combination can even tip
ove r. #
Under no ci rcums tances should you try
to inc rease the speed tostra ighten the
ve hicle/trailer combination. #
Reduce speed and do not counter-s teer. #
If necessar y,apply the brakes. &
WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may overheat.
This increases the braking dis tance and the
brake sy stem may evenfa il. #
Never use the brake pedal as a foot re st. #
Do not depress the brake pedal and the
accelerator pedal at the same time
while driving. &
WARNING Danger of accident due to
unsuitable ball coupling
If yo u ins tall an unsuitable ball coupling, over‐
loading of the trailer hitch and rear axle will
be there sult. This is particularly the case if
th e ball coupling is relatively long or angled
dif fere ntl y.
The handling characteristics may be heavily
impaired and the trailer can become
de tach ed. There is a risk of fata l injur y. #
Only ins tall a ball coupling that meets
th e permitted dimensions and has been Driving and parking
16 9
Yo
ur vehicle will beha vediffere ntly wi tha trailer
re lative towithout a trailer:
R The vehicle/trailer combination will be heav‐
ier.
R The vehicle/trailer combination will be
re stricted in its acceleration and climbing
ability.
R The vehicle/trailer combination will ha vean
inc reased braking dis tance.
R The vehicle/trailer combination will be more
susceptible tocrosswind gu sts.
R The vehicle/trailer combination will requ ire
more sensitive steering.
R The vehicle/trailer combination will ha ve a
lar ger turning circle.
This may impair theve hicle's driving characteris‐
tics.
When driving with a vehicle/trailer combination,
alw ays adapt your speed tothe cur rent road and
we ather conditions. Drive carefull y.Ke ep a suf fi‐
cient safe dis tance.
Co mply withthe maximum speed of 49 mph
(80 km/h) or 62 mph (100 km/h), even in coun‐
tries in which higher speeds are permitted for
ve hicle/trailer combinations.
Comply with the legally prescribed maximum
speed forve hicle/trailer combinations in forc e in
th e count ry,st ate or Canadian pr ovince in ques‐
tion. Before setting off, consult the trailer's vehi‐
cle documents tosee the maximum permissible
speed foryo ur trailer.
At tach only an appr oved trailer hitch to yourvehi‐
cle. Use only a ball neck that has been appr oved
fo ryo ur vehicle. Further information about availa‐
bility and ins tallation of the trailer electrics is
av ailable from any qualified specialist workshop.
The trailer hitch is one of the most impor tant
ve hicle parts forro ad saf ety. Comply with the
instructions on operating, maintaining and servic‐
ing in the manufacturer's operating instructions.
% Yo
ur vehicle's bumpers are not suitable for
ins talling de tach able trailer tow hit ches.
Do not attach any rented trailer tow hit ches or
any other de tach able trailer tow hit ches tothe
bumpers.
% When using a trailer,
remember that
PA RKTRONIC is available only toa limited
ex tent, if at all.
% The height of
the ball head will change
depending on theve hicle's load. In this case, use a trailer with a height-adjus
table dr aw‐
bar.
Driving no tes
The maximum permissible speed forve hicle/
trailer combinations depends on the type of
trailer. Before setting off, consult the trailer's
ve hicle documents tosee the maximum permissi‐
ble speed foryo ur trailer.
Yo ur vehicle will beha vediffere ntly wi tha trailer
re lative towithout a trailer, and will consume
more fuel. In the case of a long and steep
descent, you must select shift range 3,2or 1in
good time.
% This also applies if
the cruise cont rol is
switched on.
Yo u will thereby make use of the engine's braking
ef fect and will not ha vetobrake as of tento con‐
trol the speed. This will take some of thest ra in
off the brake sy stem and pr event the brakes from
ove rheating and wearing tooqu ickl y.Ifyo u need
additional braking, depress the brake pedal inter‐
mittently rath er than continuousl y.
Driving tips
If th e trailer sw ays, remember thefo llowing
points:
R Do not accelerate under any circums tances.
R Do not counter steer.
R If necessar y,apply the brakes.
% Yo
u can pr eventthe trailer from sw aying and
rock ingbyretrofitting stabilizer bar or trailer
st ability programs. You can obtain fur ther
information from an authorized Mercedes-
Benz Center.
When you are driving with a trailer, comply with
th efo llowing points:
R Maintain a greater dis tance than when driving
without a trailer.
R Avoid braking abruptl y.If possible, brake gen‐
tly firs t of all so that the trailer closes up
behind your vehicle. Then, increase the brak‐
ing forc era pidl y.
R The values given forst art-off gradeability
re ferto sea le vel. When driving in moun tain‐
ous areas, no tethat engine output, and there‐
fo re start-off gradeability, will dec rease with
inc reasing altitude. Driving and parking
171
Calling up settings on
the on-boa rdcompu ter On-board computer:
4 Settings
The following ent ries can be set on the Settings
menu:
R Light
- Setting Instrument lighting
R Vehicle
- Switching Regensensor (Rain sensor) on
and off
R Setting Heating
R Display and Operation
- Switching permanent Display DEV Level
on and off #
Select an entry and confirm the selection. #
Make the necessary changes. In
stru ment Display and on-board computer 18 3
#
Neverto uch the danger zone sur round‐
ing moving component parts, e.g. the
ro tation area of thefa n. #
Remo vejewe lry and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. If
yo u ha vetocar ryout any workinthe engine
compartment, touch only thefo llowing compo‐
nents:
R Hood
R Engine oil filler opening cap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap #
Open the hood (/ page278). #
Remo vedirt from water drain valve 2 of air
intake box 1. Draining
the fuel filter &
WARNING Danger of fire and explosion
due tofuel
Fu els are highly flammable. #
It is essential toavoid fire , open flames,
smoking and creating spar ks. #
Before filling up, switch off the engine,
and, if applicable, the auxiliary heating. &
WARNING Risk offire and explosion due
to fuel
Fu els are highly flammable. There is a risk of
fi re and explosion due tocontact wi thhot
component parts. #
Allow the engine and theex haust sys‐
te m to cool down. *
NO
TEEngine damage due todela yed
drainage of the fuel filter Ve
hicles with a diesel engine: delayed
drainage of the fuel filter can lead toengine
damage.
If th e003A indicator lamp lights up, drain the
fuel filter immediately. +
ENVIRONMENTAL
NOTEEnvironmental
pollution due todisposal in a non-envi‐
ro nmental ly-friendly manner #
Dispose of thewate r/fuel mixture in an
environmentally-friendly manner. OM642 engine
#
Park theve hicle in a safe location and secure
it against rolling away. #
Switch off the auxiliary heating
(/ page 106). #
Switch off the engine. #
Open the hood (/ page278). Mai
ntenance and care 285
#
Place a suitable collector beneath drain hose
2. #
Switch on the ignition. #
Open drain scr ew1 until thewate r/fuel
mixture emerges from drain hose 2.#
Close drain scr ew1 as soon as around
0.2 qt (0.2 liter) of thewate r/fuel mixture has
been collected.
Af ter 30 seconds, the electrical fuel pump
automatically stops the discharge of the
wate r/fuel mixture. #
After draining, switch off the ignition. #
Dispose of the collected water/fuel mixture
in an environmentally responsible manner,
e.g. at a qualified specialist workshop. #
Check that drain scr ew1 has been closed.
If th e engine is running while drain scr ew1
is open, you will lose fuel thro ugh drain hose
2. #
Close the hood (/ page278). #
003A The indicator lamp does not go out
af te r draining: drainthe fuel filter again. #
003AThe indica tor lamp does not go out
af te r the second draining: consult aquali‐
fi ed specialist workshop.
Mercedes-Benz recommends that you ha vethe
fuel filter drained at a qualified specialist work‐
shop. Cleaning and care
Note
s onwashing theve hicle in an automatic
car wash &
WARNING Risk of accident due to
re duced braking ef fect af terwa shing the
ve hicle
The braking ef fect is reduced af terwa shing
th eve hicle. #
Afterth eve hicle has been washed,
brake carefully while paying attention to
th e traf fic conditions until the braking
ef fect has been ful lyrestored. *
NO
TERisk of damage tothe paintwork
and plastic components If
yo uwa sh your vehicle in Touchless Auto‐
matic Car Wash sy stems that use special
cleaning agents, the cleaning agents used can damage
the paintwork or plastic components
of theve hicle. #
Do not wash theve hicle in Touchless
Au tomatic Car Wash sy stems that use
special cleaning agents. Make sure
that the automatic car wash is suitable
fo rth e size of theve hicle.
Before washing theve hicle in an automatic car
wa sh, fold in the outside mir rors and remo veany
additional antennas. Otherwise, the outside mir‐
ro rs, antennas or theve hicle itself could be dam‐
aged.
Make sure any additional antennas are re-ins tal‐
led and that the outside mir rors are fully folded
out again when you lea vethe automatic car
wa sh.
To avo id damage to yourvehicle, obser vethefo l‐
lowing before using an automatic car wash:
R the side windo wsand the sliding window are
comple tely closed.
R the blo werfo rve ntilation and heating is
switched off.
R the windshield wiper switch is in position 005A.
If th eve hicle is very dirty, wash off excess dirt
before cleaning theve hicle in an automatic car
wa sh.
% Re
moving thewa x from the windshield and
th e wiper rubbers af terwa shing theve hicle,
will help avoid smearing and reduce wiper
noise. Note
s on use of a po werwa sher &
WARNING Risk of accident when using
high-pressu recleaning equipment wi th
ro und-spr aynozzles
The wate r jet from a round-spray nozzle (dirt
grinder) may cause damage totires and sus‐
pension components that is not visible.
Components damaged in this wa y may fail
unexpec tedly. #
Do not use high-p ressure cleaning
equipment with round-spray nozzles to
clean your vehicle. #
Damaged tires or suspension compo‐
nents must be replaced immediatel y. Ne
ver use a po werwa sher in theve hicle interior.
The pressurized water created bythe po wer 286
Maintenance and care
Note
s on cleaning and car ePreve nting damage totheve hicle
Ste ps
R
Clean the electrically operated steps
and their housing with a po wer
wa sher.
R After cleaning, spr aythe lateral
guides with silicone spr ay.
R Clean thesteps in the bumper with a
po we rwa sher. Do not use oil or grease as a lubricant.
Aluminum
dropsides R
Brush down the aluminum dropsides
with water and a neutral or mild alka‐
line cleaning agent. Do not use abrasive cleaning agents
to
clean the dropsides. Note
s on interior care &
WARNING Risk of inju ryfrom pla stic
parts breaking off af terth e use of sol‐
ve nt-based care products
Ca reand cleaning products con taining sol‐
ve nts can cause su rfaces in the cockpit to
become porous.
When the airbags are deplo yed, plastic parts
may break away. #
Do not use any care or cleaning prod‐
ucts containing sol vents toclean the
cockpit. &
WARNING Risk of inju ryor death from
bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, forex ample, cause seat belts totear
or fail in an accident. #
Never blea chor dye seat belts. Obser
vethefo llowing no tes: Note
s on cleaning and car ePreve nting damage totheve hicle
Seat belts Clean with lukewarmsoapy water. R
Do not use chemical cleaning
agents.
R Do not dry the seat belt byheating
abo ve176°F (80°C) or in direct sun‐
light.
Display Cleanthe sur face carefully wi tha mic ro‐
fi ber clo thand LCD/TFT displ aycare
product. R
Switch off the display and let it cool
down.
R Do not use any other agents.
Plastic trim R
Clean with a damp microfiber clo th.
R For heavy soiling: use care product
re commended for Mercedes-Benz . R
Do not af fix st icke rs,fi lms or similar.
R Do not allow tocome into contact
wi th cosmetics, insect repellent and
sun creams.
Re alwo od/
trim ele‐
ments R
Clean with a mic rofiber clo th.
R Blackpiano-lacquer look: clean with
a damp clo thand soapy water.
R For heavy soiling: use care product
re commended for Mercedes-Benz . Do not use sol
vent-based cleaning
agents, polishes or waxes. 290
Maintenance and care