
To
protect against overheating, the seat heating
may be temp orarily deactivated af ter it is
switched on repeatedly.
* NO
TEDama getothe seats caused by
objects or documents when the seat
heater is switched on When
the seat heater is switched on, over‐
heating can occur due toobjects or docu‐
ments placed on the seats e.g. seat cushions
or child seats. This could cause damage to
th e seat sur face. #
Make sure that no objects or docu‐
ments are on the seats when the seat
heater is switched on. Re
quirements:
R The po wer supp lyhas been switched on. #
Toswitch on: press button 1.
All indicator lamps on the button light up. #
Tolowe r the le vel:press button 1until the
re qu ired heating le vel is reached.
Depending on the heating le vel, one tothree
indicator lamps light up. #
Toswitch off: press button 1until all indi‐
cator lamps are off.
% The seat heating automatically switches back
out of
theth re e heating le vels af ter 8, 10and
20 minutes until the seat heating switches
off. Ad
justing the steering wheel &
WARNING Risk of inju ryfrom adju sting
th eve hicle settings while theve hicle is in
motion
Yo u could lose control of theve hicle in the
fo llowing situations:
R ifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
R ifyo ufast enyour seat belt while theve hi‐
cle is in motion #
Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt. &
WARNING Risk of entrapment forch il‐
dren when adjusting thesteering wheel
Children could injure themselves if they
adjust thesteering wheel. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle. 1
Lever
2 Steering column height
3 Steering column fore -and-aft adjustment #
Toadjust thest eering wheel: swing lever
1 down as far as it will go.
The steering wheel is unloc ked. Seats and
stowage 71

#
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. #
Open a window on the windward side of
th eve hicle toensure an adequate sup‐
ply of fresh air. &
WARNING Risk offire due tohot station‐
ary heater components
When thest ationary heater is swit ched on,
parts of theve hicle can become very hot, e.g.
th est ationary heater exhaust sy stem.
Flammable materials such as lea ves, grass or
twigs may ignite if they come into contact
wi th:
R hot parts of thest ationary heater exhaust
sy stem
R theex haust gas itself
There is a risk of fire. #
When thest ationary heater is swit ched
on, make sure that:
R Hot vehicle parts do not come into
contact with flammable materials.
R The exhaust gas can flow out of the
st ationary heater exhaust pipe
unhindered.
R The exhaust gas does not come into
contact with flammable materials. *
NO
TEDama getothe auxiliary heating If
th e auxiliary heating is not used for an
ex tended pe riod of time, it can be damaged. #
Switch the auxiliary heating on for
around ten minu tes at least once a
month. *
NO
TEDama getothe auxiliary heating
due toove rheating If
th e hot air flow is bloc ked, the auxiliary
heating can overheat and switch off. #
Do not block the hot air flow. %
Ve
hicles with modified fuel displa ys:if an
ex tern ally operated consumer is connec ted
via the cable forth e auxiliary heater, this is
not take n into conside ration on the "range
re maining" display of the on-board computer. In
this case, obser vethe fuel displa y.The fuel
display pr ovides the cur rent le vel.
If yo u are transpo rting hazardous materials, com‐
ply with there leva nt sa fety regulations. Alw ays
place objects at a suf ficient dis tance from the
outlet opening of the auxiliary heating.
Au xilia ryheating works independently of the
engine and complements the climate cont rol sys‐
te m in theve hicle. Auxilia ryheating heats the air
inside theve hicle tothe set temp erature. Hot-water auxiliary heater
Fu
nction of the hot- water auxiliary hea ter
The hot-water auxiliary heater complements your
ve hicle's climate contro l system, and has a
heater boos ter,auxiliary heating and auxiliary
ve ntilation function. In addition, the auxiliary
heating sy stem heats the engine coolant topro‐
te ct the engine and sa vefuel during thewa rming-
up phase. The auxiliary heating heats the air
inside theve hicle tothe set temp erature. It is not
dependent on the heat output of theru nning
engine. The auxilia ryheating is operated directly
using theve hicle's fuel. Forth is reason, the fuel
ta nk must ha vebeen filled abo vethere ser vefuel
le ve l so that the auxiliary heating can work. The
auxilia ryheating automatically adapts its operat‐
ing mode tothe outside temp erature and
we ather. It is therefore possible that the auxiliary
heating may switch from ventilation toheating
mode or from heating toventilation mode. When
th e engine is running, auxilia ryventilation is not
acti ve.Au xilia ryheating automatically switches
itself off af ter a maximum of 50 minutes. Yo u
cannot use the "auxiliary ventilation" ope rating
mode tocool the air inside theve hicle tobelow
th e outside temp erature. Auxilia ryheating helps
to heat up theve hicle while the engine is running
and at low outside temp eratures.
Operating the hot-wa ter auxiliary heater draws
po we r from theve hicle batter y.Therefore, drive a
re asonably long dis tance af ter heating or ventilat‐
ing theve hicle twice in succession at most.
Au xilia ryheating can be activated only at temp er‐
atures below 40 °F (4.5 °C).
Switching the hot- water auxiliary heating on
and off with the button
Re quirements:
R The fuel tank is filled abo vethere ser vefuel
le ve l. 100
Climate cont rol

&
WARNING Risk of accident when switch‐
ing off the ignition when driving
If yo u swit choff the ignition while driving,
saf ety functions are restricted or no longer
av ailable. This may af fect the po werst eering
sy stem and the brake forc e boosting, for
ex ample.
Yo u will then need touse considerably more
fo rc eto steer and brake. #
Do not switch off the ignition while driv‐
ing. &
DANG ER Risk of fata l injuries due to
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and can lead topoisoning. #
Never lea vethe engine running in an
enclosed space wi thout suf ficient venti‐
lation. &
DANG ER Risk of fata l injury due topoi‐
sonous exhaust gases
If th eta ilpipe is bloc ked or suf ficient ventila‐
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi‐
cle. This is the case if theve hicle getsst uck
in sn ow,fo rex ample. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. #
Open a window on the windward side of
th eve hicle toensure an adequate sup‐
ply of fresh air. &
WARNING Risk of accident and inju ry
due tobeing under the influence of alco‐
hol and drugs while driving
Driving when under the influence of alcohol
and/or drugs is an extreme lydangerous com‐
bination. Even small quantities of alcohol or
drugs may af fect your reflexe s, perception
and judgment.
The probability of a serious or evenfa ta l acci‐
dent greatly inc reases if you drive when
under the influence of alcohol or drugs. #
Do not drink alcohol or take drugs while
driving, and do not allow an yone todrive who has been drinking alcohol or
taking
drugs. &
WARNING Risk of accident and injury
from ope rating mobile communications
equipment
If yo u operate mobile communication equip‐
ment when driving, you will be distracted
from the traf fic situation. This could also
cause youto lose control of theve hicle.
The probability of a serious or evenfa ta l acci‐
dent inc reases greatly if you operate mobile
communication equipment when driving. #
Only operate mobile communication
equipment when theve hicle is station‐
ar y. Fo
ryo ur ow n sa fety, al ways obser vethefo llowing
points when operating mobile communications
equipmen t:
R Obser vethe legal requ irements forth e coun‐
try in which you are driving.
R While driving, on lyoperate mobile communi‐
cations equipment when the tra ffic conditions
permit it. You may otherwise be distracted
from the traf fic conditions and cause an acci‐
dent, inju ring yourself and others. &
WARNING Risk of accident due toove r‐
heated brake sy stem
If yo ure st your foot on the brake pedal during
while 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 press the brake pedal and accel‐
erator pedal simultaneously while driv‐
ing. 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. 106
Driving and pa rking

Information about transport
byrail
Tr ansporting your vehicle byrail may be subject
to cer tain restrictions or requ ire special meas‐
ures tobe take n in some countries due tovarying
tunnel heights and loading standards.
Yo u can obtain information about this from any
authorized Mercedes-Benz Center.
Note s on brakes &
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift down on slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction. #
Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect. &
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. Downhill
gradients
On long and steep downhill gradients you should
obse rveth efo llowing instructions:
R invehicles with an automatic transmission,
shift down toshift ranges 2or 1in good time
so that the engine is running at a medium to
high engine speed (/ page117).
% Cha
nge the shift range in good time when
cruise control is acti vated. Obser vethe driv‐
ing tips (/ page105).
Yo uth ereby make use of the braking ef fect of the
engine and do not ha vetobrake as of tento main‐
tai nth e speed. This relie vesth e load on the
service brake and pr events the brakes from over‐
heating and wearing tooqu ickl y. Heavy and light loads &
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. If
th e brakes ha vebeen subjected toa heavy
load, do not stop theve hicle immediately. Drive
on for a short while. The brakes cool down more
qu ickly in the air flow.
If th e brakes ha vebeen used only moderatel y,
yo u should occasionally test their ef fectiveness.
To do this, brake more firm lyfrom a higher speed
while paying attention tothe tra ffic conditions.
The brakes will grip better as a result.
We tro ad sur faces
If yo u ha vebeen driving for a long time in heavy
ra in without braking, there may be a dela yed
re sponse when youfirs t apply the brakes. This
may also occur af ter driving thro ugh a car wash
or deep water.Yo u must depress the brake pedal
more firm ly. Main tain a longer di stance tothe
ve hicle in front.
While paying attention tothe tra ffic conditions,
yo u should brake theve hicle firm ly af ter driving
on a wetro ad sur face or thro ugh a car wash. This
heats the brake discs so that they dry more
qu ickl y,which pr otects them against cor rosion.
Limited braking ef fect on salt-trea tedro ads:
R a layer of salt on the brake discs or brakepads
can increase braking dis tances conside rably,
or braking may happen on only one side
R maintain an especially lar gesafe dis tance to
th eve hicle in front
To remo vethe la yer of salt:
R apply the brakes from time totime, paying
attention totraf fic conditions
R carefully dep ress the brake pedal at the end
of a journey and af terth est art of a new jour‐
ney
Checking the brakepad thickness
In addition tomonitoring using the brakepad wear
sensor, regular lymonitor and check all of the 108
Driving and pa rking

0047
Use
the engine's braking ef fect on extremely
st eep downhill gradients and on long down‐
hill stre tches. Using kickdown
#
For maximum acceleration: depressthe
accelerator pedal be yond the pressure point. #
Ease off the accelera tor pedal once the
desired speed is reached. All-wheel drive
Note
s on all-wheel drive All-wheel drive ensures permanent drive
for all
fo ur wheels, and toget her with ESP ®
it impr oves
th e traction of theve hicle.
The traction contro l ofthe all-wheel drive also
ta ke s place via the brake sy stem. Therefore, the
brake sy stem can overheat during extreme off-
ro ad use. In this case, ease off the accelerator
pedal or stop toallow the brake sy stem tocool
down.
If a driven wheel spins due toinsuf ficient trac‐
tion, obser vethefo llowing no tes:
R When pulling away, make use of the traction
cont rol integrated in ESP ®
. Depress the
accelerator pedal as far as necessar y.
R Take your foot off the accelera tor pedal,
slowly, while theve hicle is in motion.
In wintry driving conditions, alw ays use winter
tires (M+S tires) and, if necessar y,snow chains
(/ page 233). Only in this wa y can the maximum
ef fect of all-wheel drive be achie ved.
Use DSR (Downhill Speed Regulation) when driv‐
ing downhill off-road (/ page120).
If yo ufa ilto adapt your driving style or if you are
inat tentive, the all-wheel drive sy stem can neither
re duce therisk of an accident nor override the
la ws of ph ysics. The all-wheel drive sy stem can‐
not take road, weather and traf fic conditions into
account. The all-wheel drive sy stem is only an
aid. You are responsible for maintaining a safe
dis tan ce from theve hicle in front, forve hicle
speed, for braking in good time and forst ay ing in
lane. *
NO
TERisk of damage tothe driv etra in
and the brake sy stem If
yo u operate vehicles with all-wheel drive on
a one-axle test st and, you may damage the
driv etra in or the brake sy stem. #
A function or per form ance test should
only be car ried out on a two-axle test
st and. #
Ifyo u wish tooperate theve hicle on
such a test st and, please consult a
qu alified specialist workshop in
advance. *
NO
TERisk of damage tothe transfer
case If
yo uto w theve hicle with a raised axle, the
trans fer case can getdamaged. Such damage
is not co veredby Mercedes-Benz Limited
Wa rrant y. #
Neverto w theve hicle with a raised axle. #
Only tow theve hicle with all wheels on
th e ground or fully raised. #
Notethe instructions on towing the
ve hicle with full contact with the ground
fo r all wheels. Engaging all-wheel drive
Conditions
for en gaging/disengaging
Yo u can engage and deactivate the all-wheel drive
when stationary or while driving slowl y.
When stationar y,thefo llowing must be obser ved:
R The engine is running.
R The steering wheel in thest ra ight-ahead posi‐
tion.
If th e all-wheel drive cann otbe engaged when
st ationary: #
Vehicles with automatic transmission:
shift the selector le ver from 005Cto005B from
005B to005C from 005Cto005E and back to005C .
Engaging and disengaging the all-wheel drive
can be made easier in this wa y.
Obser vethefo llowing when driving slowly:
R The engine is running.
R The vehicle is not tr aveling fasterthan
6.2 mph (1 0 km/h).
R The vehicle is not being driven around a bend. 11 8
Driving and pa rking

Problems with
the electronic le vel control Problem
Possible causes/consequences and 0050 0050Solutions
Yo u cannot raise or lo wer
th eve hicle le vel when
st ationar y. The compressor is in danger of
overheating. Af terre peatedly raising and
lo we ring theve hicle, electronic le vel control (play pr otection) is deactiva‐
te d. #
Tryto set theve hicle le vel manually again af ter appro ximately
one minute.
Electri c level control has been deactivated due tounde rvoltage. The bat‐
te ry may not be charging.
Handling and ride comfort may suf fer. #
Start the engine. #
Consult a qualified specialist workshop as soon as possible. Re
fueling Re
fueling theve hicle &
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. #
Fire, open flames, smoking and creation
of spar ksmust be avoided. #
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fueling theve hicle. &
WARNING Risk of inju ryfrom fuels
Fu els are poisonous and hazardous to your
health. #
Do not swallow fuel or let it come into
con tact wi thskin, eyes or clo thing. #
Do not inhale fuel vapor. #
Keep children away from fuel. #
Keep doors and windo wsclosed du ring
th ere fueling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediately rinse fuel off your skin with
soap and water. #
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. #
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. #
Change immediately out of clo thing that
has come into con tact wi thfuel. &
WARNING Risk offire or explosion from
electros tatic charge
Electros tatic charge can crea tespar ksand
th ereby ignite fuel vapors. #
Before opening the fuel filler cap or tak‐
ing hold of the pump nozzle, touch the
me tallic body of theve hicle.
This dischar ges any electros tatic charge
th at may ha vebuilt up. #
Do not get into theve hicle again during
th ere fueling process.
Otherwise, electros tatic charge could
build up again. &
WARNING Risk offire from fuel mixture
Ve hicles with a diesel engine:
If yo u mix diesel fuel with gasoline, theflash
point of the fuel mixture is lo werth an that of
pure diesel fuel.
While the engine is running, component pa rts
in theex haust sy stem may overheat without
wa rning. #
Neverre fuel using gasoline. #
Never mix gasoline with diesel fuel. Driving and parking
12 5

Obser
vethefo llowing points toensure that the
ve hicle is properly secured against rolling away
unin tentionally: #
Always apply the parking brake. #
Vehicles with automatic transmission:
engage transmission position 005D.#
On uphill or downhill inclines: turnthe
front wheels towa rdsth e curb. #
On uphill or downhill inclines: securethe
re ar axle with a chock or an object without
sharp edges.
% Yo
u can operate the side windo wsforfive
minutes af teryo u ha veswitched off theve hi‐
cle. Manual parking brake
Applying/releasing
the handbrake le ver &
WARNING Risk of skidding or an acci‐
dent bybraking with the parking brake
If yo u ha vetobrake your vehicle with the
parking brake, the braking dis tance is consid‐
erab lylonger and the wheels may loc k.There
is an increased risk of skidding and/or acci‐
dent. #
Only brake theve hicle with the parking
brake if the service brake has failed. #
Inthis case, do not apply the parking
brake with too much forc e. #
Ifth e wheels loc k,immediately release
th e parking brake as much as required
fo rth e wheels toturn again. &
WARNING Risk offire and an accident if
th e parking brake is not released
If th e parking brake is not fully released when
driving, thefo llowing situations can occur:
R The parking brake can overheat and cause
a fire
R The parking brake can lose its holding
function #
Comple tely release the parking brake
before driving off. The brake lights do not light up when
you brake
th eve hicle with the parking brake.
Generally, you may only apply the parking brake
when theve hicle is stationar y. #
Toapply the pa rking brake: pull handbrake
le ve r1 up as far as the last possible de tent.
When the engine is running, the0049
and 0024 (USA) or 0024(Canada) indicator
lamps in the Instrument Display light up. If
th eve hicle is in motion, a warning tone
sounds.
% In
vehicles with a folding handbrake le ver,
yo u can then press handbrake le ver1 down
as far as it will go. #
Torelease the pa rking brake: onvehicles
with a folding handbrake le ver,firs t pull hand‐
brake le ver1 up as far as it will go. #
Pull handbrake le ver1 slightly and press
re lease knob 2. #
Guide handbrake le ver1 down toas far as it
will go.
The 0049 and0024 (USA) or 0024(Canada)
indica tor lamps in the Instrument Display go
out.
Fo lding the handbrake le ver up or down (only
in vehicles with a folding handbrake le ver)
Re quirements:
R The handbrake le ver is applied. #
Tofold down the handbrake le ver:push the
handbrake le ver down as far as it will go. #
Toraise the handbrake le ver:pull the hand‐
brake le ver up as far as it will go. Driving and parking
13 3

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 ontowing a trailer &
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
157