In wintry driving conditions, alw
ays use winter
tires (M+S tires) and, if necessar y,snow chains
(/ page 309). On lyin 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 (/ page126).
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 tance 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.
If it is not possible toengage all-wheel drive when
th eve hicle is rolling: #
Vehicles with automatic transmission:
brief lymo vethe selector le verto 005C . Engaging/disen
gaging all-wheel drive *
NO
TERisk of damage tothe transfer
case If
yo ustep on the accelerator pedal while the
all-wheel drive is engaged or disen gage d, the
trans fer case may be dama ged. #
Do not step on the accelera tor pedal
when the indicator lamp in the switch
fo rth e all-wheel drive is flashing. Driving and parking
12 5
#
Toengage/disen gage:press the upper sec‐
tion of switch 1.
The indicator lamp in switch 1flashes while
th e all-wheel drive is engaged or disengaged.
The 00E5 and003D warning lamps light up in
th e instrument displa y.ESP ®
and ASR are
deacti vatedfo rth e duration of the shift oper‐
ation. If the shift operation is successful, the
00E5 and003D warning lamps in the instru‐
ment display go out and ESP ®
and ASR are
re activated.
As long as the indicator lamp in switch 1is
fl ashing, you can cancel the shift operation by
pressing switch 1again. If the shift operation
fa ils, the indicator lamp in switch 1brief ly
fl ashes thre e times. One of the shift conditions
wa s not met.
If th e indicator lamp in switch 1lights up, all-
wheel drive is engaged. A releva nt messa ge
appears in the display of the on-board computer.
% If
th eLO W RANGE gear reduction is engaged,
th e all-wheel drive cann otbe disengaged. Fu
nction of theLO W RANGE gear reduction The
LOW RANGE gear reduction enables very
slow driving in there spective gears. If you engage
LO W RANGE, the engine's per form ance charac‐
te rist ics and the automatic transmission's shift‐
ing characteristics are adjus ted according ly. The
transmission ratio from the engine tothe wheels
is around 40% lo werth an in thero ad position.
The drive torque is in creased cor respondingly.
Conditions for en gaging/disengaging
The following shifting conditions must be met in
order toengage or disengage LOW RANGE:
R All-wheel drive is engaged (/ page125).
R The engi ne isrunning.
R The vehicle is stationar y.
R You depress the brake pedal.
R Vehicles with automatic transmission: the
selector le ver is in position 005Dor005C. Engaging and disen
gaging LOWrange 1
Enga ging and disengaging LOWrange
% On
vehicles with DSR (Downhill Speed Regu‐
lation), switch 1isreplaced with the switch
fo r DSR. #
Toengage and disen gage:press the upper
section of switch 1.
The 002E indicator lamp flashes in the instru‐
ment display forth e duration of the shift
operation.
R When the shift operation take s place and
LO W RANGE is engaged, the002E indica‐
to r lamp lights up.
R When the shift operation take s place and
LO W RANGE is disengaged, the002E indi‐
cator lamp goes out.
As long as the indicator lamp 002Eisflashing,
yo u can cancel the shift operation bypressing
button 1again. If the shift operation fails, the
indicator lamp 002Ebrieflyflashes thre e times.
One of the shift conditions was not met. DSR (Downhill Speed
Regulation) Note
s on DSR If
yo ufa ilto adapt your driving style or you are
inat tentive, DSR can nei ther reduce therisk of
accident nor override the la wsof ph ysics. DSR
cannot take road, weather and traf fic conditions
into account. DSR is only an aid. You are respon‐
sible for a safe dis tancetotheve hicle in front, for
ve hicle speed and for braking in good time.
DSR supports you when driving downhill. DSR
main tains a set speed foryo u on downhill gradi‐
ents byapplying the brakes as required. Main‐ 12 6
Driving and pa rking
ta
ining the speed is dependent on thero ad sur‐
fa ce conditions and the downhill gradient and
cann ottherefore be guaranteed in all situations.
Yo u can set the speed depending on thege ar
ra nge tobetween 2 mph (4 km/h) and 11mph
(18 km/h) using the brake and accelerator pedals
or therock er switch on thesteering wheel.
DSR automatically cont rols in thefo llowing situa‐
tions:
R Ifth eve hicle is stationar y,or its speed is less
th an 2 mph (4 km/h) , the speed is set to
2 mp h (4 km/h) or it is set tothe minimum
speed forth ere spective gear range.
R Ifyo u drive fasterthan 11mp h (18 km/h) off-
ro ad, DSR swit ches tostandby mode. DSR
re mains activated, but does not brake auto‐
matically.
R Ifyo u drive downhill slo werth an 11mph
(18 km/h), DSR sets the speed tothe pr evi‐
ously set speed.
R Ifyo u drive faster than 28 mph (45 km/h),
DSR switches off automaticall y.Ac
tivating/deactivating DSR Ac
tivating DSR Yo
u can activate DSR when theve hicle is station‐
ary or moving. #
Press the upper section of switch 1.#
Brake or accelerate theve hicle tothe desired
speed between 2 mph (4 km/h) and 11mph
(18 km/h). #
Release the brake or accelera tor pedal.
The cur rent speed is stored. When stationar y,
2 mp h (4 km/h) or the minimum possible
speed for each gear range is stored. DSR maintains
thestored speed on the downhill
gradient and brakes automaticall y.
When DSR is activated and theve hicle pulls
aw ay, accelerates or brakes on an incline, the
speed set cor responds tothe speed at which the
accelerator or brake pedal is released or the
rock er switch is pressed during DSR regulation.
This is only the case if you are not driving faster
th an 11mp h (18 km/h).
DSR status display in the on-board computer
R DSR is activated:
- DSR andthe set speed appear in thest a‐
tus area of the on-board computer.
R DSR is activated, but is not inter
vening:
- You are driving between 11mph
(18 km/h) and 28 mph (45 km/h).
- DSR andthe speed 11mp h (18 km/h)
appear in thest atus area of the on-board
computer.
DSR is in standby mode.
R DSR is inactive:
- You are exceeding a speed of 28 mph
(45 km/h).
- DSR appears in thest atus area of the on-
board computer. In addition, theDSR Off
message appears.
- DSR - - - appears in thest atus area of the
on-board computer.
Setting the speed while driving downhill
Yo u can set the speed tobetween 2 mph
(4 km/h) and, depending on thege ar range, up to
11 mp h (18 km/h) using the brake and accelera‐
to r pedals or thero ck er switch on thesteering
wheel. Driving and parking
127
#
Brake or accelerate theve hicle tothe desired
speed on the downhill gradient. #
Release the brake or accelera tor pedal.
The cur rent speed is stored.
or #
Press rocker switch 1up or down during a
DSR regulation.
The last sa ved speed is increased or reduced. #
Release rocker switch 1.
The cur rent speed is stored.
or #
Press rocker switch 1up or down until
desired speed is reached. #
Release rocker switch 1.
The cur rent speed is stored.
% It may be a moment before
theve hicle starts
to brake tothe set speed. Take this delay into
account when setting the speed with rock er
switch 1.
Deactivating DSR #
Press the upper section of switch 1.
or #
Accele rate and drive fasterthan 28 mph
(45 km/h).
DSR deactivates automatically in thefo llowing
situations:
R You drive fasterthan 28 mph (4 5 km/h).
R There is a malfunction in the ESP ®
or ABS
sy stem. Electronic le
vel control Fu
nction of ENR (electronic le vel control) &
WARNING Risk of entrapment from vehi‐
cle lo wering
When lo wering theve hicle, people could
become trapped if their limbs are between
th eve hicle body and the tires or underneath
th eve hicle. #
Make sure no one is underneath the
ve hicle or in the immediate vicinity of
th e wheel ar ches when theve hicle is
being lo wered. &
WARNING Risk of inju ryfrom jack tip‐
ping
If yo u park a vehicle with air suspension, the
air suspension may remain activated for up to
one hour, even when the ignition is switched
off. If youth en raise theve hicle with the jac k,
th e air suspension will attem pttoadjust the
ve hicle le vel.
The jack may tip. #
Press the Service button on the air sus‐
pension remo tecontrol before raising
th eve hicle.
This pr events au tomatic readjustment
of theve hicle le vel and pr events it from
being raised or lo wered manually. &
WARNING Risk of accident due tolow‐
ered or raised chassis
Driving with a lo wered or raised chassis may
greatly impair braking and handling charac‐
te rist ics. You may also exceed the permissible
ve hicle height when thech assis is raised. #
Set the driving le vel before pulling away. &
WARNING Risk of accident from mal‐
function of electronic le vel control
If elect ronic le vel control is malfunctioning,
th eve hicle le vel may be asymmetrical, too
high or too lo w.
The driving and steering characteristics of the
ve hicle may be noticeably dif fere nt. #
Adapt your driving style according lyand
drive carefull y. 12 8
Driving and pa rking
#
Stop, paying attention toroad and traf‐
fi c conditions. #
Consult a qualified specialist workshop. *
NO
TERisk of damage tothech assis from
lo we redve hicle le vel If electronic le
vel control is malfunctioning or
re adjusts while you are driving, theve hicle
le ve l may be lo wered. #
Pay attention tothero ad conditions and
ensure there is suf ficient ground clear‐
ance. #
Drive carefully. The le
vel of theve hicle depends on vehicle load
and the load distribution. Elect ronic le vel control
adjusts the le vel of there ar axle automatically on
ve hicles with an air-sprung rear axle. The vehicle
le ve l is thereby alw ays maintained at the driving
le ve l,re ga rdless of vehicle load. Driving dynamics
re main unaf fected. The height dif fere nce
between the sides of theve hicle may be up to
0.4 in (1 cm).
Electronic le vel control is not engine-dependent
and is only operational when the ignition is
switched on. The electronic le vel control com‐
pressor works audibl y.
% If
th e compressor works cons tantly or starts
up se veral times per minute, elect ronic le vel
control is malfunctioning.
Depending on theve hicle equipment, electronic
le ve l control switches between manual and auto‐
matic mode depending on either theve hicle
speed or the position of the parking brake.
If electronic le vel control switches depending on
ve hicle speed, manual operation is automatically
activated when theve hicle is stationar y.Yo u may
ra ise or lo werth eve hicle le vel. If you subse‐
qu ently drive faster than 6 mph (10 km/h), man‐
ual mode is automatically deactivated and auto‐
matic mode sets theve hicle le vel.
If elect ronic le vel control switches depending on
th e parking brake position, manual mode is auto‐
matically activated when the parking brake is
applied. You may raise or lo werth eve hicle le vel
to load and unload. If youre lease the parking
brake, manual mode is automatically deactivated
and automatic mode sets the driving le vel.
When working on theve hicle or changing a
wheel, you can deactivate electronic le vel control
(/ page 129). If electronic le
vel control is malfunctioning or the
ve hicle le vel is too high or too lo w,an audible sig‐
nal sounds.
The driving and steering characteristics of the
ve hicle will be noticeably dif fere nt. Electronic
le ve l control adjusts theve hicle le velto the nor‐
mal le vel as soon as possible. Continue driving
carefully until the audible signal stops. Only then
is theve hicle at normal le vel.
Au tomatic mode and electronic le vel control
automatically switch on again torestore theve hi‐
cle le vel, depending on the option selected:
R when the parking brake is released
R from speeds of appr oximately 6 mph
(10 km/h)
If th e electronic le vel control compressor thre at‐
ens to ov erheat, e.g. due torepeated raising or
lo we ring wi thin a short period, elect ronic le vel
control is deactivated. You can raise or lo werthe
ve hicle le vel again af ter appro ximately
one minu te. Ra
ising and lo weringtheve hicle le vel Cer
tain special equipment enables other opera‐
tion options:
R Ambulance: raising theve hicle le vel abo ve
th e driving le vel (cen ter position) is not possi‐
ble. Only the lo west position and the driving
le ve l can be set.
R Speed signal: in order tooperate electronic
le ve l control, the parking brake must not be
applied. Elect ronic le vel control can be oper‐
ated manually up to6.2 mph (1 0 km/h). If
th is speed is exceeded, driving le vel will be
set automaticall y.
R Cas ter module, 30 min: electronic le vel con‐
trol can be opera ted up to30 min af ter
switching off the ignition.
Using there mo tecontrol
The remo tecontrol is loca ted in a holder on the
B‑pillar on the driver's side. Remo vethere mo te
control from the holder before use. Driving and parking
12 9
#
In particula r,do not park on dry grass‐
land or har vested grain fields. &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R Open doo rs,th ereby endangering other
persons or road users.
R Get out and be stru ck byoncoming traf‐
fi c.
R Ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion, forex ample by:
R Releasing the parking brake.
R Changing the transmission position.
R Starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of reach of
ch ildren. *
NO
TEDama getotheve hicle or the drive‐
train due torolling away #
Always park your vehicle safely and
according tolegal requirements. #
Always proper lysecure theve hicle
against rolling away. &
WARNING Risk of accident and inju ryif
parking brake is not applied
If yo u park theve hicle with the transmission
in park position 005Dand the parking brake is
not engaged, theve hicle may rollaw ay.
Engaging pa rkposition 005Dis not a fully ade‐
qu ate replacement forth e parking brake.
There is a risk of accident and injur y.#
Secu retheve hicle against rolling away
as desc ribed belo w. Obser
vethefo llowing points toensure that the
ve hicle is properly secured against rolling away
unin tentionally: #
alwa ys 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. Driving and parking
141
Depending on
theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind thera diator grill. Keep these parts
free of dirt, ice and slush (/ page 288). The sen‐
sors must not be co vered, forex ample bybicycle
ra ck s, overhanging loads or sticke rs. Af ter a colli‐
sion, ha vethe function of thera dar sensors
ch ecked at a qualified specialist workshop as
damage (bo thvisible or non-visible) may ha ve
occur redto the bumper or radiator trim. Fu
nction of driving sy stems and driving
saf ety sy stems In
this section, you will find information about the
fo llowing driving sy stems and driving saf ety sys‐
te ms:
R ABS ( Anti-lock braking system)
(/ page 146)
R ASR (acceleration skid control) (/ page 147)
R BAS (Brak eAssist System) (/ page146)
R ESP ®
(Electronic Stability Program)
(/ page 147)
R EBD ( Electronic Brakeforc eDistribution)
(/ page 148)
R Active Brake Assi st (/ page 149)
R Cruise co ntrol (/ page 151)
R Active Dis tance Assi stDISTRONIC
(/ page 152)
R Hill start assist (/ page155)
R HOLD fu nction (/ page 155)
R Parking Assist PARKTRONIC (/ page156)
R Rear view camera (/ page157)
R Surround view camera (/ page159)
R ATTENTION ASSIST (/ page162)
R Traf fic Sign Assi st (/ page 163)
R Blind Sp otAssi st (/ page 164)
R Active Lane Keeping Assist (/ page167) Fu
nctions of ABS (Anti-lock Braking Sy stem) Obser
vethe impor tant sa fety guidelines forthe
driving saf ety sy stem. ABS cont
rols the brake pressure in critical situa‐
tions:
R The wheels are pr evented from lo cking when
braking, e.g. during maximum full-s top brak‐
ing or when there is insuf ficient tire traction
R The steerability of theve hicle in term s of
ph ysical possibilities is ensured when braking
R ABS is active from speeds of appr ox. 3 mph
(5 km/h). On a slippery road sur face, ABS
inter venes even if you on lybrake gently.
Sy stem limits
If th ere is a malfunction and theye llow 0025 ABS
wa rning lamp lights up continuously in the instru‐
ment display af terst arting the engine, ABS may
be impaired or inoperative.
If ABS inter venes, you will feel a pulsing in the
brake pedal. The pulsating brake pedal may be an
indication of hazardous road conditions and func‐
tions as a reminder totake extra care while driv‐
ing.
If ABS in terv enes: keep the brake pedal firm ly
depressed until the braking situation has passed.
To car ryout maximum full-s top braking:
dep ress the brake pedal with full forc e. Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an emergency braking situation is
increased. #
Depress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo u with additional braking forc e in
an emer gency braking situation.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatically boosts the braking forc e of
th e brakes
R BAS can sho rten the braking dis tance
R ABS pr events the wheels from locking
When youre lease the brake pedal, the brakes
function as usual again. BAS is deactivated. 14 6
Driving and pa rking
Fu
nctions of ASR (Acceleration Skid Control) ASR can neither
reduce therisk of an accident
nor override the la wsof ph ysics if the driver does
not pay attention when pulling away or accelerat‐
ing. ASR is only an aid. Alw ays adapt your driving
st yle to suit the pr evailing road and weather con‐
ditions.
If yo u activate or deactivate the all-wheel drive in
a ve hicle with this option, ASR will be deactivated
fo rth e duration of the activation/deactivation
process.
Ve hicles without steering wheel but tons: if
ASR is malfunctioning, the00E5 indicator lamp
lights up while the engine is running and the
engine output may be reduced (/ page 26).
ASR impr oves traction, i.e. the transfer of po wer
from the tires tothero ad sur face, for a sus tained
period and thereb y,also impr ovesth e driving sta‐
bility of theve hicle. If the drive wheels start to
spin, ASR brakes individual drive wheels and lim‐
its the engine torque. ASRthus significantly
assists you when pulling away and accelerating,
especially on wet or slippe ryroads.
If traction on thero ad sur face is not suf ficient,
eve n ASR will not allow youto pull away without
dif ficulty. The type of tires and totalwe ight of the
ve hicle as well as the gradient of thero ad also
play a crucial role.
If ASR inter venes, the00E5 warning lamp in the
Instrument Display flashes. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilization. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilization. #
ESP ®
should only be deactivated in the
fo llowing situations. If
th e sur face requ ires, temp orarily deactivate
ESP ®
when pulling away ( / page 148).
Do not operate theve hicle on a roller dynamome‐
te r (e.g. for a per form ance test). If you ha veto
operate theve hicle on a roller dynamom eter, con‐
sult a qualified specialist workshop beforehand.
If yo u activate or deactivate the all-wheel drive in
a ve hicle with this option, ESP ®
will be deactiva‐
te dfo rth e duration of the activation/deactiva‐
tion process.
If ESP ®
is malfunctioning or deactivated, the
00E5 warning lamp lights up while the engine is
ru nning and the engine output may be reduced
(/ page 26).
% Only use wheels with
there commended tire
sizes. Only then will ESP ®
function properly.
ESP ®
can, within ph ysical limits, monitor and
impr ovedriving stability and traction in thefo l‐
lowing situations:
R When pulling away on wet or slippe ryroad
sur faces
R When braking
R Ifyo u are driving fasterthan 49.7 mph
(80 km/h) in stro ng crosswinds
If th eve hicle is deviating from the direction
desired bythe driver, ESP ®
can stabilize theve hi‐
cle byper form ing thefo llowing actions:
R One or more wheels are braked
R The drive sy stem per form ance is adap ted
depending on the situation
If ESP ®
is deactivated 00BB,the00E5 warning
lamp lights up con stantly in the Instrument Dis‐
play:
R Vehicle stabilization may be dela yed
R Crosswind Assist is still active
R The drive wheels may start tospin
R ASR traction control is no longer active
If ESP ®
is deactivated, ESP ®
will still support you
when braking.
If th e00E5 warning lamp in the Instrument Dis‐
play flashes, one or more wheels ha vereached
th eir tire traction limit:
R Adapt your driving style to suit the pr evailing
ro ad and weather conditions
R Do not deactivate ESP ®
under any circum‐
st ances Driving and parking
147