If it is no
tpossible toengag eall-wheel driv ewhen
th ev ehicle is rolling: #
Vehicles with automatic transmission:
brief lymo vethes elector le verto005C . Engaging/disen
gaging all-wheel drive *
NO
TERisk of damag etothe transfer
case If
yo us tepont he accelerator pedal while the
all-wheel driv eisengaged or disen gage d, the
trans ferc ase ma ybedamaged. #
Do no tstepont he accelera torp edal
when thei ndicator lam pinthe switch
fo rt he all-wheel driv eisflashing. #
Toengage/disen gage: press theu pper sec‐
tion of switch 1.
The indicator lam pinswitch 1flashes while
th ea ll-wheel driv eisengaged or disengaged.
The 00E5 and003D warning lamps light up in
th ei nstrument displa y.ESP ®
and ASR are
deacti vatedf or thed uration of thes hifto per‐
ation. If thes hifto peration is successful, the
00E5 and003D warning lamps in thei nstru‐
ment displa ygoout and ESP ®
and ASR are
re activated.
As lon gasthe indicator lam pinswitch 1is
fl ashing, youc an cancel thes hifto peration by
pressing switch 1again. If thes hifto peration
fa ils, thei ndicator lam pinswitch 1brief ly
fl ashes thre et imes. One of thes hiftconditions
wa sn otmet.
If th ei ndicator lam pinswitch 1lights up, all-
wheel driv eisengaged. Arele vant messa ge
appear sinthe displa yofthe on-boar dcomputer. %
If
th eL OW RANGE gear reduction is engaged,
th ea ll-wheel driv ecann otbe disengaged. Fu
nction of theL OW RANGE gear reduction The
LOWR ANGE gear reduction enables very
slo wd riving in ther espectiv egears. If youe ngage
LO WR ANGE, thee ngine' sperform anc echarac‐
te rist ics and thea utomatic transmission's shift‐
ing characteristic sareadjus teda ccording ly.T he
transmission ratio from thee ngine tothew heels
is around 40% lo werthan in ther oad posi tion.
The driv etorque is increased cor respondingly.
Conditions fore ngaging/disengaging
Th ef ollowing shifting condition smustbem etin
order toengag eordisengag eLOW RANGE:
R All-wheel driv eisengaged (/ page119).
R Thee ngin eisr unning.
R Thev ehicle is stationar y.
R Youd epress theb rake pedal.
R Vehicles with automatic transmission: the
selector le verisinp osition005Dor005C. Engaging and disen
gaging LOW range 1
Enga ging and disengaging LOWr ange
% On
vehicles wit hDSR (Downhill Speed Regu‐
lation), switch 1isreplaced wit hthe switch
fo rD SR. Driving and parking
11 9
Ra
ising and lo weringthev ehicle le vel Using
ther emo tecontrol
The remo tecontrol is loca tedinah older on the
B‑pilla ronthe driver's side. Remo vether emo te
control from theh older befor euse. Elect
ronic le velc ontrol per form sas elf-chec kreg‐
ularly when it is activated and while in use. Indi‐
cator lamp 1onther emo tecontrol lights up for
appr oximately one second when yous wit ch on
either thei gnition or electronic le velc ontrol with
button 4.
Ther eisam alfunction if indicator lamp 1
beha vesint hefollowing ways:
R thei ndicator lam pdoes no tlight up when you
switc hont he ignition or electronic le velc on‐
trol
or
R thei ndicator lam pdoes no tgoout aftero ne
second
or
R thei ndicator lam pthen lights up again or
fl ashes
In addition ,awarning tone is emitted from the
re mo tecontrol fora pproxima tely 30 seconds.
The fault that has been de tected can be shown
using thei ndicator lamps (signaling of fault
codes). #
Park thev ehicle, leaving thei gnition switched
on. #
Toraise or lo werthe vehicl elevel: press
and hold button 2or3 until thev ehicle
le ve lreaches ther equired height.
The indicator lam ponbutton2or3
fl ashes as lon gasthevehicle le velisb eing
ch anged. When thev ehicle le velh as been set,
th ei ndicator lam ponbutton2or3 lights
up. #
Tolowe rautomatical ly:brie flyp ress but ton
3 .
Electroni cleve lcontrol automaticall ylow ers
th ev ehicle down tothel owest position.
The indicator lam ponbutton3flashes as
lon gast hevehicle le velisb eing changed.
When thev ehicle le velh as been set, thei ndi‐
cator lam ponbutton3lights up. #
Tostop them ovement, brief lypress button
2. #
Toraise or lo wertod riving le vel:brief ly
press button 2or3.
Elect ronic le velc ontrol automaticall yraises or
lo we rsthev ehicle todriving le vel.
The indicator lam ponbutton2or3
fl ashes as lon gasthevehicle le velisb eing
ch anged. When thev ehicle le velh as been set,
th ei ndicator lam ponbutton2or3 lights
up. #
Tostop them ovement, brief lypress theo ther
button. #
Tosave thes etvehicl eleve l:se tthe
re qu ired vehicle le vel. #
Press and hold button 5or6 until youh ear
at one.
The vehicle le vels et has been sa vedonc orre‐
sponding button 5or6. #
Tocall up thes ave dvehicle le vel:briefly
press button 5or6.
Electronic le velc ontrol automaticall yraises or
lo we rsthev ehicle tothes ave ddriving le vel.
The indicator lam ponbutton5or6
fl ashes as lon gasthevehicle le velisb eing
ch anged. When thev ehicle le velh as been set,
th ei ndicator lam ponbutton5or6 lights
up. #
Tostop them ovement, brief lypress button
2 or3. #
Toswitc hona utomaticall y:driv eato ver
6.2 mph(10 km/h) or release thep arking
brake.
Elect ronic le velc ontrol controls thev ehicle
le ve la utomaticall y. #
Tostop them ovement, brief lypress button
2 or3.
Switching electronic le velc ontrol off/on #
Toswitc helectronic le velc ontrol off:
press button 4.
The indicator lam ponbutton4lights up. Driving and parking
12 3
Obser
vethef ollowing points toensur ethat the
ve hicle is properly secured agains trolling away
unin tentionally: #
Alwaysa pply thep arking brake. #
Vehicles with automatic transmission:
engag etransmission position 005D.#
On uphill or downhill inclines: turnthe
front wheels towa rdst he curb. #
On uphill or downhill inclines: securethe
re ar axle wit hachockorano bject without
shar pedges.
% Yo
uc an operat ethe side windo wsforf ive
minutes af tery ou ha veswitched of fthe vehi‐
cle. Manual parking brake
Applying/releasing
theh andbrak elever &
WARNING Risk of skidding or an acci‐
dent bybraking wit hthe parking brake
If yo uh ave tobrak eyour vehicle wit hthe
parking brake, theb raking dis tance is consid‐
erab lylonger and thew heels ma yloc k. There
is an increased risk of skidding and/or acci‐
dent. #
Only brak ethe vehicle wit hthe parking
brak eift he service brak ehasfailed. #
Inthis case, do no tappl ythe parking
brak ewitht oo muc hforce. #
Ifth ew heels loc k,immediately release
th ep arking brak easmuchasr equired
fo rt he wheels totur na gain. &
WARNING Risk offire and an acciden tif
th ep arking brak eisnotreleased
If th ep arking brak eisnotfull yreleased when
driving, thef ollowing situations can occur:
R The parking brak ecan overheat and cause
af ire
R The parking brak ecan lose its holding
function #
Comple tely release thep arking brake
befor edriving off. The brak
elights do no tlight up when youb rake
th ev ehicle wit hthe parking brake.
Generally ,you ma yonlya ppl ythe parking brake
when thev ehicle is stationar y. #
Toappl ythe parking brake: pullhandbrake
le ver 1up as farast he las tpossible de tent.
Whe nthe engine is running ,the 0049
and 0024 (USA) or 0024(Canada) indicator
lamps in theI nstrument Displa ylight up. If
th ev ehicle is in motion, awarning tone
sounds.
% In
vehicles wit hafolding handbrak eleve r,
yo uc an then press handbrak elever 1 down
as farasitw illg o. #
Torelease thep arking brake: onvehicles
wit haf olding handbrak eleve r,firs tp ullh an d‐
brak elever 1 up as farasitw illg o. #
Pullh andbrak elever 1 slightly and press
re lease knob 2. #
Guide handbrak elever 1 down toas farasit
willg o.
The 0049 and0024 (USA) or 0024(Canada)
indica torlamps in theI nstrument Displa ygo
out.
Fo lding theh andbrak elever up or down (only
in vehicles with afolding handbrak elever)
Re quirements:
R The handbrak eleve risa pplied. #
Tofold down theh andbrak elever: push the
handbrak elever down as farasitw illg o. #
Toraise theh andbrak eleve r:pull theh and‐
brak elever up as farasitw illg o. Driving and parking
13 3
Pe
rforming emer gency braking with theh and‐
brak elever If, in
exceptional cases, thes ervice brak efails,
yo um ayuse thep arking brak etoperform emer‐
ge ncy braking. #
Eme rgency braking: press and hold release
button 2and carefull ypull brak elever 1. Electric parking brake
Note
sont he electric parking brake &
WARNING Risk of accident and inju ry
due tochildren and animals lef tunat ten‐
de dint hevehicle
If yo ul eave children and animals unat tended
in thev ehicle, they ma ybea bletos etthe
ve hicle in motion, fore xamp leby:
R Releasing thep arking brake.
R Shifting thea utomatic transmission out of
par kposition 005D.
R Startin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment and become trapped. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th eS martK eywit hyou and loc kthe
ve hicle. Fo
rthe automatic functions towo rkcor rectl y,the
driver mus tbeseated in thec orrect sea tposition
(/ page 59).
The function of thee lectric parking brak eis
dependent on theo n-boar delectrical sy stem volt‐ age. If
theo n-boar delectrical sy stem voltag eis
lo wort hereisam alfunction in thes ystem, it
ma ynotbe possible toappl ythe electric parking
brak eand they ellow 0024 indicator lam plights
up.
In this case, par kthe vehicle in thef ollowing way:
R Park thev ehicle on le velg roun da nd secur eit
to prev ent it from rolling away.
R Ve
hicles with automatic transmission:
shif tthe transmission toposition 005D.
% The electric parking brak
eisonlya ctually
applied when ther ed 0049 and0024 (USA)
or 0024 (Canada) indicator lamps light up
continuousl y.
It ma ynotbe possible torelease aparkin gbrake
if th eo n-boar delectrical sy stem voltag eisl owor
if th er eisam alfunction in thes ystem. Infor ma
qu alified specialis tworks hop. When thee ngine is
switched off, thee lectric parking brak ecarries
out afunction test at regular inter vals. Noise sare
normal in this process.
Au tomaticall yapplying the electric parking
brake
Ve hicles with automatic transmission:
The electric parking brak eisautomatically
applied when thet ransmission is in position 005D.
In addition, at leas tone of thef ollowing condi‐
tions mus tbefulfilled:
R thee ngine is switched off
R thed rive risn otsitting in thed rive r's seat
R theb elt buckle is undone To
prev ent thee lectric parking brak efroma pply‐
ing automaticall y,pull switch 1. 134
Driving and pa rking
The electric parking brak
eisalso automatically
applied if ActiveD ista nce Assi stDISTRONI Chas
brought thev ehicle toas tandstill.
In addition ,atleastone of thef ollowing condi‐
tions mus tbefulfilled:
R thee ngine is switched off
R thed rive risn otsitting in thed rive r's seat
R theb elt buckle is undone
R ther eisas ystemm alfunction
R thep owe rsupply is insuf ficient
R thev ehicle is stationar yfor along time
The red0049 and0024 (USA) or 0024(Canada)
indicator lam pinthe instrument displa ylights up.
The electric parking brak eisonlya ctuall yapplied
when ther ed 0049 and0024 (USA) or 0024
(Canada) indicator lamps light up continuousl y.
Re leasing thee lectric pa rking brak eautomat‐
ically
Ve hicles with automatic transmission:
The electric parking brak eofyourvehicle is
re leased when all of thef ollowing condition sare
fulfilled:
R The driver is sitting in thed rive r's seat.
R The driver is belted.
R The engine is running.
R The transmissio nisinposition005Bor005E and
yo ud epress thea ccelera tor
or
Yo us wit ch from transmission position 005Dto
position 005Bor005E.Y ou mus talso depress the
accelerator if tra veling on steep uphill gradi‐
ents.
R Ifth et ransmission is in position 005E,therear-
end door smustbec losed.
App lying/releasing thee lectric pa rking brake
manually &
WARNING Risk of accident and inju ry
due tochildren and animals lef tunat ten‐
de dint hevehicle
If yo ul eave children and animals unat tended
in thev ehicle, they ma ybea bletos etthe
ve hicle in motion, fore xamp leby:
R Releasing thep arking brake.
R Shifting thea utomatic transmission out of
par kposition 005D. R
Startin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment and become trapped. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th eS martK eywit hyou and loc kthe
ve hicle. #
Toappl y:press switch 1.
When thee lectric parking brak eisapplied,
th er ed 0049 and0024 (USA) or 0024(Can‐
ada) indicator lamps light up in thei nstru‐
ment displa y.The electric parking brak eis
onl yactuall yapplied when ther ed 0049
and 0024 (USA) or 0024(Canada) indicator
lamps light up continuousl y.
It is also possible toappl ythe electric parking
brak ewhen thei gnition is switched off. #
Torelease: pull switch 1.
The red0049 and0024 (USA) or 0024(Can‐
ada) indicator lamps in thei nstrument display
go out.
Yo um ayonlyrelease thee lectric parking
brak eift he ignition is switched on wit hthe
st art/ stop button. Driving and parking
13 5
st
yletos uitthep reva iling road and weather con‐
ditions.
If yo ua ctivat eord eactivat ethe all-wheel driv ein
av ehicle wit hthis option, ASR will be deactivated
fo rt he duration of thea ctivation/deactivation
process.
Ve hicles without steering wheel but tons: if
ASR is malfunctioning, the00E5 indicator lamp
lights up while thee ngine is running and the
engine output ma ybereduced (/ page23).
ASR impr ovestraction, i.e. thet ransfer of po wer
from thet ires tother oad sur face, foras ustained
period and, thereb y,also impr ovesthe driving
st abilit yoft hevehicle. If thed riving wheels start
to spin, ASR brakes individuald rive wheels and
limits thee ngine torque. ASRthus significantly
assists youw hen pullin gawaya nd accelerating,
especiall yonw etor slippe ryroads.
If traction on ther oad sur face is no tsufficient,
eve nASR will no tallow youtop ullaway without
dif ficulty .The typ eoftires and totalwe ight of the
ve hicle as well as theg radient of ther oad also
pla yac rucial role.
If AS Rinter venes, the00E5 warning lam pinthe
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 ®
canno tcarry
out vehicle stabilization. In addition ,other
driving saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have ESP ®
ch eckedataq ualified spe‐
cialis tworks hop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo ud eactivat eESP®
,E SP ®
canno tcarry out
ve hicle stabilization. #
ESP ®
shoul donlybed eactivated in the
fo llowing situations. Do no
topera tethev ehicle on aroller dynamo me‐
te r( e.g. forap erform anc etest). If youh ave to
operat ethe vehicle on aroller dynamo meter,con‐
sult aqualified specialis tworks hop beforehand. If
yo ua ctivat eord eactivat ethe all-wheel driv ein
av ehicle wit hthis option, ESP ®
will be deactiva‐
te df or thed uration of thea ctivation/deactiva‐
tion process.
If ESP ®
is malfunctioning or deactivated, the
00E5 warning lam plight supw hilethee ngine is
ru nning and thee ngine output ma ybereduced
(/ page23).
% Onl
yuse wheels wit hthe recommended tire
sizes. Only then will ESP ®
function properly. Ac
tivating/deactivatin gESP®
(Electronic Sta‐
bility Prog ram) On-boa
rdcompu ter:
4 Settings 5
DriveAssist 5
ESP (ESP) #
Select Ein(On) or Aus00BB (Off). Fu
nctions of ESP ®
Crosswind Assist Crosswind Assis
tdoes no tworkifE SP®
is deacti‐
va tedord isabled due toam alfunction.
Crosswind Assis tdoes no treact under thef ollow‐
ing conditions:
R The vehicle is subjected tosevere jolts and
vib rations, e.g .asar esult of une vens urfaces
or po tholes.
R The vehicle loses traction, e.g. on sno worice
or when hydroplaning.
R The driver is per form ing sudden and lar ge
st eering mo vements.
Crosswind Assis tisoperational again as soon as
th ed riving conditions retur nton ormal.
Crosswind Assi stdetects stro ng crosswind gu sts
th at can impair abilit yofyourvehicle todrive
st ra ight ahead. Crosswin dAssis tinter venes
depending on thed irection and stre ngt hoft he
crosswind.
As tabilizing brak eapplicatio nhelps youtok eep
th ev ehicle on trac k.
Information is shown in thei nstrument clus terin
th ee vent of aclearly discernible inter vention by
Crosswind Assist.
Crosswind Assis tisactiveabove avehicle speed
of 50 mph(80 km/h )whent he vehicle is driving
st ra ight ahead or cornering gently. 13 8
Driving and pa rking
Yo
uc an ha vethef ollowing status information for
AT TENTION ASSIS Tdispla yedint he Assis tance
menu of theo n-boar dcomputer:
R The journe ylengt hsince thel astb reak
R The attention le veld etermined byATTENTION
ASSIS T:
- The fuller theb ar is, theh igher thed etec‐
te da ttention le velis
- The bar em pties as attentivenes sdecrea‐
ses
If AT TENTION ASSIS Tcann otcalculat ethe atten‐
tion le vela nd canno tissue awarning ,the Atten-
tion Level messageappears.
If AT TENTION ASSIS Tisdeactivated, the00D7
symbol appear sinthe assis tance graphi cinthe
instrument display whenthee ngine is running.
AT TENTION ASSIS Tisactivated automatically
when thee ngine is re-sta rted. The las tselected
sensitivity le velremain sstore d.
Sy stem limitations
AT TENTION ASSIS Tisactiveint he37 mph
(60 km/h) to124m ph (200 km/h )spee drange.
Th ef unctionality of ATTENTION ASSIS Tisrestric‐
te d, and warnings ma ybedelayedorn otoccur at
all, in thef ollowing situations:
R The journe ylasts less than appr oximately
30 minutes
R The road condition is poor (une venr oad sur‐
fa ce or po tholes)
R The vehicle is subjected toas tron gc rosswind
R Youh ave asporty drivin gstyle (hig hcorner‐
ing speeds or high ratesofa cceleration)
R The time is se tincor rectly
R Youc hang elane sand vary your spee dfre‐
qu ently in activ edriving situations
The ATTENTION ASSIS Tdrow sines sora lertness
assessment is dele teda nd restar tedw hen con‐
tinuin gthe journe yinthefollowing situations:
R Ifyo us wit ch offt he engine
R Ifyo uu nfas teny our seat belt and open the
driver's door (e.g. chang edrive rs or take a
break) Setting
ATTENTION ASSI ST
On-boar dcomputer:
4 Settings 5
DriveAssist
5 Attention Assist (Attention Assist)
Setting options
The following settings ar eavailable:
R Standard
R Sensitive
R Off #
Select asetting. Blin
dSpotA ssist Fu
nction of Blind Spo tAssis twith exitwa rn‐
ing
Blind Spo tAssis tuses tw olateral, rear-facing
ra dar sensor stomonitor thea read irectl ynextto
and on thes ide behind thev ehicle.
% US
Ao nly:
This device has been appr ovedbyt he FCC as
a" Vehicular Radar Sy stem". The radar sensor
is intended foru se in an automotiv eradar
sy stem onl y.Re mo val,ta mp ering, or altering
of thed evice will void an ywarranties, and is
no tp ermit tedbyt he FCC. Do no ttamper
with, alter or use in an ynon-appr ovedw ay.
An yu nauthorize dmodificatio ntothis device
could void theu ser ’sauthority tooperat ethe
equipment. &
WARNING Risk of accident despit eBlind
Spo tAssist
Blind Spo tAssis treacts neither tostationary
object snortovehicles approaching and over‐
ta king youatag reatly di fferent speed.
As aresult, Blind Spo tAssis tcanno twarn
driver sinthese situations. #
Alwaysp aycareful attention tothet raf‐
fi cs ituation and maintai nasafed is‐
ta nce at thes ide of thev ehicle. Blind Spo
tAssis tiso nlyana id. It ma yfail to
de tect some vehicles and is no substitut efor
attentiv edriving. Alw ayse nsur ethat ther eiss uf‐
fi cient dis tance tothes ide foro ther road users
and obs tacles.
If av ehicle is de tected ab oves peeds of appr ox‐
imatel y7.5mp h(12 km/h) and this vehicle sub‐
sequentl yenter sthe monitoring rang ed irec tly
next toyour vehicle, thew arning lam pinthe out‐
side mir rorlights up red. Driving and parking
147
Ve
hicles with Blind Spo tAssis t:driver scan
also be warned of an ycrossing traf ficw henb ack‐
in gupo ut ofaparkin gspace. If avehicle is
de tected, thew arning lam pinthe outside mir ror
on ther ele vant sid elights up red. If it de tects a
critica lsituation, awarning tone also sounds.
Ve hicles with Blind Spo tAssis tand Parking
Assis tPARKTRONIC: driverscan also be warned
of an ycrossing traf ficw henb ackin gupo ut of a
parkin gspace. If acritical situation is de tected, a
wa rning symbol appear sonthe camera imag eof
th em ultimedia sy stem. If thed rive rd oes not
re spond tothew arning ,the vehicle's brakes can
be applieda utomatically.In this case, awarning
to ne sounds.
The Rear Cross Traf ficA lertfunction is acti ve
unde rthe following conditions:
R BlindSpotA ssis tisa ctivated.
R Reverseg ear is engaged or thev ehicle is
backing up at walkin gpace.
R Ifth em aneuvering assis tance function is acti‐
va tedint he multimedia sy stem.
The Rear Cross Traf ficA lertfunction is una vaila‐
ble when driving wit hatrailer. Lane
Keeping Assis tand Activ eL aneK eeping
Assist Fu
nctions of Lane Keeping Assist Lane
Keeping Assis tmonitor sthe area in front of
yo ur vehicle wit hmultifunction camera 1.It
ser vestop rotect youa gains tunin tentionally le av‐
ing your lane .You ma yalso be warned by a
vibrating messa gefrom thes teering wheel and by
th es tatus symbo lflashing in thei nstrument dis‐
pla y. The
warning is issued when thef ollowing condi‐
tions ar emetat thes ame time:
R Lane Keeping Assis tdetects lane markings.
R Afront wheel passe soverthe lane markings.
Yo uc an activat eand deactivat ethe Lane Keeping
Assis twarning.
If yo uf ail toadap tyour driving style, Lane Keep‐
ing Assis tcan neither reduce ther isk of accident
nor override thel aw sofp hysics. It canno ttake
int oa ccount road, weather or traf ficc onditions.
Lane Keeping Assis tisonlyana id and is not
intended tokeep thev ehicle in thel ane without
th ed rive r's cooperation. Youa re re sponsible for
th ed ista nce tothev ehicle in front, forv ehicle
speed, braking in good time and fors taying in
yo ur lane.
Sy stem limitations
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
R Ther eisp oor visibilit y,e.g. due toinsuf ficient
illumination of ther oad, high lyvariable shade
conditions, or due torain, sno w,fogorh eavy
spr ay.
R Glar efromo ncomin gtraf fic, direct sunligh tor
re flections.
R Ther eisd irtont he windshield in thev icinity
of them ultifunction camer aorthe camera is
fo gged up, damaged or obscured.
R No or se veral, unclear lane markings ar epres‐
ent foro ne lane, e.g. in aconstruction area.
R The lane markings ar eworn, dar korcovered.
R The dis tance tothev ehicle in front is too
small, and therefor ethe lane markings cannot
be de tected.
R The lane markings chang equickl y,e.g. lanes
branc hoff,c ross one ano ther or mer ge.
R The road is very nar row and winding. Drivin
gand parking 14 9