
J
Adoptsthestor ed/de tected spe ed
± Deacti vatesAc tiveDis tance Assist
DIS TRONI C
1 Increases /de crea ses thespeed
K Increases/ decreases thespecif ieddis‐
tan ce
H Activates /de activatesAc tiveDis tance
Assi stDIS TRONI C #
Tooper ateAc tiv eDi stance Assist
DI ST RO NIC :press there spectiv ebutt on
wit honly onefing er or sw ipe on thecon trol
panel.
Ac tiv atin g/deac tivatin gAc tiv eDi stance
Ass istDI ST RO NIC #
Press H.
Ac tiv atin gAc tiv eDi stance AssistDI ST RO NIC #
Toactiv atewi thout ast or ed speed :on
con trol panel 1press M ontheupper
sect ionorN onthelowe rsection or
J. Remo veyour foot from theacceler ator
pedal.
or #
Toactiv atewi th ast or ed speed :pr ess
J. Remo veyour foot from theacceler ator
pedal.
The current spe edisstor ed and maint ained
by theve hicle. Incr
easing orreduci ngthe speed #
Toinc rease thestor ed speed: swipeupwards
fr om thebo ttom ofcon trol panel 1.
R The stor ed speed isincr eased by1mp h
(1 km/ h). #
Todecr ease thestor ed speed: swipedown‐
wa rdsfrom theto pof con trol panel 1.
R The stor ed speed isdecr eased by1mp h
(1 km/ h).
or #
Brief lypress M ontheupper sectionor
N onthelowe rsection ofcontr olpanel
1.
The stor ed speed isincr eased orreduced by
5 mp h(1 0 km/h) .
or #
Accel erateth eve hicle tothedesir edspeed. #
Press M ontheupper sectionofcon trol
panel 1.
Ad opting thelimi tspeed showninthedr iver
disp lay #
ActivateAc tiveDis tance AssistDIS TRONI C. Dr
iving and parking 22
1

#
Press J.
The limit speed displayedin thedr iver displa y
is adop tedas thestor ed speed. Thevehicle
adap tsits speed tothat oftheve hicle in
fr ont, butonlyup tothestor ed speed.
Pulling away wit hAc tiv eDi stance Assist
DI ST RO NIC #
ActivateAc tiveDis tance AssistDIS TRONI C
and remo veyour foot from thebr ak epedal. #
Press J.
or #
Depr esstheacceler ator pedal brief lyand
fi rm ly.
The funct ionsofActiveDis tan ceAssi st
DIS TRONI Cconti nuetobe car ried out.
Re duci ngorinc reasin gth especif ieddis‐
tance from theve hicl ein front #
Press K.
The h display app ears.The speci fied dis‐
ta nce isreduced byone leve l.
If th elowe stleve lis alr eady selected, the
selection jumpstothehighes tle ve l. Deactiv
ating Activ eDi stance Assist
DI ST RO NIC &
WARNIN GRisk ofan acci dent dueto
Ac tiveDis tan ceAssi stDIS TRONI Cbe ing
acti vewhen youlea vethedr iver's seat
If yo ulea vethedr iver's seat while theve hicle
is being brak ed byActiveDis tance Assist
DIS TRONI Conly ,th eve hicle canrollaw ay. #
Alw aysdeactiv ateAc tiveDis tance
Assi stDIS TRONI Cand secureth eve hi‐
cle topreve ntitfrom rolling away
bef oreyo ulea vethedr iver's seat. #
Press ±.
% Ifyo ubr ak e, deac tivateES P®
or ifES P®
int erve nes, ActiveDis tance Assist
DIS TRONI Cis de acti vated.
Fu nction ofActiv eSpe edLimit Assist
If ach ang ein thespeed limitof12 mp h
(20 km/ h)or mor eis de tected and automatic
adop tionofspeed limitsisactiv ated, thene w
speed limitisaut omaticall yadop tedas the
st or ed speed (/page22 4). The
driven speed isadjus tedwhen theve hicle is
le ve lwit hth etraf fic sig nat thelat est.In the
case ofsig ns indi cati ngentr yint oan urb anarea ,
th espeed isadap tedaccor dingtothespeed
per mitt edwithin theurban area. The speed limit
displa yin thedr iver displa yis alw aysupda ted
when theve hicle isleve lwit hth etraf fic sig n.
If yo uar edr ivin gon Ger man highways and ther e
is no speed limit,thesy stem uses thespeed
st or ed fora st re tchof road withno spee dlimit
as these tspeed. Ifyo udo notalt er thestor ed
speed onast re tchof road withno spee dlimit ,
th ere comme ndedspeedof80 mph(1 30 km/h)
is adop ted.
If Ac tiveDis tance AssistDIS TRONI Cha sbe en
pu tint opa ssi ve mode bypressing theaccelera ‐
to rpeda l,onl yspee dlimi tswhi charehigh er
th an these tspeed areadop ted.
The maximum permissible speeddoesnotta ke
th ero ad con dition and current we ather and traf‐
fi c condi tions intoacco unt.Adjus tyo ur spee d
acc ordin gly, when necessar y. 222
Driving andparking

Obser
vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 210).
Sy stem limit s
The system limits ofTraf fic Sign Assistappl yto
th ede tection oftraf fic sig ns (/ page 236) .
Speed limitsbel ow 12mp h(20 km/h) areno t
aut omaticall yadop tedby thesy stem asthe
st or ed speed. Temp oraryspeed restrictions (e.g.
fo ra cer tain tim eor due towe ather condition s)
can notbe proper lyde tected bythesy stem. The
maximum permissible speedapplying toave hi‐
cle withatrailer isno tde tected bythesy stem.
Ad jus tth espeed inthese situation s. &
WARNIN GRisk ofacci dent dueto Active
Spe edLimi tAssi stadap tingth eve hicle's
speed
The speed adoptedby ActiveSpe edLimi t
Assi stma ybe toohigh orincor rect insome
indi vidualcase s,su ch as:
R atspee dlimit sbelo w12 mp h(20 km/h) R
inwe tcond itions orinfog
R when towing atrailer #
Ensur eth at thedr iven speed complies
wit htraf fic re gulations. #
Adjus tth edr iving speed tosuit current
tr af fic and weather condition s. Fu
nction ofrout e-base dspee dadap tation
When ActiveDis tance AssistDIS TRONI Cis acti ‐
va ted, theve hicle speed willbeadap tedaccor d‐
ing lyto thero uteev ent sahead. Dependingon
th edr ive pr og ram sele cted, theve hicle negoti‐
at es aro uteeve ntaheadin afue l-saving, com ‐
fo rtable ordynam icman ner.When thero ute
eve nthasbe en passe d,theve hicle acceler ates
ag ain tothestor ed speed. Thesetdis tance to
th eve hicle infront, vehicles detected aheadand
spe edrestrictions aheadar eta ke nint oacco unt.
Ro ute-based speedadap tatio ncan beacti vated
in themultimedia system (/ page22 4).
The follo wing routeeve nts areta ke nint o
acco unt:
R Curves R
Round about s
R T-int ersect ions
R Turnsand exits
R Traf fic jams ahead(only with Liv eTr af fic )
Also ,th espeed isreduced ifth etur nsignal indi‐
cat orisswitc hedonand one ofthefo llo wing sit‐
uation sis de tected:
R Turning offat intersect ions
R Drivin gon slowing- down lanes
R Drivin gon lanes adjacenttoslo wing-do wn
lanes
The driver isresponsible forch oosing theright
speed andobser vingother road user s.This
applies inpar ticular tointersect ions,ro und ‐
about sand traffic lights, asroute-based speed
adap tatio ndo es notbr ak eth eve hicle toast and‐
st ill.
If acor responding routeeve ntisde tected whi le
ro uteguidan ceisact ive, thefirs tsp ee dad jus t‐
ment iscar ried out automatic ally.If th etur nsig‐
nal indicat orisswitc hedon,theselect edrouteis Dr
ivin gand parking223

conf
irmed andfurther speed adjustmentis acti‐
va ted.
Speed adaptatio nis canc eled inthefo llo wing
cases :
R Ifth etur nsignal indicat orisswitc hedoff
bef oreth ero uteev ent and itis ther efor e
assumed that thero uteeve ntisno tre leva nt
to thedr iver .
R Ifth edr iver depr esses theacceler ator or
br ak epedal during thepr ocess.
Sy stem limit s
Ro ute-based speedadap tatio ndo es notta ke
ri ght ofwa yre gulations intoaccount .The driver
is responsible forcom plying withro ad traf fic
re gulations anddriving atasuit able speed.
In dif ficul tcondi tions,th espeed selectionmade
by thesy stem mayno talw aysbe suit able. This
appli estothefo llo wing situat ions,fo rex am ple:
R Uncle arroads
R Road nar rowing
R Varying maxim umpermissib lespeeds inindi‐
vidual lanes, forex am ple attollplazas
R Wetro ad sur faces, snowor ice In
these situation sth edr iver mus tint erve ne
acco rding ly. &
WARNIN GRisk ofacci dent inspi teof
ro ute-based speedadap tatio n
Ro ute-based speedadap tatio ncan malfunc‐
tio nor be temp orarily una vailable inthefo l‐
lo wing situat ions:
R Ifth edr iver does notfo llo wthecalcula‐
te dro ute
R Ifmap datais no tup-t o-dat eor available
R Intheeve ntofroadw orks
R Inbad weather orroad con dition s
R Ifth eaccelera torpeda lis depr essed
R Intheeve ntofelectr onicallydispla yed
speed limitations #
Adaptth espeed tothetraf fic situ ation. Se
tting Activ eDi stance AssistDI ST RO NIC
dr ivin gst yles
Re quirement s:
R ActiveDis tance AssistDIS TRONI Cis acti va‐
te d.
Multimedia system:
4 © 5
Set ting s5
Assist ance
5 Drivin g5
Act ive Dist ance Assist
Selecting adr iving style #
Select DYNAM ICSELECT based ,Dyna micor
Co mfort.
Se tting speedadap tation #
Select Whe ncorne ringetc.orFor limits .
Whe nth ese func tionsar eactiv e,theve hicle
speed isadjus tedaccor dingtoaro uteeve nt
ah eador tospeed limitsdetected byTraf fic
Sig nAssi st.
% When oneofthefo llo wing systems isactiv e,
th ede tected spe edcan bemanu ally ad op ted
as thespeed limit:
R ActiveDis tance AssistDIS TRONI C 22
4
Driving and parking

R
Variable limiter
Fu rther information aboutActiveDis tance
Assi stDIS TRONI C(/ page 220).
% Further information onspeed adaptatio n
(/ page 223) .
Fu nction ofActiv eSt op- and -Go Assis t
Ac tiveSt op-and-Go Assisthelps youwhen in
traf fic jams onmul ti-la neroads withseparat e
ro adw aysby aut omat icallypullin gaw ay wit hin up
to 60 seconds andwithmode rate steer ing
maneuv ers. Itor ients itself using theve hicle in
fr ont and lane markings. ActiveSt op-and-Go
Assis taut omaticall ymaint ainsasaf edis tance
fr om theve hicle infront and vehicles cuttingin.
Ac tiveSt op-and-Go Assistre qu ires you, as the
dr iver ,to keep your han dson thesteer ing wheel
at all times sothat youar eable tointerve ne at
an ytime tocor rect thecour seoftheve hicle and
ke ep itin lane.
Obser vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 210). Ac
tiveSt op-and-Go Assistactiv ates aut omati‐
call ywhen allofthefo llo wing condition sar e
me t:
R Youar ein atraf fic jam onafree wa yor high -
spe edmajorro ad.
R ActiveDis tance AssistDIS TRONI Cis acti va‐
te dand activ e(/ page220 ).
R ActiveSt eer ing Assis tis activ ated and activ e
(/ page22 7).
R Youar etrave ling nofaster than 35 mph
(60 km/ h).
When ActiveSt op-and-Go Assistis activ eth e
¬ status displa yappear sin thedr iver displa y.
Sy stem limit s
The system limit ations ofActiveDis tance Assist
DIS TRONI Cand ActiveSt eer ing Assis tapply to
Ac tiveSt op-and-Go Assist(/ page225). Ac
tiv eSte ering Assis t Fu
nction ofActiv eSte ering Assis t
Ac tiveSt eer ing Assis tis onl yav ailable uptoa
speed of130mp h(210 km/h) .The system helps yo
uto stay inthecent erofthelane bymeans of
moder atesteer ing interve ntio ns.Dep endingon
th espeed driven, ActiveSt eer ing Assis tuses the
ve hicles ahead andlane markings asare fer‐
ence.
% Dependi ngon thecount ry,in thelowe r
speed rang eAc tiveSt eer ing Assis tcan use
th esur round ingtraf fic as are fere nce. Ifnec‐
ess ary, Ac tiveSt eer ing Assis tcan then also
pr ov ide assis tance when drivi ng away from
th ecent erofthelane.
If th ede tection oflane mar kings andvehicles
ahead isim pair ed,ActiveSt eer ing Assis t
switc hestopassiv emode. Thesystem prov ides
no suppor tin this case.
Pe rm anen tst atus displa yon thedr iver dis‐
pla y
Ø Gray:acti vatedand passiv e
Ø Green: activated and activ e
Ø Red,fla shing: prom pttothedr iver to
act ivel ycon firm ortransition from activ e
to passiv est atus ,sy stem limit detected Dr
iving and parking 225

R
The lane markings arewo rnaw ay,dar kor
co veredup, e.g. bydirtor sno w.
R Ifth edis tance totheve hicle infront istoo
shor tand thus thelane marking scann otbe
de tected.
R The road isnar row and windin g.
R Ther ear eobs tacle son thelane orprojec ting
out intoth elane, suchas objec tmar kers.
The system does notpr ov ide assis tance inthe
fo llo wing condition s:
R Onvery tight cur vesand when turning.
R When crossing intersections.
R Atround about sor tollplazas.
R When activel ych ang inglane without switch‐
ing onthetur nsignal indicat or.
R When thetir epr essur eis toolow. &
WARNIN GRisk ofacci dent ifAc tive
St eer ing Assis tune xpect edlystops func‐
tionin g
If th esy stem limits ofActiveSt eer ing Assis t
ar ere ac hed ther eis no guar anteethat the
sy stem will remain activeor wil lke ep the
ve hicle inlane. #
Alw ayske ep your han dson thesteer ing
wheel andobser vethetra ffic car efull y. #
Alw aysst eer theve hicle paying atten‐
tion totraf fic condi tions. &
WARNIN GRisk ofacci dent ifAc tive
St eer ing Assis tune xpect edlyinterve nes
The detection oflane mar kings andobje cts
ma ymal functi onand causeune xpect ed
st eer ing interve ntio ns. #
Steer accor dingtotraf fic condi tions. Ac
tiv atin g/deac tivatin gAc tiv eSte ering
Assis t
Re quirement s:
R ESP®
is act ivat ed, but isno tint erve ning .
R ActiveDis tance AssistDIS TRONI Cis acti va‐
te d.
Multimedia system:
4 © 5
Set ting s5
Assist ance
5 Drivin g #
Select ØAct.St eering Asst.. Fu
nction ofActiv eEme rgency Stop Assis t Ac
tiveEmerg encyStop Assis tuses touc hsen ‐
sor sto monit orwhe ther thedr iver holds the
st eer ing wheel andinitiat esan emer gency stop if
necessar y.
If Ac tiveSt eer ing Assis tis deactiv ated, the
acc elerat orand brak epedal aremon itor ed as
we llas thesteer ing wheel. Awa rning isissued
when thesteer ing wheel isno tbeing heldor
when apedal isno tdepr essed, andtheve hicle
is in dang eroflea ving thelane. Dr
iving andparking 22
7

%
ActiveEmerg encyStop Assis tcan initiat ean
emer gency stop amaximum ofthre etimes
wit hin one ignition cycle. Afterth is Ac tive
St eer ing Assis tand ActiveEmerg encyStop
Assis tar edeactiv ated forth at ign ition cycle .
Sy stem limit s
If Ac tiveLa ne Keeping Assistdoes notde tect
la ne mar kings ,Ac tiveEmerg encyStop Assis tis
no tactiv e.
Fo rth ede tection ofvehicles andother obsta‐
cle s,obs erve thesy stem limits ofthefo llo wing
func tions:
R ActiveDis tance AssistDIS TRONI C
(/ page 218)
R ActiveSt eer ing Assis t(/ page225)
R ActiveLa ne Chang eAssi st(/ pag e229 ) Ac
tiv eLan eCha ngeAs sist Fu
nction ofActiv eLan eCha ngeAs sist
Ac tiveLa ne Chang eAssi stsuppor tsthedr iver
when chang inglane sand isact ivat ed byindic at‐
ing brief ly. Ac
tiveLa ne Chang eAssi stisonl yan aid and not
a subs titutefo ryo ur att entio n.Itis ess ential that
yo uobse rveth eno teson driving systems and
yo ur responsibili tyintheve hicle Operator's
Manual; youma yot her wise failto recogni zedan‐
ge rs.
The follo wing condition smus tbe fulf illed fora
lane chang e:
R Youar eon ahigh wayor high -speed major
ro ad.
R The vehicle speed isbe tween appr oximat ely
50 mph(80 km/h) and110mp h(1 80 km/h) .
R The neigh boring lane issepa ratedby abr o‐
ke nlane ma rking.
R Novehicle orobs tacle isde tected inthe
adjac entlane .
R Sincethelas ttime theve hicle wasst ar ted,
th esensor sha ve detected ave hicle atasuit‐
able distance behind your vehicle.
R ActiveLa ne Chang eAssi stisselec tedin the
multime diasystem.
R ActiveDis tance AssistDIS TRONI Cand Active
St eer ing Assis tar eactiv ated on highw ays. The
system isno tav ailable andmustbe react i‐
va tedin thefo llo wing situat ions:
R ActiveDis tance AssistDIS TRONI Cand Active
St eer ing Assis twe realready activat ed bef ore
ent ering thehighw ay.
R The system brief lydoes notde tect thero ad
yo uar eon asahigh wayor asim ilar road,
e.g .on afree wa yin te rsect ion.
As soon asActiveLa ne Chang eAssi stdetects a
su itab leroad, youcan react ivat eit wit hJ,
M orN. Dr
ivin gand parking229

Dr
iver dis pla yin theAssist ancemenu 1
Green arrow :la ne chang einit iated
2 Redar row :la ne chang ecan celed
When ActiveLa ne Chang eAssi stisavailable, the
± displa yappear salong withgr een arrow sin
th edr iver displa y.Ifth esy stem has been activa‐
te dbut isno tcur rently available, the± dis‐ pla
yappear salong withgr ay arrow sin thedr iver
displa y.
If no vehicle orobs tacle isde tected intheadja‐
cent laneandalane chang eis per mitted, the
lane chang ebegin saf te rth edr iver has indicat ed
br ief ly.The lane chang eis sho wntothedr iver
wit haflashin ggr ee nar ro w ne xt to the±
st eer ing wheel symbol. Green arro w 1 isdis‐
pla yedin theappr opriateadjacen tlane inthe
Assi stance menu inthedr iver displa y.The Lane
Change tothe Left messag e,forex am ple, also
appear s.
Ac tiveLa ne Chang eAssi stcan becance led in
va rious situations, includingthefo llo wing:
R Chang ein thesur round ingcond ition s(e. g.
de tected obs tacle ).
R The driver remo vesth eir hands from the
st eer ing wheel.
R The driver steer swit hto omuc hfo rc eor in
th eopposit edir ect ion.
R The driver mo vesth etur nsignal indicat orin
th eopposit edir ect ion. R
ActiveDis tance AssistDIS TRONI Cor Active
St eer ing Assis tis deactiv ated.
R The vehicle canno tmak eth elane chang eas
plan ned.
Canc ellationofActiveLa ne Chang eAssi stisdis‐
pla yedas follo ws :
R The arro w in theselect eddirect ion oftrave l
tur ns red.
R Acor responding messageappea rson the
dr iver displa y.
R Incer tain cir cums tances awa rning tone
sou nds. &
WARNIN GRisk ofacci dent whench ang ‐
ing lane toan occ upied adjacentlane
Lan eChan geAssi stcanno tal wa ys cle arly
de tect ifth eadjacen tlane isfree.
The lane chang emigh tbe init iated although
th eadjacen tlane isno tfr ee. #
Beforech ang inglane s,mak esur eth at
th eneighbor inglane isfree and ther eis
no dang ertoother road user s. 230
Drivin gand parking