2023 MERCEDES-BENZ A CLASS lane assist

R
Ø (red): system limits detected
R Ø (white,redhands): "handsonthesteer -
ing wheel" prom pt
% Duringthetransition from activ eto passiv e
st atus, theØ symbol issho wnasenlar ged
and 0ashing. Oncethesy stem ispassiv e,the
Ø symbol issho wnasgray intheInstr u-
ment Displa y.
% Depending ontheselect edvehicle setting s,
Ac tiveSt eer ing Assist maybe una vailable.
S S
t t
eer eer
ing and t ing
and touc ouc
hde t h
de tection ection
The driver isrequ ired tokeep their hands onthe
st ee ring wheel atall time sand beableto inter-
ve ne atanytime tocor rect thecour seoftheve hi-
cle and keep itin lane. Thedriver must expect a
ch ang efrom activ eto passiv emode orvice versa
at anytime . If
th esy stem detects that thedr iver has not
st eer edtheve hicle fora consider ableperiod of
time orhas remo vedth eir hands from thesteer ing
wheel, display1 appear s.Ifth edr iver still does
no tst eer theve hicle, awa rning tone sou nds in
add itionto thevisual warning messa ge.
If th edr iver does notre act tothewa rning fora
consider ableperiod, thesy stem can initiat ean
emer gency stop (/ page173) .
The warning isno tissued orisstopped whenthe
dr iver giv es con/ rmation tothesy stem:
R The driver steer sth eve hicle. R
Depen dingon t Depen
dingon the coun try he
coun try: :
th edr iver presses
a steer ing wheel buttonoroper ates Touc h
Contr ol
If Ac tiveSt eer ing Assist detects that asy stem
limi thas been reac hed, avisu alwa rning isissued
and awa rning tone sou nds.
Obs erve theno teson drivi ng systems andyour
re sponsi bility;yo uma yot her wise failto recogn ize
dang ers(/ page155).
Sy st Sy
stem limit s em
limit s
Ac tiveSt eer ing Assist hasalimit edsteer ing tor-
qu efo rlat eral guidance. Insome cases,th esteer -
ing interve ntion isno tsu1 cienttokeep theve hi-
cle inthelane ortodrive th ro ugh exits.
The system maybe impair edorma yno tfunction
in thefo llo wing instances:
R Ther eis poor visibility ,e.g. duetosno w,rain,
fo g, hea vyspr ay,gr eatl yva rying ambient light
or strong shad owson thero ad.
R Ther eis glar e,e.g .fr om onco mingtra1c,
dir ect sunl ight orre0ectio ns.
R Insu1 cientroad illumin atio n. 172172
Dr
iving and parking

R
The wind shield isdir ty,fo gg ed up, dam aged or
co veredin thevicinity ofthecamer a,e.g. bya
sti cker.
R No, orseveral,unclear lanemarkings arepr es-
ent forone lane, orthemar kings chang e
qu ickl y, forex am ple, inacons tructi onarea or
int ersecti ons.
R The lane marking sar ewo rnawa y,dar kor cov-
er ed up, e.g. bydirtor sno w.
R Ifth edist ance totheve hicle infront istoo
shor tand thus thelane markings canno tbe
de tected.
R The roadis na rrow and wind ing.
R Ther ear eobs tacles onthelane orprojecting
out intoth elane, suchas object markers.
The system doesno tpr ov ide assist anceinthefo l-
lo wing conditions:
R Ontight curvesand when turnin g.
R When crossin gint ersecti ons.
R Atroundabouts ortollst ations.
R When thetir epr essur eis toolow. &
W W
ARNI NG ARNI
NGRisk ofaccid ent ifAc tiveSt eer -
ing Assist unexpect edlyst ops function ing
If th esy stem limits ofActiveSt eer ing Assist
ar ere ac hed ther eis no guar anteethat the
sy stem will remain activeor will keep theve hi-
cle inlane . #
Alwayske ep your hands onthesteer ing
wheel andobser vethetra1c carefull y. #
Alwaysst eer theve hicle paying attent ion
to tra1 cco nd itio ns . &
W W
ARNI NG ARNI
NGRisk ofaccid ent ifAc tiveSt eer -
ing Assist unexpect edlyint erve nes
The detection oflane marking sand obje cts
ma ymalfu nctionand cause unexpect edsteer -
ing interve ntions . #
Steer accor dingtotra1 cco nd itio ns . AA
ct iv ct
ivat ing/ deact iv at
ing/ deact ivat ing A at
ing Act iv ct
ive St e
St eer eer
ing Assist ing
Assist
R R
eq eq
uir uir
ements: ements:
R ESP ®
is activ ated, but isno tint erve ning. R
ActiveDist ance AssistDIS TRONI Cis acti va-
te d.
Multimedi asy stem:
4 © 5
Settings 5
Quick Access #
Select 004FSteering Assist. FF
unction ofA unction
ofActiv ctiv
eEmer g e
Emer gency St ency
Stop Assist op
Assist If
th esy stem detects that thedr iver has not
st eer edtheve hicle fora consider ableperiod of
time orhas remo vedth eir hands from thesteer ing
wheel, display1 appear sin theInstr ument Dis-
pla y.Ifth edr iver still does notst eer theve hicle,
or giv es no con/r mation tothesy stem, awa rning Dr
iving andparking
173 173

to
ne sou nds inadd itionto thevisual warning mes-
sag e.
If th edr iver still does notre spond tothewa rning,
th eBeginning Emergency Stopmessag eappear s
in theInstr ument Display.Ifth edr iver still does
no tre spond ,Ac tiveDist ance AssistDIS TRONI C
re duces thespeed. Thevehicle isdecel erated in
st ag es toast ands till.
Depen dingon thecountr y,at speeds below
40 mph(6 0km /h)th ehazar dwa rning lights
switc hon automaticall y.
When theve hicle isstation ary, thefo llo wing
actions arecar ried out:
R The vehicle issecur edwithth eelectr icpar k-
ing brak e.
R ActiveDist ance AssistDIS TRONI Cis ended.
R The vehicle isunl ocked.
R Ifpossible, anemer gency callis pla ced tothe
Mercede s-Benzemergency callcent er.
The driver can cancel thedeceler ationatanytime
by per form ing one ofthefo llo wing actions:
R Steer ing R
Braking oracceler ating
R Deactiv atingActiveDist ance Assist
DIS TRONI C AA
ctiv ctiv
eLane Chang e
Lane ChangeAssi st e
Assi st FF
unctio nof A unctio
nof Activ ctiv
eLane Chang e
Lane ChangeAssi st e
Assi st
Ac tiveLane ChangeAssi stsupp orts thedr iver
when chang inglane sby appl ying steer ing torq ue
if th edr iver activ ates atur nsignal indicat or.
Obser vetheno teson drivi ng systems andyour
re sponsi bility;yo uma yot her wise failto recogn ize
dang ers(/ page155) .
Assis tance when chang inglane sis prov ided ifall
th efo llo wing conditions areme t:
R Youar edr iving onafree wa yor road withmul-
tip lelane sin thedir ection oftrav el.
R The neighbor inglane issepar ated byabr ok en
lane marking .
R Novehicle isde tected intheadjacent lane.
R The vehicle speed isbe tween 50mph
(80 km/h )and 110 mph(1 80 km/h). R
ActiveLane ChangeAssi stisswi tched onin
th emultimedia system.
R ActiveSt eer ing Assist isactiv ated and activ e.
If no vehicle isde tected intheadjacent laneanda
lane chang eis per mitt ed,thelane chang ebeg ins
aTer thedr iver has activ ated thetur nsignal indi-
cat or.This issho wntothedr iver wit hagr een
ar ro w ne xt to the± steer ing wheel symbol.
The Lane Change tothe Left messag e,forex am-
ple, also appear s.IfAc tiveLane ChangeAssi st
has been activatedwit hth etur nsignal indicat or
but alane chang eis no timmed iatelypossibl e,a
gr ay arro w appear sne xt to the± steer ing
wheel symbol, whichre mains green.
When lanechang eassis tance star ts, thetur nsig-
nal indicat orisaut omaticall yactiv ated along with
th edispla yin theInstr ument Display.
If th eassist ancegraphic issho wnwhen chang ing
lane s,an addit ionalarro w appear sin itpoin ting
to wa rdsth eadjacent lane(/page165).
If alane chang eis no tpossibl e,thear ro w isfaded
out aTer afew secon dsand ane wlane chang e
mus tbe initiat ed. Animmed iatelane chang eis 174174
Dr
iving and parking

onl
ypossible onfree wa ysect ionswit hout speed
lim its.
If th esy stem isim pair ed,ActiveLane Change
Assi stma ybe canc eled. Ifit is canc eled, the
Lane Change Cancel edmessag eappear sin the
Ins trumen tDispl ay.
In addit ion,a wa rning tone maysou nd, depending
on thesituation. &
W W
ARNIN G ARNIN
GRisk ofaccident whenchang ing
lane toan occupi edadjace ntlane
Lan eChang eAssis tcann otalw aysclear ly
de tect ifth eadjacent laneisfree.
The lane chang emig htbe initiat edalthoug h
th eadjacent laneisno tfr ee. #
Beforech ang inglane s,mak esur eth at
th eneighbor inglane isfree and ther eis
no dang ertoother road user s. #
Mon itor thelane chang e. &
W W
AR NIN G AR
NIN GRisk ofacciden tif Lan eChang e
Assis tune xpect edlyst ops funct ioning
If th esy stem limit ations forLane Chang e
Assist have been reac hed, ther eis no guar an-
te eth at thesy stem will remain active.
Lane Chang eAssis tcanno tth en assist youby
appl ying steer ing torq ue . #
Alwa ys monit orthelane chang eand
ke ep your hands onthesteer ing wheel.
Obser vethetra1c conditions andsteer
and/or brak eif necessar y. Sy
st Sy
stem limits em
limits
The system limitat ions ofActiveSt eer ing Assist
appl yto ActiveLane ChangeAssi st
(/ page171) .
The system mayals obe impair edorma yno tfunc-
tion inthefo llo wing situations:
R The sensor sin there ar bum peraredir ty,dam-
ag ed orcoveredby ast icke ror ice and snow,
fo rex am ple.
R The exterior lightin gsho wsamalf unct ion. %
The ActiveLane ChangeAssi stsens orsadjust
aut oma tically whi leacer tain dist ance isbeing
dr iven aTer theve hicle hasbeen delivered.
Ac tiveLane ChangeAssi stisuna vailable or
onl ypar tiall yav ailabl edur ing this teac h-in
pr ocess; noarro w appear sne xt to theØ
Ac tiveSt eer ing Assist symbol whenthetur n
signal indicat orisactiv ated.
Selecting A Selecting
Activ ctiv
eLane Chang e
Lane Chang eAssist e
Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Active LaneChange Assist #
Select thefunction . AA
ctiv ctiv
eBr e
Br ak ak
eAssist e
Assist FF
unction ofA unction
ofActiv ctiv
eBr e
Br ak ak
eAssist e
Assist
Ac tiveBr ak eAssi stcons istsofthefo llo wing func-
tions:
R Dist ance warning function
R Autonomo usbrak ing functi on
R Situa tion-d ependent brak ing assist anc e Dr
iving andparking
175 175

Yo
ucan prev ent theassist anceatanytime by
activ elyst eer ing.
Cor Cor
ner ner
ing funct ion (onl ing
funct ion (onl yv y
vehicle swit ehicle
swit hDr h
Dr iving ivi
ng
Assis t Assis
tance P ance
Pac k ac
kag ag
e) e)
If th esy stem detects arisk ofacolli sion withan
oncom ingvehicle when turnin gacr oss anonco m-
ing lane ,aut onom ousbraking canbeinitiat edat
speeds below9mp h(1 5km /h)be fore youha ve
leT thelane inwhic hyo uar edr iving. &
W W
ARNIN G ARNIN
GRisk ofaccident despiteEv a-
siv eSt eer ing Assist
Ev asiv eSt eer ing Assist cannotalw aysre cog-
niz eobje ctsorcom plextra1c situat ions
clear ly.
Mor eover,th esteer ing suppor tpr ov ided by
Ev asiv eSt eer ing Assist isno tsu1cien tto
avo idacollision. #
Alwayspa ycar eful att ent ion tothetra1c
situation; donotre ly on Evasiv eSt eer ing
Assist alone. #
Beprepar edtobrak eor swerve ifneces-
sar y. #
End thesuppor tby activ elyst eer ing in
non -critical situ atio ns. #
Drive at an appr opriatespeed ifth er e
ar epedestr iansclose tothepat hof your
ve hicle. Sy
st Sy
stem limits em
limits
Fu llsy stem perform ance isno tye tav ailabl efo ra
few secon dsaTer switchingontheve hicle oraTer
dr ivi ng o..
If Ac tiveBr ak eAssi stisim pair edorinoper ative
due toamalf unct ion,th e00C7 warning lamp
appear sin theInstr ument Display.
The system maybe impai redor ma yno tfun ction,
par ticular lyin thefo llo wing situations:
R Insno w,rain, fog, hea vyspr ay,if th er eis glar e,
in dir ect sunlight oringreatl yva rying ambient
light.
R Ifth esensor sar edir ty,fo gg ed up, dam aged or
co vered.
R Ifth esensor sar eim pair eddue tointerfere nce
fr om other radar sour ces, e.g.strong radar
re 0ectio nsinapar kingga rage . R
Ifaloss oftirepr essur eor amalf unctionin g
tir ehas been detected and displa yed.
R Incom plextra1c situations whereobjects
canno talw aysbe clear lyident i/ed.
R Ifpedestr iansorvehicles movequickl yint o
th esensor detection rang e.
R Ifped estr ians arehid den byother objects.
R Ifth etypical outline ofapedestr iancanno tbe
distin guished from thebac kgroun d.
R Ifapedestr ianisno tde tected assuc h,e.g .
due tospecial clothing orother objects.
R Ifth edr iver's seat beltisno tfa stene d.
R Oncurves withatight radius.
% The ActiveBr ak eAssi stsens orsadjust auto-
mati callywhile acer tain dist ance isbeing
dr iven aTer theve hicle hasbeen delivered.
Ac tiveBr ak eAssi stisuna vailable oronl ypar -
tiall yav ailabl edur ing thete ac h-in process.
A A
ctiv ctiv
atin g/deact iv atin
g/deact ivatin gA atin
gActiv ctiv
eBr e
Br ak ak
eAssis t e
Assis t
R R
eq eq
uir uir
emen ts: emen
ts:
R The vehicle isswitc hedon. Dr
iving and parking
179 179

%
V V
ehicles wit ehicles
withast h
ast andar andar
dIns d
Instr tr
ument Display ument
Display: :
A + +
symbol next to atra1c signintheInstr u-
ment Displa yindicat esthat addit ionaltra1c
sign sha ve been detected. These canalso be
displa yedin themedia displayand optionall y
in theHead-up Display.
If Tra1c Sign Assis tcann otdeterm ine themaxi-
mum permissible speed(e.g.duetomissing
signs), thefo llo wing displa yappear sin theInstr u-
ment Displa y: This
isdis pla yedcontinu ouslyif th eve hicle isin a
coun try wher eTra1c Sign Assis tis no tsuppor ted.
Tr a1c Sign Assis tis no tav ailabl ein all coun tries.
% Also obser vetheinf ormation ondispla ymes-
sag esinTra1c Sign Assis t(/ page337) . Sy
st Sy
stem limits em
limits
The system maybe impair edorma yno tfu nct ion
par ticu larlyin thefo llo wing situations:
R Ifth er eis poor visibility ,e.g. duetoinsu1c ient
illumination ofthero ad, highl yva riable shade
cond itions, rain, sno w,fogor hea vyspr ay.
R Ifth er eis glar e,e.g. from oncoming tra1c,
dir ect sunlight orre0ectio ns.
R Ifth ewindshield inthear ea ofthemultifun c-
tion camer ais dir ty,or ifth ecamer ais fogg ed
up, dam aged orcovered.
R Ifth etra1c signs arehar dto detect, e.g.due
to dir t,sno wor insu1cien tlightin g,or
because they areco vered.
R Ifth einf ormation inthena vig ation system's
digit almap isincor rect or out- of-dat e.
R Ifsign sar eambigu ous,e.g.ro ad sign sin road-
wo rksor inadjace ntlane s.
R Ifyo utur nshar plywhen passingtra1c signs
outside thecamer a's/eld ofvision. Se Se
tting tting
Tr Tr
a1c a1c
Sign Assis t Si
gn Assis t
R R
eq eq
uir uir
emen ts: emen
ts:
R Onl Onl
yv y
vehicle swit ehicle
swit hDr h
Dr iving Assis t ivi
ng Assis tance P ance
Pac k ac
kag ag
e: e:
Ac tiveDist ance AssistDIS TRONI Cand ECO
Assi stmust beacti vatedfo rth eaut omatic
adop tionofspeed limits.
Multimedia system:
4 © 5
Settings 5
Assistance
5 Traffic SignAssist
A A
ctiv ctiv
ating ordeactiv ating
ordeactiv atingaut ating
automatic adop omatic
adoptionof tion
of
speed limits(onl speed
limits(onlyv y
vehicles wit ehicles
withDr h
Dr iving Assist iving
Assist ance ance
P P
ac k ac
kag ag
e) e)
#
Select LimitAdoption. #
Switc hth efunction onoro..
The speed limitsdetected byTra1c Sign
Assis tar eaut omati callyadop tedby Active
Dist ance AssistDIS TRONI C.
% Ifone ofthefo llo wing systems isactiv ated,
th ede tected speed canbemanual lyadop ted
as thespeed limit:
R ActiveDist ance AssistDIS TRONI C
R Cruise control Dr
iving andparking
181 181

Blind
SpotAss istcanno twa rndriver sin this
situation. #
Alwayspa ycar eful att ent ion tothetra1c
situation andmaint ainasaf edist ance at
th eside oftheve hicle. Obser
vetheno teson drivi ng systems andyour
re sponsi bility;yo uma yot her wise failto recogn ize
dang ers(/ page155) .
Exit w Exit
war ar
nin g nin
g
The exitwa rning isan additional functionofBlind
Spo tAssist andcanwarnvehicle occupan tsabout
appr oaching vehicles whenleavingth eve hicle
when station ary. &
W W
ARNI NG ARNI
NGRisk ofaccid ent despiteex it
wa rning
The exitwa rning neit her reacts tostat iona ry
objects nortoper sons orroad user s
appr oaching youat agr eatl ydi.er ingspeed.
The exitwa rning canno twa rndriver sin these
situations. #
Alwayspa ypar ticu larattent ion tothe
tr a1 csitu ation whe nop ening th edoor s
and makesur eth er eis su1cien tclear -
ance. If
th er eis ave hicle inthemonit oring rang e, this is
indicat edintheoutside mirror.Ifave hicle occu-
pant opensth edoor ontheside withth ewa rning,
a wa rning tone sou nds and thewa rning lampin
th eoutside mirrorst ar ts to 0ash.
Thi saddi tion alfunc tion ison lyavailabl ewhen
Bli nd SpotAss istisac tive. Whe nth eex itwa rning
is activ ated, itcan warnvehicle occupan tsforup
to thre eminut esaTer switchingtheve hicle o..
The exitwa rning isno long eravailabl eonce the
wa rning lampin theoutside mirror0as hes thre e
times .
The exitwa rning isonl yan aid and nota substi-
tut efo rth eatt ention ofvehicle occupan ts.The
re sponsi bilityforopening andclosing thedoor s
and forlea ving theve hicle remains withth eve hi-
cle occupan ts. Sy
st Sy
stem limits em
limits
Bli nd Spo tAssis tand ActiveBlind SpotAssi stma y
be limit edinthefo llo wing situations, inpar ticular :
R ifth er eis dir ton thesensor sor thesensor s
ar eobscur ed
R inpoor visibility ,e.g. duetofog, hea vyrain or
sno w
R ifth er ear enar row vehicles, e.g.bicy cles or
mo torbik es
R ifth ero ad has very wide ornar row lane s
R ifve hicles areno tdr ivi ng inthemiddle oftheir
lane
Wa rnings maybe issued inerro rwhen driving
close tocrash barrier sor similar continuous lane
bor ders.Alw aysmak esur eth at ther eis su1cien t
dist ance totheside forot her tra1c orobs tacles.
Wa rnings maybe interrupted when driving along-
side long vehicles, forex am ple truc ks,fo ra pr o-
long edtime.
Blind SpotAssist isno toper ational whenreve rse
ge ar iseng aged. Dr
iving and parking
185 185

AA
ctiv ctiv
atin g/deactiv atin
g/deactiv atingBli nd Spo atin
gBli nd Spo tAssis t
Assis tor t
or
A A
ctiv ctiv
eBli nd Spo e
Bli nd Spo tAssis t t
Assis t
Mul timed iasystem:
4 © 5
Settings 5
Assi stance #
Activateor deac tivateBlind SpotAssist.
or #
Activateor deac tivateAct .Blind SpotAssist . AA
ctiv ctiv
eLane K e
Lane Keeping Assist eeping
Assist FF
unctio nof A unctio
nof Activ ctiv
eLane K e
Lane Keeping Assist eeping
Assist
Ac tiveLane Keeping Assist monitorsth ear ea in
fr ont ofyour vehicle bymeans ofthemultifun ction
camer a(/ page155). Itser vesto protect you
ag ains tuni ntent ionallylea vingyo ur lane. Youwill
be warned byvibr atio npuls esinthesteer ing
wheel andguided byacour se-co rrecting brak e
application backint oyo ur lane.
Ac tiveLane Keeping Assist isavailabl ein the
speed rang ebe tween 37mph(60 km/h) and
124 mph(2 00 km/h).
Ac tiveLane Keeping Assist canneither reduce the
ri sk ofan acciden tif yo ufa ilto adap tyo ur driving
sty lenor override thelaws ofphysics. Itcanno t ta
ke intoaccount road, weather ortra1c cond i-
tio ns. ActiveLane Keeping Assist isonl yan aid.
Yo uar ere sponsi bleformaint aining asaf edis-
ta nce totheve hicle infront ,fo rve hicle speed, for
br aking ingood timeandforst ay ing inlane.
The status ofActiveLane Keeping Assist isdis-
pla yedin theon-boar dcom puter:
R 00B0 (gre en): ActiveLane Keeping Assist is
activ eand oper ating.
R 00B0 (gra y): ActiveLane Keeping Assist is
activ ebut notoper ating.
R ·: ActiveLane Keeping Assist isdeactiv a-
te dor ther eis amalfunction. If
alane-cor rectin gbr ak eapplicat ionoccur s,dis-
pla y1 appear sin theInstr ument Display.
The system doesno tapp lythebr ak eif yo uacti-
va te thetur nsignal indicat or.
V V
ehicles wit ehicles
withDr h
Dr iving Assist iving
Assist anceP ance
Pac k ac
kag ag
e: e:
ifth e
sy stem detects anobs tacle, suchas ano ther vehi-
cle intheadjacent lane,itwill appl yth ebr ak e
re ga rdless ofthetur nsignal indicat or.
Yo uar ewa rned byvibr atio nsinthesteer ing wheel
in thefo llo wing circumst ances:
R ActiveLane Keeping Assist detects alane
mar king .
R Afront wheel drives ove rth is lane marking.
Conditions f Conditions
for acour or
acour se-cor r se-cor
recting br ecting
brak ak
eapplica - e
applica -
tion (v tion
(vehicles wit ehicles
without Dr hout
Driving Assist iving
Assist anceP ance
Pac k ac
kag ag
e) e)
Lane markings weredetected on both sides ofthe
lane. Thefront wheel drives ove ra continuous
lane marking.
% Abr ak eapplication maybe interrupted atany
time ifyo usteer slightl yin theopposit edir ec-
tion. Dr
iving andparking
187 187