MERCEDES-BENZ SLC ROADSTER 2020 Owner's Manual

The
ECO display consistsofthree section s,
with aninner andouter area.Thesection scor-
respond tothe following threecategories: 0043
Acce
leration (evaluation ofall
acceleration processes):
R the outer areafillsupand the
inner arealights upgreen: moder-
ate acceleration ,especially at
higher speeds
R the outer areaempties andthe
inner areaisgray: sporty acceler-
ation 0044
Coasting
(evaluation ofall deceler-
ation processes):
R the outer areafillsupand the
inner arealights upgreen: antici-
patory driving, keeping yourdis-
tanc eand early release ofthe
accelerator. Thevehicle can
coast without useofthe brakes.
R the outer areaempties andthe
inner areaisgray: frequent heavy
braking 0087
Constant
(continuous evaluation
over theentir ejourney):
R the outer areafillsupand the
inner arealights upgreen: con-
stant speed andavoidance of
unnecessary accelerationand
deceleration
R the outer areaempties andthe
inner areaisgray: fluctuations in
speed The
three innerareas display thecurrent driv-
ing style andlight upgreen asaresult ofap ar-
ticularly economicaldriving style.Dependin g
on the driving situation, uptotwo areas may
light upsimultaneously.
At the beginning ofthe journey, thethree
outer areas areempty andfillup asaresult of
econom icaldriving. Ahigher levelindicates a
more econom icaldriving style.Ifthe three
outer areas arecompletely filledatthe same
time, thedriver hasadopted themost eco-
nomical drivingstyleforthe selected settings
and prevailing conditions.TheECO display
border lightsup.
The ECO display doesnotindicate theactual
fuel consumpt ion.Theadditionally achieved range
display edunder Bonus fr.start Bonus
fr.start does
not indicate afixed consumpt ionreduction .
In addition todriving style,theactual con-
sumption isaffect edbyother factors,such as:
R load
R tire pressure
R cold start
R choice ofroute
R active electric alconsumer s
These factorsarenot included inthe ECO dis-
play.
An econom icaldriving stylespecially requires
driving atmoderate enginespeeds.
Achievin gahigher value inthe categories
"Accelerat ion"and"Constant ":
R observe thegearshift recommendations .
R drive thevehicle indrive program Cor E.
In urban trafficand stop- start traffic,drive pro-
gram Cis recomm ended.
On long journeys atac onst antspeed, e.g.on
the highway, onlytheouter areafor"const ant"
will change.
The ECO display summarizes thedriving style
from thestart ofthe journey toits completion .
Therefore, therearemore marked changes in
the outer areas atthe start ofajourney. On
longer journeys, therearefewer changes. For
more marked changes, performamanual rest
(Y page 172).
Further informationonthe ECO display
(Y page 171). Br
aking
Import antsafety notes G
WARNIN
G
If you shift down onaslippery roadsurface
in an attempt toincrease theengine's brak-
ing effect ,the drive wheels couldlosetheir
grip. There isan increased dangerofskid-
ding andaccident s.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface. Driving
tips
139Driving andparking Z

Downh
illgrad ient s !
On
long,steep gradie nts, you mus tred uce
th el oad ontheb rake s.To use engin eb rak-
in g, shi ftto alowe rgear ingoo dtime. Thi s
hel psyou toavo idoverh eatingt he bra kes
and wear ingt hemo utexce ssi vel y.
Whe nmakingu seofthee ngineb raking
ef fect ,iti sp ossib lethat ad rive whee lmay
no tturnf or som etime,e.g. inthec aseo f
sudd enlych ang ingo rslipper yroads urfac e
co nd ition s.Thi scouldcau sedam agetothe
dri ve train .Thist ypeo fdam age isno tc ov-
ere dbythe Mer cedes -Ben zw arrant y.
Chan geinto alowe rgear ingoo dtimeo nlon g
and steep down hillgradie nts. Thi sise spec ially
imp ortant ifth ev ehicle islade n.
Thi salso appli esifyou haveactivat edcruise
co ntro lo rA ctiveD istan ceAssis tD ISTR ON IC.
Hea vyandligh tloa ds G
WAR
NING
If you restyour foot on theb rake peda l
whil edrivin g,theb raking sys temc anover-
heat .Thisi nc rea sest he stopp ingd ista nc e
and canevencause theb raking sys temt o
fail .The re isar isko fana cciden t.
Nev eruse theb rake peda lasaf ootre st.
Nev erdepr esstheb rake peda land the
acc eler ator peda latthe sam etime.
! De
pre ssing theb rake peda lcon stan tly
res ultsine xces sive and premat ure wear to
th eb rake pads .
If th eb rake sh aveb eens ubj ectedt oa heav y
load ,don otstop thev ehicle imm ediately, but
dri ve on foras hortwhil e.Thi sallow sthe air-
flo wt ocoolthe bra kesm oreq uickly.
Wet road s If
you havedriven foral ongt imeinh eav yrain
wit hout braking ,the re may beadelayed reac-
ti on from theb rake sw hen braking fort he first
ti me. Thism ayalso occur afterthev ehicle has
bee nwash edordriven thro ugh deepwater.
You then hav etod epr ess theb rake peda l
mo refirmly. Main tain ag reater dis tanc ef rom
th ev ehicle in fron t.
Af terd rivin go naw etroad orhav ingt he veh i-
cl ew ash ed, brakefirmly whilepayin gattenti on to
thet raffic co nd ition s.Thi sw illwarm upthe
bra kediscs,the reby dryi ngthem morequic kly
and protectingt hema gain stcorrosi on.
Lim ited brak ing performa nce onsalt-
tr eat edroad s If
you drive on salt edroads, alayer ofsalt resi-
due may form ontheb rake discsand brake
pads .Thisc an res ult inas igni fic ant lylon ger
bra king distanc e.
R In order topre ven tany salt build -up,apply
th eb rake so ccasion ally whilepayin gatten-
ti on tothet raffic co nd ition s.
R Care fullydepr ess theb rake peda land the
beg inning and endo faj ourney.
R Main tain ag reater dis tanc et ot he veh icle
ahea d.
Ser vici ngtheb rake s !
The
brakeflui dlevel may betool ow, if:
R ifth er ed bra kewarn ingl amp lightsup in
th ei nstru ment clust erand
R you hear awarningt onew hilet he engin e
is run ning
Obs erveaddit ionalwarn ingm essag esinthe
mult ifunction display.
The brakeflui dlevel may betool ow due to
bra kepad wear orleak ingb rake lines.
Hav ethe bra kesys temc hecked imm edi-
at ely. Consult aqualif iedspecialis twork-
sho ptoa rrang ethis.
! As
theE SP®
sys temo perat es aut omati-
cal ly,thee nginea nd thei gn ition mus tbe
swit ched off( theS martKey mustbeinp osi-
ti on 0092 or0047 inthei gn ition lock),ift he
elec tric par king bra keistested on abraking
dyn amo meter(ma ximum 10sec onds).
Br ak ingt rigg ere dautom atically byESP®
may causesev ere dam agetotheb rake sys -
te m.
Al lc he cksa nd main tenan cewor konthe bra ke
sys temm ustb ec arrie do utataq ualif iedspe-
ci alis tworks hop .
Hav ebrake pads inst alled andbrakeflui d
rep laced ataq ualif iedspecialis tworks hop .
If th eb rake sys temh asonlybee nsubj ectto
mo der atel oad s,you should test thef unction -
alit yofyour brakesa treg ular inte rvals.
In fo rm ation onBAS(Brak eA ssist) (Y page 57). 140
Dri
ving tipsDri ving andp ark ing

Mercedes-Ben
zrecommen dsthat youonly
have brake pads/linings installedonyour vehi-
cle which havebeen approved forMercedes-
Benz vehicles orwhich correspond toan
equival entqual itystandard. Brakepads/
linings whichhavenotbeen approved for
Mercedes-Ben zvehicles orwhich arenot ofan
equival entqual itycould affect yourvehicle's
operating safety.
Mercedes-Ben zrecommen dsthat youonly use
brake fluidthathasbeen specially approved
for your vehicle byMercedes-Ben z,or which
corresponds toan equival entqual itystandard.
Brake fluidwhich hasnotbeen approved for
Mercedes-Ben zvehicles orwhich isnot ofan
equival entqual itycould affect yourvehicle's
operating safety.
High-perf ormance brakesystem
(exce ptMercedes-AMG SLC43) AMG
brake systems aredesigned forheavy
loads andhave componen tswith correspond-
ing properties. Thismay lead tonoise when
braking. Thiswilldepend on:
R Speed
R Braking force
R Ambient condition s,e.g. temperature and
humidity
The wear ofindividual componen tsof the
brake system, suchasthe brake pads/linings
or brake discs, depends onthe individual driv-
ing style andoperating conditions.
For this reason, itis impossible tostate amile-
age that willbevalid under allcircumstan ces.
An aggressive drivingstylewilllead tohigh
wear. Youcanobtain moreinformation onthis
from aqualified specialist workshop.
New andreplaced brakepadsanddiscs only
reach theiroptimum brakingeffectaftersev-
eral hundred kilometers ofdriving. Compen-
sate forthis byapply inggreater forcetothe
brake pedal. Keepthisinmind, andadapt your
driving andbraking accordingly duringthis
break-in period.
Exc essive heavybraking resultsincorrespond-
ingly highbrake wear.Observe thebrake sys-
tem warning lampinthe instrumen tcluster
and note anybrake status messages inthe
multifunction display.Especially forhigh per-
formance driving,itis important tomaintain
and have thebrake system checkedregularly . Driving
onwet roads
Hydr oplaning If
water hasaccumulated toac ertain depthon
the road surface, thereisad anger ofhydro-
planing occurring.
For this reason, inthe event ofheavy rainorin
condition sinw hich hydropla ningmayoccur,
you must driveinthe following manner:
R lower yourspeed
R avoid ruts
R avoid sudden steering movement s
R brake carefully
Driving onflooded roads !
Do
not drive through floodedareas.Check
the depth ofany water before driving
through it.Drive slowly through standing
water. Otherwise, watercouldenterthe
vehicle interior orengine compartmen t.It
can then damage theengine's orautomatic
transmission' selectronic componen ts.It
can also besucked inby the engine's air
intake connection andcause engine dam-
age. Winter
driving G
WARNING
If you shift down onaslippery roadsurface
in an attempt toincrease theengine's brak-
ing effect ,the drive wheels couldlosetheir
grip. There isan increased dangerofskid-
ding andaccidents.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface. G
DANGER
If the exhaust pipeisblocked oradequ ate
ventilation isnot possible, poisonous gases
such ascarbon monoxide (CO)mayenter
the vehicle. Thisisthe case, e.g.ifthe vehi-
cle becomes trappedinsnow. Thereisar isk
of fatal injury.
If you leave theengine orthe auxilia ryheat-
ing running, makesuretheexhaust pipeand
area around thevehicle areclear ofsnow. Driving
tips
141Driving andparking
Z

To
ensure anadequa tesupply offresh air,
open awindow onthe side ofthe vehicle
that isnot facing intothewind.
Have yourvehicle winter-proofed ataq ualified
specialist workshop atthe onset ofwinter.
Drive particularly carefullyonslippery road
surfaces. Avoidsudden acceleration ,steerin g
and braking maneuvers. Donot use cruise
cont rol.
If the vehicle threatenstoskid orcann otbe
stopped whenmoving atlow speed:
X Shift thetrans mission toposition 005C.
The outside temperat ureindicator isnot
designed toserve asan ice-warnin gdevice
and istherefor eunsuitable forthat purpose.
Changes inthe outside temperat urearedis-
played afterashort delay.
Indicat edtemperat uresjustabove thefreezin g
point donot guarantee thattheroad surface is
free ofice. The road maystillbeicy, especially
in wooded areasoron bridges. Thevehicle
could skidifyou failtoadapt yourdriving
style. Always adaptyourdriving styleanddrive
at as peed tosuit theprevailing weathercondi-
tions.
You should payspecial attentiontoroad con-
ditions whentemperat uresarearound freezing
point.
For more inform ationondriving withsnow
chains, see(Ypage 271).
For more inform ationondriving withsummer
tires, see(Ypage 270).
Observe thenotesinthe "Winter operation"
section (Ypage 270). Driving
systems Cruise
control
General notes Cruise
controlmaintains aconst antroad
speed foryou. Itbrakes automatically inorder
to avoid exceeding thesetspeed. Onlong and
steep downhill gradients, especiallyifthe vehi-
cle isladen, youmust select alower gearin
good time. Bydoing so,you willmake useof
the braking effectofthe engine. Thisrelieves
the load onthe brake system andprevent sthe brakes
fromoverheating andwearing too
quickly.
Use cruise controlonly ifroad andtrafficcon-
ditions makeitappropriate tomaintain a
steady speedforaprolonged period.Youcan
store anyroad speed above20mph
(30 km/ h).
Import antsafety notes If
you failtoadapt yourdriving style,cruise
cont rolcan neither reducetherisk ofan acci-
dent noroverride thelaws ofphysics. Cruise
cont rolcann ottake intoaccount theroad,
traff icand weather conditions.Cruise control
is only anaid. You areresponsible forthe dis-
tanc etot he vehicle infront ,for vehicle speed,
for braking ingood timeandforstaying in
lane.
Do not use cruise control:
R in road andtrafficcondit ionswhich donot
allow youtomaintain aconst antspeed e.g.
in heavy trafficor on winding roads
R on slippery roadsurfaces. Brakingoraccel-
erating couldcause thedrive wheels tolose
tract ionand thevehicle couldthenskid
R when thereispoor visibility, e.g.due tofog,
heavy rainorsnow
If there isac hange ofdrivers, advisethenew
driver ofthe speed stored.
Cruise control lever 0043
Tostore thecurrent speedorah igher
speed
0044 Tostore thecurrent speedorcalls upthe
last stored speed
0087 Tostore thecurrent speedoralower
speed
0085 Todeactivate cruisecontrol 142
Driving
systemsDriving andparking

When
youactivat ecruise control,the stored
speed isshown inthe multifunc tiondisplay for
five secon ds.The speed isthen permanen tly
displayed inthe status indicator togetherwith
the 00B2 symbol.
In vehicles withasegment circleinthe speed-
ometer ,the segment sbetween thecurren tly
stored speedandtheend ofthe segment cir-
cle light up.
Storing, maintaining andcalling upa
speed Storing
andmaint aining aspeed
X Acc elerate thevehicle tothe desired speed.
X Briefly pressthecruise controllever up0043
or down 0085.
X Remove yourfootfrom theaccelerat or
pedal.
Cruise controlisactivat ed.The vehicle auto-
matically maintainsthe stored speed.
You canstore thecurren tspeed ifyou are
driving fasterthan20mph (30km/ h).
i Cruise
controlmay beunable tomaintain
the stored speedonuphill gradients .The
stored speedisresumed whenthegradient
evens out.Cruise controlmaintain sthe
stored speedondownhill gradients byauto-
matically applyingthebrakes.
Storing orcalling upaspeed G
WARNIN
G
If you callupthe stored speedanditdiffers
from thecurren tspeed, thevehicle acceler-
ates ordecelerates. Ifyou donot know the
stored speed, thevehicle couldaccelerat e
or brake unexpec tedly.There isar isk ofan
accident .
Pay atten tiontothe road andtrafficcondi-
tions before callingupthe stored speed. If
you donot know the stored speed, storethe
desired speedagain.
X Briefly pullthecruise controllever towards
you 0087.
X Remove yourfootfrom theaccelerat or
pedal.
The first time cruise controlisactivat ed,it
stores thecurren tspeed orregulates the speed
ofthe vehicle tothe previously stored
speed.
Setting aspeed G
WARNIN
G
Keep inmind thatitmay take abrief
momen tuntil the vehicle hasmade thenec-
essary adjustmen ts.
Inc rease ordecrease thesetvehicle speed
to av alue thattheprevailing roadcondit ions
and legal speed limitspermit. Otherwise,
sudden andunexpec tedaccelerat ionor
deceleration ofthe vehicle couldcause an
accident and/orserious injurytoyou and
others .
X To
adj ust the setspeed in1m phincre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres-
sure point forahigher speed, ordown 0085
for alower speed.
Ever ytime thecruise controllever is
pressed upordown, thelast speed stored is
incr eased orreduced.
X To
adj ust the setspeed in5m phincre-
ments (10km/h increments): briefly
press thecruise controllever up0043 past the
pressure pointforahigher speed, or
down 0085for alower speed.
Ever ytime thecruise controllever is
pressed upordown, thelast speed stored is
incr eased orreduced.
i The
speed indicated inthe speedometer
may differ slightly fromthespeed stored.
i Cruise
controlisnot deactivat edifyou
depress theaccelerat orpedal. Forexample,
if you accelerat ebriefly toovert ake,cruise
cont roladjusts thevehicle's speedtothe
last speed stored afteryouhave finished
overt aking. Driving
systems
143Driving andparking Z

Deact
ivating cruis econt rol The
reare severalways todeac tivat ecruise
co ntro l:
X Brief lypre ssthec ruise contro llev er for-
ward s0043 .
or X Brak e.
Crui secontro lisa utom atically deac tivat ed if:
R you engage thee lectric par king bra ke
R you aredrivin ga tles st han2 0m ph
(30 km/h)
R ES P®
inte rven es oryou deac tivat eE SP®
R on veh icles withm anual trans mis sion,you
shi ftto ag ear that istooh igh, and asa
res ult thee ngines peed istool ow
R Brak eA ssisti nt erve nes
R you moveout oftrans mis sionp osition 005B
If cr uise contro lisd eac tivat ed, you willhear a
warn ingt one.You willsee theCru ise Con‐ Cru
ise Con‐
tro lO ff tro
lO ffmes sageint he mult ifunction dis-
play fora ppr oximat elyfives econ ds.
i Whe
nyou swit chofft he engin e,thel ast
spe edstor ed isclear ed. Act
ive Dist ance Assi stDIST RONIC
Gen eral not es Ac
tive Distanc eAssistD ISTR ON ICreg ulat es
th es peed and automatically helpsyou main -
ta in thed ista nc ef romt heveh icle det ectedi n
fr on t.Veh icles are detectedw itht he aid ofthe
rad arsen sor system. Active Distanc eAssist
DI ST RON ICbra kesa utom atically toavo id
ex ce edin gthe set speedortomain tain the
des ignated distanc ef romt heveh icle in fron t. Chan
geinto alowe rgear ingoo dtimeo nlon g
and steep down hillgradie nts. Thi sise spec ially
imp ortant ifth ev ehicle islade n.By doin gso,
you willmak euseoftheb raking effect of the
en gin e.Thi sreliev es thel oad ontheb rake sys -
te ma ndpre ven tstheb rake sf romo verheat ing
and wear ingt oo quic kly.
If Ac tive Distanc eAssistD ISTR ON ICdet ects
th at there isar isko fac ollis ion withthe veh i-
cl ei nf ront,y ou will bewarn edvisually and
audib ly.Active Distanc eAssistD ISTR ON IC
can notp reven tac ollis ion without yourinte r-
ven tion .A nintermi ttent warn ingt onew illthen
soun dand thed ista nc ew arningl amp willlight
up inthei nstru ment clust er. Brak ei mm edi-
at ely inorder toincr ease thed ista nc ef rom
th ev ehicle in fron t,or take eva sivea ction ,pro-
vid ed itis saf etod oso.
Fo rA ctiveD istan ceAssis tD ISTR ON ICto
ass istyou when drivin g,ther adar sen sor sys-
te mm ustb eo perat ion al.
Ac tive Distanc eAssistD ISTR ON ICope rates in
th es peed ran gebet ween 0mph(0km /h) and
12 0m ph(20 0km/ h).
Do not useA ctiv eDistance AssistDISTR ONIC
on roa dswith stee pgradients .
As Activ eDistance AssistDISTR ONICtrans-
mits rada rw aves ,itc an res emb lethe rada r
de tecto rsof the responsi blea uthor ities. You
can referto the releva ntcha pterint he Opera -
tor' sM anualifq uestions area sked abou tthis.
i USA
only:Thi sd eviceh asbeen appro ved
by the FCC asa"Vehicu larR adar Sys tem" .
The rada rs ensor isinte ndedfor usei na n
au tomo tiverada rs ystem only.Re mov al,
tam perin g,or alteri ngofthe devic ew illv oid
any warrantie s,and isnot permi tted bythe
FCC .Don ottam perw ith, alter, orusei na ny
non-a pprov edway.
Any unauthorized mod ificati ontothisd evice
cou ldvoi dthe user' sa uthor itytoopera te
the equipme nt.
i Ca
nad aonly: Thi sd evicec omp lies with
RSS -210 ofIndu stry Canad a.Op era tionis
su bje ctto the followi ng two cond itions:
1. Thi sd evicem aynot causeinte rferenc e,
and
2. Thi sd evicem usta ccep ta ny inte rferenc e
rece ived,incl uding inte rferenc ethatm ay
cau seund esired opera tiono fthe devic e.
Re mov al,t am perin g,or alteri ngofthe
de vic ew illv oida nywarrantie s,and isnot 14
4 Dr
ivi ng system sDrivi ng andp arki ng

permit
ted.Donot tamper with,alter, oruse
in any non-approv edway.
An yu nauthoriz edmodificat iontothis device
could voidtheuser's authorit ytoo perate
the equipment .
Impor tantsafet ynotes G
WARN
ING
Ac tive Distance Assist DISTRONIC doesnot
react to:
R people oranimals
R stat ionary objectsinthe road, e.g.stop-
ped orparked vehicles
R onc oming vehicles andcrossing traffic
As aresult, Active Distance Assist
DIS TRONIC mayneither give warning snor
int erven eins uch situation s.There isar isk
of an acciden t.
Always paycareful attention tothe traffic
situation andbeready tobrake. G
WARN
ING
Ac tive Distance Assist DISTRONIC doesnot
react to:
R people oranimals
R stat ionary objectsinthe road, e.g.stop-
ped orparked vehicles (vehicles without
the Driv ingAssist ancepackage)
R stat ionary objectsinthe road, e.g.stop-
ped orparked vehicles, ifsufficien tdetec -
tion isnot possible (vehicles withtheDriv -
ing Assist ancepackage)
R onc oming vehicles andcrossing traffic
As aresult, Active Distance Assist
DIS TRONIC mayneither give warning snor
int erven eins uch situation s.There isar isk
of an acciden t.
Always paycareful attention tothe traffic
situation andbeready tobrake. G
WARN
ING
Dist ance keepin gassistan tcann otalways
clearly identifyother roadusers andcom-
plex trafficsituation s. In
such cases, distanc ekeepin gassistan t
can:
R accelerat eorbrake thevehicle unexpec t-
edly
R int erven eunexpec tedly
There isar isk ofan acciden t.
Contin uetodrive carefully andbeready to
brake, especially ifdistanc ekeepin gassis-
tant warns you. G
WARN
ING
Ac tive Distance Assist DISTRONIC brakes
your vehicle withupto50% ofthe maximum
possible decelerat ion.Ifthis decelerat ionis
not sufficien t,Ac tive Distance Assist
DIS TRONIC alertsyouwith avisual and
acoustic warning.There isar isk ofan acci-
dent .
Adj ust your speed inthese cases andmain-
tain sufficien tdistanc e.
Apply thebrakes yourself and/ortakeeva-
sive action .
! When
Active Distance Assist DISTRONIC
or the HOLD function isactiv ated, thevehi-
cle brakes automatic allyincert ainsitua-
tion s.
To avoid damage tothe vehicle, deactivate
Ac tive Distance Assist DISTRONIC andthe
HOLD function inthe following orsimilar sit-
uations:
R when towing thevehicle
R in the carwash
Ac tive Distance Assist DISTRONIC canneither
reduce therisk ofan acciden tify ou fail to
adapt yourdriving style,noroverr idethe laws
of physics. Active Distance Assist DISTRONIC
cann ottake intoa ccoun troad, weather ortraf -
fic con dition s.Ac tive Distance Assist
DIS TRONIC isonly anaid. You arerespon sible
for the distanc etot he vehicle infron t,for
vehicle speed,forbrakin ging ood time andfor
staying inyour lane. Driving
systems
145Driving andparking Z

Do
not useA ctiv eDistance AssistDISTR ONIC:
R In roa dand trafficc ond itions which donot
al lo wy outoma inta inac ons tant spee d, e.g .
in he avyt raffico ronw indi ng roa ds
R on slip pe ry roa dsurfaces .Braking oracc el-
era ting couldcau sethe drive wheelsto lose
tra ctio nand the vehiclec ouldthe nskid
R In po or vis ibility ,e .g.d ue tofog ,heavy rain
or snow
Activ eDistance AssistDISTR ONICm aynot
de tect narrow vehicles drivin ginf ront, e.g.
moto rcycles,or veh icles drivin ginas tagge red
for ma tion.
In partic ular ,the detecti onofobsta clescan be
imp aired if:
R The reisdirt on the sensorsoranythi ng else
cove ringthe sen sors
R The reissnow orheavyr ain
R The reisinte rferenc ebyothe rrad ar sou rces
R The reares trong rada rreflectio ns,forexa m-
pl ei np arkin gg arag es
If Activ eDistance AssistDISTR ONICnolon ger
de tects avehiclei nf ront, Distance Pilot
DISTR ONICm ayune xpected lyacc elera teto
the spee ds tored.
Thi sspeed may:
R Be too high ifyo ua redrivin ginat urning
la ne oran exitlan e
R Be sohigh when drivin gint he right-ha nd
la ne tha tyou ove rtake veh icles inthe left-
ha nd lane
R Be sohigh inthe left lane tha tyou pass
veh icles drivin go nthe right
If the reisac hange ofdri ver s,ad vis ethe new
dri ver ofthe spee ds tored. Cru
isec ontro llev er Cr
uise contr ollever
0043 Tostor ethe cur rent spee do rah ighe r
sp ee d
0044 Toset aspecifie dm inimu md ista nce
0087 Tostor ethe cur rent spee do rcallu pt he
la st stor edspee d
0085 Tostor ethe cur rent spee do ral ower
sp ee d
0083 Todeacti vate Activ eDistance Assist
DISTR ONIC
Ac tiv atin gActiveD istan ceAssist
DI STRO NICand storing,main taining
and callin gu pas peed Impo
rtant safety notes
! Wh
enActiv eDistance AssistDISTR ONIC
or the HOLD functio nisa ctivated ,the veh i-
cle brakes automa ticallyi nc erta insitua -
tio ns.
To avoidd amaget ot he veh icle, de acti vate
Activ eDistance AssistDISTR ONICandthe
HOLD functio nint he followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
To acti vate Activ eDistance AssistDISTR ONIC,
the followi ng cond itions mustbe fulfilled :
R the enginemustbe started .Itm aytake up
to two minutesofdrivin gb efor eA ctiv eDis-
tance AssistDISTR ONICisready for use.
R the electri cparkin gb rake mu stbe released .
R ESP ®
mu stbe acti ve,butn ot inte rvening .
R Activ eParkin gA ssistmu stnot beacti vated .
R the transmi ssion mu stbe inpo sitio n005B. 14
6 Dr
ivi ng system sDrivi ng andp arki ng

R
the driver 'sdo or mu stbe closedw heny ou
shi ftfro m005D to005B oryour seat beltmu st
be faste ned .
R the front-pa ssenge rdoorm ustb ec lose d.
R the vehiclem ustn ot ski d.
Ac tiv atin g
X Bri eflyp ullt he cru isec ontro llev er tow ards
yo u0085,u p0043 ordown 0044.
Activ eDistance AssistDISTR ONICisa ctiva-
ted .
X To
adjus tthe sets peed in1m phincre -
men ts(1 km/ hincremen ts):bri eflyp ress
the cruisec ontro llev er up 0043 tothe pres-
su re point for ahighe rs peed, ordown 0044to
the pressu repoint for alow erspee d.
Ever ytimet he cru isec ontro llev er is
pre sse dupo rdow n,the last spee ds tored is
incr easedo rred uce d.
or X To
adjus tthe sets peed in5m phincre -
men ts(10k m/ hincremen ts):bri efly
pre ssthe cruisec ontro llev er up 0043 past the
pre ssu repoint for ahighe rs peed, or
do wn 0044past the pressu repoint for alow er
sp ee d.
Ever ytimet he cru isec ontro llev er is
pre sse dupo rdow n,the last spee ds tored is
incr easedo rred uce d.
X Re mov eyourfoo tfromt heacc elera tor
pe dal.
Yo ur veh iclea daptsi ts spee dt othato fthe
veh iclei nf ront, buto nlyu ptothe desired
stor edspee d.
i If
yo ud on otfullyr elea se the accelera tor
pe dal,the Active DistanceAssist pas‐ Act
ive DistanceAssist pas‐
siv e siv
emes sage appe arsi nt he mu ltifu nctio n
di sp lay. The setd ista nce toas lowe r-m oving
veh iclei nf ront willthe nnotbe mainta ined.
Yo uw illb ed rivin ga tthe spee dy ou deter-
mi ne bythe positio no fthe acc elera tor
pe dal.
Yo uc an also acti vate Activ eDistance Assist
DISTR ONICwhens tatio nar y.The lowe stspee d
tha tcan be setis2 0m ph(30 km/h ).
Ac tiv atin gatthe curren tspeed/ last
sto red speed G
WA
RNING
If yo uc allu pt he stor edspee da nd itdiffe rs
fro mt hecur rent spee d, the vehiclea cceler- ate
sordecelera tes.Ify ou do not know the
stor edspee d, the vehiclec ouldacc elera te
or bra keune xpected ly.T her eisar isko fan
acc ident.
Pa ya ttentio ntot he roa dand trafficc ond i-
tio ns befor ec alling up the stor edspee d. If
yo ud on otknow thestor edspee d, stor ethe
de sired spee da gain.
X Bri eflyp ullt he cru isec ontr ollever towards
yo u0085.
X Re mov eyourfoo tfromt heacc elera tor
pe dal.
Th ef irst tim eA ctiv eDistance Assist
DISTR ONICisa ctivated ,its tor es the current
sp ee do rreg ulate sthe spee do fthe veh icle
to the previouslystor edspee d.
Pul ling awayand driving
X If
yo uw anttop ulla wa yw ithA ctiveD is-
tanc eAssistD ISTRO NIC:rem ove your foo t
fro mt hebra kepedal.
X Bri eflyp ullt he cru isec ontr ollever towards
yo u0085.
or X IfActiv eDistance AssistDISTR ONICisa cti-
va ted :accelera tebri efly.
Yo ur veh iclep ulls aw ay and adapts its spee d
to tha tofthe veh iclei nf ront. Ifno veh iclei s
de tecte dinf ront, your veh iclea ccelera tes
to the sets peed.
The vehiclec an also pullaw ay when itis facing
an unidentif iedo bstacle orisdri vin go nad if-
fer ent line froma nothe rvehicle. The vehicle
the nbrakes automa tically. Be rea dytobra ke
at allt im es.
If the reisno veh iclei nf ront, Activ eDistance
Assi stDISTR ONICoperates inthe same way
as cru isec ontro l.
If Activ eDistance AssistDISTR ONICdetects a
sl ow er-m oving veh iclei nf ront, itbra kes your
veh icle. In thi sw ay,the dista nce youh ave
se lected isma inta ined.
If Activ eDistance AssistDISTR ONICdetects a
fa ste r-mo vingv ehiclei nf ront, itincr easest he
dri vin gs peed. How ever,the vehiclei so nly
acc elera ted uptothe spee dy ou have stor ed. Dr
ivi ng system s
147Drivi ng andp arki ng Z

Selec
tingthedrive progra m
Act ive Distanc eAssist DISTRONIC supportsa
sporty driving stylewhen youhave selected
the Sor S+ drive program (Ypage 124).
Acc eleration behindthevehicle infront orto
the setspeed isthen noticeably more
dynamic. Ifyou have selected theCor Edriv-
ing program, thevehicle accelerates more
gently. Incity traffic andstop-st arttraffic,
drive program Cis recommen ded.
Changing lanes
If you want tochange tothe overtakin glane
on multi-lane roads,Active Distanc eAssist
DISTRONIC supportsyouif:
R you aredriving fasterthan45mph
(70 km/h)
R Act ive Distanc eAssist DISTRONIC ismain-
taining thedistance toav ehicle infront
R you switch onthe appropriate turnsignal
R Act ive Distanc eAssist DISTRONIC doesnot
current lydetect adanger ofcollision
If these condition sarefulfilled, yourvehicle is
accelerated. Acceleration willbeinterrupt edif
changing lanestakes toolong orifthe dis-
tance between yourvehicle andthevehicle in
front becomes toosmall.
i When
youchange lanes,Active Distanc e
Assist DISTRONIC monitorsthe left lane on
left-hand- drivevehicles orthe right laneon
right-han d-drivevehicles.
Stopping G
WARNING
If you leave thedriver's seatwhen thevehi-
cle isonly being braked byAct ive Distanc e
Assist DISTRONIC, itcould rollaway :
R ifthere isam alfunction inthe system or
in the voltage supply
R ifAct ive Distanc eAssist DISTRONIC is
deactivated usingthecruise controllever,
for example byavehicle occupant orfrom
outside thevehicle
R ifthe electrical systeminthe engine com-
partment ,the battery orthe fuses are
tampered with R
ifthe battery isdisconnec ted
R ifthe vehicle isaccelerated, e.g.byavehi-
cle occupant
There isar isk ofan accident.
Always deactivate Active Distanc eAssist
DISTRONIC andsecure thevehicle against
rolling awaybefore youleave it.
Further information ondeactivating Active Dis-
tance Assist DISTRONIC (Ypage 150).
If Act ive Distanc eAssist DISTRONIC detects
that thevehicle infront isstopping, itbrakes
your vehicle untilitis stationary.
Once yourvehicle isstationary, itremains sta-
tionary andyoudonot need todepress the
brake.
i Aft
eratime, theelectric parking brake
secures thevehicle andrelieves theservice
brake.
i Depending
onthe specified minimum dis-
tance, yourvehicle willcome toas tandst ill
at as ufficient distance behindthevehicle in
front .The specified minimum distanceisset
using thecont rolonthe cruise controllever.
When Active Distanc eAssist DISTRONIC is
activated, thetransm issionisshifted automati-
cally toposition 005Dif:
R the driver's seatbeltisnot fastened andthe
driver's doorisopen
R the engine isswitched off,unless itis auto-
matically switchedoffbythe ECO start/
stop funct ion.
The electric parking brakeisapplie dautomati-
cally ifAct ive Distanc eAssist DISTRONIC is
active whenthevehicle isstationary and:
R as ystem malfunction occurs
R the power supply isnot sufficient
If am alfunction occurs,thetransm issionmay
also shift toposition 005Dautomatically.
Setting aspeed Keep
inmind thatitmay take abrief moment
until thevehicle hasaccelerated orbraked to
the speed set.
X To
adj ust the setspeed in1m phincre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres- 148
Driving
systemsDriving andparking