2020 MERCEDES-BENZ SLC brake sensor

Important
safetynotes.................. 258
Jump starting .................................2 61
Overvi ew....... ................................. 258
Rep lacing .......................................261
Belt
see Seat belts
Belt warni ng....... .................................. 42
Blin dSpot Assist
Activating/d eactivating .................176
Displ aymessa ge....... ..................... 199
Notes/fu nction..............................164
Blueto oth®
Searchi ngfor am obilephone ........222
Searchi ngfor am obilephone
(de vice mana ger)........................... 223
see also Digita lOpera tor's Man-
ua l....... ....... ....... .............................218
Tel epho ny....... ....... ........................222
Brake AssistSyste m
see BAS (Brake AssistSystem)
Brake fluid
Displ aymessa ge....... ..................... 189
Notes .............. ...............................302
Brake forcedistributi on
see EBD (electronic brakeforce
dis tribu tion)
Brake lamps
Adap tive....... ....................................60
Dis play mes sage ............ ................194
Brake s
ABS ............ ........................ ..............57
Ada ptive Bra keAssi st............ .......... 59
BAS ............ ............ ..........................57
Bra kefluid(no tes)............ ............ .302
Displ aymessa ge....... ..................... 184
EBD .............. ....................................63
High -perfo rmance brakesystem ....141
Impo rtant safety notes ............ ......139
Mai ntenance .................................. 140
Pa rking brake............ ....................135
Ri ding tips............ ............ ..............139
Wa rning lamp ............ .....................211
Breakdo wnassi stanc e
Re flective safety jacket ............ ......252
Whe rewillIf ind...? ............ ............ 252
see Flattire
see Towingaway Brightn
esscontrol (instrumen t
cl uster lightin g)........... ........................32
Bulbs
see Repla cing bulbs C
Cal ifornia
Impo rtant notice forreta ilcus-
tomers andlessee s........... ........... ....24
Cal ling up am alfun ction
see Disp laym essages
Car
see Vehi cle
Care
Carw ash. .......... ........... ..................247
Exhau stpip e........... ........... ............251
Exterior lights ....... ......................... 250
Matte finish................................... 249
Notes .............................................246
Pai nt....... ....................................... 248
Pow erwa sher ................................248
Rea rview camera .......................... 251
Sensors ......................................... 251
Was hing byhand ........................... 247
Whee ls....... ....................................250
Windo ws....... ................................. 250
Wip erbla des ....... ........................... 250
CD
see also Digita lOpera tor's Man-
ua l....... ....... ....................................218
CD player (on-bo ardcomputer) ........174
Ce nter conso le
Lowe rsection .................................. 35
Uppe rsection .................................. 34
Ce ntral locking
Automa ticlocking (on-board
compu ter)....... ...............................179
Locking/u nlocking(SmartKe y)....... .66
Cha nging bulbs
Sid em arkerlamps (rear)...... ......... 103
Child
Rest raintsyst em .............................. 55
Child seat
For ward- facing restraint system...... 56
On thef ront-pa sse nger seat ............ 56
Rearwar d-facin grestraint system.... 56 6
Index

Protecting
theenvironment General
notes H
Environmental
note
Daimler's declaredpolicyisone ofcompre-
hensive environm entalprotect ion.
The object ivesareforthe natural resources
that form thebasis ofour existen ceon this
planet tobe used sparingly andinam anner
that takes therequirements ofboth nature
and humanity intoaccount.
You toocan help toprotect theenvironm ent
by operating yourvehicle inan environm en-
tally responsible manner.
Fuel consumpt ionand therate ofengine,
transm ission,brakeandtirewear areaffec-
ted bythese factors:
R operating conditionsofyour vehicle
R your personal drivingstyle
You caninfluence bothfactors. Youshould
bear thefollowing inmind:
Operating conditions:
R avoid shorttripsasthese increase fuel
consumpt ion.
R alwa ysmake surethatthetire pressures
are correct .
R do not carry anyunnecessary weight.
R remove roofracks onceyounolonger
need them.
R ar egularly serviced vehiclewillcont ribute
to environm entalprotect ion.You should
therefore adheretothe service intervals.
R alwa yshave service workcarried outata
quali fiedspecialist workshop.
Personal drivingstyle:
R do not depress theaccelerator pedal
when startin gthe engine.
R do not warm upthe engine whenthevehi-
cle isstationary.
R drive carefully andmaintain asafe dis-
tance fromthevehicle infront .
R avoid frequent, suddenacceleration and
braking. R
change gearingood timeanduseeach
gear onlyupto00C3 ofits maximum engine
speed.
R switch offthe engine instationary traffic.
R keep aneye onthe vehicle's fuelcon-
sumption. Environmental
concerns andrecom-
mendat ions
Wherever theoperating instructionsrequire
you todispose ofmaterials, firsttrytoregen-
erate orre-use them.Observe therelevant
environm entalrulesandregulations whendis-
posing ofmaterials. Inthis way youwillhelp to
protect theenvironm ent. Genuine
Mercedes-Benz parts H
Environmental
note
Daimler AGalso supplie srecondit ioned
major assemblies andparts which areofthe
same qualityas new parts. Theyarecovered
by the same Limited Warranty entitlements
as new parts.
! Air
bags andEmergen cyTensioning Devi-
ces, aswell ascont rolunits andsensors for
these restraint systems, maybeinstalled in
the following areasofyour vehicle:
R doors
R door pillars
R door sills
R seats
R cock pit
R instrumen tcluster
R cent erconsole
Do not install accessories suchasaudio sys-
tems inthese areas. Donot carry out
repairs orwelding. Youcould impair the
operating efficiency ofthe restraint sys-
tems.
Have aftermark etaccessories installedata
quali fiedspecialist workshop.
You could jeopardize theoperating safetyof
your vehicle ifyou useparts, tiresandwheels
as well asaccessories relevanttosafety which Genuine
Mercedes-Benz parts
23Introdu ction Z

G
WARNING
If BAS ismalfu nctioning, thebraki ngdis-
tance inan emerge ncybraki ngsitua tionis
increas ed.There isar isk ofan accide nt.
In an emerge ncybraki ngsitua tion, depre ss
the brake pedalwith full force. ABSprevents
the whee lsfrom locking.
Braking X
Keep thebrake pedalfirmly depre sseduntil
the emerge ncybraki ngsitua tionisover.
ABS prevents thewhee lsfrom locking.
The brakes willfunction asusu alonce you
rele ase thebrake pedal.BAS isdea ctivated. Ac
tive Brake Assist
Gene ralinfo rmation i
Observe
the"Impo rtantsafety notes" sec-
tion (Ypag e57).
Active BrakeAssist consists ofad ista nce
war ning function withanautonomous braking
function andAdapti veBrake Assist.
Active BrakeAssist canhelp youtominimi ze
the risk ofac ollision with thevehicl einf ront
or redu cethe effects ofsuch acollision.
If Active BrakeAssist detects thatthere isa
risk ofcolli sion, youwillbew arned visually
and acou stical ly.I fy ou do not react tothe vis-
ua lcolli sion warning orthe warning tone,
au tonomous brakingcan beinitia tedincritical
situa tions. Ifyou applythe brake yourself ina
critical situation, Adapti veBrake Assist ofthe
Active BrakeAssist system supports you.
Important safetynotes In
particu lar,the detection ofobstacl escan be
impa iredif:
R there isdirt onthe sensors oranythi ngelse
covering thesensors
R there issnow orhea vyrain
R there isinterference byother radarsource s
R there arestrong radarreflectio ns,forexam-
ple inparki nggara ges
R an arrow vehicleist raveli nginfront, e.g.a
motorbike R
av ehicl eist raveli nginfront onadiffer ent
line
R you aredrivi nganew vehicl eorservici ngon
the Active BrakeAssist system hasjust
been carrie dout
Observe theimporta ntsafety notesinthe
"Brea king-in notes"section (Ypag e117).
Follo wing dama getothe front endofthe vehi-
cle, have theconfigu rationandopera tionof
the rada rsensor checked ataq ualified spe-
cial istworksho p.This alsoa ppliest oc ollisions
at slow speedswhere thereisno visib ledam-
age tothe front ofthe vehicl e.
Ac tivating /deactivating Active
BrakeAssist isau tomatical lyactive
after switching onthe ignitio n.
You canactiva teor dea ctivate ActiveBrake
Assist using the on-board computer
(Y pag e176) .When deactivated, thedista nce
war ning function andtheautonomous braking
function arealsod eactivated.
If Active BrakeAssist isdea ctivated, the00D4
symb olapp ears inthe assi stance graphicdis-
pla y.
Di stance warningfunctio n Gene
ralinfo rmation
The dista ncewarni ngfunction canhelp youto
minimi zethe risk ofafront-end collision with a
vehicl eahea dorredu cethe effects ofsuch a
colli sion. Ifthe dista ncewarni ngfunction
detects thatthere isar isk ofac ollision, you
wil lbew arne dvisuallya nd acou stical ly.
Important safetynotes
i Observe
the"Impo rtantsafety notes" sec-
tion fordrivi ngsafety systems (Ypag e57). G
WARNING
The dista ncewarni ngfunction doesnot
react:
R to peop leor anima ls
R to oncoming vehicles
R to crossing traffic
R when cornering 58
Drivi
ngsafety systemsSafety

The
distance warningfunctionmay notgive
warnings inall critic alsituations. Thereisa
risk ofan accident .
Always paycareful attentiontothe traff ic
situation andbeready tobrake.
Always adaptyourspeed tosuit theprevail-
ing road andtrafficcondit ions. G
WARNIN
G
The distance warningfunctioncann ot
alway sclearly identify objectsand complex
traff icsituations.
In such cases, thedistance warningfunction
may:
R give anunnec essary warning
R not give awarning
There isar isk ofan accident .
Always paycareful attentiontothe traff ic
situation anddonot rely solely onthe dis-
tanc ewarning function.
Function Start ingatas peed ofapproximately 4mph
(7 km/ h),the distance warningfunctionwarns
you ifyou rapidly approach avehicle infront .
An inter mittentwarning tonew illthen sound,
and the00BA distance warninglampwilllight
up inthe instr ument cluster.
X Brake immediately inorder toincrease the
distance fromthevehicle infront .
or X Take evasive action,provided itis safe todo
so.
Due tothe nature ofthe system, particularly
complicated butnon- critic aldriving conditions
may alsocause thesystem todisplay awarn-
ing.
With thehelp ofthe radar sensor system, the
distance warningfunctioncan detect obsta-
cles thatareinthe path ofyour vehicle foran
exten dedperiod oftime.
Up toas peed ofapproximately 44mph
(70 km/ h),the distance warningfunctioncan
also react tostation aryobstacles, suchas
stopped orparked vehicles. Autonomous
brakingfunction If
the driver doesnotreact tothe distance
warning signalinac ritic alsituation, Active
Brake Assist canassist withtheautonomous
braking function.
If the autonomous brakingfunctionrequires a
particularly highbraking force,prevent ative
passenger protectionmeasures (PRE-SAFE®
)
are activated simultaneously.
Vehicles withoutActiveDistance Assist
DISTRONIC: theautonomous brakingfunction
is availab lein the following speedranges:
R 4-6 5mph(7-105 km/ h)for moving
objects
R 4-3 1mph(7-50k m/h )for stationa ry
objects
Vehic leswith Active Distance Assist
DI STRONIC: theautonomous brakingfunction
is ava ilable inthe followi ngspee dranges :
R 4-1 24mph (7-200 km/h )for moving
objects
R 4-3 1mph(7-50k m/h )for stationa ry
objects
Due tothe nature ofthe system ,parti cula rly
compli catedbutnon-critical drivingconditio ns
may alsoc aus ethe autonomous brakingfunc-
tion tointervene.
If the autonomous brakingfunction requiresa
parti cularlyhigh braki ngforce, preventa tive
pas senger protection measures(PRE-SAFE ®
)
are activa tedsimu ltaneo usly(Ypag e53).
Adaptive BrakeAssist Gene
ralinfo rmation
i Observ
ethe "Imp ortant safetynotes" sec-
tion (Ypag e57).
With thehelp ofAdapti veBrake Assist, thedis-
tance warning signalcan detect obstaclesthat
are inthe path ofyou rvehicl efor an extended
peri odoftime.
If Adapti veBrake Assist detects arisk ofcolli -
sion with thevehicl einf ront, itcalcu latesthe
braki ngforce necessa ryto avoi dac ollision. If
you applythe brakes forcefully,A dapti ve
Brake Assist willautomatica llyincreas ethe
braki ngforce toaleve lsuitabl efor the traffic
conditio ns.
Adapti veBrake Assist providesbraki ngassi s-
tance inhaza rdoussitua tions atspee dsabo ve Driv
ingsafety systems
59Safety Z

4m
ph(7km/h) .Itu sesr ada rsensor technol-
ogy toasse ssthe traffic situation.
Up toas pee dofapp roxima tely155 mph
(250 km/h) ,Adap tive Brake Assist iscapa ble
of reacti ngtomoving objects thathave
al read ybeend etected assuch atlea stonce
over theperiodofobse rvatio n.
Up toas pee dofapp roxima tely44mph
(70 km/h) ,Adap tive Brake Assist reacts to
stationa ryobsta cles.
If Adap tiveBrake Assist demandsparti cularly
high braki ngforce, preventative passenger
protectio nmeasures (PRE-SAFE ®
)a re activa -
ted simu ltaneo usly(Ypag e53).
X Keep thebrake pedaldep resse duntil the
emerg encybrakingsitua tionisover.
ABS preve ntsthe whe elsfrom locking.
The brake swillw ork normal lyaga inif:
R you release thebrake pedal
R there isno longe rany dange rofac ollision
R no obsta cleisdetected infront ofyou rvehi -
cle
Adap tiveBrake Assist isthen deactivated .
Important safetynotes G
WARNING
Adap tiveBrake Assist cannot alwa ysclea rly
ide ntify objects andcompl extraffic situa-
tions.
In such cases ,Adap tive Brake Assist can:
R intervene unnecessarily
R not intervene
There isar isk ofan accid ent.
Alwa yspay carefu lattention tothe traffic
situa tionandberead ytob rake .Termi nate
the interventio nina non-critical drivingsit-
ua tion. G
WARNING
Adap tiveBrake Assist doesnotreact:
R to peop leor anima ls
R to oncoming vehicles
R to crossi ngtraffic
R whe ncornering As
aresu lt,the Adap tiveBrake Assist may
not intervene inallc ritica lconditio ns.There
is ar isk ofan accid ent.
Alwa yspay carefu lattention tothe traffic
situa tionandberead ytob rake .
Alwa ysada ptyou rspee dtos uitt he preva il-
ing road andtraffic conditio ns.
Due tothe nature ofthe system, particularly
compl icated butnon-critical drivingconditio ns
may also cau seAdap tiveBrake Assist tointer-
vene.
If Adap tiveBrake Assist isnot available due to
am alfunction inthe rada rsensor system, the
brake system remai nsava ilable with fullbrake
boos tingeffect andBAS. Adaptive
brakelights
i Obse
rvethe "Imp ortant safetynotes" sec-
tion (Ypag e57).
If you brake sharplyfrom aspee dofm ore than
50 km/h orifbraki ngisassi sted byBAS or
Brake Assist withCross-Traffi cAssist, the
brake lamps flash rapi dly.Int his way,traffic
travel ingbehi ndyou iswa rned inan even
more noticea blemanner.
If you brake sharplyfrom aspee dofm ore than
70 km/h toas tandsti ll,the haza rdwa rning
la mps areactiva tedautomatica lly.Ift he
brake sareapp lieda gain, the brake lamps light
up continuou sly.The haza rdwa rning lamps
swi tch offautomatica llyifyou travel faster
than 10km/h. Youcanalso swi tch offthe
haza rdwa rning lamps using the haza rdwa rn-
ing button (Ypag e99). ESP
®
(E lec tronic StabilityProgram)
Gene ralnote s i
Obse
rvethe "Imp ortant safetynotes" sec-
tion (Ypag e57).
ESP ®
monitors drivingstabi lityand traction,
i.e. pow ertransmis sionbetwe enthe tires and
the road surface.
If ESP ®
detects thatthevehi cleisdevi ating
from thedirection desiredbythe drive r,one or
more wheelsare brake dtos tabi lize thevehi -
cle. The engine outputisa lsom odified tokeep 60
Driv
ingsafety systemsSafety

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

Parking
AssistPARKTRONIC
Import antsafety notes Parking
AssistPARKTRONIC isan electron ic
parking aidwith ultrasound. Itmonitor sthe
area around yourvehicle usingsixsensors in
the front bumper andfour sensors inthe rear
bumper. ParkingAssistPARKTRONIC visually
and audib lyindicates thedistance between
your vehicle andanobject .
Parking AssistPARKTRONIC isonly anaid. Itis
not areplacement foryour atten tiontoyour
immediate surroundings. Youarealwa ys
responsible forsafe maneuvering, parkingand
exiting aparking space. Makesurethatthere
are nopersons, animalsorobject sint he
maneuvering areawhen youaremaneuvering
or parking.
! When
parking, payparticular attentionto
object sabove orbelow thesensors, suchas
flower potsortrailer drawbars.
PARKTRONIC doesnotdetect suchobject s
when theyareinthe immediate vicinityof
the vehicle. Youcould damage thevehicle
or the object s.
The sensors maynotdetect snowandother
object sthat absorb ultrasonic waves.
Ultrasonic sourcessuchasan automatic car
wash, thecompressed-air brakesonatruck
or ap neumatic drillcould cause
PARKTRONIC tomalfunction .
PARKTRONIC maynotfunct ioncorrect lyon
uneven terrain.
Parking AssistPARKTRONIC isactivated auto-
matically whenyou:
R switch onthe ignition
R shift thetransm issiontoposition 005B,005Eor
005C
R release theelectric parking brake
Parking AssistPARKTRONIC isdeactivated at
speeds above11mph (18km/h). Itis reacti-
vated atlower speeds. Range
ofthe sensors General
notes
Parking AssistPARKTRONIC doesnottake into
account obstacles located:
R below thedetect ionrange, suchaspersons,
animals orobject s
R above thedetect ionrange, e.g.overhanging
loads, tailsection sorloading rampsof
truck s 0043
Sensors inthe front bumper, left-hand side
(example)
The sensors mustbefree from dirt,iceor
slush. Theycanotherwise notfunct ioncor-
rectly. Cleanthesensors regularly ,taking care
not toscratc hordamage them(Ypage 251).
Range 154
Driving
systemsDriving andparking

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions The
yellow 0024warninglamp lightsup and ther ed 0049 (USA
on ly) or0024 (Canadaonly) ind icat orlamp flashes .
It is no tp ossibl etoa pply thee lectric park ingbrak emanually.
X Sh ift thet rans mis sion topos ition 005D.
X Vis itaq ualif iedspecialistwor kshop . 0027
(USAonly)
004D (Canadaonly)
Che ckBrakeFluid Che
ckBrakeFluid
Lev el Lev
el The
reisno te nough brak efluidi nt he brak efluid reservoir.
In addit ion,the 0027 (USAonly) or 004D (Canadaonly) warn ing
lamp lightsup inthei nstrumen tclus tera nd aw arning tone soun ds.
G WAR
NING
The brak ingeffectm aybe imp aire d.
The reisar isko fana cciden t.
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.Do notc ontin ue drivin g
und erany circum stanc es.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Con sult aqualif iedspecialistwor kshop .
X Do nota dd brak efluid .This does notc orrect them alfunc tion . 0026
Che ckBrakePad Che
ckBrakePad
Wea r Wea
r The
brak epads /linin gshav ereac hed their wear limit.
X Vis itaq ualif iedspecialistwor kshop . PRE
-SAFEInoper a‐ PRE
-SAFEInoper a‐
tiv eS eeOpe ra‐ tiv
eS eeOpe ra‐
tor 'sManual tor
'sManual Im
por tantfun ction sofPRE -SAF E®
hav efailed. Allo ther occup ant
saf etys yst ems ,e.g.a irbags ,rem ain avail able.
X Vis itaq ualif iedspecialistwor kshop immediat ely. Act
ive Brake Act
ive Brake
Ass ist Functions Ass
ist Functions
Cur rently Limite d Cur
rently Limite d
See Operator'sM an‐ See
Operator'sM an‐
ual ual Ac
tive Brake Assis tist em porar ily ino per ative.
Pos siblecaus esare:
R ther adar sensor syst emistempo rarily ino per ative, e.g. due to
elec tromag neticr adi ation emi tted bynearby TVorradi ostation s
or other sour ceso felec tromag neticr adi ation
R thes yst em isout side theo per ating tempe rature range
R theo n-bo ardv oltag eist oo low
Whe nthe caus esstate dabov enolon ger apply, thed isplay mes sage
disap pears.
Ac tive Brake Assis tiso per ationalagain .
If th ed isplay mes sage does notd isap pear :
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Rest artthee ngine. Disp
laymes sage s
189On -boar dcomp uter andd ispla ys Z