2019 MERCEDES-BENZ SL ROADSTER sensor

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 andinamanner
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 conditionsof your 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 aregularly servicedvehiclewillcont 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 24
Genuine
Mercedes-Benz partsIntrodu ction

Befor
ecomme ncingyour jour ney,ensu rethat:
R there arenopeo ple, ani mal sor obje cts
betw eenthevehi cleoccu pants and anair-
ba g
R there arenoobje ctsbetw eentheseat,doo r
and B-pil lar
R there arenohar dobje cts,e.g. coathang ers,
hang ingonthe grabhand lesorcoa thoo ks
R no acce ssories,such ascup holder s,are
atta ched tothe vehi clewithin thedeploy-
ment areaof an airba g,e.g. todoo rsor sid e
wi ndow s
R no hea vy,sha rp-ed gedorfrag ile obje ctsare
in the pocke tsof your cloth ing.Store such
obje ctsinasui tabl eplace G
WARNI
NG
If yo umodi fythe cover ofan airba gor affi x
obje ctssuch assticke rsto it,the airba g
can nolong erper form itsintend edfuncti on.
The reisan incre asedrisk ofinju ry.
Neve rmodi fythe cover ofan airba gor affi x
obje ctstoit. G
WARNI
NG
Sensor sto control theairba gs are loca ted
in the doors.Mod ificati ons orwor knot per-
forme dcorre ctlytothe doorsor doo rpa nel-
ing, aswellas damag eddoo rs,can leadto
the functi onofthe senso rsbei ng imp aired .
The airba gs mig htthere forenotfuncti on
prop erlyany more .Co nseq uently ,the air
ba gs cannot protectvehi cleoccu pants as
they aredesigne dto do. Thereisan
incre asedrisk ofinju ry.
Neve rmodi fythe doorsor parts ofthe
doo rs.Alw ayshav ewor kon the doorsor
doo rpa neli ngcarri edoutat aqu alifi ed spe -
cia list wor kshop .
Fro ntair bag s !
Do
not place heavyobje ctsonthe front-
pa sse nger seat.Thi scou ldcau sethe sys-
tem toidentify theseatas bei ng occu pied.
In the eventofan acci dent, therestra int
sy stems onthe front-pa ssenger sidemay be
trigg eredand haveto be rep laced. Drive
r'sairba g0043 dep loysin front ofthe
stee ring wheel.Front-pa ssenger front air
ba g0044 dep loysin front ofand above theglove
box.
Whe ndep loyed, the front airba gs offe rad di-
tiona lhea dand thora xprote ction forthe occu -
pa nts inthe driver' sand front-pa ssenger
sea ts.
The PASSENGER AIRBAG OFFindicator lamp
infor msyouab ou tthe statu sof the front-
pa sse nger front airba g(Y page 41).
The front-pa ssenger front airba gwi llonly
dep loyif:
R the system, based onthe OCS weigh tsen-
sor readings, detectsthat thefront-
pa sse nger seatis occu pied (Ypage 48).
The PASSENGER AIRBAG OFFindicator
la mp isnot lit (Y page 48)
R the restra intsystem control unitpre dicts a
hig hacci dent severity
Kn ee bag s Drive
r'sknee bag0043 dep loysund erthe stee r-
ing colu mnand front-pa ssenger knee bag0044
und erthe glovebox. Thedriver' sand front-
pa sse nger knee bags are trigg eredtoge ther
wi th the front airba gs. 46
Oc
cupan tsafe tySafe ty

R
setting amore favorable seatposition for
the front -passenger seat.
R vehicles withamulticontour seat:increasing
the airpressure inthe side bolsters ofthe
seat backrest.
! Make
surethatthere arenoobjects inthe
footwell orbehind theseats. Thereisadan-
ger that theseats and/or objects couldbe
damaged whenPRE-SA FE®
is activated.
Should anaccident notoccur, thepreventative
measures takenarereversed. Certainsettings
must bemade yoursel f.
X Ifthe seat beltpre-tensionin gis not
reduced, movetheseat backrest back
slightly.
Seat beltpre-tensionin gis released . PRE-SAFE
®
PLUS (anticipatory occu-
pant protection systemPLUS)
Introduction PRE-SA
FE®
PLUS isonly available invehicles
with theDriving Assistance package.
Using theradar sensor system, PRE-SAFE®
PLUS isable todetect thatahead-on orrear-
end collision isimminent. Incertain hazardous
situations, PRE-SAFE®
PLUS takes pre-emptive
measures toprotect thevehicle occupants.
Importa ntsafety notes The
intervent ionofPRE-SA FE®
PLUS cannot
prevent animminent collision.
The driver isnot warned abouttheintervent ion
of PRE-SA FE®
PLUS.
PRE-SA FE®
PLUS doesnotintervene ifthe
vehicle isbacking up.
When driving, orwhen parking orexiting a
parking spaceusingActive Parking Assist,
PRE-SA FE®
PLUS willnotapply thebrakes.
Function PRE-SA
FE®
PLUS intervenes incertain situa-
tions ifthe radar sensor system detects an
imminent head-onorrear-end collision. PRE-SA
FE®
PLUS takes thefollowi ngmeas-
ures depending onthe hazardous situation
detected:
R ifthe radar sensor system detects thata
head-on collision isimminent, theseat belts
are pre-tensioned.
R ifthe radar sensor system detects thata
rear-end collisionisimminent:
- the brake pressure isincreased ifthe
driver appliesthe brakes whenthevehicle
is stationary.
- the seat belts arepre-tensioned.
The PRE-SA FE®
PLUS braking application is
canceled:
R ifthe accelerator pedalisdepressed whena
gear isengaged
R ifthe risk ofacollision passesorisno lon-
ger detected
R ifAct ive Distance AssistDISTRONIC indi-
cates anintent iontointervene
If the hazardous situationpasseswithout
resulting inan accident, theoriginal settings
are restored. Automatic
measuresafteranacci-
dent
Immediately afteranaccident, thefollowi ng
measures areimplemented, dependingonthe
type andseverity ofthe impact:
R the hazard warning lampsareswitched on
R the emergency lightingisactivated
R the vehicle doorsareunlocked
R the front sidewindows arelowered
R the electrically adjustablesteeringwheelis
raised whenthedriver's doorisopened
R the engine isswitched offand thefuel sup-
ply iscut off
R vehicles withMercedes meconn ect:auto-
matic emergency call 56
Occ
upant safetySafety

The
pulsating brakepedalcanbeanindication
of hazardous roadcondit ions,andfunct ionsas
a reminder totake extracare while driving. BAS
(BrakeAssist System)
General information BAS
operates inemergenc ybraking situations.
If you depress thebrake pedalquickly, BAS
automatically booststhebraking force,thus
shorten ingthe stopping distance.
Import antsafety notes i
Observe
the"Importan tsafety notes" sec-
tion (Ypage 60). G
WARNIN
G
If BAS ismalfunct ioning,thebraking dis-
tanc ein an emergenc ybraking situation is
increased. Thereisarisk ofan accident .
In an emergenc ybraking situation, depress
the brake pedalwithfullforce. ABSprevent s
the wheels fromlockin g.
Br aking X
Keep thebrake pedalfirmly depressed until
the emergenc ybraking situation isover.
ABS prevent sthe wheels fromlockin g.
The brakes willfunct ionasusual onceyou
release thebrake pedal. BASisdeactivated. Br
ake Assist withcross-tr afficfunc-
tion
General information Brake
Assist withcross- trafficfunct ioncan
help youtominimize therisk ofacollision with
a vehicle orapedestrian andreduce the
effect sof such acollision. IfBrake Assist with
cross- trafficfunct iondetect sa danger ofcolli-
sion, youareassisted whenbraking.
i Observe
the"Importan tsafety notes" sec-
tion (Ypage 60).
Brake Assist withcross- trafficfunct ionisonly
availabl ein vehicles withtheDrivin gAssis-
tanc epackage. For
Brake Assist withcross- trafficfunct ionto
assist youwhen driving, theradar sensor sys-
tem andthecamera systemmustbeopera-
tional.
The sensor system andcamera systemhelp
Brake Assist withcross- trafficfunct iondetect
obstacles:
R that areinthe path ofyour vehicle foran
exten dedperiod oftime
R that cross thepath ofyour vehicle
In addition, pedestrians inthe path ofyour
vehicle canbedetect ed.
Brake Assist withcross- trafficfunct iondetect s
pedestrians usingtypical charact eristics such
as body contours andtheposture ofaperson
standin gupright.
If the radar sensor system orthe camera sys-
tem ismalfunct ioning,BrakeAssist withcross-
traff icfunct ionisrestr icted orno longer availa-
ble. Thebrake system isstill availab lewith
complete brakeboosting effectandBAS.
i Observe
therestr iction sdescribed inthe
"Importan tsafety notes" section
(Y page 61).
Import antsafety notes G
WARNIN
G
Act ive Brake Assist withcross- trafficfunc-
tion cann otalway sclearly identify objects
and complex trafficsituations.
In such cases, Active Brake Assist with
cross- trafficfunct ionmight:
R issue anunneces sarywarning orbrake
R issue nowarning ornot brake
Always paycareful attentiontothe traff ic
situation; donot rely onthe Active Brake
Assist withcross- trafficfunct ionalone.
Always beready tobrake andpossibly take
evasive action. G
WARNIN
G
Brake Assist withcross- trafficfunct ioncan-
not alway sclearly identify people,particu-
larly ifthey aremoving. BrakeAssist with
cross- trafficfunct ioncann otinter vene in
these cases. Thereisarisk ofan accident . Driving
safetysystems
61Safety
Z

Up
toaspeed ofapproximately 44mph
(70 km/h), BrakeAssist withcross-t raffic
function mayreact to:
R stationary objectsinthe path ofyour vehi-
cle, e.g. stopped orparked vehicles
R pedestrians inthe path ofyour vehicle
R obstacles crossingyourpath which movein
the detection rangeofthe sensors andare
detected
i If
Brake Assist withcross-t rafficfunction
requires aparticularl yhigh braking force,
preventative passengerprotectionmeasures
(PRE-SAF E®
)are activated atthe same time
(Y page 55).
X Keep thebrake pedaldepressed untilthe
emergency brakingsituation isover.
ABS prevents thewheels fromlocking.
Brake Assist withcross-t rafficfunction is
deactivated andthebrakes function asusua l
agai nif:
R you release thebrake pedal
R there isno longer arisk ofcollision
R no obstacle isdetected infront ofyour vehi-
cle
R you depress theaccelerator pedal
R you activate kickdown Active
BrakeAssis t
General information i
Observe
the"Important safetynotes" sec-
tion (Ypage 60).
Act ive Brake Assist consists ofadistance
warning function withanautonomous braking
function andAdaptive BrakeAssist.
Act ive Brake Assist canhelp youtominimize
the risk ofacollision withthevehicle infront
or reduce theeffects ofsuch acollision.
If Act ive Brake Assist detects thatthere isa
risk ofcollision, youwillbewarned visually
and acousticall y.Ifyou donot react tothe vis-
ual collision warningorthe warning tone,
autonomous brakingcanbeinitiated incritical
situations. Ifyou apply thebrake yoursel fin a
critical situation, AdaptiveBrakeAssist ofthe
Act ive Brake Assist system supports you. Importa
ntsafety notes In
particular, thedetection ofobstacles canbe
impaired if:
R there isdirt onthe sensors oranything else
covering thesensors
R there issnow orheavy rain
R there isinterferenc eby other radarsources
R there arestrong radarreflections, forexam-
ple inparking garages
R anarrow vehicle istraveling infront ,e.g. a
motorbike
R avehicle istraveling infront onadifferent
line
R you aredriving anew vehicle orservicing on
the Active Brake Assist system hasjust
been carried out
Observe theimportant safetynotesinthe
"Breaking-in notes"section (Ypage 125).
Followi ngdamage tothe front endofthe vehi-
cle, have theconfiguration andoperation of
the radar sensor checked ataqual ified spe-
cialist workshop. Thisalso appli estocollisions
at slow speeds wherethereisno visible dam-
age tothe front ofthe vehicle.
Activating/ deactivating Act
ive Brake Assist isautomaticall yactive
after switching onthe ignition.
You canactivate ordeactivate Active Brake
Assist usingtheon-board computer
(Y page 198). When deactivated, thedistance
warning function andtheautonomous braking
function arealso deactivated.
If Act ive Brake Assist isdeactivated, the00D4
symbol appearsinthe assistance graphicdis-
play .
Distance warningfunction General
information
The distance warningfunction canhelp youto
minimize therisk ofafront -end collision witha
vehicle aheadorreduce theeffects ofsuch a
collision. Ifthe distance warningfunction
detects thatthere isarisk ofacollision, you
will bewarned visuallyand acousticall y. Driving
safetysystems
63Safety Z

int
erve neinthe secases .There isarisk of
an acc ident .
Always payparticular attent ion tothe traffic
situat ionand beprepar edtobrak e,espe-
cially ifAc tiveBrak eAss istwith cross-traffic
func tion alert syou.
In order tomaint ainthe appropr iatedistance
to the vehic lein fro ntand thus preventacolli-
sion ,you must apply thebrak esyourself . G
WARN
ING
Ac tiveBrak eAss istwith cross-traffic func-
tion does notreact :
R to small people, e.g.childr en
R to animals
R to onc omin gvehic les
R when corner ing
As aresult ,Ac tiveBrak eAss istwith cross-
tr affic function may notwarn youorengag e
in all crit ical situat ions.There isarisk ofan
acc ident .
Always paycaref ulatt ent ion tothe traffic
situat ionand beready tobrak e.
In the even tof sno wfall orheavy rain,therec-
ogn ition canbeimpaired .
Recogn itionbythe radar sensor syst emisalso
impaired if:
R the reisdirt onthe sensors oranyt hing else
cov erin gthe sensors
R the reisint erfe rencebyoth erradar sources
R the reare strong radar reflections ,for exam -
ple inpark inggarages
R anarr owvehic leistravelin gin fro nt,e.g. a
mot orbik e
R avehic leistravelin gin fro nton adiffe rent
line
Recogn itionbythe camer asyst emisalso
impaired inthe even tof:
R dirt onthe camer aor ifthe camer ais cov -
ered
R glare onthe camer asyst em, e.g.fromthe
sun being lowinthe sky R
dark ness
R or if:
- pedest riansmove quickly,e.g. intothe
path ofthe vehic le
- the camer asyst emnolong errec ogn izes a
pedest rianasaperso ndue tospec ial
clot hing oroth erobje cts
- apedest rianiscon cealed byoth er
obje cts
- the typic aloutlin eof apedest rianisnot
dist inguish ablefromthe back groun d
Followin gdamage tothe frontend ofthe vehi-
cle, have theconfigurat ionand operat ionof
the radar sensors checkedataqualified spe-
cialist workshop. Thisalso applies tocollis ions
at slow speeds wherethereisno visible dam-
age tothe frontofthe vehic le.
Followin gdamage tothe windsh ield,have the
con figurat ionand operat ionofthe camer asys-
tem chec kedataqualified specialist work-
shop.
Function X
To acti vateor deact ivate:act ivat eor
deact ivateAc tiveBrak eAss istwith cross-
tr affic function using theon-board computer
(Y page 198).
When ActiveBrak eAss istwith cross-traffic
func tion isdeact ivated, the 00D4 symbol
appears inthe assist ancegraphic displayof
the multif unction display.
St artin gat aspeed ofaround 4mph (7km /h),
this func tion warns youifyou rapidly approac h
a vehic lein fro nt.An intermit tentwarnin gton e
will thensound andthe00BA distancewarnin g
lamp willlight upinthe instrumen tclust er.
X Brak eimmed iatelytodefuse thesituat ion.
or
X Take evasiv eact ion prov ided itis safe todo
so.
Ac tiveBrak eAss istwith cross-traffic function
can also brakethe vehic leautom atically under
the followin gcon dition s:
R the drive rand frontpassen gerhave their
seat belts fastened
and
R the vehic lespeed isbetwee napprox imately
4 mph (7km /h) and 124 mph (200 km/h) Driving
safety syst ems
71Safety Z

Locking/u
nlockingcentr ally You
canstart ,loc kor unlo cktheveh icle usin g
KE YLE SS-GO .To do this, you onlynee dcar ry
th eSm artKey with you.Youcancom bine the
fun ction sof KE YLE SS-GO with those ofacon -
ven tional SmartKey. Unloc kth eveh icle by
usin gKE YLE SS-GO ,for instan ce, and lockit
usin gth e0037 buttonontheSm artKey.
The driver'sdoor andthedoor atwhic hth e
han dleisused, mustbothbe closed. The
Sm artKey must beouts idetheveh icle.When
loc kin gor unlo cking with KEYLE SS-GO ,th e
dist ancebet ween thekey and thecor respon d-
ing door handlemust notbegreat erthan 3ft
(1 m).
A che ckwhic hperio dicall yest ablishe sa radio
con nectionbet ween theveh icle and the
Sm artKey determ ineswhet heravalid Smart-
Key isin theveh icle.This occurs, forexam ple:
R when start ing theeng ine
R while driving
R when usingHA ND S-FRE EACCE SS
R when theext ern aldoor handles aretouche d X
To unlock thevehicl e:touch theinn ersur-
fac eof thedoor handle.
X To lock thevehicl e:touch sensor sur-
fac e0043 or0044.
Mak esure that you donot touch theinn er
surf ace ofthedoor handle.
X Convenien ceclosing feature: touch
rec esse dsen sor surf ace 0044for anext end ed
perio d.
Fur ther inform ationon thecon venience
clo singfeat ure (Ypage 89). Deact
ivatingand activat ing If
you donot intend touse aSm artKey foran
ext end edperio dof tim e,you can deac tivate
th eKE YLE SS-GO function ofthekey. The
Sm artKey willthen use verylitt lepower ,
th ereb ycon servingbatt erypower .For thepur-
poses ofact ivat ion/de activat ion,th eveh icle
must notbenear by.
X To dea ctiv ate: pres sth e0037 buttonon
th eSm artKey twicein rapid successio n.
The batterychecklamp (Ypage 77)of the
Sm artKey flash estwic ebrief lyand light sup
onc e,then KEYLE SS-GO isdeac tivated .
X To act ivat e:pres sany buttonontheSm art-
Key.
or X Inser tth eSm artKey intoth eign itio nloc k.
KE YLE SS-GO andallofits assoc iatedfea-
tur es are available again. Cha
nging thesett ings ofthelocking
syst em
You canchan getheset tings oftheloc kin g
syst em. This mean sonl yth edriv er'sdoor ,th e
lock able stowage compartmen tsintheveh icle
int erio rand thefuel filler flapareunlo cked
when theveh icle isunlo cked. This isusef ulif
you frequen tlytravel alone.
X To cha nge thesett ing: pressand hold
down the0036 and0037 buttons simult ane-
ously forabout sixsec ond sunt ilth ebatt ery
indi catorlamp (Ypage 77)flash estwic e.
If th eset tingof theloc kin gsyst emischan ged
with inthesign alran geoftheveh icle,pres sing
th e0037 or0036 button:
R lock sor
R unlo cksth eveh icle
The SmartKey now function sas follo ws:
X To unlock :pres sth e0036 buttononc e.
X To unlock centrally:pres sth e0036 button
twic e.
X To lock centr ally:pres sth e0037 button. Sm
artKey
75Openingand closing Z

The
KEYLE SS-GO funct ionischanged asfol-
lows:
X To unlock thedriver 'sdoor: touch the
inner surface ofthe door handle onthe driv-
er's door.
X To unlock centrally: touchtheinner sur-
face ofthe driver orfront -passenger door
handle.
X To lock centrally: touchtheouter sensor
surface onone ofthe door handles.
X To restor ethe factory settings: pressand
hold down the0036 and0037 button s
simultaneously forapproximately sixsec-
onds untilthebattery checklamp
(Y page 77)flashes twice. Mechanical
key
General notes If
the vehicle cannolonger belocked or
unlocked withtheSmart Keyorwith KEYLE SS-
GO, usethemechanic alkey.
If you usethemechanic alkey tounlock and
open thedriver's doororthe trunk lid,the
anti- theft alarm system willbetriggered.
Switch offthe alarm (Ypage 72).
Removing themechanical key X
Push release catch0043 inthe direction ofthe
arrow andatthe same timeremove
mechanic alkey 0044from theSmart Key.
For further informationabout:
R unlockin gthe driver's door(Ypage 81)
R unlockin gthe trunk (Ypage 86)
R lockin gthe vehicle (Ypage 81) Inserting
themechanical key X
Push mechanic alkey 0044completely intothe
Smart Keyuntil itengages andrelease
catc h0043 isback inits basic position. Smar
tKeybattery
Import antsafety notes G
WARNIN
G
Batt eries containtoxicand corrosiv esub-
stanc es.Ifbatteries areswallowe d,itcan
result insevere healthproblems. Thereisa
risk offatal injury.
Keep batteries outofthe reach ofchildren.
If abattery isswallowe d,seek medical
atten tionimmediately. H
Environmental
note Batt
eries containpollutants.
It is illegal todispose of
them withthehousehold
rubbish. Theymust becol-
lected separately anddis-
posed ofinan environ men-
tally responsible recycling
system. Dispose
ofbatteries inan
environ mentallyresponsible
manner .Take discharged
batteries toaqualified spe-
cialist workshop ortoacol-
lection pointforused bat-
teries.
The Smart Keybatteries containperchlorate
material, whichmayrequire specialhandling
and regard forthe environ ment.National
guidelines mustbeobserved duringdisposal.
In California, seewww .dtsc.ca.gov/
Haza rdousW aste/Perchlora te/index.cfm.
Mercedes- Benzrecomm endsthatyouhave
the batteries replacedataqualified specialist
workshop. 76
Sma
rtKeyOpening andclosing