2019 MERCEDES-BENZ SL ROADSTER keyless

G
WARNING
If you switch offthe ignitio nwhi ledrivi ng,
safety -releva ntfunctions areonly available
with limitations, ornot atall.This could
affect, forexampl e,the pow ersteering and
the brake boostingeffect. Youwillrequ ire
conside rablymore effort tosteer andbrake.
There isarisk ofan accide nt.
Do not switch offthe ignitio nwhi ledrivi ng. G
WARNING
If the parki ngbrake hasnotbeen fully
rele ased when driving,the parki ngbrake
can:
R overhe atand caus eafire
R lose itshold function.
There isarisk offire and anaccide nt.
Rel ease theparki ngbrake fullybefore driv-
ing off.
! Do
not warmup the engine whilestation-
ary .Pul lawa yimmed iately.Avoid high
engine speedsand fullthrottle untilthe
engine hasreache dits opera tingtempera -
ture.
In vehicl eswith automatic transmissi on,
engag eposi tions Pand Ronly when the
vehicl eis stationa ry.
Where possible,avoi dspinning thedrive
whee lswhen pulling awayon slip pery roads.
You couldotherwi sedama gethe drive train.
! Merce
des-AMGvehi cles:at low engine
oil tempera turesbelow 68‡(+20 †),the
maximu mengine speedis restricted in
order toprotect theengine. Toprotect the
engine andmaintai nsmooth engineopera-
tion, avoiddrivi ngatfull throttle whenthe
engine iscold. Ke
ypositi ons
SmartKey 005A
Toremove theSmartKey
0047 Powe rsup plyforsome consumers ,such
as the winds hieldwip ers
0048 Ignition (powersup plyforallconsumers )
and drive position
0049 Tostart theengine
i The
SmartKey canbeturned inthe ignitio n
lock even ifit is not thecorrect SmartKey
for the vehicl e.The ignitio nis not switched
on. The engine cannot bestarted.
KE YLESS-GO Gene
ralnotes
Vehi cles with KEYLESS-GO areequipped with
a SmartKey featuringanintegrated KEYLESS-
GO start function andadetacha bleStart/Stop
button.
The Start/Stop buttonmustbeinserted inthe
ignitio nlock andtheSmartKey mustbeinthe
vehicl e.
When youinsert theStart/Stop buttoninto
the ignitio nlock, thesystem needsapprox-
imatel ytwo seconds recognitio ntime. Youcan
then usetheStart/Stop button.
Pressi ngthe Start/Stop buttonseveraltimes
in successi oncorrespo ndstothe differ entkey
posi tions inthe ignitio nlock. Thisisonly the
case ifyou arenot depre ssing thebrake pedal.
If you depre ssthe brake pedaland press the
Start/Stop button,theengine startsimmed i-
ately .
A check whichperi odica llyestabl ishesa radi o
connection betweenthe vehicl eand the
SmartKey determineswhethe ra vali dSmart- 126
Drivi
ngDrivi ngand parking

Key
isin the vehicle .This occurs, forexampl e,
when starting theengine.
To start thevehicle withoutactively usingthe
SmartKey:
R the Start/St opbutton mustbeinserted in
the ignition lock.
R the SmartKey mustbeinthe vehicle .
R the vehicle mustnotbelocked withthe
SmartKey orKEYLESS- GO(Ypage 74).
Do not keep theSmartKey:
R with electronic devices,e.g.amobil ephone
or another SmartKey.
R with metall icobjects, e.g.coins ormetal
foil.
R inside metallicobjects, e.g.ametal case.
This canimpa irthe functionali tyof the KEY-
LESS- GOkey.
If you lock thevehicle withtheSmartKey's
remote controlorwith KEYLESS- GO,after a
short time:
R you willnot beableto switch onthe ignition
with theStart/St opbutton.
R you willnot beableto start theengine with
the Start/St opbutton untilthevehicle is
unlocked again.
The engine canbeswitched offwhil ethe vehi-
cle isin motion bypressi ngand holdi ngthe
Start/St opbutton forthree seconds. This
function operatesindepe ndently ofthe ECO
start/stop automaticengine switch-off func-
tion.
Key positio nswith KEYLESS-GO 0043
Start/St opbutton
0044 Ignition lock
As soon asthe ignition isswitched on,allthe
indicator lampsin the instrument clusterlight
up. Further information onsitua tions where an
indicator lampeither failsto go out after start- ing
the engine orligh tsup whil edriving
(Y page 235).
If Start/St opbutton 0043has notyetbeen
pressed ,this corresponds tothe key being
removed fromtheignition.
X To swi tch onthe powe rsupply: press
Start/St opbutton 0043once.
The powe rsupp lyisswitched on.You can
now activate thewindsh ieldwipers, for
exampl e.
The powe rsupp lyisswitched offaga inif:
R the driver's doorisopened and
R you press Start/St opbutton 0043twice
when inthis positio n
X To swi tch onthe ignition: press Start/
Stop button 0043twice.
The ignition isswitched on.
If you press Start/St opbutton 0043once
when inthis positio n,the ignition is
switched offaga in.
Removing theStart/Stop button
You canremove theStart/St opbutton from
the ignition lockandstart thevehicle asnor-
mal using theSmartKey.
X Remove Start/Stopbutton 0043from ignition
lock 0044.
You donot have toremove theStart/St opbut-
ton from theignition lockwhen youleavethe
vehicle .You shoul d,howeve r,alw aystake the
SmartKey withyouwhen leaving thevehicle .
As long asthe SmartKey isin the vehicle :
R the vehicle canbestarted usingtheStart/
Stop button
R the electrical lypowe redequi pment canbe
opera ted Starting
theengi ne
Important safetynotes G
WARNING
If childre nare left unsup ervised inthe vehi-
cle, they could :
R opera tethe vehicle 'sequi pment Drivi
ng
127Drivi ngand parking
Z

With
theSmartKey: ifyou then open thedriv-
er's door orthe front-passenge rdoor or
remove theSmartKey fromtheignitio n,the
au tomatic transmissi onshifts to005D automati-
call y.
With KEYLESS-GO :if you then open thedriv-
er's orfront-passenge rdoor, theautomatic
transmissi onshifts to005D automatical ly.
If you want theautomatic transmissi onto
remai nin neutral 005C,e.g. when havingthe
vehicl eclea ned inan automatic carwas hwith
a towing system:
X Vehic leswith KEYLESS-GO :remove the
Start/Stop buttonfromtheignitio nlock.
X Insert theSmartKey intotheignitio nlock.
X All vehi cles:swi tch the ignitio non.
X Depress thebrake pedaland keep it
depre ssed.
X Shift toneutral 005C.
X Rel ease thebrake pedal.
X Rel ease theelectric parkingbrake.
X Switch offthe ignitio nand leavethe Smart-
Key inthe ignitio nlock.
Eng agin gdrive position D X
When thevehicl eis stationa ry,depre ssthe
brake pedal.
X Push thesele ctor leverback pastthefirst
point ofresis tance. Transmissio
npositi ons 0045 Park
positi on
This prevents thevehicl efrom roll-
ing awa ywhen stoppe d.
Only shiftthetransmissi oninto
posi tion 0045 (Ypag e134) when
the vehicl eis stationa ry.The park-
ing lock shou ldnot beused asa
brake whenparking.Alwa ysapp ly
the electronic parkingbrake inadd i-
tion tothe parki nglock inorder to
secure thevehicl e.
If the SmartKey isremoved fromthe
ignitio nlock, thetransmissi onis
locked.
The automatic transmissi onshifts
to 0045 automatical ly:
R when theSmartKey isremoved
from theignitio nlock
R when theengine isswi tched off
with thetransmissi oninposi tion
0046 or003A andone ofthe
doors isopened
In the event ofamalfu nction ofthe
vehicl e'selectronics, thetransmis-
sion may lockinposi tion 0045.
Have thevehicl eelectronics
checked immediatelyat aqua lified
speci alist worksho p. 0046 Reverse
gear
Only shiftthetransmissi oninto
posi tion 0046 when thevehicl eis
stationa ry. Automatic
transmissio n
137Drivi ngand parking Z

Never
leavechildren unsupervisedinthe
vehicle.
! Alway
ssecure thevehicle correctly against
rolli ngawa y.Otherwise, thevehicle orits
drivetrain couldbedama ged.
To ensure thatthevehicle issecured against
rolli ngawa yunintentionally :
R the electric parking brakemustbeappl ied.
R the transmission mustbeinposition 005D.
R the SmartKey mustberemoved fromthe
ignition lock.
R the front wheel smust beturned towards the
curb onsteep uphillor downhil lgradi ents. Switc
hingoffthe engi ne G
WARNING
The automa tictransmission switchestoneu-
tral position Nwhen youswitch offthe
engine. Thevehicle mayrollawa y.There isa
risk ofan accident.
After switching offthe engine, always switch
to parking position P.Prevent theparked
vehicle fromrollingawa yby appl ying the
parking brake.
X Apply theelectric parking brake.
X Shift thetransmission toposition 005D
(Y page 136).
X With theSmart Key:turn theSmartKey to
position 0092inthe ignition lockandremove
it.
The immobil izerisactivated.
X With KEYLESS-GO :press theKEYLESS -GO
Start/S topbutton (Ypage 126).
The engine stopsandallthe indicator lamps
in the instrument clustergoout.
If the driver's doorisclosed, thisisthe
same asSmartKey position0047.Ifthe driv-
er's door isopen, thisisthe same asSmart-
Key position 0092(Ypage 126).
The engine canbeswitched offwhil ethe vehi-
cle isin motion bypressing andholdi ngthe
Start/S topbutton forabou tthree seconds.
This function operates independently ofthe
ECO start/stop automaticengine switch-off
function. Ele
ctric parking brake
General notes G
WARNING
If children areleft unsupe rvisedinthe vehi-
cle, they could:
R open doors, thereby endangering other
persons orroad users
R get out and bestruck byoncoming traffic
R operate thevehicle's equipment
Additional ly,children couldsetthe vehicle in
motion if,for example ,they:
R relea sethe parking brake
R shift theautoma tictransmission outof
park position 005Dorshift themanual
transmission toneutral
R start theengine
There isarisk ofan accident andinjury.
When leavingthe vehicle, always take the
SmartKey withyouand lock thevehicle. This
also appliesforthe digitalvehicle keyifthe
"Digital Vehicle Key"function isactivated via
Mercedes meconnect .
Alway skeep theSmartKey outofreach of
children. Thisalso appliesforthe Digital
Vehicle Keyifthe "Digital Vehicle Key"func-
tion isactivated viaMercedes meconnect .
The function ofthe electric parking brakeis
dependent onthe on-board voltage.Ifthe on-
board voltage islow orthere isamalfu nction
in the system, itmay notbepossib leto appl y
the relea sedparking brake.
X Ifthis isthe case, onlypark thevehicle on
level ground andsecure itto prevent itroll-
ing awa y.
X Shift theautoma tictransmission toposition
005D.
It may notbepossib leto relea sean appl ied
parking brakeifthe on-board voltageislow or
there isamalfu nction inthe system. Contact a
qua lifiedspecia listworkshop.
The electric parking brakeperforms afunction
test atregul arintervals whilethe engine is
switched off.The sounds thatcanbeheard
whil ethis isoccurring arenormal. Parking
147Drivingand parking Z

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 007A
0025
00E5 Ino perativeSee Ino
perativeSee
Ope rator'sMan ual Ope
rator'sMan ual EB
D(elec tron icbrak efor ce dist ribution),AB Sand ESP®
are mal-
fun ction ing.
Ot her drivin gsyst ems anddrivin gsaf etysyst ems mayalsomalfunc-
ti on .
In addit ion,th e00E5, 00BBand0025 warninglamp sligh tup inthe
ins trumen tclus terand awarn ingtone soun ds.
G WAR
NING
The brak esyst emcontinu estofun ction norm ally, butwithout the
fun ction slist ed abov e.The fron tand rear whee lsco uld there fore
loc kif you performafull brak eapplic ation,for exampl e.
The steer abilit yand brak ingcharac teris tics may besev erelyaff ec-
te d. The brak ingdist ancein an eme rgencybrak ingsituati oncan
inc reas e.
If ES P®
is no toper ational, ESP®
is unab leto stabiliz eth eveh icle.
The reisan increas edriskof skiddin gand anacc iden t.
X Dr ive oncar eful ly.
X Vis itaqualif iedspecialistwor kshop immediat ely. 0049
(USA
on ly) 0024 (Canada
on ly)
Tur nOn the Igni‐ Tur
nOn the Igni‐
tio nto Release tio
nto Release
the ParkingBra ke the
ParkingBra ke The
red0049 (USAon ly) or0024 (Canadaonly) ind icat orlamp lights
up.
You attemp tedto release theelec tric park ingbrak ewhile theign i-
ti on was switched off.
X Sm artKey :tur nth eSm artKey topos ition 0047intheign ition lock.
X KEYLESS -GO: swit chon theign ition . 0049
(USA
on ly) 0024 (Canada
on ly)
Ple ase Release Ple
ase Release
Par kingBra ke Par
kingBra ke The
red0049 (USAon ly) or0024 (Canadaonly) ind icat orlamp
flas hes and awarn ingtone soun ds.Aco nd ition forauto matic
rel ease oftheelec tric park ingbrak eis no tfulf illed (Ypage 147).
You aredrivin gwit hth eelec tric park ingbrak eapplie d.
X Releas eth eelec tric park ingbrak eman ually. The
red0049 (USAon ly) or0024 (Canadaonly) ind icat orlamp
flas hes and awarn ingtone soun ds.
You areusin gth eelec tric park ingbrak efor eme rgencybrak ing
(Y page 147). 0049
(USA
on ly) 0024 (Canada
on ly)
Par kingBra keSee Par
kingBra keSee
Ope rator'sMan ual Ope
rator'sMan ual The
yellow 0024warninglamp lightsup.
The electric park ingbrak eis malf unction ing .
To apply :
X Swi tchth eign ition off.
X Pre sstheelec tric park ingbrak ehan dleforatleast tensec onds.
X Sh ift thetrans mis sion topos ition 005D.
X Con sult aqualif iedspecialistwor kshop . 208
Disp
laymes sage sOn -boar dcomp uter anddi sp lay s

Stowage
compartment inthe rear
passenger compartment Only
theleft side ofthe vehicle features arear
stowage compartmen t.
X Open theseat beltguide andremove the
seat belt(Ypage 99).
X Move theleft-hand frontseatforward
(Y page 100)andfold theseat backrest
forward.
X To open: pressrelease button0044.
Cover 0043folds up.
X To close :fold down cover 0043and letit
engage.
X Fold back theseat backrest ofthe left-hand
front seatandmove theseat back
(Y page 100).
X Insert theseat beltback intotheseat belt
guide. Stowage
net There
isastowage net0043inthe front -
passenger footwell. Loading
aidinthe trunk
Raising/low eringtheroof G
WARNING
Body parts canbecome trappedwhenthe
roof isbeing raised orlowered. Thereisa
risk ofinjury.
When raising orlowering theroof, make
sure thatnoparts ofthe body areinthe
vicinity ofmoving parts.Presstheswitch
again ifsomeone becomestrapped.
! Only
close thetrunk oncetheroof islow-
ered completely. Otherwise,youcould dam-
age theroof.
If you close thetrunk lidbefore theroof is
lowered completely, theloading aidswitch
lights upand awarning tonesounds. To
make iteasier toload your luggage ,you
can raise thestowed roofafter youhave
opened thetrunk lid.
You canonly raise roof0044when thetrunk lid
is fully open.
X To raise theroof: press switch 0043.
Roof 0044israised slightly andtrunk partition
0087 moves tothe open position. Switch0043
lights upbrightly.
X To lowe rthe roof: press switch 0043.
The trunk partition movestothe closed
position androof 0044lowers slightly.
Switch 0043lights updimly.
Vehicles withtrunk lidremote closing
featur e:when thetrunk lidisopened, the
loading aidraises automatically. Itlowers
automatically whenthetrunk lidisclosed.
Vehicles withKEYLESS-GO andHANDS-
FREE ACCESS:when thetrunk lidis Stowage
areas
251Stowage andfeatu res Z

If
you need todo any work inside theengine
compartment:
R switch offthe ignition
R never reach intothearea where thereisa
risk ofdanger frommoving components,
such asthe fanrotation area
R remove jewelryandwatches
R keep items ofclothing andhair, forexam-
ple, awayfrom moving parts G
WARNING
The cooling systemispressu rized,particu-
larl ywhen themotor iswarm. Ifyou open
the cap, youcould bescalde difhot coolant
spray sout. There isarisk ofinjury.
Let the engine cooldown before youopen
the cap. Wear protective glovesandprotec-
tive eyew earwhen opening. Openthecap
slow lyto relea sepressu re. Example
X Park thevehicle onalevel surface.
Only check thecoolant levelwhen thevehi-
cle ison alevel surface andtheengine has
cooled down.
X Turn theSmartKey topositio n0048 inthe igni-
tion lock (Ypage 126).
On vehicle swith KEYLESS- GO,press the
Start/St opbutton twice(Ypage 126).
X Check thecoolant temperature gageinthe
multifu nctiondisplay.
The coolant temperature mustbebelow
158 ‡(70 †).
X Turn theSmartKey topositio n0092
(Y page 126)inthe ignition lock. X
Slowl yturn cap0044half aturn counter-clock-
wise toallow excess pressureto escape .
X Turn cap0044further <004600520058005100570048005500100046004F00520046004E005A004C0056
0048[ and
remove it.
If the coolant isat the level ofmarker bar
0087 inthe fillerneck when cold,there is
enough coolant incoolant expansion
tank 0043.
If the coolant levelisappro ximately 0.6in
(1.5 cm)above marker bar0087inthe filler
neck when warm, thereisenough coolant in
expansion tank0043.
X Ifnecessary ,add coolant thathasbeen tes-
ted and appro vedbyMercedes-Benz.
X Repl acecap 0044and turn itclockwise asfar
as itwil lgo.
Further information oncoolant (Ypage 324).
Windshie ldwashe rsystem G
WARNING
Certai ncomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome very
hot. Working inthe engine compartment
poses arisk ofinjury.
Where possible,let the engine cooldown
and touch onlythecomponents describedin
the follow ing. G
WARNING
If you open thehood when thedrive system
has overhea tedorduri ngafire inthe engine
compartment, youcould come intocontact
with hotgases orother escapi ngopera ting
flui ds. There isarisk ofburns.
Let the overhea tedcomponents cooldown
before opening thehood. Inthe event ofa
fire inthe engine compartment, keepthe
hood closed andcallthefire service. G
WARNING
Windshi eldwash erconcentrate ishighl y
flamma ble.Ifwindshi eldwash erconcentrate
gets onto hotcomponents ofthe engine or
the exhau stsystem, itcan ignite. Thereisa
risk offire and injury. 268
Eng
inecompar tmentMaintenanc eand care