ECU MERCEDES-BENZ S-CLASS CABRIOLET 2017 Owners Manual

This jeopardises
theo perating and road
saf etyoft hevehicle. #
Stow all object sinthevehicle securely
so that they canno tget intot he driver's
fo ot we ll. #
Alw aysf itth ef loor mats securel yand
as prescribed in order toensur ethat
th er eisa lway ss ufficient room fort he
pedals. #
Do no tuse loose floor mats and do not
place floor mats on topofo ne ano ther. *
NO
TEBatter ydisch arging from using
device sconnected tothed iagnostics
connection Using devices at
thed iagnostics connection
drains theb atter y. #
Chec kthe charge leve loft he batter y. #
Ifth ec har geleve lisl ow,charg ethe
batter y,e.g. bydriving aconsiderable
dis tance. Connecting equipment
tothed iagnostics con‐
nection can lead toemissions monitoring infor‐
mation being reset, fore xamp le. This ma ylead
to thev ehicle failing tomee tthe requ irements of
th en exte missions inspection during them ain
inspection. Qualified specialis
tworks hop
Aq ualified specialis tworks hop has then eces‐
sar yspecial skills, tools and qualification sto
cor rectl yc arry out an ynecessar yworkony our
ve hicle. This particularly applies towo rkreleva nt
to saf ety.
Alw aysh ave thef ollowing workcar ried out on
yo ur vehicle at aqualified specialis tworks hop:
R workreleva nt tosaf ety
R service and maintenance work
R repair work
R modifications as well as ins tallation sand
con versions
R workon electronic components Mercedes‑Benz
recommends aMercedes‑Benz
service centre. Ve
hicl eregistration
Mercedes-Ben zmayask its service centres to
car ryout tech nica linspections on cer tain vehi‐
cles. The qualit yors afet yoft hevehicle is
impr ovedasar esult of thei nspection.
Mercedes-Benz can onl yinfor myou aboutv ehi‐
cle checks if Mercedes-Benz has your registra‐
tion data.
It is possible that your vehicle has no tyet been
re gis tere diny our name in thef ollowing cases:
R Ifyo ur vehicle wasn otpur chased at an
authorised specialis tdealer.
R Ifyo ur vehicle has no tyet been examined at
aM ercedes-Ben zservic ecentre.
It is advisable toregis tery our vehicle wit ha
Mercedes-Benzs ervice centre.
Infor mMercedes-Benz as soon as possible
abouta nychang eina ddress or vehicle owner‐ 30
General no tes

ship.
Youc an do this at aMercedes-Benz service
centre, fore xamp le. Cor
rect use of thev ehicle
If yo ur emo veanyw arning sticke rs,y ou or others
could failto recognise cer tain dangers. Lea ve
wa rning sticke rs in position.
When using thev ehicle, obser vethef ollowing
information:
R thes afet yn otes in this manual
R tech nica ldataf or thev ehicle
R traf ficr ules and regulations
R laws and saf etys tandards per tainin gto
mo torv ehicles Implied
warranty
* NO
TEDama getothev ehicle arising
from violation of these operating instruc‐
tions. Damag
etothevehicle can arise from viola‐
tion of these operating instructions. This damag
eisnotcoverede ither bythe
Mercedes-Benzi mplied warrant yorbyt he
New‑ or Used- Vehicle Warrant y. #
Followt he instructions in these operat‐
ing instruction sonproper operation of
yo ur vehicle as well as on possible vehi‐
cle damage. QR code
forr escue card
The QR code is secured in thef uel filler flap and
on theo pposit eside on theB -pillar .Intheeve nt
of an accident, rescue services can use theQR
code toquickl yfind thea ppropriat erescue card
fo ry our vehicle. The cur rent rescue car dcon‐
ta ins them ostimp ortant informatio nabout your
ve hicle in acompact form ,e.g. ther outing of the
electric lines.
Fu rther information can be obtained at http://
www.mercedes-benz.de/qr-code. Ve
hicl edata storage Information from electronic control units
Electronic control unit
sarefitted in your vehicle.
Some of these ar enecessar yfor thes afeo pera‐
tion of your vehicle, while some assis tyou when
driving (driver assi stanc esystems). In addition,
yo ur vehicle pr ovides con venience and enter tain‐
men tfunctions, whic harealso made possible by
electronic control units.
Elect ronic control units contai ndatam emories
whic hcan temp orarily or permanently store
te ch nica linformatio nabout thev ehicle's operat‐
ing status ,component loads, main tenance
re qu irements and tech nica levents or faults.
In general ,this information documents thes tate
of ac omponent part, amodule, asystemort he
sur rounding ssucha s:
R operatin gstatuses of sy stem components
(e.g. fluid le vels, batter ystatus ,tyrep res‐
sure)
R status messages concernin gthe vehicle and
its individualc omponents(e.g. number of
wheel revo lutions/speed, decele ration, lat‐ General no
tes31

Depending on
ther espectiv eintegration type,
th is includes, fore xamp le:
R general vehicle information
R position data
This enables theu se of selected smartphone
Apps, e.g. navigation or music playbac k.Ther eis
no fur ther interaction between thes martphone
and thev ehicle; in particular ,vehicle dat aisnot
directl yaccessible. The type of fur ther dat apro‐
cessin gisdetermined bythep rovide roft he App
used. The respectiv eApp and your smartphone's
operatin gsystemd etermine whe ther changes
can be made tothes ettings and whic hsettings
can be changed. Service pr
oviders Wire
less networ kconnection
If yo ur vehicle has awireless networ kconnec‐
tion, it enables dat atobeexchanged between
yo ur vehicle and additional sy stems. The wire‐
less networ kconnection is enabled via thev ehi‐
cle's transmission and reception uni torvia con‐
nected mobil eend device s(e.g .sma rtphones). Onlin
efunction scan be used via thew ireless
networ kconnection. This includes online serv‐
ices and applications/Apps pr ovided bythe
manufacturer or other pr oviders.
Manu factu rer's se rvices
The manufacturer describes ther espectiv efunc‐
tions and cor responding legal dat aprotection
information when suitable fort he manufacturer's
online services. Personal dat amaybe used for
th ep rovision of online services. Dat ais
ex ch anged via asecur econnection, e.g .tothe
manufacturer's designated IT sy stems. Personal
dat aisc ollected, processed and used via the
pr ov ision of service sexclusivel yonthe basis of
legal permissions or wit hprior consent.
The services and function s(sometimes subject
to afee) can usually be activated or deactivated.
In some cases, this also applies tothee ntire
ve hicle's dat aconnection. This excludes, in par‐
ticular ,legally prescribed function sand services.
Thir dparty se rvices
If it is possibletou se onlineservices from other
pr ov iders, these services ar esubject tothed ata
pr otection and term sofu se ofther esponsible pr
ov ider .The manufacturer has no influenc eon
th ec ontent exc hanged.
Please enquire, therefore, about thet ype, scope
and purpose of thec ollection and use of per‐
sonal dat aaspartoft hirdp arty service sfrom
th eir respectiv eprovide r. Copyright
Informatio nonfreea nd open source software
licences fory our vehicle's softwar ecan be found
on thed atas tora ge medium in your vehicle
document walleta nd on theI nterne ttog ether
wit hu pdates:
http://www.mercedes-benz.com/opensource General no
tes33

Re
stra int sy stem Pr
otection byther estraint sy stem The
restra int sy stem includes thef ollowing:
R Seat belt sy stem
R Airbags
R Child restra int sy stem
R Child seat securing sy stem
The restra int sy stem can reduce ther isk of vehi‐
cle occupants coming int ocontact wit hparts of
th ev ehicle interior in thee vent of an accident. In
th ee vent of an accident, ther estraint sy stem
can also reduce thef orces towhic hthe vehicle
occupants ar esubjected.
As eat belt can onl yprovide theb estleve lofp ro‐
te ction if it is worncor rectl y.Depending on the
de tected accident situation, sea tbeltt ensione rs
and/or airbags supplement thep rotection
of fere dbyac orrectly wornseat belt. Seat belt
te nsioner sand/or airbags ar enotdepl oyed in
ev erya ccident. In order
fort he restra int sy stem toprov ide the
intended le velofp rotection, eac hvehicle occu‐
pant mus tobser vethef ollowing information:
R Fasten seat belts cor rectl y.
R Sit in an almos tupright seat position wi th
th eir bac kagains tthe seat backrest.
R Sit wit htheir feet resting on thef loor ,ifp os‐
sible.
R Alw ayss ecur epersons under 1.50 mt all in
an additional restra int sy stem suitable for
Mercedes-Benzv ehicles.
Ho wever,no sy stem available toda yc an com‐
ple tely eliminat einjuries and fata lities in every
acciden tsituation .Inparticular ,the seat belt
and airbag generally do no tprotect against
objects penetrating thev ehicle from theo utside.
It is also no tpossible tocompl etelyr ule out the
ri sk of injur ycaused bythea irbag deploying. Re
duce drestraint sy stem pr otection &
WARNING Risk of inju ryor deat hfrom
modifications tother estraint sy stem
The restra int sy stem can no longer function
cor rectly af tera lterations ha vebeen made.
The restra int sy stem ma ythen no tprotect
th ev ehicle occupants as intended byfailing
in an accident or triggering unexpec tedly ,for
ex ample #
Nevera lter thep arts of ther estraint
sy stem. #
Nevertamper wit hthe wiring or any
electronic component parts or their
software. If it is necessar
ytomodifythev ehicle toaccom‐
modat eaperson wit hdisabilities, con tact a
qu alified specialis tworks hop.
Mercedes-Benz recommends that youo nly use
drivin gaids whic hhaveb een appr ovedspecifi‐
cally fory our vehicle byMercedes-Benz. 34
Occupant saf ety

In order
fort he cor rectly wornseat belt topro‐
vide thei ntended le velofp rotection, eac hvehi‐
cle occupant mus tobser vethef ollowing infor‐
mation:
R The seat belt mus tnotbe twis teda nd must
fi tt ightly and snu glya cross theb ody.
R The seat belt mus tberouted across the
centr eofthe shoulder and as lo wdown
across theh ips as possible.
R The shoulder section of thes eat belt should
no ttouc hyour nec knor be routed under
yo ur ar morb ehindyour bac k.
R Avoid wearing bulk ycloth ing, e.g. awinter
coat.
R Push thel ap belt down as farasp ossible
across your hips and pull tight wit hthe shoul‐
der section of theb elt. Ne verrout ethe lap
belt across your abdomen.
R Neverrout ethe seat belt across sharp, poin‐
te d, abrasiv eorfragile objects.
R Onlyone person should use eac hseat belt at
an yo ne time. Ne vera llow babies and chil‐
dren totrave lsitting on thel ap of ano ther
ve hicle occupant. R
Nevers ecur eobjects wit haseat belt if the
seat belt is also being used byone of the
ve hicle's occupants. Alw ayso bser vethe
instructions forl oading thev ehicle when
securing objects, luggag eorloads
(→ pag e108).
Also ensur ethat no objects, e.g. acushion,
ar ee verp laced between aperson and the
seat.
If ch ildren ar etrave lling in thev ehicle, be sur eto
obser vethei nstruction sand saf etyn otes on
"Children in thev ehicle" (→ page52). Re
duce dseatb eltp rote ction &
WARNING Risk of inju ryor deat hdueto
incor rect sea tposition
The sea tbeltd oesn otoffert he intended
le ve lofp rotection if youh ave notm ove dthe
seat backres ttoanalmostvertical position.
When braking or in thee vent of an accident,
yo uc ould slide underneat hthe seat belt and sus
tain abdominal or nec kinjuries, fore xam‐
ple. #
Adjus tthe seat proper lybefor ebegin‐
ning your journe y. #
Alw ayse nsur ethat thes eat backres tis
in an almos tvertical position and that
th es houlder section of your seat belt is
ro uted across thec ent reofyour shoul‐
der. &
WARNING Risk of inju ryor deat hdueto
an extende dseatb elte xtende rwhile the
ve hicle is in motion
If th es eat belt extende rise xtende dwhile
th ev ehicle is in motion, thes eat belt will not
fi tc orrectl ya gainst theb ody.
The seat belt ma ynotthen pr ovide the
proper pr otection. #
Alw ayse nsur ethat thes eat belt
ex tende risr etra cted whil ethe vehicle
is in motion. Occupant saf
ety37

If
th es eat belt extende rdoesn otretract au to‐
matically ,itcan be retracted manually .Todoso,
press thes eat belt extende rbackasf ar as it will
go be fore startin gthe vehicle. Pressing thes eat
belt extende rbacki ntop lace requ ires forc e. &
WARNING Risk of inju ryor deat hwhen
additional restra int sy stems ar enotused
fo rp ersons wit hasmaller build
Pe rsons under 1.50 mt all canno twear the
seat belt cor rectly wi thout asuitable addi‐
tional restra int sy stem.
If th es eat belt is no twornc orrectly ,itc an‐
no tp erform its intended pr otectiv efunction.
In addition, an incor rectly fastened seat belt
can also cause injuries, fore xamp le, in the
ev ent of an acciden torwhen braking or
ch anging direction sudden ly.#
Alw ayss ecur epersons under 1.50 m
ta ll in asuitable restra int sy stem. &
WARNING Risk of inju ryor deat hdueto
damaged or modified seat belts
Seat belts cann otprov ide pr otection in the
fo llowing situations:
R Ifth es eat belts ar edamaged, modified,
ex treme lydirty ,bleached or dyed
R Ifth es eat belt buckle is damaged or
ex treme lydirty
R Ifth es eat belt tensioners, sea tbelt
anchorages or sea tbeltr etra ctor shave
been modified
Seat belts ma ybedamaged in an accident,
although thed amag emaynotbev isible, e.g.
due tosplinter sofglass.
Modified or damaged seat belts ma ytear or
fa il, e.g. in an accident.
Modified seat belt tensioner scould acciden‐
ta llyt rigger or failto function as intended. #
Neverm odify thes eat belts, seat belt
te nsioners, sea tbelta nchorages or seat
belt retractors. #
Makesur ethat thes eat belts are
undamaged, no tworna nd clean. #
Alw aysh ave thes eat belts checked
immediatel yafter an accident at a
qu alified specialis tworks hop. Mercedes-Benz
recommends that youo nly use
seat belt swhichh aveb een appr ovedspecifically
fo ry our vehicle byMercedes-Benz. &
WARNING Risk of inju ryor deat hfrom
deplo yedp yrot echni cseatb eltt ension‐
ers
Pyr otechni cseatb eltt ensione rsthat ha ve
been deplo yeda reno longer operational and
ar eu nable toper form their intended pr otec‐
tiv ef unction. #
Therefore, ha vedeplo yedp yrot echnic
se at belt tensioner simmedia tely
re placed at aqualified specialis twork‐
shop. 38
Occupant saf ety

passenger seat should be mo
vedasf ar back
as possible.
When doing so, alw ayso bser vethei nforma‐
tion on thec orrect driver's sea tposition
(→ page 94).
R Onlyhold thes teering wheel bythes teering
wheel rim. This allows thea irbag tobe fully
deplo yed.
R Alw aysl ean agains tthe seat backres twhen
th ev ehicle is in motion. Do no tlean forw ards
or agains tthe door or side windo w.Youm ay
ot herwise be in thed eployment area of the
airbags.
R Alw aysk eep your feet on thef loor .Don ot
put your feet on thec ockpit, fore xamp le.
Yo ur feet ma yotherwise be in thed eploy‐
ment area of thea irbag.
R Ifch ildren ar etrave lling in thev ehicle,
obser vethea dditional no tes( → pag e52).
R Alw ayss towa nd secur eobject scorrectl y. Objects in
thev ehicle interior ma ypreve nt an
airbag from functioning cor rectl y.Eac hvehicle
occupant mus talway sm akes ureoft hefollow‐
ing:
R Ther eareno people, animals or objects
between thev ehicle occupants and an air‐
bag.
R Ther eareno objectsb etwe en thes eat, door
and door pillar (B-pillar).
R Ther eareno har dobjects, e.g. coat hangers,
hanging on theg rabh andles or coat hooks.
R Ther eareno accessor yparts, suc hascup
holders, attached tothev ehicle within the
deployment area of an airbag, e.g. on doors,
side windo wsor side panelling.
R Ther eareno heavy ,sharp-edged or fragile
object sinthe poc kets of your clo thing. Store
suc hobjectsinas uitable place. Re
duce dairbag pr otection &
WARNING Risk of inju ryfrom modi fica‐
tions tothea irbag co ver
If yo um odify an airbag co verora ffix objects
suc hass tickers to it,thea irbag can no lon‐
ge rfunction cor rectl y. #
Neverm odify an airbag co vera nd do
no ta ffix objectstoi t. The ins
tallation location of an airbag is identified
by theA IRB AG symbol (→ page41). &
WARNING Risk of inju ryor deat hdueto
th eu se of unsuitable seat co vers
Uns uitable seat co vers can obstruct or pre‐
ve nt thed eployment of thea irbags integra‐
te di ntot he seats.
Consequentl y,thea irbags cann otprotect
ve hicle occupants as they ared esigned to
do. In addition, theo peration of thea uto‐
matic front passenger airbag shutof fcould
be restricted. Occupant saf
ety43

Fu
nction of theP ASSE NGER AIR BAGi ndica‐
to rlamps Sy
stem self- test
When thei gnition is switched on, asystems elf-
te st is per form ed during whic hthe two
PA SSENGER AIR BAGONa nd OFFindicator
lamps light up simultaneousl y.The
status of thef ront passenger airbag is dis‐
pla yeda fter thes ystem self-tes t:
R PASSENGER AIR BAGONl ightsupf or
60 seconds, subsequently bo thindicator
lamps ar eoff(PASSENGER AI RBAG ON and
OFF): thef ront passenger airbag is able to
deplo yintheeve nt of an accident.
R PASSENGER AIR BAGO FFlight supc ontinu‐
ously: thef ront passenger airbag is disabled.
It will then no tbed eployedint heeve nt of an
accident.
If th eP ASSENGER AIR BAGONi ndicator lam pis
off, on lytheP ASSENGER AIR BAGO FFindicator
lam pshows th estatus of thef ront passenger
airbag. The PASSENGER AIR BAGO FFindicator
lam pm aybe lit continuousl yorbeoff.
If th eP ASSENGER AIR BAGO FFindicator lamp
and the6 restra int sy stem warning lamp
light up simultaneousl y,thef ront passenger seat
ma ynotbe used. Also in this case, do no tins tall
ac hild restra int sy stem on thef ront passenger
seat. Ha vethea utomatic front passenger airbag
shutof fchec keda nd repaired immediately at a
qu alified specialis tworks hop. St
atus display
If th ef ront passenger seat is occupied, ensure,
bo th befor eand during thej ourne y,that thes ta‐
tus of thef ront passenger airbag is cor rect for
th ep reva ilin gs ituation.
Af teri nstalling arear ward-facing child
re stra int sy stem on thef ront passenger
seat: PASSENGER AIR BAGO FFmus tbel it con‐
tinuousl y. &
WARNING Risk of inju ryor deat hfrom
using arear ward-facing child restra int
sy stem when thef ront passenger airbag
is enabled
If yo us ecur eac hild in arear ward-facing
ch ild restra int sy stem on thef ront passenger
seat and theP ASSENGER AIR BAGO FFindi‐
cator lam pisoff,t he front passenger airbag
can deplo yintheeve nt of an accident.
The child could be stru ck bythea irbag.
Alw ayse nsur ethat thef ront passenger air‐
bag is disabled. The PASSENGER AIR BAG
OFF indicator lam pmustbel it. 46
Occupant saf ety

NEVER use
arear wardfacing child restra int
on aseat pr otected byan ACTIVE FRONT
AIRB AGin front of it ;DEATH or SERIOUS
INJUR YtotheCHILD can occur. When ins
talling achild restra int sy stem on the
front passenger seat, obse rvet he vehicle-spe‐
cific information in this Owner's Manual.
Dependin gonthechild restra int sy stem and the
st atur eoft hechild, theP ASSENGER AIR BAG
OFF indicator lam pmaybe off. In this case, do
no tins tallth er ear ward-facing child restra int
sy stem on thef ront passenger seat.
Ins tead, ins tallth er ear ward-facing child
re stra int sy stem on asuitable rear seat.
Af teri nstalling aforwa rd-facin gchild
re stra int sy stem on thef ront passenger
seat: depending on thec hild restra int sy stem
and thes tatur eoft hechild, PASSENGER AIR
BA GO FFma ybel it continuousl yorbeoff.
Alw ayso bser vethef ollowing information. &
WARNING Risk of inju ryor deat hdueto
incor rect positioning of thef orwa rd-
fa cing child restra int sy stem
If yo us ecur eac hild in aforwa rd-facin gchild
re stra int sy stem on thef ront passenger seat
and youp ositio nthe front passenger seat too
clos etot he cockpit, in thee vent of an acci‐
dent, thec hild could:
R Come int ocontact wi th thevehicle inte‐
ri or if theP ASSENGER AIR BAGO FFindi‐
cator lam pislit,f or example.
R Bestru ck bythea irbag if theP ASSENGER
AIR BAGO FFindicator lam pisoff. #
Alw aysm ove thef ront passenger seat
as farb ackasp ossible and fully retract
th es eat cushion lengt hadjustment.
Alw aysm akes uret hat thes houlder belt
st ra pisc orrectly routed from thes eat
belt outle tonthevehicle tothes houl‐
der belt guide on thec hild restra int sys‐
te m. The shoulder belt stra pm ustbe
ro uted forw ards and down wardsf rom
th es eat belt outlet. If necessar y,adjust th
es eat belt outle tand thef ront
passenger seat accordingly. #
Alw ayso bser vethec hild restra int sys‐
te mm anufacturer's ins tallation instruc‐
tions. When ins
talling achild restra int sy stem on the
front passenger seat, obse rvet he vehicle-spe‐
cific information in this Owner's Manual.
If ap erson is sitting in thef ront passenger
seat: PASSENGER AIR BAGO FFma ybel it con‐
tinuousl yorbeo ff,d ependin gonthe person's
st ature.
Ap erson on thef ront passenger seat must
alw ayso bser vethef ollowing information:
R Ifth ef ront passenger seat is occupied with
an adult or aperson wit hastatur ec orre‐
sponding tothat of an adult ,the PASSENGER
AIR BAGO FFindicator lam pmustbeo ff.T his
indicates that thef ront passenger airbag is
enabled.
If th eP ASSENGER AIR BAGO FFindicator
lam pisl it continuousl y,an adult or person
wit hab uild cor responding tothat of an adult Occupan
tsafety 47

&
WARNING Danger of inju ryor death
from obstructed roll bars
If yo ul eave object soritems of clo thing on
th ec oversoft heroll bars, this ma yrestrict
th er oll bar sastheye xtend.
Consequently ,the roll bar scanno tprotect as
th ey ared esigned todo. Furthermore, the
object smayendanger vehicle occupants
when ther oll bar sextend. #
Alw aysm akes uret hat thet her eis
no thing in thes weep of ther oll bars. #
Alw ayss towa nd secur eobject sinthe
ve hicle cor rectl y. The
roll bar sareunder thec oversb ehind the
re ar head restra ints. The roll bar saretriggered
when danger of thev ehicle rolling overisd etec‐
te d.
Onc ethe roll bar shaveb een triggered, youc an
no lon gerc lose asoftt op that is open .Inthis
case, consult then extq ualified specialis twork‐
shop. PRE-SAFE
®
sy stem PRE-
SAFE®
(Pre-Crash Saf ety-Sy stem) PRE-
SAFE®
is able todetect cer tain critical driv‐
ing situations and implemen tpre-em ptivem eas‐
ures toprotect thev ehicle occupants.
PRE-SAFE ®
can implement thef ollowing meas‐
ures independentl yofeacho ther:
R Tightening thes eat belts on thed rive r's seat
and front passenger seat.
R Closing thes ide windo ws.
R Vehicles with memor yfunction: moving
th ef ront passenger seat toam oref avo ura‐
ble seat position. R
Vehicles with multicontour seat: increas‐
ing thea ir pressur einthe seat side bols ters
of thes eat backrest.
R PRE-SAFE ®
Sound: pr ovided that them ulti‐
media sy stem is switched on, generates a
brie fnoise signa ltostimulat ethe innat epro‐
te ctiv em echanism of aperson's hea ring.
* NO
TEDama gecaused byobject sinthe
fo ot we ll or behin dthe seat The automatic adjustment of
thes eat posi‐
tion ma yresult in damag etothe seat and/or
th eo bject. #
Stow object sinas uitable place. Re
versing theP RE- SAFE®
sy stem measures If an acciden
tdid no toccur ,the pre-em ptive
measures that we retak en ar ereve rsed.
Yo uw ill need toper form certain settings your‐
self. Occupan
tsafety 49