warning light MERCEDES-BENZ S-CLASS CABRIOLET 2017 Service Manual

R
Vehicles approaching and overtakin gyou
at av eryd iffe re nt speed.
As aresult, ActiveB lind Spo tAssistma ynei‐
th er giv ewarning snor inter vene in su chsit‐
uations. #
Alw aysp aycareful attention tothet raf‐
fi cs ituation and maintai nasafed is‐
ta nce at thes ide of thev ehicle. Ac
tiveB lind Spo tAssistis onl yana id. It ma yfail
to detect some vehicles and is no tasubstitute
fo ra ttentiv edriving. Alw ayse nsur ethat ther eis
suf ficient di stanc etot he side foro ther road
user sand obs tacles. If
ac ourse-co rrecting brak eapplication occurs,
th er ed warning lam pflashes in theo utside mir‐
ro ra nd aw arning tone sounds. In addition, adis‐
pl ay 1 indicatin gthe danger of aside collision
appear sinthe multifunction displa y.
In rare cases, thes ystemm aymak eani nappro‐
priat ebrake application. This brak eapplication
ma ybei nterrupte data nytime if yous teer
slightl yinthe opposit edirection or accelera te.
Sy stem limitations
Either acourse-cor recting brak eappli cation
appropria teto thed riving situation ,ornoneat
all, ma yoccur in thef ollowing situations:
R Vehicles or obs tacles, e.g. crash ba rriers, are
located on bo thsides of your vehicle.
R Avehicle approaches tooc losely on thes ide.
R Youh avea dop tedas porty driving stylew ith
high cornering speeds.
R Youb rake or accelerat esignificantl y.
R Adriving sa fety sy stem inter venes, e.g .ESP ®
or ActiveB rake Assi st.
R ESP ®
is deacti vated. R
Aloss of tyr epressur eorad efectivetyreis
de tected.
Ac tivatin gordeactivatin gBlind Spo tAssist
or Activ eB lind Spo tAssist
Multimedia sy stem:
, Vehicle .
k Assistance .
Blind
Spot Assist #
Activate Oor deacti vate ª thef unction. 214
Driving and pa rking

Sy
stem limitations
No lane-cor recting brak eappli cation occu rsin
th ef ollowing situations:
R Youc lear lyand activel ysteer,b rake or accel‐
erate.
R Youh ave switched on thet urns ignal indica‐
to r.
R Adriving sa fety sy stem inter venes, su chas
ESP ®
,A ctiv eBrake Assi stor ActiveB lind
Spo tAssist.
R Youh ave adop tedas porty driving stylew ith
high cornering speeds or high ratesofa ccel‐
eration.
R ESP ®
is deactivated.
R Ifal oss of tyr epressur eorad efectivetyre
has been de tected and displ ayed.
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
R Ifth er eisp oor visibility ,e.g. due toinsuf fi‐
cient illumination of ther oad, highl yvariable
shade conditions, or due torain, sno w,fogor
heavy spr ay. R
Ther eisg lare, e.g. from oncoming traf fic, the
sun or reflections.
R Ifth er eisd irtont he windscreen in thev icin‐
ity of them ultifunction camer aorthe camera
is mis tedu p, damaged or obscured.
R Noor se veral, unclear lane markings are
presen tfor one lane, e.g. near roadwor ks.
R The lane markings ar eworn, dar korcovered.
R The dis tance tothev ehicle in front is too
small and thel ane marking sthus canno tbe
de tected.
R The lane markings chang equickl y,e.g. lanes
branc hoff,c ross one ano ther or mer ge.
R The car riag ew ay isvery nar row and winding.
Ve hicles with Drivin gAssistanc epacka ge or
Driving Assistance Plus pa ckage: ActiveL ane
Ke eping Assis tuses radar sensor stomonitor
se verala reas around thev ehicle. If ther adar
senso rsinther ear bumper ar edirty or co vered
wit hs now, thes ystemm aybe impaired or may
no tfunction .Ifano bstacle in thel ane in which
yo ua redrivin ghas been de tected, no lane-cor‐
re cting brak eappli cation occu rs. Ac
tivatin gActive Lan eKeeping Assist &
WARNING Risk of accident despi te
Ac tiveL aneK eeping Assis twarning
Al ane-cor recting brak eappli cation cannot
al wa ys bring thev ehicle bac kintot he origi‐
nal lane. #
Alw ayss teer,b rake or accelera teyour‐
self ,especiall yifActiveLaneK eeping
Assis twarns youorm akesalane-cor‐
re cting brak eappli cation. &
WARNING Risk of accident despi teinter‐
ve ntio nofA ctiveLaneK eeping Assist
Ac tiveL aneK eeping Assis tdoes no tdetect
traf ficc onditions or road users. In very rare
cases, thes ystem ma ymakeani nappropri‐
at eb rake application, e.g. af teri ntentional ly
driving overas olidl ane marking.
The brak eapplication can be inter rupte dat
an yt ime if yous teer slightl yinthe opposite
direction. 216
Driving and pa rking

#
Alw aysm akes uret hat ther eiss uffi‐
cient di stanc etot he side foro ther traf‐
fi coro bstacles. &
WARNING Risk of accident despi teLane
Ke eping Assist
Lane Keeping Assis tcann otalw aysc learly
de tect lane markings.
In su chcases, Lane Keeping Assis tcan:
R giveanu nnecessar ywarning
R notg iveaw arning #
Alw aysp ayparticular attention tothe
traf fics ituation and keep within the
lane, especiall yifActiveLaneK eeping
Assis talerts you. Re
quirements:
The driving speed is at leas t60k m/h. #
Press button 2.
If indicator lamp 1lights up, Lane Keeping
Assis tisactivated. When lane marking sare
de tected, thel ines in thea ssis tance graphic
ar es hown in white.
Sensitivity of Activ eL aneK eeping Assist
Wi th th estandar dora daptiv esetting ,you can
influence when thew arning vibration of Lane
Ke eping Assis ttakes place. In bo
th thestandar dand adaptiv esettings, no
wa rning vibration occur sinthefollowing situa‐
tions:
R Youh ave switched on thet urns ignal indica‐
to r.
R Adriving sa fety sy stem inter venes, su chas
ABS, BASorE SP®
.
In thea daptiv esetting, ther ew ill also be no
wa rning vibration in thef ollowing situations:
R The vehicle is accelerated or braked consid‐
erably.
R Yous teer actively ,e.g. swer vetoavo id an
obs tacle or chang elane quickl y.
R Youc utthec orner on ashar pbend.
Setting thes ensitivit yofActive Lan eKeep‐
ing Assist
Multimedia sy stem:
, Vehicle .
k Assistance .
Act.
Lane Keep. Assist #
Select asetting. Driving and parking
217

%
The position of thed ispla ysdeviates from
th ose displa yedh ere.
Fu rther displa ysinthem ultifunction display:
Z Gearshif
trecommendatio n(→pa ge151)
ë ActiveP arking Assis tactivated
é Parking Assis tPARKTRONIC deactivated
¯ Cruise control (→
page 172)
È Limi
ter( →pag e173)
ç ActiveD ista nce Assi stDISTRONIC
(→ page 176)
a Ac
tiveS teering Assis t(→ pag e182)
ë HOL
Dfunctio n(→pag e188)
_ Ad
aptiv eHighbeam Assis tPlus
(→ pag e122)
ð Maximu
mpermissible speed exceeded
(for cer tain countries only) Ad
justin gthe in stru men tlighting #
Turn brightness control 1up or down.
The lightin gofthe Instrument Displa yand in
th ec ontrol element sinthevehicle interior is
adjus ted. Menus and submenus
Fu
nctions in theS ervice menu of theo n-
boar dcompu ter On-boar
dcomputer:
, Service #
Toselect thef unction: swipe upwards or
down wardsont he left-hand Touc hC ontrol. #
Press thel eft-hand Touc hC ontrol.
Fu nctions in theService menu:
R Messag ememor y(→pag e418)
R Tyres :
- Restartin gthe tyr epressur eloss warning
sy stem (→ page394)
- Checking thet yrep ressur ewitht he tyre
pressur emonitoring sy stem
(→ pag e389)
- Restartin gthe tyr epressur emonitoring
sy stem (→ page390)
R ASSYST PLUS:c alling upthes ervice due
dat e(→pag e347) 220
Instrument Displa yand on-boar dcomputer

The head-up displa
yprojectsi nformation from
th en avigation sy stem, thed rive ra ssis tance sys‐
te ma nd some warning messages abo vethe
cockpit int othe driver's field of vision.
Displa yelements 1
Navigation messa ges
2 Current speed
3 Detected instructions and traf fics igns
4 Setspeed in thed rive ra ssis tance sy stem
(e.g. cruise control)
When your eceiv eacall,the 6 Incoming call
messag eappear sinthe head-up displa y.Sy
stem limits
The visibility is influenced bythef ollowing condi‐
tions:
R seat position
R thep ositioning of thed ispla yimage
R light conditions
R wetroad sur faces
R objects on thed ispla ycover
R polarisation in sunglasses
% Inextreme sunlight, sections of thed isplay
ma ybef aded. This can be cor rected by
switching theh ead-up displa yoffand on
again. Switching
theh ead-u pdispla yon/off #
Press button 1. In
stru ment Displa yand on-boar dcomputer 227

Batter
ydisconnection periods The AS
SYST PLUS service inter vald isplay
can onl ycalculat ethe servic edue date when
th eb attery is connected. #
Notedown thes ervice due dat edispla yedon
th ei nstrument displa ybefor edisconnecting
th eb atter y(→pag e345). Engine compartment
Ac
tiv eb onne t(pedestrian pr otection) Operation of
thea ctiv ebonne t(pedestrian
pr otection)
In cer tain accident situations ,the risk of injury
to pedestrians can be reduced bythea ctuation
of thea ctiv ebonnet .The rear area of thee ngine
bonn etisraised byappr oximatel y80m m.
Fo rthe driv etotheworkshop, rese tthe trig‐
ge reda ctiv ebonn etyourself .Ifthe activ ebonnet
has been triggered, pedestrian pr otection may
be limited.
Aq ualified specialis tworks hop mus tre-ins tate
th ef ull functionality of thea ctiv ebonnet. The activ
ebonne tisnotavailable in all coun‐
tries.
Re setting thea ctiv ebonnet &
WARNING Danger of bu rnsf romh ot
component parts in thee ngine compart‐
ment
Cer tain component parts in thee ngine com‐
partmen tmaybe very hot, e.g. thee ngine,
th er adiator and parts of thee xhau stsystem. #
Letthe engine cool down and only
to uc ht he component parts described
below: #
With your han dflat, push down activ ebonnet
1 inthea reaa round theh inges on bo th
sides (ar rows).
The engine bonne tmuste ngag einp osition. #
Ifth ea ctiv ebonnet can be raised slight lyat
th er ear in thea reaoft he hinges, repeat the
st ep until it engages cor rectl y. 346
Maintenance and care

th
er adiator and parts of thee xhau stsystem. #
Letthe engine cool down and only
to uc ht he component parts described
below: &
WARNING Risk of inju ryfrom using the
windscreen wiper swhile thee ngine bon‐
ne tiso pen
When thee ngine bonn etis open ,and the
windscreen wiper saresetinm otion, youc an
be trapped bythew iper linkage. #
Alw ayss witc hoffthew indscreen wip‐
er sa nd ignition befor eopening the
engine bonn et. #
Toopen: pull lever1torelease thee ngine
bonn et. #
Push bonne tcatch 1upwards and lif tthe
bonne tbyapproximatel y40cm. #
Toclose: lowe rthe bonne tand le titfall from
ah eight of appr oximatel y20cm. #
Ifth eb onnet canstill be lif teds lightl y,open
th eb onnet again and close it wit halittle
mor eforce until it engages cor rectly. 348
Maintenance and care

Information on usin
gahigh-p ressur ecleaner &
WARNING Risk of an accident when
using high-pressur ecleane rswit hc ircu‐
lar je tnozzles
The wate rjet of ac ircula rjet nozzle (dirt
grinder) can cause extern all yinv isible dam‐
ag etot he tyres or chassis parts.
Component sdamaged in this wa ym ayunex‐
pec tedly fail. #
Do no tuse high-pressur ecleaner swith
circular je tnozzles toclean thev ehicle. #
Have damaged tyres or chassis parts
re placed immediatel y. To
avo id damag etoyourvehicle, obser vethef ol‐
lowing when using ahigh-pressur ecleaner:
R Keep thek eyat leas t3ma wayfromt he
ve hicle. Otherwise theb ootlid could open
unintentionall y. R
Maintain adista nce of at leas t30cmtot he
ve hicle.
R Vehicles with deco rativ efoil: parts of your
ve hicle ar ecove redw ithad ecorativ efoil.
Maintain adista nce of at leas t70cm
betwee nthe foil-c ove redp arts of thev ehicle
and then ozzle of theh igh pressur ecleaner.
Mo vetheh igh-pressur ecleaner nozzle
around whils tcleaning.
R Obser vethei nformation on thec orrect dis‐
ta nce in thee quipment manufacturer's oper‐
ating instructions.
R Do no tpoint then ozzle of theh igh-pressure
cleaner directly at sensitiveparts suc has
tyres, thes oftt op, thed raught stop net, slits,
electrical component parts, batteries, light
sources and ventilation sl ots. Wa
shing thev ehicle byhand Obser
vethel egal requ irements, e.g. in anumber
of countries, washing byhand is onl ypermitted
in specially designated wash ba ys. #
Use amild cleaning agent, e.g. car shampoo. #
Washthev ehicle wit hlukewa rmwate rusing
as oftc ar sponge. When doing so, do not
ex pose thev ehicle todirect sunlight. #
Carefully hose thev ehicle of fwithw ater and
dr yu sing achamois. Take car enot to point
th ew ater je tdirectl ytow ards thea ir inlet. Maintenanc
eand care 353

#
Avoid fire ,n aked flames ,creating
spar ksand smoking. #
Mak esuret hat ther eiss ufficient venti‐
latio ndurin gthe chargin gprocess and
during startin gassis tance. #
Do no tlea no verab atter y. If
th ei ndicator/warning lamps in thei nstrument
clus terdon otlight up at lo wtemperatures, it is
ve ry likel ythat thed ischar gedb atter yhas fro‐
zen. &
WARNING Risk ofexplosion from afro‐
zen battery
Ad ischar gedb atter ymayfreeze at temp era‐
tures slightl yabove or belo wfreezing point.
During startin gassis tance or batter ycharg‐
ing, batter ygas ma ybereleased. #
Alw ayst hawaf roze nb atte ry out first
befor echarging it or per form ing start‐
ing assis tance. The service li
feof ab atter ythat has been
th awe dmaybe dramaticall yshor tened. It is
recommended that youh ave athawe db at‐
te ry checkedataq ualified specialis tworks hop.
All vehicles
* NO
TEDama gecaused bynumerou sor
ex tende dattem ptstos tart thee ngine Nume
rous or extende dattem ptstos tart the
engine ma ydamag ethe catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extende dattem pts
to star tt he engine. Obser
vethef ollowing points during starting
assis tance and when chargin gthe battery:
R Onlyuse undamaged jum plead/charging
cables wit hasufficient cross-section and
insula tedt erminal clamps.
R Non- insulated parts of thet erminal clamps
mus tnotcom eintoc ontac twitho ther me tal
parts while thej um plead/charging cable is
connected totheb attery/jump-s tart connec‐
tion point. R
The jum plead/c harging cable mus tnot
come int ocontact wi thanyp arts whic hmay
mo vewhen thee ngine is running.
R Alw aysm akes uret hat neither youn orthe
batter yiselectrost aticall ychar ged.
R Keep away from fire and naked flames.
R Do no tlean overthe batter y.
R When charging: only use batter ychargers
te sted and appr ovedbyM ercedes-Benz, and
please read theb atter ychar ger's operating
instructions befor echarging theb atter y.
Obser vethea dditional following point sduring
st artin gassis tance:
R Startin gassis tance ma yonly be pr ovided
using batteries wit hanominal voltag eof
12 V.
R The vehicles mus tnottouch.
R Petrol engine: only acceptstartin gassis‐
ta nce if thee ngine and exhaus tsystema re
cold. #
Secur ethe vehicle byapplying thee lectric
parking brake. 374
Breakdown assis tance

R
befor eembarkin gonalonger journey
R if operating condition schange, e.g. off-
ro ad driving #
Adjus tthe tyr epressur easn ecessar y. Driving wi
thtyr ep ressur ethat is tooh igh or too
lo wc an:
R Sho rten thes ervice lif eofthe tyres.
R Cause increased tyr edamage.
R Adverselya ffect driving characteristic sand
th us drivin gsafet y, e.g. due toaquaplaning. &
WARNING Risk of accident from repea‐
te dt yrep ressur edrop
If th et yrep ressur edrops repeatedl y,the
wheel, valveort yrem aybe damaged.
Insuf ficient tyr epressur ecan cause thet yres
to bur st. #
Inspect thet yref or signs of fore ign
objects. #
Chec kwhether thew heel or valveh as a
leak. #
Ifyo ua reunable torectify thed amage,
conta ctaq ualified specialis tworks hop. Information on
ther ecommende dtyrep ressure
fo rt he vehicle's factor y-fitted tyres can be found
on thet yrep ressur etable on thei nside of the
fuel filler flap (→ page388).
Use asuitable pressur egaug etoc heckthe tyre
pressure. The outer appearance of atyred oes
no tp ermit an yreliable conclusion about thet yre
pressure.
Ve hicles with atyrep ressur emonitoring sys‐
te m: youc an also checkt he tyr epressur eusing
th eo n-boar dcomputer.
Onl ycorrect tyr epressures whe nthe tyres are
cold. Conditions forc old tyres:
R The vehicle has been par kedw itht he tyres
out of direct sunlight foratl east thre eh ours.
R The vehicle has tr avelled less than 1.6k m.
Ar ise in thet yret emperatur eof10°Ci ncreases
th et yrep ressur ebya pprox.10k Pa(0.1b ar/ 1.
5p si).Tak et his int oaccount when checking
th et yrep ressur eofw armt yres. Ty
re pressur etable The tyr
epressure table is on thei nside of the
fuel filler flap. The tyr
epressur etable sho ws therecommended
tyr ep ressur efor all tyres appr ovedfor this vehi‐ 386
Wheels and tyres