MERCEDES-BENZ S-CLASS COUPE 2017 Service Manual

When activated, an airbag can pr
ovide addi‐
tiona lprotection fort he respectiv evehicle
occupant. AIRB
AG Potentia lprotection for
…
Knee airbag Thigh ,knee and lo werleg
Driver's airbag,
front passenger
front airbag Head and
ribcage
Wi ndowbag Head
Sid eimpact air‐
bag Ribca
ge,a lso pelvis for
front sea toccupants The front passenger front airbag can onl
ybe
depl oyed in an acciden tifthePASSENGER AIR
BA GO FFindicator lam pisoff.Ift he front
passenger seat is occupied, mak esure, bo th
befor eand during thej ourne y,that thes tatus of
th ef ront passenger front airbag is cor rect
(→ page 44). *
NO
TEImpo rtant points toremember if
th ef ront passenger seat is unoccupied In an accident,
thec omponents of the
re stra int sy stem ma ydeplo yunnecessarily
on thef ront passenger side if:
R Ther eareheavy objects on thef ront
passenger seat.
R The seat belt tongu eise ngaged in the
seat belt buckle of thef ront passenger
seat and thef ront passenger seat is
unoccupied. #
Stow object sinas uitable place. #
Onlyone person should use eac hseat
belt at an yone time. Pr
otection bythea irbags Depending on
thea cciden tsituation ,anairbag
ma ysupplement thep rotection of fere dbyac or‐
re ctly fastened seat belt. &
WARNING Risk of inju ryor deat hdueto
incor rect sea tposition
If yo ud eviat ef romt he cor rect sea tposition,
th ea irbag cann otper form its intended pro‐
te ctiv efunction and deployment ma yeven
cause fur ther injuries.
To avo id hazardous situations ,alway sm ake
sur ethat all vehicle occupants:
R Have their seat belt fastened cor rectly,
including pregnant women.
R Ares eated properly and keep as fara way
as possible from thea irbags.
R Obser vethef ollowing information. #
Alw aysm akes uret hat ther ea reno
objects between thea irbag and vehicle
occupant. To
avo idther isk sresulting from thed eployment
of an airbag, eac hvehicle occupant must
obser vethef ollowing information:
R Befor estartin gy our journe y,adjus tyour seat
cor rectly ;the driver's seat and front 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 90).
R Onlyhold thes teering wheel bythes teering
wheel rim. This allow sthe airbag 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 e48).
R Alw ayss towa nd secur eobject scorrectly. Objects in
thev ehicle interior ma ypreve nt an
airba gfromf unctioning cor rectly .Eachv ehicle
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 (→ page37). &
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
ety39

#
Yous hould on lyuse seat co vers that
ha ve been appr oved fort he cor respond‐
ing seats byMercedes-Benz. &
WARNING Risk of inju rydue tomalfunc‐
tions of thes ensor sinthe door panelling
Sensor stocontrol thea irbags ar elocated in
th ed oors. Modification sorworkn otper‐
fo rm ed cor rectl ytot he door sordoor panel‐
ling, as well as damaged doors, can lead to
th ef unction of thes ensor sbeing impaired.
The airbags might therefor enotfunction
proper lyan ym ore.
Consequent ly,t he airbags canno tprotect
ve hicle occupants as they ared esigned to
do. #
Neverm odify thed oor sorp arts of the
doors. #
Alw aysh ave workon thed oor sord oor
panelling car ried out at aqualified spe‐
cialis tworks hop. &
WARNING Risk of inju rydue todeplo yed
airbag
Ad eplo yeda irbag no longer of fers anyp ro‐
te ction and canno tprovide thei ntended pro‐
te ctiv efunction in thee vent of an accident. #
Have thev ehicle towe dtoaq ualified
specialis tworks hop in order tohave the
deplo yeda irbag replaced. Ha
ve deplo yeda irbags replaced immediately. St
atus of thef ront passenger airbags Fu
nction of thea utomatic front passenger
front airbag deactivation sy stem
The automatic front passen gerfront airbag deac‐
tivation sy stem is able todetect whe ther the
front passenger sea tisoccupied byap erson or
ac hild restra int sy stem. The front passenger air‐
bag is enabled or disabled accordingly. When
fitting achild restra int sy stem tothef ront
passenger seat, alw aysm akes ureoft hefollow‐
ing:
R Ensur ethat thec hild restra int sy stem is posi‐
tioned cor rectl y(→pag e55).
R Alw ayso bser vethec hild restra int sy stem
manufacturer's ins tallation instructions.
R Neverp lace objects, e.g. cushions, under or
behind thec hild restra int sy stem.
R Fullyr etra ct thes eat cushion lengt hadjust‐
ment.
R The entir ebase of thec hild restra int sy stem
mus talway sr estont he sitting sur face of the
front passenger seat.
R The backres toftheforw ard-facin gchild
re stra int sy stem must, as farasp ossible, be
re sting on thes eat backres tofthe front
passenger seat.
R The child restra int sy stem mus tnot to ucht he
ro of or be put under stra in by theh ead
re stra ints. Adjus tthe seat backres tinclina‐
tion and theh ead restra int setting accord‐
ing ly. 40
Occupant saf ety

&
WARNING Risk of inju ryor deat hdueto
object sbetwe en thes itting sur face and
th ec hild restra int sy stem
Objects between thes itting sur face and the
ch ild restra int sy stem could af fect thef unc‐
tion of thea utomatic front passenger airbag
shutoff.
This could result in thef ront passenger air‐
bag no tfunctioning as intended during an
accident. #
Do no tplace an yobjects between the
sitting sur face and thec hild restra int
sy stem. #
The entir ebase of thec hild restra int
sy stem mus talway sr estont he sitting
sur face of thef ront passenger seat. #
The backres toftheforw ard-facin gchild
re stra int sy stem must, as farasp ossi‐
ble, be resting on thes eat backres tof
th ef ront passenger seat. #
Alw aysc ompl ywitht he child restra int
sy stem manufacturer's ins tallation
instructions. Ap
erson on thef ront passenger seat must
obser 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.
Otherwise, thef ront passenger airbag ma ybe
disabled bymis take ,for example in thef ollowing
situations:
R The front passenger transfer stheir weight by
supporting themselves on avehicle armrest.
R The front passenger sits in suc hawaythat
th eir weight is raised from thes itting sur‐
fa ce. &
WARNING Risk of inju ryor deat hdueto
deactivated front passenger airbag
If th eP ASSENGER AIRB AGOFF indicator
lam pisl it,thef ront passenger airbag is disa‐
bled. It will no tbedeployedint heeve nt of
an accident and canno tperform its intended
pr otectiv efunction. Ap
erson in thef ront passenger seat could
th en, fore xamp le, com eintoc ontact wi th
th ev ehicle interior ,especially if thep erson is
sitting tooc lose tothec ockpit.
If th ef ront passenger seat is occupied,
alw ayse nsur ethat:
R The classification of thep erson in the
front passenger sea tiscorrect and the
front passenger airbag is enabled or disa‐
ble dina ccordance wit hthe person in the
front passenger seat.
R The front passenger sea thas been mo ved
as farb ackasp ossible.
R The person is seated cor rectl y. #
Ensu re,b othb efor eand during thej our‐
ne y,that thes tatus of thef ront
passenger airbag is cor rect. Occupant saf
ety41

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. 42
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 43

should no
tuse thef ront passenger seat.
Ins tead, they should use arear seat.
R Ifth ef ront passenger seat is occupied wit ha
person of smaller statur e(e.g. ateenager or
small adult), theP ASSENGER AIR BAGO FF
indicator lam peither light supcontinuously
or remains out, depending on ther esult of
th ec lassification:
- PASSENGER AIRB AGOFF is off: mo vethe
front passenger sea tasfar ba ckas possi‐
ble or aperson of smaller statur eshould
use arear seat.
- Ifth eP ASSENGER AIRB AGOFF indicator
lam pisl it continuously: aperson of
smaller statur eshoul dnotuse thef ront
passenger seat. &
WARNING Risk of inju ryor deat hwhen
th eP ASSENGER AIR BAGO FFindicator
lam pisl it
If th eP ASSENGER AIR BAGO FFindicator
lam premain slit af tert he sy stem self-test,
th ef ront passenger airbag is disabled. It will
no tbed eployedint heevent of an accident. In
this case, thef ront passenger airbag can‐
no tp erform its intended pr otectiv efunction,
e.g. when aperson is seated in thef ront
passenger seat.
That person could, fore xamp le, com einto
con tact wi th thevehicle interior ,especially if
th ep erson is sitting tooc lose tothec ockpit.
If th ef ront passenger seat is occupied,
alw ayse nsur ethat:
R The classification of thep erson in the
front passenger sea tiscorrect and the
front passenger airbag is enabled or disa‐
ble dina ccordance wit hthe person in the
front passenger seat.
R The person is sea tedp roper lywit hac or‐
re ctly fastened seat belt.
R The front passenger seat has been mo ved
as farb ackasp ossible. Fu
rther related subjects:
R Child restra int sy stem on thef ront passenger
seat (→ page53). R
Suitable positioning of thec hild restra int sys‐
te m( →pag e55). 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 sliding sunroof: closingthe
sliding sunroof.
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. 44
Occupant saf ety

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 certains ettings your‐
self. #
Ifth es eat belt pre-tensioning is no treduced,
mo vethes eat backres tbacks lightl y.
The locking mechanism releases. Fu
nction of PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus) PRE-
SAFE®
PLUS can de tect cer tain impacts,
particular lyan imminent rear impact ,and take
pre-em ptivem easures toprotect thev ehicle
occupants. These measures canno tnecessarily
pr eve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thef ollowing
measures independentl yofeacho ther:
R Tightening thes eat belts on thed rive r's seat
and front passenger seat.
R Activating ther ear hazar dwarning light sata
higher flashin gfrequ enc y.
R Increasing brak epressure when thev ehicle
is stationar y.This brak eapplication is cancel‐
led automaticall ywhen thev ehicle pulls
aw ay.
If an accident did no toccur ,the pre-em ptive
measures that we retake na re re versed. Sy
stem limitations
The sy stem will no tinitiat eanyaction in thef ol‐
lowing situations:
R when reve rsing
The sy stem will no tinitiat eanybraking applica‐
tion in thef ollowing situations:
R whils tdriving
or
R when entering or exitin gap arkin gspace
while using ActiveP arking Assist Occupant saf
ety45

Child
renint hevehicle Note
sont he saf etransportation of children &
WARNING Risk of accident and inju ry
due tochildren lef tunat tende dint he
ve hicle
If yo ul eave children unat tende dint hevehi‐
cle, they ma ybea bletos etthev ehicle in
motion, fore xamp leby:
R Releasing thep arking brake.
R Shifting thet ransmission out of park
position j.
R Startin gthe engine.
In addition, they ma yoperat evehicle equip‐
ment. #
Neverlea ve children and animals unat‐
te nde dint hevehicle. #
When leaving thev ehicle, alw ayst ake
th ek eywit hyou and loc kthe vehicle.
This also applies tomobil ephones if the
"Digital Car Keyint he smartphone" function is activated via
theM ercedes
me connect weba pp. &
WARNING Thisp oses an increased risk
of deat hduetoheat strokeorexposure
to cold in thev ehicle
If persons –particularly children –expe ri‐
enc eprolonged exposur etoextremely high
or lo wtemperatures, this poses arisk of
inju ryor eve nfatal injur y. #
Neverlea ve anyone –p articularly chil‐
dren –unat tende dint hevehicle. &
WARNING Risk of bu rnsw hen thec hild
seat is exposed todirect sunlight
If th ec hild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf ferb urns on these parts,
particularly on me tallic parts of thec hild
re stra int sy stem. #
Alw aysm akes uret hat thec hild
re stra int sy stem is no texpose dto
direct sunlight. #
Protect it wit hablanket,for example. #
Ifth ec hild restra int sy stem has been
ex posed todirect sunlight ,allowitto
cool befor esecu ring achild int oit. #
Neverlea ve children unat tende dint he
ve hicle. To
impr oveprotection forc hildren younger than
12 yearso ld or unde r1.50 minh eight,
Mercedes-Benz recommends youo bse rvet he
fo llowing information:
R Onlysecur echildren using achild restra int
sy stem whic hisappropriat etothe height,
ag ea nd weight of thec hild and suitable for
Mercedes-Benzv ehicles. Be suretoobserve
th ei nstruction sfor cor rect us eoft hechild
re stra int sy stem.
R Alw aysi ns tallac hild restra int sy stem on a
re ar seat if possible.
R Onlyuse thef ollowing securing sy stems for
ch ild restra int sy stems: 46
Occupant saf ety

-
thes eat belt sy stem
- theI SOFIX or i-Siz emounting brac kets
- theT op Tether anchorages
R The manufacturer's ins tallation instructions
fo rt he child restra int sy stem.
R The warning labels in thev ehicle interior and
on thec hild restra int sy stem. &
WARNING Risk of inju ryor deat hcaused
by incor rect ins tallation of thec hild
re stra int sy stem
If th ec hild restra int sy stem is incor rectly
ins talled on asuitable seatin gposition, it
canno tperform its intended pr otectiv efunc‐
tion.
The child canno tberestrained in thee vent of
an accident, heavy braking or asudden
ch ang eofd irection. #
Alw aysc ompl ywitht he manufacturer's
ins tallation instructions fort he child
re stra int sy stem and its cor rect use. #
Makesur ethat thee ntir ebase of the
ch ild restra int sy stem alw aysr ests on
th es itting sur face of thes eat. #
Neverp lace objects under or behind
th ec hild restra int sy stem, e.g. cush‐
ions. #
Alw aysu sechild restra int sy stems with
th eo riginal co verd esigned fort hem. #
Alw aysr eplace damaged co vers with
ge nuine co vers. &
WARNING Risk of accident caused by
incor rectl yins talled child restra int sys‐
te ms
If th ec hild restra int sy stem is no tcorrectly
ins talled or secured, it could release in the
ev ent of an accident, sudden braking or a
sudden chang eind irection.
The child restra int sy stem could be flung
aroun dand hit vehicle occupants. This poses
an increased risk of injur yorevend eath! #
Alw aysi ns tallch ild restra int sy stems
cor rectl y,eve nw henn otin use. #
Alw aysc ompl ywitht he child restra int
sy stem manufacturer's ins tallation
instructions. &
WARNING Risk of inju ryor deat hcaused
by theu se of damaged child restra int
sy stems
Child restra int sy stems or their retainin gsys‐
te ms that ha vebeen subjec tedtoal oad in
an acciden tmaythen no tbea bletoper form
th eir intended pr otectiv efunction.
The child canno tberestrained in thee vent of
an accident, heavy braking or asudden
ch ang eofd irection. #
Alw aysr eplace child restra int sy stems
immediatel ythat ha vebeen damaged or
in vo lved in an accident. #
Have thes ecuring sy stems fort he child
re stra int sy stems checkedataq ualified
specialis tworks hop befor einstalling a
ch ild restra int sy stem again. Occupant saf
ety47