2015 MERCEDES-BENZ C-CLASS COUPE airbag

after an accident. Tak
ethisi ntoa ccount, par-
ticularly if aseat belt tensioner was triggered or
an airbag was deployed.
An electric motor is used by PRE-SAFE ®
to trig-
ger th etightening of th eseat belt in hazardous
situations .This procedure is reversible.
If th ebelt tensioners are triggered or an airbag is
deployed, you will hear abang ,and asmall
amoun tofpowder may also be released. The
6 restraint system warning lamp light sup.
Only in rar ecases will th ebang affect your hear-
ing .Ing eneral, th epowder released is no thaz-
ardous to healt hbut may caus eshort-term
breathin gdifficulties to person ssufferin gfrom
asthma or other pulmonar yconditions. Provided
it is safe to do so, you shoul dleave th evehicle
immediately or open th ewindow in orde rtopre-
ven tbreathin gdifficulties.
Operation During th
efirst stage of acollision ,the restraint
system control unit evaluates important physi-
cal dat arelating to vehicle deceleratio noraccel-
eration ,suc ha s:
R duration
R direction
R intensity
Based on th eevaluation of this data, the
restraint system control unit trigger sthe seat
belt tensioners in th eeven tofah ead-on or rear
collision.
As eat belt tensioner can only be triggered if:
R thei gnition is switched on
R thec omponent softherestraint system are
operational. You can fin dfurther information
under: "Restrain tsystem warning lamp"
(Y page 40)
R theb elt tongue has engaged in th ebelt buckle
of th erespectiv efront seat
The seat belt tensioners in th erear compart-
men tare triggered independently of th elock
status of th eseat belts.
If th erestraint system control unit detect sahigh
severit yaccident, in certain head-on collisions,
additional component softherestraint system
are deployed independently of each other:
R fron tairbag sand driver' skneebag
R windowbag, if th esystem determine sthat
deploymen tcan offer additional protection to
that provided by th eseat belt On vehicle
swith th eautomatic front-passenger
fron tairbag deactivatio nsystem: dependin gon
th ep erson in th efront-pa ssenger seat ,the
front-passenger fron tairbag is either disable dor
enabled. The front-passenger fron tairbag can
only be deployed in an acciden tifthe
PASSENGER AI RBAG ON indicator lamp is lit.
Observ ethe informatio nonthePASSENGER AIR
BA Gindicator lamps (Y page 40).
Your vehicle has two-stag efront airbags. In the
first deploymen tstage, th efront airbag is filled
with propellan tgas to reduc ethe risk of injuries.
The fron tairbag is fully deployed if th esecond
deploymen tstage is activated within afew mil-
liseconds.
The activation threshold for th eseat belt ten-
sioners and airbag sisdetermine dbased on the
evaluation of th evehicle's rat eofdeceleration
or acceleratio natvarious points in th evehicle.
This process is pre-emptive in nature. The trig-
gering/deployment process shoul dtakep lace
in good tim eatthestart of th ecollision.
The rat eofvehicle deceleratio noracceleration
and th edirection of th eforce are essentially
determine dby:
R thed istribution of forces durin gthe collision
R thec ollision angle
R thed eformatio ncharacteristics of th evehicle
R thec haracteristics of th eobject with which
th ev ehicle has collided
Factors whic hcan only be seen and measured
after acollision has occurre ddonotplay adeci-
sive role in th edeploymen tofanairbag,nor do
they provide an indication of airbag deployment.
The vehicle may be deformed significantly with-out an airbag bein gdeployed. This is th ecaseif
only part swhicha re relatively easily deformed
are affected and th erateofd eceleratio nisnot
high .Conversely, an airbag may be deployed
even though th evehicle suffers only minor
deformation. This is th ecasei f, for example,
ver yrigidv ehicle part ssuchasl ongitudinal body
members are hit ,and sufficient deceleration
occurs as aresult.
If th erestraint system control unit detect saside
impact, th eapplicable component softhe
restraint system are activated independently of
each other.
R Sidebags on th eside on whic hanimpact
occurs, independen tfromt heseat belt ten-
sioner and seat belt usage
Vehicle swith th eautomatic front-passenger
airbag deactivatio nsystem: th esidebag on Occupant safety
53Safety Z

the front-passenge
rsided eploys under the
following conditions:
- an occupant is detecte donthe front-
passenge rseator
- the belt tongue is engaged in the belt
buckle of the front-passenge rseat
R Windowbag on the side on which an impact
occurs, independent of seat belt usag eand
regardles sofwhether the front-passenger
seat is occupied
R Fron tseatb eltt ensioners ,ifthe system
determine sthatd eployme nt can offer addi-
tional protection for the vehicl eoccupants in
thi ss ituation
i Not al
lairbags ar edeployed in an accident.
The different airba gsystems work independ-
entl yofe acho ther.
How the airba gsystemw orks is determined
by the severity of the accident detected,
especiall ythe vehicl edeceleratio noraccel-
eration, and the apparent typ eofaccident:
R frontal collision
R side impact PRE-SAFE
®
(anticipatory occupant
protection)
Introduction PRE-SAFE
®
take spre-emptive measures to pro-
tect occupants in certain hazardous situations.
Important safety notes !
Make sure tha
tthere ar enoobjects in the
footwell or behind the seats .There is arisk
tha tthe seats and/or the objects could be
damage dwhenP RE-SAFE ®
is activated.
Although your vehicl eisequippe dwithaP RE-
SAFE ®
system, the possibility of injury in the
event of an accident cannot be rule dout.A lways
adap tyou rd rivin gstyle to suit the prevailing
roa dand weather conditions and maintain a
safe distance fro mthe vehicl einfront. Drive
carefully. Function PRE-SAFE
®
intervenes:
R in emergency braking situations, e.g .when
BAS is activated
R in critica ldrivin gsituations, e.g .whenp hysi-
cal limits ar eexceeded and the vehicl eunder-
steers or oversteers severely
R vehicles with the Drivin gAssistance package:
when adriver assistance syste mintervenes
powerfull yorthe rada rsen sorsystemd etects
an imminent dange rofcollision in certai nsit-
uations
PRE-SAFE ®
take sthe following measures
depending on the hazardous situatio ndetected:
R the front seat belts ar epre-tensioned.
R if the vehicl eskids ,the side windows and the
panorama sliding sunroo fare closed.
R vehicles with the memory functio nfor the
front-passenge rseat: the front-passenger
seat is adjusted if it is in an unfavourable
position.
If the hazardous situatio npasse sw ithou tresult-
ing in an accident, PRE-SAFE ®
slackens the belt
pre-tensioning .All setting smadebyP RE-SAFE ®
can the nbereversed.
If the seat belt pre-tensioning is not reduced:
X Mov ethe seat backrest or seat back slightly
when the vehicl eisstationary.
Sea tbeltp re-tensioning is reduce dand the
locking mechanis misreleased.
The seat-bel tadjustment is an integra lpartof
the PRE-SAFE ®
convenience function. Informa-
tio na bout the convenience functio ncan be
found under "Belt adjustment" (Y page 44). PRE-SAFE
®
PLUS (anticipatory occu-
pant protection PLUS)
Introduction PRE-SAFE
®
PLU Siso nlya vailable in vehicles
with the Drivin gAssistance package.
Using the rada rsensors ystem, PRE-SAFE ®
PLU Sisa bletod etect tha tahead-o norrear-end
collision is imminent. In certai nhazardous sit-
uations, PRE-SAFE ®
PLU Stake spre-emptive
measures to protect the vehicl eoccupants. 54
Occupant safetySafety

Important safety notes
The intervention of PRE-SAFE
®
PLU Scannot
preven tanimminent collision.
The driver is no twarned before th eintervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLU Sdoes no tintervene:
R if th evehicl eisr eversing
R when th evehicl eist owingat railer and there
is ar iskofar ear-end collision
When driving ,orwhen parking or exiting apark-
ing spac ewitha ssistanc efromA ctiveParking
Assist ,PRE-SAFE ®
PLU Swill no tapply the
brakes.
Function PRE-SAFE
®
PLU Sintervenes in certain situa-
tion sift heradar sensor system detects an
imminent head-on or rear-end collision.
PRE-SAFE ®
PLU Stakes th efollowin gmeasures
depending on th ehazardous situation detected:
R if th eradar sensor system detects that a
head-on collision is imminent ,the seat belts
are pre-tensioned
R if th eradar sensor system detects that arear-
en dc ollision is imminent:
- ther ear hazard warning lamp sare activa-
te da nd flas hatah igher frequency
- theb rak epressur eisincreased if th edriver
applie sthe brakes when th evehicl eiss ta-
tionary
- thes eat belt sare pre-tensioned
The PRE-SAFE ®
PLU Sbraking application is can-
celled:
R if th eaccelerato rpedal is depressed when a
gear is engaged
R if th eriskofac ollision passes or is no longer
detected
R if DISTRONI CPLUSindicates an intention to
pull away
If th ehazardous situation passes without result-
ing in an accident, th eoriginal setting sare
restored. Automati
cmeasures after an acci-
dent
Immediately after an accident, th efollowing
measures are implemented, depending on the
typ eand severity of th eimpact:
R theh azard warning lamp sare activated
R thee mergenc ylighting is activated
R thev ehicl edoor sare unlocked
R thef ront side windows are lowered
R vehicles wit hamemory function :the electri-
call yadjustable steering whee lisraised
R thee ngineiss witched off and th efuel supply
is cut off
R vehicles wit hthe Mercedes-Ben zemergency
call system: automatic emergenc ycall Children in th
evehicle Important safety notes
Acciden tstatistics sho wthatc hildren secured
in th erear seat sare safer than children secured
in th efront seats. Fo rthisr eason ,Mercedes-
Ben zstrongly advises that you fit achild
restrain tsystem on arear seat .Children are
generally bette rprotected there.
If ac hild younger than twelve years old and
under 1.50 minh eight is travellin ginthe vehi-
cle:
R always secur ethe child in achild restraint
system suitable for Mercedes-Ben zvehicles.
The child restraint system must be appropri-
ate to the age, weight and size of the child.
R be sure to observe the instructions and safety
notes in this section in addition to the child
restraint system manufacturer' sinstallation
instructions.
R always pay attention to the instructions and
safet ynotes on the automatic co-driver's
front airbag deactivation system (Y page 47). Children in thev
ehicle
55Safety Z

X
Move head restraint :upwards.
X Fold up cover ;of Top Tether anchorage =.
X Fit the ISOFIX child restraint system with Top
Tether. Always comply with the child restraint system manufacturer's installation instruc-
tions when doing so. X
Route Top Tether belt Aunder head
restraint :between the two head restraint
bars.
X Hook Top Tether hook ?of Top Tether belt
A into Top Tether anchorage =.
Make sure that Top Tether belt Ais not twis-
ted.
X Tension Top Tether belt A.Always comply
with the child restraint system manufactur-
er's installation instructions when doing so.
X Fold down cover ;of Top Tether anchorage
=.
X If necessary, move head restraint :back
down again slightly. Make sure that you do
not interferew ith the correct routing of Top
Tether belt A. Child restraint system on the front-
passenger seat
General notes Accident statisticss
how that children secured
in the rear seats are safer than children secured
in the front seats. For this reason, Mercedes-
Benz strongly advises that you fit achild
restraint system on arear seat.
Vehicles with the automatic co-driver's front air-
bag deactivation system: if it is absolutely nec-
essary to fit achild restraint system to the co-
driver's seat, always observe the notes on the
"Automatic co-driver's front airbag deactivation system" (Y page 47). You can thus avoid the risks that could arise as
ar esult of:
R ac hild restraint system that is not detected
by the automatic co-driver's front airbag
deactivation system
R the unintentional disabling of the co-driver's
front airbag
R the unsuitable positioning of the child
restraint system, e.g. too close to the dash-
board. Please observe the warning notice on the co-
driver's sun visor, see the illustration. G
WARNING
If you secure achild on the co-driver's seat in
ar earward-facing child restraint system and
the PASSENGER AIR BAG ON indicator lamp
lights up, the co-driver's airbag could be
deployed in the event of an accident. The child could be struck by the airbag. There is an
increased risk of injury, possibly even fatal.
In this case, always ensure that the co-driver's
airbag is disabled. The PASSENGER AIRBAG
OFF indicator lamp must light up.
NEVERu searearward-facing child restraint on a
seat protected by an ACTIVE AIRBAG in front of
it, DEATH or SERIOUS INJURY to the CHILD can occur.
If the PASSENGER AIRBAG ON indicator lamp is
lit, the co-driver's front airbag is enabled
(Y page 40). Children in the vehicle
59Safety Z

Vehicles withou
tautomatic co-driver's
fron tairbag deactivatio nsystem If the co-driver'
sseatofy ourv ehicl eisn ot
equipped with an automatic co-driver' sfront air-
ba gd eactivation system ,thisisi ndicated by a
specia lsticker. The sticker is affixe dtothe side
of the dashboard on the co-driver' sside. The
sticker is visible when yo uopent he co-driver's
door.
Never fit arearward-facing child restraint sys-
tem to the co-driver' sseatint hisc ase
(Y page 60).
Observe the following informatio nunder "Rear-
ward-facing child restraint system "and
"Forward-facing child restraint system "and on
suitabl epositioni ng of the child restraint system
(Y page 60).
Rearward-facin gchild restrain tsystem If it is absolutely necessary to fit
arearward-
facing child restraint system to the co-driver's
seat, yo umusta lway smakes uret hatthe co-
driver' sfront airba gisdeactivated. The co-driv-
er' sfront airba gisonlyd isable difthe
PASSENGER AIRBAG OFF indicator lamp is lit
continuously (Y page 40).
Alway sobserve the informatio nabout suitable
positioning of the child restraint system
(Y page 60 )asw ellast he child restraint sys-
tem manufacturer's installatio nand operating
instructions.
Forward-facin gchild restrain tsystem If it is absolutely necessary to secure
achild in a
forward-facing child restraint system on the co- driver' sseat, yo umusta lway smove the co-driv-
er' sseatasfar back as possible. Fully retract the
sea tcushion length. The base of the child
restraint system must li efully on the co-driver's sea
tcushion. The backres tofthe child restraint
system must li easflata gain st the co-driver's
sea tbackres tasp ossible. The child restraint
system ma ynot touch the roo forbeputunder
strain by the hea drestraint. Adjust the angle of
the sea tbackres tand the hea drestraint posi-
tio na ccordingly. Alway smakes uret hatthe
shoulde rbelts tra pisc orrectl yrouted from the
vehicl ebelts ashg uide to the shoulde rbelt
guid eont he child restraint system .The shoul-
de rb elts tra pm ustber outed forward sand
downward sfrom the vehicl ebelto utlet. If nec-
essary ,adjus tthe vehicl ebelts ashg uide and
the co-driver' sseata ccordingly.
Alway sobserve the informatio nabout suitable
positioning of the child restraint system
(Y page 60 )asw ellast he child restraint sys-
tem manufacturer' sinstallatio nand operating
instructions. Suitabl
epositionin gofthe child
restrain tsystem
Introduction Onl
ychild restraint system sapproved in accord-
ance with the ECE standards ECE R44 or ECE
R12 9(i-Size child restraint systems) are permit-
ted for us einthe vehicle.
"Universal" categor ychild restraint system scan
be recognised by thei rorange approval labe land
the text "Universal" or an "i-Size "label. 60
Children in the vehicleSafety

Suitability of the seats for attaching
abelt-secured child restraint system If you use
ababy car seat of category 0or0+orarearward-facing child restraint system of category
Ionar ear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch
the child restraint system.
If you use acategory I, forward-facing child restraint system, you should remove the head restraint
from the respective seat, if possible (Y page 106). The backrest of the child restraint system must,
as far as possible, lie flat against the backrest of the seat.
Make sure that the child's feet do not touch the front seat. If necessary, move the front seat forward slightly.
For certain child restraint systems in weight categories II or III, this can mean that the area of use is restricted. The maximum size settingoft he child restraint system is not possible due to possible
contact with the roof.
Always observe the notes in the "Childr estraint system" section (Ypage 56) and the child restraint
system manufacturer's installation instructions.
When you remove the child restraint system you must replace the head restraint sagain immediately
(Y page 105). All vehicle occupants must adjust their head restraint scorrectly before beginning the
journey.
Legend for the table:
XS eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in th e"Universal" categor ytha ta re approve dfor use in this
weigh tcategory.
UF Suitable for forward-facing child restraint systems that belon gtothe"Universal" categor yand
are approve dfor use in this weigh tcategory.
LS uitable for child restraint systems as recommended; see th e"Recommended child restraint
systems "table (Y page 64). Suitable for semi-universal child restraint systems if th evehicle
and th eseat are listed in th echild restraint system manufacturer' svehicle model list. Weigh
tcategory Front-passenger seat Rea
rseat Front-
passenger
front airbag enabled Front-
passenger
front airbag
deactivated 1 Left
,right 0
up to 10 kg X U, L U, L
0+
up to 13 kg X U, L U, L
I
9kgto18kg UF
,L U, L U, L
II
15 kg to 25 kg U, L U, L U, L
III
22 kg to 36 kg U, L U, L U, L
Suitabilit
yoftheseat sfor attaching ISOFIX child restraint systems If you use
ababy car seat of categor y0or0+orarearward-facing child restraint system of category
Ionar ear seat ,you must adjust th edriver' sorfront-pa ssenger seat so that th eseat does no ttou ch
th ec hild restraint system.
1 The vehicle is equipped wit hanautomatic front-passenger fron tairba gdeactivation system. The PASSENGER
AI RB AG OFFindicator lamp must be lit. 62
Children in th
evehicleSafety

Correct driver's seat position
G
WARNING
You coul dlose control of th evehicle while
driving if you:
R adjust th edriver' sseat ,steering wheel or
mirrors
R fasten th eseat belt
Ther eisar iskofana ccident.
Adjust th edriver' sseat ,head restraint ,steer-
ing wheel and mirror sand fasten your seat
belt before starting th eengine. Observ
ethe followin gwhen adjusting steering
wheel :,seat belt ;and driver' sseat =:
R you are as far away from th edriver' sairbag as
possible
R you are sittin ginanormalupright position
R your thighs are slightly supported by th eseat
cushion
R your legs are no tentirely stretched and you
can depress th epedals properly
R theb ack of your head is supported at eye level
by th ecentr eoft hehead restraint
R you can hold th esteering wheel wit hyour
arm sslightly bent
R you can mov eyour legs freely
R you can see all th edisplays in th einstrument
cluste rclearly R
you should have agood overview of traffic
conditions
R thes eat belt is pulled snugly against th ebody
and must be routed across th ecentr eofy our
shoulder and across your hips in th epelvic
area
Further related subjects:
R Manual and electrical seat adjustment
(Y page 104)
R Electrical seat adjustmen t(Ypage 104)
R Adjusting th esteering wheel mechanically
(Y page 110) or electricall y(Ypage 111).
R Fastenin gthe seat belt correctly (Y page 43).
R Adjustin gthe rear-view mirror and exterior
mirror s(Ypage 113).
R You can store th eseat ,steering wheel ,exte-
rior mirror and head-up display settings with
th em emory function (Y page 116). Seats
Important safety notes
G
WARNING
If childre nadjust th eseats, they could
become trapped, especiall yiftheya re unat-
tended. Ther eisariskofi njury.
When leaving th evehicle ,always tak ethe key
wit hyou and loc kthe vehicle .Never leave
childre nunattende dinthevehicle.
The seat scan still be adjusted when there is no
ke yint heignition lock. G
WARNING
When adjusting aseat ,you or another vehicle
occupan tcoul db ecome trapped by th eguide
rail of th eseat ,for instance. Ther eisariskof
injury.
Mak esure that no on ehas any part of their
body within th esweep of th eseat when
adjusting it.
Observ ethe safety note son"Airbags"
(Y page 44) and "Children in th evehicle"
(Y page 55). 102
SeatsSeats, steerin
gwheel and mirrors

Adjusting th
eheadr estraints electri-
cally X
To adjust th eheadr estrain theight: slide
th es witch for th ehead restrain tadjustment
(Y page 104) up or down in th edirection of the
arrow.
Vehicles wit hAMG Performance Seat: the
height of th ehead restraints canno tbeadjus-
ted.
Adjusting th erears eath eadr estraint
height X
If th ehead restrain tisfully lowered, it is nec-
essary to press release catch :.
X To raise: pull thehead restrain tuptothe
desired height.
X To lower: press release catch :and push
th eh ead restrain tdown until it is in the
desired position.
Fitting and removing rea rhead
restraints X
Releas ethe rear seat backrest and fol dit
slightly forward s(Ypage 310).
X To remove: pull thehead restrain tuptothe
stop.
X Press release catch :and pull th ehead
restrain tout of th eguides.
X To refit: insert thehead restrain tsothatthe
notches on th ebar are on th eleftw hen
viewed in th edirection of travel.
X Push th ehead restrain tdown until you hear it
engage in position.
X Fold bac kthe rear seat backrest until it
engages. Folding th
efront-seat backrests
forward/back
Important safety notes G
WARNING
If th ebackrest is no tengaged, it could fold
forward sduring abraking manoeuvre or in the
event of an accident, for example. The seat
backrest will then push th evehicl eoccupant
against th eseat belt .The seat belt cannot
protect as intended and could result in addi-
tional injury. This poses an increased ris kof
injury.
Befor eeachjou rney, mak esuret ha tthe back-
res tengage sfully as described. G
WARNING
You could lose control of th evehicl ewhile
drivin gifyou:
R adjust th edriver's seat ,steering whee lor
mirror
R faste nthe seat belt.
There is ariskofana ccident.
Adjus tthe driver's seat ,steering whee lor
mirror and faste nthe seat belt before starting
th ee ngine. G
WARNING
When adjusting aseat ,you or another vehicle
occupant could become trapped by th eguide
rail of th eseat ,for instance .There is ariskof
injury.
Mak esuret hatnoo nehas any part of their
body within th eswee poft heseat when
adjusting it.
Observ ethe safet ynotes on "Airbags"
(Y page 44) and "Children in th evehicle"
(Y page 55). 106
SeatsSeats
,steering wheel and mirrors