seat adjustment MERCEDES-BENZ C-Class COUPE 2017 CL205 Owner's Manual

Fastening seat belts
Observethe safet ynotes on th eseat belt
(Ypage 43 )and the notes on correct us eofseat
belts (Ypage 44).
GWARNING
If the seat-belt extender is extended during
the journey ,the sea tbeltisn ot fitte dproperly
on the body .The sea tbeltc an then no longer
perfor mits intende dprotective function. This
poses an increased ris kofinjury or eve nfatal
injury.
Alway smakes uret hatt he seat-belt extender
is retracted during ajourney.
The seat-belt extender for the driver and front
passenger helps yo ufasten your sea tbelt. Seat-
belt extender =is extended when the respec-
tive door is closed and the SmartKey is turne dto
position 1or 2in the ignition lock.
Yo uc an also extend seat-belt extender =with
seat-belt extender button ?.
XPress seat-belt extender button ?.
Seat-belt extender =extends.
Seat-belt extender =is retracted agai nif:
Rthe belt tongu eisengaged in the sea tbelt
buckle.
Rthe belt tongu eisnot engaged in the sea tbelt
buckle within6 0seconds.
In thisc ase, youcan extend seat-belt
extender =again. Press seat-belt extender
button ?again.
Rthe respective door is opened.
Rthe SmartKey is turne dtoposition 0in the
ignition lock.
Ryo ur elease the sea tbackres tand fol ditfor-
wards.
Rthe front-passenger sea tisu noccupie dafter
approximatelyf ives econds.
If yo upress seat-belt extender button ?after
this, seat-belt extender =will not extend.
Basic illustration
XAdjust the sea t(Ypage 96).
The sea tbackres tmustbeinana lmostv er-
tica lposition.
XPull the sea tbelts moothl yfrom the belt outlet
and engage belt tongue ;into belt
buckle :.
The sea tbeltont he driver’ sseata nd the
front-passenger sea tmaybe tightene dauto-
matically, see "Belt adjustment"
(
Ypage 46).
XIf necessary,p ullu pwar ds on the shoulder
section of the sea tbelttot ighten the belt
across your body.
Occupant safety45
Safety
Z

All seatbelts except the driver's sea tbelta re
equipped with aspecia lsea tb eltr etractor to
securel yfasten child restraint system sinthe
vehicle. Further informatio ncan be found under
"Special sea tbeltr etractor" (
Ypage 57).
Releasin gseatb elts
!Make sure thatt he seatbeltisf ullyrolle dup.
Otherwise, the sea tbeltorb eltt ongu ewillb e
trappe dinthe door or in the sea tmechanism.
Thi scould damage the door, the door trim
panel and the sea tbelt. Damaged sea tbelts
can no longerf ulfill thei rprotective function
and must be replaced .Visit aquali fied spe-
cialist workshop.
XPress the release button in the belt buckle,
hol dthe belt tongu efirmly and guid ethe belt
back.
Seat belt adjustment
The seat-belt adjustment is an integra lparto f
the PRE-SAFE®convenience function. Thi sfun c-
tio na djusts the driver's and front-passenger
sea tbelttot he uppe rbodyoft he occupants.
The belt strapist ightenedslightly when:
Rthe belt tongu eisengaged in the buckle and
Rthe ignition is switched on
The seat-belt adjustment will appl yacertain
retractio nforc eifa ny slack is detecte dbetween
the vehicl eoccupant and the sea tbelt. Do not
hol dontot he seatbeltt ightlyw hileit is adjust-
ing.
Yo uc an activate and deactivate the seat-belt
adjustment functio nusing the multimedia sys-
tem. Informatio nonactivating and deactivating
the seat-belt adjustment functio ncan be found
in the Digita lOperator' sManualorint he sepa-
rate multimedia system operating instructions.
Bel twarning fort he driver and front
passenger
The 7 seatbeltw arning lamp in the instru-
ment cluster is areminder thata llvehicl eoccu-
pants must wear thei rseatb elts .Itm aylight up
continuously or flash. In addition, ther emaybe
aw arning tone.
Regardless of whethe rthe driver's sea tbelth as
already been fastened, the 7seatbeltw arn-
ing lamp lights up for sixs econdseach timethe
engine is started. If th edoorsa re closed and the driver'sorf
ront-passenger seat belt has not
been fastened, the 7seat belt warning lamp
lightsupa gain after th esix seconds. As soon as
th ed river'sa nd front-passenger seat beltsa re
fastene dorad oor is opened again,t he7
seat belt warning lamp goes out.
If th edriver'ss eat belt is no tfastene dafter the
engine is started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once th edriver'ss eat belt is fas-
tened.
If th evehicle's speede xceeds 15 mph
(25 km/h) once and th edriver'sa nd front-
passenger seat beltsa re notfastened, awarning
tone sounds. Awarning tone also sounds with
increasing intensity for 60 seconds or until the
driver or frontp assenger have fastene dtheir
seat belts.
If th edriver or frontp assenger unfasten their
seat beltsd uringthejourney, th eseat belt warn-
ing is activ
ated again.
Air bags
Introduction
The installatio npointofana ir bag can be rec-
ognize dbytheAIRB AG symbol.
An air bag complement sthe correctly fastened
seat belt.Itisnos ubstitutefor th eseat belt.T he
air bag provides additional protection in appli-
cable accidents ituations.
Not all air bags are deployed in an accident. The
differenta ir bag systems function independ-
ently from onea nother (
Ypage 53).
However ,nosystem availabl etoday can com-
pletely eliminat einjuries and fatalities.
It is also no tpossible to rule out arisk of injury
caused by an air bag due to th ehigh speeda t
whicht heair bag must be deployed.
Important safety notes
GWARNING
If you do no tsit in th ecorrec tseat position,
th ea ir bag canno tprotect as intended and
coul deven caus eadditional injury when
deployed. This posesani ncreased risk of
injury or even fatal injury.
46Occupant safety
Safety

Problems with the Occupant Classification System (OCS)
Be sure to observe the notes on "System self-test"(Ypage 51).
ProblemPossible causes/consequences andMSolutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult oraper-
son of astature corre-
sponding to that of an
adult.The classification of the person on the front-passenger seat is incor-
rect.
XMake sure the conditionsf orac orrect classification of the person
on the front-passenger seat are met (Ypage 49).
XIf the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used.
XHave OCS checked as soon as possible at an authorized Mercedes- Benz Center.
The PASSENGER AIR
BAG OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger seat
is:
Runoccupied
Roccupied with the
weight of achild up to
twelve months old in a
child restraint system
OCS is malfunctioning.
XMake sure there is nothin gbetween the seat cushion and the child
seat.
XMake sure that the entire base of the child restraint system rests on
the seat cushion of the front-passenger seat. The backrest of the
forward-facing child restraint system must lie as flat as possible
against the backrest of the front-passenger seat. If necessary,
adjust the position of the front-passenger seat.
XMake sure that the seat cushion length is fully retracted.
XWhen installing the child restraint system, make sure that the seat
belt is tight. Do not pull the seat belt tight using the front-passenger seat adjustment .This could result in the seat belt and the child
restraint system being pulled too tightly.
XCheck for correct installation of the child restraint system.
Make sure that the head restraint does not apply aload to the child
restraint system. If necessary, adjust the head restraint accord-
ingly.
XMake sure that no object sare applying additional weight onto the
seat.
XIf the PASSENGER AIR BAG OFF indicator lamp remains off and/or
the PASSENGER AIR BAG ON indicator lamp lights up, do not install ac hild restraint system on the front-passenger seat. It is recom-
mended that you install the child restraint system on asuitable rear
seat.
XHave OCS checked as soon as possible at an authorized Mercedes- Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag has
been deployed. There is arisk of injury.
Do not touch the air bag parts. Have a
deploye dair bag replaced at aqualified spe-
cialist workshop as soon as possible.
GWARNING
Ad eployeda ir bag no longer offers any pro-
tection and cannot provide the intended pro-
Occupant safety53
Safety
Z

Function
PRE-SAFE®intervenes:
Rin emergenc ybraking situations, e.g. when
BA Sisa ctivated
Rin critical driving situations, e.g. when physi-
cal limits are exceeded and th evehicl eunder-
steer soro versteer sseverely
Rvehicles wit hthe Drivin gAssistanc epackage:
when adriver assistanc esystem intervenes
powerfully or th eradar sensor system detect s
an imminent danger of collision in certai nsit-
uation s
PRE-SAF E
®takes thefollowin gmeasures
depending on th ehazardous situation detected:
Rthef ront seat belt sare pre-tensioned.
Rif th evehicl eskids, th eside windows and th e
panoram aroofw ithp ower tilt/slidin gpanel
are closed.
Rvehicles wit hthe memory function for th e
front-passenger seat :the front-passenger
seat is adjusted if it is in an unfavorable posi -
tion .
If th ehazardous situation passes without result -
ing in an accident, PRE-SAF E
®slackens thebelt
pre-tensioning .All setting smade by PRE-SAF E®
can then be reversed.
If theseat belt pre-tensioning is no treduced:
XMov ethe seat backrest or seat bac kslightly
when th evehicl eiss tationary.
The seat belt pre-tensioning is reduce dand
th el ockin gmechanism is released.
The seat-belt adjustmen tisanintegral part of
th eP R
E-SAF E®convenience function .You will
fin dinformation on th econveni ence function
under "Belt adjustment" (
Ypage 46).
PRE-SAFE®PLUS (anticipatory occu-
pant protection system PLUS)
Introduction
PRE-SAF E®PLUSiso nlya vailable in vehicles
wit hthe Drivin gAssistanc epackage.
Usin gthe radar sensor system, PRE-SAF E
®
PLUSisa ble to detect that ahead-on or rear-end
collision is imminent .Incertainhazardous sit -
uations, PRE-SAF E
®PLUStakes pre-emptive
measures to protect th evehicl eoccupants.
Important safety notes
The intervention of PRE-SAF E®PLUScanno t
preven tanimminent collision .
The driver is no twarned about th eintervention
of PRE-SAF E
®PLUS.
PRE-SAF E®PLUSdoes no tinterven eifthevehi-
cle is backin gup.
When driving ,orwhen parking or exiting apark -
ing spac ewitha ssistanc efromA ctiveParking
Assist ,PRE-SAF E
®PLUSwill no tapply th e
brakes.
Function
PRE-SAF E®PLUSintervenes in certai nsitua-
tion sift heradar sensor system detect san
imminent head-on or rear-end collision .
PRE-SAF E
®PLUStakes th efollowin gmeasures
depending on th ehazardous situation detected:
Rif th eradar sensor system detect sthata
head-on collision is imminent ,the seat belt s
are pre-tensioned.
Rif th eradar sensor system detect stha tar ear-
en dc ollision is imminent :
-theb rak epressur eisincreased if th edriver
applie sthe brakes when th evehicl eiss ta-
tionary.
-th es eat belt sare pre-tensioned.
The PRE-SAF E®PLUSbraking application is can -
celed:
Rif th eaccelerato rpedal is depressed when a
gear is engage d
Rif theriskofac ollision passes or is no longer
detected
Rif 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 efollowin g
measures are implemented, depending on th e
typ eand severit yoftheimpact :
Rtheh azard warning lamps are activated
Rthee mergenc ylighting is activated
Rthev ehicl edoor sare unlocked
56Occupant safety
Safety

GWARNING
You coul dlose control of you rvehicl eifyou do
the following while driving:
Radjust the driver's seat, headr estraint,
steering whee lormirrors
Rfasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, headr estraint, steer-
ing whee land mirror and fasten you rseat belt
before starting the engine.
GWARNING
If you adjust the seat height carelessly, you or
other vehicleo ccupants couldbetrappe dand
thereby injured .Childre ninparticular could
accidentally press the electrica lseat adjust-
ment buttons and become trapped. There is a
risk of injury.
Whil emoving the seats, make sure that your
hands or other body parts do not get under the
leve rassembly of the seat adjustment sys-
tem.
GWARNING
If the headr estraints are not installed or not
adjusted correctly, they cannot providep ro-
tection as intended. There is an increased risk
of injury in the heada nd neck area,e.g. in the
event of an accident or when braking.
Always drive with the headr estraints instal-
led .Before driving off, make sure for every
vehicleo ccupant that the center of the head
restraint supports the back of the heada t
about eye level.
GWARNING
The seat beltd oes not offer the intended level
of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slid eunderneath the seat belta nd sustain
abdomen or neck injuries, for example. This
posesani ncreased risk of injury or even fatal
injury.
Adjust the seat properly before beginning
you rjourney .Always ensure that the backrest
is in an almost vertical position and that the
shoulde rsection of you rseat beltisr outed
across the center of you rshoulder.
!To avoi ddamage to the seats and the seat
heating, observe the following information:
Rkeep liquid sfrom spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should als onot be used to dry the seats.
Rclea nthe seat covers as recommended;
see "Interio rcare".
Rdo not transport heav yloads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nail sortools. The
seats should only be occupied by passen-
gers, if possible.
Rwhen the seat heating is in operation, do
not cover the seats with insulating materi-
als ,e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
!Make sure that there are no objects in the
footwel lunder or behind the seats when mov-
ing the seats back. There is arisk that the
seats and/or the objects coul dbedamaged.
iThe rear-compartment head restraints can
be removed (Ypag e99).
Vehicles without the through-loading feature:
the head restraints cannot be removed from
the rear compartment seats.
For more information, contact aqualified spe-
cialist workshop.
iRelated topic:
RRea rbench seat through-loading feature
(Ypag e96)
Seats97
Seats, steering wheel and mirrors
Z

Folding thefront seat backrests
forward/back
Important safety notes
GWARNIN G
If th ebackrest is no tengaged, it could fol d
forwards durin gabraking maneuve rorinthe
event of an accident, for example .The seat
backrest will then push th evehicl eoccupant
against th eseat belt .The seat belt can no
longer offer th eintended leve lofprotection
and could eve ncaus einjuries. Ther eisan
increased ris kofinjury.
Before eac hjou rney, mak esure that th eback-
res tengage sfully as described.
GWARNIN G
You could lose control of your vehicl eifyou do
th ef ollowin gwhile driving :
Radjust thedriver' sseat ,steering whee lor
mirror s
Rfastenthe seat belt
Ther eisar iskofana ccident.
Adjus tthe driver' sseat ,steering whee lor
mirror sand faste nyour seat belt before start -
ing th eengine.
GWARNIN G
When you adjust aseat ,you or other vehicl e
occupant scould become trapped ,e.g.ont he
seat guide rail. Ther eisariskofi njury.
Mak esure when adjusting aseat that no on e
has any body part sintheswee poft heseat .
Observ ethe safet ynotes on "Air bags "
(
Ypage 46 )and "Children in th eVehicle"
(Ypage 57) .
Folding th eseat backres tforward
Wit hthe EASY-ENTRY system, th eseat moves
forwards as soo nasyou foldthe backrest for -
wards and pull th eseat forwards horizontally.
This makes it easie rfor passenger stoget into
and out of th erear compartment.
The head restraint also lower sonvehicles wit h
electric seat adjustment.
XVehicles without memory function:
release th ehead restraint if necessar yand
push it down .
XUse seat release handle :and fol dthe back-
res tforwards until th eseat backrest engages.
XPush th eseat as far forwards as it will go.
XVehicles with memory function: use seat
release handle :and fol dthe backrest for -
wards as far as it will go.
The seat moves automatically to th eforemost
position .
Folding th eseat backres tback
XVehicles without memory function: push
th es eat backrest bac khorizontally until th e
seat reaches th eposition that was previously
set .
XFold th eseat backrest backwards until you
hear it engage .Dosoinasmoothmanner.
If th erear seat backrest is no tengaged, this
will be shown in th emultifunction display in
th ei nstrumen tcluster. Awarning tone also
sounds.
XAfte rthe seat backrest has been folded back,
check th eposition of th ehead restraint and
set it to th ecorre ct position .
XVehicles with memory function: swing
bac kthe seat backrest .
If th erear seat backrest is no tengaged, this
will be shown in th emultifunction display in
100Seats
Seats, steering wheel and mirrors

the instrument cluster.Awarning tone also
sounds.
The seat moves automaticall ytothe stored
position.
If the previous positio ncan no longe rbeset,e .g.
because of luggag einthe rear-compartment
footwell or after occupants have entered the
rear-compartment:
XUse seat release handle :agai nand return
the seat backrest to an upright position.
The seat locks in the new seat fore-and-aft
adjustment position.
Adjusting the 4-way lumbar support
:Raises the backrest contour
;Softens the backrest contour
=Lowers the backrest contour
?Hardens the backrest contour
Yo uc an adjus tthe contour of the front seat
backrests individually to provid eoptimum sup-
port for your back.
Adjusting the AM GPerformanc eSeat
To adjus tthe contour of the seat and for
improved latera lsuppo rt, yo ucan individually
adjus tthe front seats.
Adjusting the side bolsters of the seat cush-
ion
XTo narrow: press button :.
XTo broaden: press button;.
Adjusting the side bolsters of the seat back-
rest
XTo narrow: press button =.
XTo broaden: press button?.
Seat heatingand seat ventilation
Switchin gthe seat heatin gon/of f
GWARNING
Repeatedl yswitching on the seat heating can
cause the seat cushion and backrest pads to
become ver yhot. Th ehealth of persons with
limited temperatur esensitivity or alimit ed
ability to react to excessivel yhight empera-
tures maybea ffecte dort heym ayeve nsuffer
burn-like injuries. There is ariskofi njury.
Therefore, do not switch the seat heating on
repeatedly.
Seats101
Seats, steering wheel andmirrors
Z

Problems with the seat heating or seat ventilation
ProblemPossible causes/consequences andMSolutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation can be switched back on manually.
Steering wheel
Important safety notes
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint,s teer-
ing wheel and mirror and fasten your seat belt before startin gthe engine.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is arisk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock.
Adjusting the steering wheel man-
ually
:Release lever
;Adjustst he steering wheel height
=Adjuststhe steering wheel position (fore-
and-aft adjustment)
XPush release lever :down completely.
The steering column is unlocked.
XAdjust the steering wheel to the desired posi-
tion.
XPush release lever :up completely.
The steering column is locked.
XCheck if the steering column is locked. When
doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft
direction.
Steering wheel103
Seats, steering wheela nd mirrors
Z

Adjusting thesteering wheel electri -
cally
:Adjusts th esteering whee lposition (fore-
and-af tadjustment)
;Adjusts th esteering whee lheight
iFurther relate dsubjects :
REASY-ENTRY/EXIT feature (Ypage 105)
RStoring settings(Ypage 109)
ROperating theon-bo ard computer
(Ypage 201).
Steering wheel heating
Switchin gon/off
XTurn th eSma rtKey to position 2in th eignition
loc k(Ypage 131).
XTo switch on/off: turnthe lever in th edirec -
tion of arrow :or;.
Indicato rlamp =lights up or goe sout.
Vehicles without KEYLESS-GO :when you
remove th eSma rtKey from th eignition lock, th e
steering whee lheating is deactivated.
Vehicles wit hKEYLESS-GO :when you switch off
th ei gnition and open th edriver's door ,the
steering whee lheating is deactivated.
104Steering wheel
Seats ,steering wheel and mirrors

Problems with the steering wheel heating
ProblemPossible causes/consequences andMSolutions
The steering wheel heat-
ing has switched off pre-
maturely or cannot be
switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
EASY-ENTRY/EXIT feature
Important safety notes
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants –particularly children –could
become trapped. There is arisk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
Move the steering wheel adjustment lever if
there is arisk of entrapment by the steering
wheel. The adjustment process is stopped.
Press one of the memory function position but-
tons. The adjustment process is stopped. This
function is only available on vehicles with mem-
ory function.
GWARNING
If children activate the EASY-ENTRY/EXIT fea-
ture, they can become trapped, particularly
when unattended. There is arisk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There is arisk of an
accident.
Always wait until the adjustment process is
complete before driving off. The EASY-ENTRY/EXIT feature makes gettingi
n
and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature using the multimedia sys-
tem (see the separate operating instructions).
Position of the steering wheel when the
EASY-ENTRY/EXIT featureisa ctive
The steering wheel swings upwards when you:
Rremove the SmartKey from the ignition lock
Rwith KEYLESS-GO:open the driver's door;
KEYLESS-GO must be in position 1
Rwith the SmartKey:open the driver's door;
the SmartKey must be in position 0or 1in the
ignition lock (
Ypage 131)
Ropen the driver's door when the ignition is
switched off
iThe steering wheel only tilts upwards if the
driving position is stored after the steering
column adjustment has been adjusted
(
Ypage 109).
The most recent driving position of the steering
wheel is stored if:
Rthe ignition is switched off
Rthe settingiss tored with the memory function
(Ypage 109).
iThe steering wheel only moves upwards if it
has not already reached the upper steering
limiter.
Steering wheel105
Seats, steering wheela nd mirrors
Z