2017 MERCEDES-BENZ SLC-Class height

The Emergency TensioningDevice tightensthe
seat belt in an accident ,pulling the belt close
against the body. However it does not pull the
vehicle occupant back in the direction of the
backrest.
The Emergency TensioningD evice does not cor-
rect an incorrect seat position or the routing of
an incorrectly fastened seat belt.
When triggered, aseat belt force limiter helps to
reduce the force exerted by the seat belt on the
vehicle occupant.
The seat belt force limiters are synchronized
with the front air bags which absorb part of the deceleration force. This can reduce the force
exerted on the vehicle occupantsd uring an acci-
dent.
!If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of
the front-passenger seat. This may otherwise lead to the triggerin gofthe Emergency Ten-
sioning Device in the event of an accident,
which will then need to be replaced.
Important safety notes
The use of seat belts and child restraint systems
is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadian provinces
Even where this is not required by law, all vehicle
occupantss hould correctly fasten their seat
belts before starting the journey.
GWARNING
If the seat belt is not worn correctly, it cannot
perform its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury
or even fatal injury.
Always ensure that all vehicle occupantsh ave
their seat belts fastened correctly and are sit-
ting properly.
GWARNING
The seat belt does 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
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal
injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
GWARNING
Persons less than 5ft(1.50 m) tall cannot
wear the seat belt correctly without an addi-
tional and suitable restraint system. If the
seat belt is not worn correctly, it cannot per-
form its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
For this reason, alwayss ecure persons under
5ft( 1.50 m) tall in suitable additional restraint
systems.
If ac hild younger than twelve years old and
under 5ft(1.50 m) in height is traveling in the
vehicle:
Ralwayss ecure the child in achild restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child
Ralwayso bserve the instructions and safety
notes on "Children in the vehicle"
(
Ypage 51) in addition to the child restraint
system manufacturer's installation and oper-
ating instructions
Rbe sure to observe the instructions and safety
notes on the "Occupant classification system
(OCS)" (
Ypage 44)
Occupant safety39
Safety
Z

Air bags
Introd uction
The installation poin tofanair bag can be rec -
ognized by th eAIRBA Gs ymbol.
An air bag complements th ecorrectly fastened
seat belt .Itisnos ubstitutefor th eseat belt .The
air bag provides additional protection in appli-
cable acciden tsituations.
Not all air bags are deployed in an accident. The
differen tair bag systems function independ-
entl yfromo neanother (
Ypage 48).
However, no system available today can com-
pletely eliminate injurie sand fatalities.
It is also no tpossibl etorule out ariskofi njury
caused by an air bag due to th ehigh spee dat
whic hthe air bag mus tbedeployed.
Import ant safety notes
GWARNIN G
If you do no tsit in th ecorrect seat position ,
th ea ir bag canno tprotect as intended and
could eve ncaus eadditional injury when
deployed. This poses an increased ris kof
injury or eve nfatal injury.
To avoi dhazardous situations, always mak e
sur ethata ll of th evehicle's occupants:
Rhav efastene dtheir seat belt scorrectly ,
includin gpregnant women
Rare sitting correctl yand maintai nthe great-
est possibl edistanc etotheair bags
Rfollow th efollowin ginstruction s
Always mak esuret hatthe re are no objects
between th eair bag and th evehicle's occu-
pants .
RAdjus tthe seat sproperly before beginning
your journey. Always mak esuret hatthe seat
is in an almost upright position .The center of
th eh ead restrain tmusts upport th ehead at
about eye level.
RMov ethe driver's and front-passenger seat s
as far bac kaspossible. The driver's seat posi-
tion mus tallow th evehicl etobed riven safely.
ROnly hold th esteering whee lontheoutside .
This allows th eair bag to be fully deployed.
RAlways lean against th ebackrest while driv-
ing .Don otlean forward sorlean against th edoor or side window. You may otherwise be in
th
ed eploymen tarea of th eair bags .
RAlways keep your fee tinthefootwell in fron t
o
f th eseat .Don otput your fee tonthedash -
board, for example. Your fee tmay otherwise
be in th edeployment area of th eair bag.
RForthisr eason ,always secure person sless
than 5ft(1.50m)t allins uitabl erestraint sys-
tems .Uptot hisheight ,the seat belt cannot
be worn correctly.
If ac hild is traveling in your vehicle ,also
observe the followin gnotes:
RAlway ssecurec hildren under twelve year sof
ag ea nd less than5 ft (1.50m)tallins uitable
child restraint systems.
ROnlys ecureac hild in arearward-facing child
restraint systemont he front-passengerseat
when the front-passenge rfront ai rbag is
deactivated .Ifthe PASSENGER AIR BAG OFF
indicator lamp is permanentl ylit,t he front-
passenge rfront ai rbag is deactivated
(
Ypage 38).
RAlway sobser ve the instructions and safety
note sont he "Occupant Classification System
(OCS) "(
Ypage 44) and on "Children in the
vehicle" (Ypage 51 )ina ddit iontot he child
restraint systemm anufacturer's installation
and operating instructions.
Objects in the vehicle interior may prevent
an air bag fromf unctioningcorrectly. Before
startin gyourjourney and to avoi drisks resul ting
fromt h

e spee dofthe airbag as it deploys, make
sure that:
Rthere ar enopeople, animals or objects
between the vehicl eoccupants and an air
bag.
Rthere ar enoobjects between the seat, door
and B-pillar.
Rno accessories, such as cup holders, are
attache dtothe vehicl ewithint he deployment
area of an ai rbag,e .g.tod oors or side win-
dows.
Rno heavy, sharp-edged or fragile objects ar ein
the pockets of your clothing. Store such
objects in asuitabl eplace.
GWARNING
If yo umodify the ai rbag cove rora ffix objects
such as sticker stoit, the ai rbag can no longer
functio ncorrectly. There is an increasedr isk
of injury.
42Occupant safety
Safety

Resetting triggeredNECK-PRO head
restraints
Do not insert your finger between the upholstery of the hea drestraint and the seat. Payp articular
attention whil eresetting the NECK-PROh ead
restraints.
XTilt the top of the NECK-PROh eadr estraint
cushio nforward sinthe direction of arrow :.
XPush the NECK-PROh eadr estraint cushion
dow nasfar as it will go in the direction of
arrow ;.
XFirmly push the NECK-PROh eadr estraint
cushio nbackint he direction of arrow =until
the cushio nengages.
XRepea tthis procedure for the second NECK-
PROh eadr estraint.
iResetting the NECK-PROh eadr estraints
requires alot of strength. If yo uhaved ifficulty
resetting the NECK-PROh eadr estraints, have
this work carrie doutataq uali fied specialist
workshop.
PRE-SAFE®(anticipatory occupant
protection system)
PRE-SAFE®informs yo uofcertain critical driving
situations and take spre-emptive measures to
protect the vehicl eoccupants.
PRE-SAFE
®can take the following measures
independentl yofeacho ther:
Rpre-tensioning the driver' sand front-
passenger seatbelt.
Rclosing the sid ewindows.
Rvehicles with amemory function: setting a
more favorabl eseatp osition for the front-
passenger seat.
!Make sure that there are no objects in the
footwell or behind the seats. There is adanger
that the seats and/or objects could be dam-
aged when PRE-SAFE
®is activated.
Should an accident not occur, the preventative
measures take nare reversed. Certai nsettings
mus tbem adey ourself.
XIf the sea tbeltp re-tensioning is not reduced,
move the sea tbackrest back slightly.
Seatb eltp re-tensioning is released.
Automatic measures after an acci-
dent
Immediately afte ranaccident, the following
measures are implemented, depending on the
typ eand severity of the impact:
Rthe hazard warning lamps are activated
Rthe emergency lighting is activated
Rthe vehicl edoors are unlocked
Rthe front sid ewindow sare lowered
Rvehicles with amemory function: the electri-
cally adjustabl esteering wheel is raised
Rthe engine is switched off and the fue lsuppl y
is cut off
Rvehicles with mbrace: automatic emergency
call
Childrenint he vehicle
Important safety notes
Ifac hild younger than twelve years olda nd
under 5ft(1.50 m) in height is traveling in the
vehicle:
Ralways secur ethe child in achild restraint
systems uitabl efor Mercedes-Benz vehicles.
The child restraint systemm ustbea ppropri-
ate to the age, weight and size of the child
Rbe sure to observe the instructions and safety
note sint hissectio nina dditiontot he child
restraint systemm anufacturer's installation
instructions
Rbe sure to observe the instructions and safety
note sont he "Occupant classification system
(OCS) "(
Ypage 44)
Children in the vehicle51
Safety
Z

GWARNING
If you leave children unsupervised in the vehi-
cle, they coul dset it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehiclee quip-
ment and become trapped. There is arisk of
an accident and injury.
When leaving the vehicle, alway stake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If persons, particularl ychildren are subjected
to prolonged exposure to extreme heato r
cold, there is arisk of injury ,possibly even
fatal .Never leave children unattended in the
vehicle.
GWARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularl yonthe metal parts of the child
restraint system. There is arisk of injury.
If you leave the vehicle, taking the child with
you ,alway sensure that the child restraint
system is not exposedtod irect sunlight. Pro-
tect it with ablanket, for example. If the child
restraint system has been exposedtod irect
sunlight, let it cool downb efore securing the
child in it. Never leave children unattended in
the vehicle.
Always ensure that all vehicleo ccupants have
their seat belts fastened correctly and are sitting
properly.P articular attention must be pai dto
children.
Observe the safety notes on the seat belt
(
Ypag e39) and the notes on correct use of seat
belts (Ypag e40).
Ab ooster seat may be necessary to achieve
propers eat beltp ositioning for children over
41 lbs (18 kg )until they reach aheight where a three-point seat beltc
an be properly fastened
without abooster seat.
Special seat bel tretractor
GWARNING
If the seat beltisr eleased while driving, the
child restraint system wil lnolonger be
secure dproperly.T he special seat beltr etrac-
tor is disable dand the inertia real draw sina
portion of the seat belt. The seat beltc annot
be immediatel yrefastened. There is an
increased risk of injury,p ossibly even fatal.
Stop the vehiclei mmediately, paying atten-
tion to road and traffic conditions. Reactivate
the special seat beltr etractor and secure the
child restraint system properly.
The seat beltont he front-passenge rside is
equipped with aspecial seat beltr etractor.
When activated, the special seat beltr etractor
ensure sthat the seat beltw illn ot slacken once
the child restraint system has been secured.
Installing achild restraint system:
XAlways comply with the child restraint system
manufacturer's installation instructions.
XPul lthe seat belts moothly out of the belt
loop.
XEngage the seat beltt ongue in the beltbuckle.
Activating the special seat beltr etractor:
XPullthe seat belto ut fullyand let the inertia
reel retract it again.
Whil ethe seat beltisr etracting, you should
hear aratcheting sound .The special seat belt
retractor is activated.
XPush the child seat restraint system downs o
that the seat beltist ight and does not loosen.
Removing achild restraint system and deacti-
vating the special seat beltr etractor:
XAlways comply with the child restraint system
manufacturer's installation instructions.
XPress the release button of the beltb uckle,
hold the beltt ongue firmly and guide it back
toward sbeltl oop.
The special seat beltr etractor is deactivated.
52Children in the vehicle
Safety

The seats can still be adjusted when there is no
SmartKey in the ignition lock.
GWARNING
When you adjust aseat, you or other vehicle
occupantsc ould become trapped, e.g. on the
seat guide rail. There is arisk of injury.
Make sure when adjusting aseat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 42) and "Children in the vehicle"
(Ypage 51).
GWARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion .This could cause you to lose control of
the vehicle. There is arisk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
GWARNING
If you adjust the seat height carelessly, you or
other vehicle occupantsc ould be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment button sand become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustmen tsys-
tem.
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steerin gwheel or mirrors
Rfasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
!To avoid damage to the seats and the seat
heating, observe the following information:
Rkeep liquids from 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 also not be used to dry the seats.
Rclean the seat covers as recommended;
see the "Interior care" section.
Rdo not transport heavy loads on the seats.
Do not place sharp object sonthe seat
cushions, e.g. knives, nails or tools. 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 object sinthe
footwell under or behind the seats when mov-
ing the seats back. There is arisk that the
seats and/or the object scould be damaged.
iThe head restraints are equipped with the
NECK-PRO system (Ypage 50). For this rea-
son, it is not possible to remove the head
restraints from the seats.
For more information, contact aqualified spe-
cialist workshop.
Seats83
Seats, steering wheel and mirrors
Z

Adjusting theseats manually
XSea tfore-and-aft adjustment: lift lever:
and slid ethe seat forward sorbackwards .
XReleaselever :again .
Mak esuret haty ou hear th eseat engage in
position .
XTo adjust th ebackres tangle: relievethe
pressur eonthebackrest .
XPull handle ;and mov ebackrest to th e
desired angle.
XReleas ehandle ;again .
The backrest mus taudibly engage .
XTo adjust theseath eight :pull handle =
upwards or push it down repeatedly until th e
seat has reached th edesired height .
Adjusting th eseats electri cally
:Backrest angle
;Seat fore-and-af tadjustmen t
=Seat cushion angle
?Seat height
iYou can store th eseat setting susingthe
memory function (Ypage 91).
Adjusting th eheadr estraints
GWARNIN G
You could lose control of your vehicl eifyou do
th ef ollowin gwhile driving:
Radjust th edriver's seat ,head restraint,
steering whee lormirrors
Rfaste nthe seat belt
There is ariskofana ccident.
Adjus tthe driver's seat ,head restraint, steer -
ing whee land mirror and faste nyour seat belt
before starting th eengine.
XTo raise/lower: push thehead restrain t
upwards or pull it down int othe desired posi-
tion .
Adjusting th e4-wa ylumbar support
:Raises th ebackrest contour
;Soften sthe backrest contour
=Lowers th ebackrest contour
?Harden sthe backrest contour
84Seats
Seats ,steering wheel and mirrors

XPress button:repeatedly until the desired
heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iThe blower continues runnin gfor seven sec-
onds to cool down the heating elements.
iIf the battery voltage is too low, AIRSCARF
may switch off.
Problems with AIRSCARF
AIRSCARF has switched off prematurely or will
not switch on. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
XSwitc hoff electrical consumers that you do
not need, such as the rear window defroster
or interior lighting.
XSwitc honA IRSCARF again.
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,
steerin gwheel or mirrors
Rfasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
Children could injure themselves if they
adjust the steerin gwheel. There is arisk of
injury.
When leaving the vehicle, alwayst ake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steerin gwheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
GWARNING
If the steerin gwheel is unlocked while the
vehicle is in motion ,itcould change position
unexpectedly. This could cause you to lose
control of the vehicle. There is arisk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;Adjust sthe steerin gwheel height
=Adjust sthe steerin gwheel position (fore-
and-aft adjustment)
XPush release lever :down completely in the
direction of the arrow.
The steerin gcolumn is unlocked.
XAdjust the steerin gwheel to the desired posi-
tion.
XPush release lever :up completely.
The steerin gcolumn is locked.
XCheck if the steerin gcolumn is locked. When
doing so, try to push the steerin gwheel up or
down or try to move it in the fore-and-aft
direction.
86Steering wheel
Seats, steering wheel and mirrors

Adjusting thesteering wheel electri -
cally
:Adjusts th esteering whee lheight
;Adjusts th esteering whee lposition (fore-
and-af tadjustment)
iFurther relate dsubjects :
REASY-ENTRY/EXIT feature (Ypage 87)
RStoring setting s(Ypage 91)
EASY-ENTRY/EX ITfeatu re
Import ant safety notes
GWARNIN G
If you drive off while th eEASY-ENTRY/EXIT
feature is making adjustments ,you could lose
control of th evehicle. There is ariskofa n
accident.
Always wait until th eadjustmen tprocess is
complete before drivin goff.
GWARNIN G
When th eEASY-ENTRY/EXIT feature adjust s
th es teering wheel, you and other vehicl e
occupant s–particularly children –could
become trapped .There is ariskofi njury.
Whil ethe EASY-ENTRY/EXIT feature is mak -
ing adjustments ,makes uret hatnoo nehas
any body part sintheswee poft hesteering
wheel.
If somebod ybecome strapped :
Rpress on eofthememory function position
buttons ,or
Rmov ethe switch for steering whee ladjust -
men tint heopposit edirection to that in
whic hthe steering whee lismoving.
The adjustmen tprocess is stopped.
GWARNIN G
When th eEASY-ENTRY/EXIT feature adjust s
th es teering whee land th edriver's seat ,you
and other vehicl eoccupant s–particularly
children –could become trapped .There is a
ris kofi njury.
Whil ethe EASY-ENTRY/EXIT feature is mak -
ing adjustments ,makes uret hatnoo nehas
any body part sintheswee poft heseat and
th es teering wheel.
If somebod ybecome strapped :
Rpress on eofthememory function position
buttons ,or
Rpress on eofthememory function memory
buttons ,or
Rmov ethe switch for steering whee ladjust -
men tint heopposit edirection to that in
whic hthe steering whee lismoving
The adjustmen tprocess is stopped.
GWARNIN G
If you use opening sinthebodywork or
detachable part sassteps, you could:
Rslip and/o rfall
Rdamag ethe vehicl eand caus eyourself to
fall.
There is ariskofi njury.
Always use secure climbin gaids, e.g. asuita-
ble ladder.
The EASY-ENTRY/EXIT feature makes getting in
and out of your vehicl eeasier.
You can activat eand deactivat ethe EASY-
ENTRY/EXIT feature in th eon-bo ard computer
(
Ypage 174).
Steering wheel87
Seats ,steering wheel and mirrors
Z