2017 MERCEDES-BENZ SLC-Class engine

Panic alarm
XTo activate:press!button :for at
least one second.
Av isual and audible alarm is triggered if the
alarm system is armed.
XTo deactivate: press!button :again.
or
XInsert the SmartKey into the ignition lock.
or
XPress the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehicle.
Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi- cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupants are subjected during
an accident.
The restraint system comprises:
Rseat belt system
Rair bags
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all vehicle occupants:
Rhave fastened their seat belts correctly
(Ypage 40)
Rhave adjusted their seat and head restraint
properly (Ypage 82).
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (
Ypage 82). You also have to make sure that an air bag can
inflate properly if deploye
d(
Ypage 42).
An air bag supplements acorrectly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags
are not deployed. When an accident occurs, only
the air bags that increase protection in that par- ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against object spenetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" (
Ypage 48).
For information on children traveling with you in
the vehicle and on child restraint systems, see
"Children in the vehicle" (
Ypage 51).
Important safety notes
GWARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate aperson
with disabilities, contact an authorized
Mercedes-Benz Center for details. USA only:
for further information contact our Customer
AssistanceC enter at 1-800-FOR-MERCedes
(1‑800‑36 7‑6372).
Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and at
regular intervals while the engine is running.
Therefore, malfunction scan be detected in
good time.
Occupant safety37
Safety
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The6 restraint system warning lamp in the
instrument cluster lights up when the ignition is
switched on. It goes out no later than afew sec-
onds after the vehicle is started. The compo-
nentsoft he restraint system are in operational
readiness.
Am alfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignition is switched
on
Rdoes not go out after afew seconds with the
engine running
Rlights up again while the engine is running
GWARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident .This can affect
for example the Emergency Tensioning
Device or the air bag. This poses an increased
risk of injury or even fatal injury.
Have the restraint system checked and
repaired in aqualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp :and
PASSENGER AIR BAG OFF indicator lamp ;are
part of the Occupant Classification System
(OCS).
The indicator lamps display the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident ,all deployment criteria are met, the front-passenger front air bag is
deployed.
RPASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
Dependin gonthe person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during ajourney.
RChildren in achild restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-
led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" (
Ypage 44) and on "Chil-
dren in the vehicle" (Ypage 51). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat.
RAll other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated (
Ypage 44). Be sure to
observe the notes on "Seat
belts“ (
Ypage 38) and "Air bags"
(Ypage 42). There you can also find infor-
mation on the corrects eat position.
Seat belts
Introduction
Seat belts are the most effective means of
restrictingt he movementofv ehicle occupants
in the event of an accident or the vehicle rolling
over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
occupant in the best position in relation to the
air bag.
The seat belt system comprises:
RSeat belts
REmergency Tensionin gDevices and seat belt
force limiters
If the seat belt is pulled by the belt loop quickly
or with ajerk ym ovement, the belt retractor
locks. The belt strap cannot be extracted any
further.
38Occupant safety
Safety

Basicillust ration
XAdjus tthe sea t(Ypage 82).
The sea tbackrest mus tbeinana lmost ver-
tical position.
XPull the sea tbelts moothly outofb eltl oop =
and engage bel ttongue ;into belt
buckle :.
The sea tbeltont he driver’ sseata nd the
front-passenger sea tmay be tightened auto-
matically ,see "Belt adjustment"
(
Ypage 41).
XIf necessary ,pullu pward sonthe shoulder
section of the sea tbelttot ighten the belt
across your body.
In orde rtoattach the chil drestraint system
securelyint he vehicle, the sea tbeltont he front-
passenger sea tisequipped with aspecia lseat
bel tretractor. Furthe rinformation on the "Spe-
cia lsea tb eltr etractor" (
Ypage 52).
Releasing seat belts
!Make sur ethat the sea tbeltisf ully rolled up.
Otherwise ,the sea tbeltorb eltt onguew illb e
trapped in the doo rorinthe seatmechanism.
Thisc ouldd amaget he door, the doo rtrim
panel and the sea tbelt. Damaged sea tbelts
can no longer fulfil lthei rprotective function
and mus tbereplaced. Visit aquali fied spe-
cialist workshop.
XPres sthe release button in the bel tbuckle,
hol dthe bel ttonguef irmlyand guide the belt
back.
Sea tbelta djustment
Mercedes-Ben zSLC 43 AMG: the seatbelt
adjustment function is not available.
The seat-bel tadjustment is an integral part of
the PRE-SAFE
®convenience function. Thisf unc-
tion adjusts the driver's and front-passenger
sea tbelttot he upper bod yofthe occupants.
The bel tstrap is tightened slightlyw hen:
Rthe belttongueise ngaged in the buckle and
Rthe ignition is switched on
The seat-bel tadjustment will apply acertain
retraction force if any slack is detected between
the vehicle occupant and the sea tbelt. Do not
hol dontot he seatbeltt ightly while it is adjust-
ing.
You can switch the seat-bel tadjustment on and
off in the on-board computer (
Ypage 174).
Beltw arning for the drive rand front
passenger
The 7 seatbeltw arning lamp in the instru-
ment cluster is areminder that al lvehicle occu-
pants mus twearthei rseatb elts. It may light up
continuously or flash. In addition, there may be
aw arning tone.
Regardless of whether the driver's sea tbelth as
already bee nfastened, the 7seatbeltw arn-
ing lamp lights up for six seconds each time the engine is started. If, afte rsix seconds ,the driver
or front-passenger sea tbelth as not bee nfas-
tened and the doors are closed, the 7seat
bel twarning lamp lights up .Assoon as the driv-
er's and front-passenger sea tbelts are fastened
or afront doo risopened again, the 7seat
bel tw arning lamp goeso ut.
If the driver's sea tbeltisn ot fastened afte rthe
engine is started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once the driver's sea tbeltisf as-
tened.
If the vehicle' sspeed exceeds 15 mph
(25 km/h )once and the driver's and front-
passenger sea tbelts are not fastened, awarning
tone sounds. Awarning tone also sounds with
increasing intensity for 60 seconds or until the
driver or front passenger hav efastened their
sea tbelts.
If the driver or front passenger unfasten their
sea tbelts during the journey,t he seatbeltw arn-
ing is activated again.
Occupan tsafety41
Safety
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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
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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

good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintainasafe distance
from the vehicle in front.D rive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa-
tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section (
Ypage 255).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such away that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from aspeed of about 5mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 54).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally,f urther driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at aqualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (
Ypage 204) and dis- play messages which may be shown in the
instrument cluster (
Ypage 179).
Braking
XIf ABS intervenes:
continue to depress the
brake pedal vigorously until the braking sit-
uation is over.
XTo make afull brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a reminder to take extr acare while driving.
BAS (Brake Assist System)
General information
BAS operates in emergencyb raking situations.
If you depress the brake pedal quickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 54).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergencyb raking situation is
increased. There is arisk of an accident.
In an emergencyb raking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking
XKeep the brake pedal firmly depressed until
the emergencyb raking situation is over.
ABS prevent sthe wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.
Driving safety systems55
Safety
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Important safety notes
GWARNING
Adaptive Brake Assist canno talways clearly
iden tifyo bject sand co mplextraffic situa-
tions.
In suchc ases, Adaptive Brake Assist can:
Rinterveneu nnecessarily
Rnotintervene
Thereisar iskofana cciden t.
Always pay careful attentio ntothetraff icsit-
uation and beread ytob rake. Terminate the
interventio ninanon-criticaldriving situation.
GWAR NING
Adaptive Brake Assist does no treact:
Rto people or animals
Rto oncomin gvehicle s
Rto crossing traff ic
Rwhen cornering
As aresult, th eAdaptive Brake Assist may not
interveneina llcritical conditions. Thereisa
ris kofana cciden t.
Always pay careful attentio ntothetraff icsit-
uation and beread ytob rake.
Due to th enature of th esystem, particularly
co mpli cated but non-critical driving conditions
may also caus eBrake Assist to intervene.
If adaptive Brake Assist isno tavailab ledue to a
malfunctio nintheradar sensor system, the
brak esystem remains availab le withfull brake
boostin geffect and BA S.
ESP®(Electronic Stability Program)
General notes
iObserv ethe "Im portan tsafety notes" sec-
tio n(Ypage 54).
ESP
®monitors driving stabilit yand traction,i .e.
power transmission between th etires and the
road surface.
If ESP
®detect stha tthe veh icle is deviating from
th ed irection desired bythed river, oneorm ore
wheelsa re braked to stabiliz ethe veh icle.The
engineo utputisalso mod ifiedtok eept he veh i- cle on th
edesired course within physical limits.
ESP
®assists th edriver when pullingaway on
wet or slippery roads. ESP®can also stabilize
th ev ehicle durin gbraking.
ETS (Electronic Traction System)
iObserv ethe "Importan tsafety notes" sec-
tio n(Ypage 54).
ET St raction control is part of ESP
®.
ET Sb rakes th edrivew heelsi ndivid ually if they
spin.T his enables you to pull away and acceler-
ate on slippery surfaces, for example if th eroad
surface is slippery on ones ide.Inaddition,m ore
drivet orque istransferred to th ewheel or
wheelsw itht raction.
ET Sr emains active when you deactivate ESP
®.
Important safety notes
GWARNING
If ESP
®is malfunctioning, ESP®is unab leto
stabilizet hevehicle .Add itionally, further driv-
ing safety systems are deactivate d.This
increases th eriskofs kiddin gand an accident.
Drive on carefully. Hav eESP
®checked at a
qualified specialist workshop.
When to wingthe vehicle witht herear axle
raised, observ ethe note sonE SP
®
(Ypage 252).
If the å ESP®OFFw arning lamp lightsu p
continuously, then ESP®is deactivate d.
If the ÷ ESP®warning lamp and the å
ESP®OFFw arning lamp are lit continuously,
ESP®is no ta vailab ledue to amalfunction.
Observ ethe information on warning lamps
(
Ypage 205) and display messagesw hichmay
be shown in thei nstrumen tcluster
(
Ypage 179).
iOnly use wheelsw itht he recommended tire
sizes. Only then willESP®function properly.
Characteristics of ESP®
General information
Ifthe ÷ ESP®warning lamp goes out before
beginnin gthe journey, ESP®is automatically
active.
58Driving safety systems
Safety

If ESP®intervenes, the÷ESP®warning lamp
flashe sinthe instrument cluster.
If ESP
®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depresst he accelerator pedalasf ar as
necessary when pulling away.
XAdapt you rdriving style to suit the prevailing
road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle stops
moving. The engine starts automatically when
the driver wants to pul lawa ya gain. ESP
®
remains in its previously selected status, e.g. if
ESP®was deactivated before the engine was
automatically switched off.
Deactivating/activating ESP®(except
SLC 43 AMG)
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 54).
You can select between the following states of
ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes the vehicle.T here is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
It may be best to deactivate ESP
®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Spinning the wheel sresults in acutting action
which providesb etter grip.
iActivate ESP®as soon as the situations
describeda bove no longer apply. ESP®will
otherwise not be abl etostabilize the vehicle if the vehicle starts to skid or
awheel starts to
spin.
!Avoid spinning the driven wheel sfor an
extended period with ESP®deactivated. You
could otherwise damage the drivetrain.
Deactivating/activating ESP®
XTo deactivate: press button:.
The å ESP®OFF warning lamp in the
instrument cluster lights up.
XTo activate: press button :.
The å ESP®OFF warning lamp in the
instrument cluster goes out.
Characteristic swhen ESP®is deactivated
If ESP®is deactivated and one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster flashes. In such situations,
ESP
®wil lnot stabilize the vehicle.
If you deactivate ESP®:
RESP®no longer improves driving stability.
REngine torque is no longer limited and the
drive wheel sare abl etospin.
RTraction control is still activated.
RActive Brake Assist is not available and is not
activated even if you brake firmly with assis-
tance from ESP
®
RPRE-SAFE®is no longer available, nor is it
activated if you brake firmly and ESP®inter-
venes.
RESP®still providess upport when you brake
firmly.
Driving safety systems59
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