2017 MERCEDES-BENZ SLC-Class parking brake

Active BrakeAssist
Gene ralinform ation
iObserv ethe "Importan tsafet ynotes "sec-
tion (Ypage 54).
Active Brake Assis tconsists ofad istanc ewarn-
ing function wit hanautonomous braking func-
tion and Adaptive Brake Assist.
Active Brake Assis tcan help you to minimiz ethe
ris kofac ollision wit hthe vehicl einfrontor
reduce th eeffects of suc hacollision .
If Active Brake Assis tdetects that there is arisk
of collision ,you will be warned visually and
acoustically. If you do no treac ttot hevisual and
audible collision warning ,autonomous braking
can be initiate dincritical situations. If you apply
th eb rak eyourself in acritical situation ,Adap-
tive Brake Assis toftheActive Brake Assis tsys-
te ms upport syou.
Import ant safety notes
In particular, th edetection of obstacles can be
impaire dif:
Rthere is dir tonthesensor soranythin gelse
covering th esensor s
Rthere is snow or heav yrain
Rthere is interferenc ebyother radar source s
Rthere are strongradar reflections, for exam-
ple in parking garages
Ran arrow vehicl eistraveling in front, e.g. a
motorbik e
Ravehicl eistraveling in fron tonadifferentlin e
Rne wv ehicles or after servicing is carrie dout
on th eActiv eBrake Assis tsystem
Observ ethe important safet ynotes in the
"Breaking-in notes" section (
Ypage 114).
Followin gdamag etothefron tend of th evehicle,
hav ethe configuration and operation of th e
radar sensor checke dataqualified specialis t
workshop .This also applie stocollision satslow
speeds wher ethere is no visible damag etothe
fron toft hevehicle.
Activating/deactivating
Active Brake Assis tisautomatically active after
switching on th eignition .
You can activat eordeactivat eActiv eBrake
Assis tusin gthe on-board computer
(
Ypage 171). When deactivated, th edistanc ewarning function and th
eautonomous braking
function are also deactivated.
If Active Brake Assis tisdeactivated, th eæ
symbol appear sintheassistanc egraphic dis-
play.
Distance warning function
Genera linformation
The distanc ewarning function can help you to
minimiz ethe riskofaf ront-end collision wit ha
vehicl eahead or reduce th eeffects of suc ha
collision .Ifthedistanc ewarning function
detects that there is ariskofac ollision ,you will
be warned visually and acoustically.
Important safety notes
iObserv ethe "Importan tsafet ynotes "sec-
tion for drivin gsafet ysystems (Ypage 54) .
GWARNIN G
The distanc ewarning function does no treact:
Rto people or animals
Rto oncomin gvehicles
Rto crossing traffic
Rwhen cornering
Thus ,the distanc ewarning function canno t
provid eawarning in all critical situations.
There is ariskofana ccident.
Always pay careful attention to th etraffic sit -
uation and be read ytob rake.
GWARNIN G
The distanc ewarning function canno talways
clearly identify objects and comple xtraffic
situations.
In suc hcases, th edistanc ewarning function
may:
Rgiv eanu nnecessary warning
Rnotg iveaw arning
There is ariskofana ccident.
Always pay careful attention to th etraffic sit -
uation and do no trelys olely on th edistanc e
warning function .
56Driving safety systems
Safety

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large object stothe
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large object stothe
SmartKey. Remove any bulky key rings before
insertingt he SmartKey into the ignition lock.
!Keep the SmartKey away from stron gmag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. amobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. ametal case.
This can affect the functionality of the Smart- Key.
SmartKey functions
:& Locks the vehicle
;FUnlockst he trunk lid
=%Unlockst he vehicle
XTo unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Ranti-theft protection is reactivated.
XTo lock centrally: press the&button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe stowage compartmentint he center con-
sole
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (
Ypage 174).
When it is dark, the surround lighting also comes
on if it is activated in the on-board computer
(
Ypage 173).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is aKEY-
LESS-GO key in the vehicle (
Ypage 117).
SmartKey63
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 248).
or
XJump-start the vehicle (Ypage 249).
or
XConsult aqualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 66) and replace it if necessary
(Ypage 66).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from apowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost aSmart-
Key.XHave the SmartKey deactivated at aqualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
68Doors
Opening and closing

Notesonb reaking-in anew vehicle
Important safety notes
Thes ensors ystemofs omedriving and driving
safety systems adjusts automaticall ywhile a
certai ndistance is being driven after the vehicle
ha sb eend elivere dorafter repairs. Full system
effectiveness is not reache duntilthe end of this
teach-i nprocedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several hundred kilometers of driving. Compensate for
thi sb yapplyin ggreate rforce to the brake pedal.
The first 1000 miles (150 0km)
Them orey ou look after the engine when it is
new ,the mor esatisfied yo uwillbew ithi ts per-
formance in the future.
RYo us houl dtherefore drive at varying vehicle
and engine speeds for the first 1,000 miles
(1,500 km).
RAvoi dheavy loads, e.g .driving at full throttle,
during thi speriod.
RChang egearing oodt ime, befor ethe tach-
ometer needl eisÔ of the wa ytothe red area
of the tachometer.
RDo not manuall yshift to alower gear to brake
the vehicle.
RTry to avoi ddepressing the accelerator pedal
beyond the point of resistanc e(kickdown).
After 1000 mile s(1500 km),y oucan increase
the engine spee dgradually and accelerate the
vehicl etofulls peed.
Yo us houl dalsoo bser ve these note sonbreak-
ing in if the engine or parts of the drive train on
your vehicl ehaveb eenr eplaced.
Alway sobser ve the maximum permissible
speed.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell can restrict the peda ltravel or obstruct adepresse dpedal.
Th eo perating and roa dsafety of the vehicl eis
jeopardized .The re is ariskofana ccident.
Make sure tha tallobjects in the vehicl eare
stowe dcorrectly ,and tha tthe yc annot enter
the driver's footwell .Install the floormats
securel yand as specified in order to ensure
sufficient clearanc efor the pedals .Donot use
loose floormats and do not place floormats on
top of one another.
GWARNING
Unsuitabl efootwear can hinde rcorrec tusage
of the pedals ,e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is ariskofana ccident.
Wear suitabl efootwear to ensur ecorrect
usag eoft he pedals.
GWARNING
If yo uswitch off the ignition whil edriving,
safety-relevant functions ar eonlya vailable
with limitations ,ornot at all. This could affect,
for example, the powe rsteering and the brake
boosting effect. Yo uwillr equire considerably
mor eeffort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition whil edriving.
GWARNING
If the parking brake ha snot been fully
releasedw hend riving, the parking brake can:
Roverheat and cause afire
Rlose its hold function.
There is ariskoff irea nd an accident. Release
the parking brake full ybefor ed riving off.
!Do not warm up the engine with the vehicle
stationary. Drive off immediately. Avoi dhigh
engine speeds and driving at full throttle until
the engine ha sreache dits operating temper-
ature.
Onl yshift the automatic transmission to the
desired drive positio nwhent he vehicl eissta-
tionary.
114Driving
Dr iving an dparking

Where possible, avoid spinningthe drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
SmartKey positions
SmartKey
gTo remove the SmartKey
1Power supply for some consumers, such as
the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
KEYLESS-GO
General notes
Vehicles with KEYLESS-GO are equipped with a
SmartKey featuring an integrated KEYLESS-GO
start function and adetachable Start/Stop but-
ton.
The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the differentk ey
positions in the ignition lock. This is only the
case if you are not depressing the brake pedal. If you depress the brake pedal and press the
Start/Stop button
,the engine start simmedi-
ately.
Ac heck which periodically establishes aradio
connection between the vehicle and the Smart-
Key determines whether avalid SmartKey is in
the vehicle. This occurs,f or example, when
starting the engine.
To start the vehicle without actively using the
SmartKey:
Rthe Start/Stop button must be inserted in the
ignition lock.
Rthe SmartKey must be in the vehicle.
Rthe vehicle must not be locked with the
SmartKey or KEYLESS-GO (Ypage 63).
Do not keep the SmartKey:
Rwith electronic devices, e.g. amobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. ametal case.
This can impair the functionality of the KEY-
LESS-GO key.
If you lock the vehicle with the SmartKey's
remotec ontrol or with KEYLESS-GO, after a
short time:
Ryou will not be able to switch on the ignition
with the Start/Stop button.
Ryou will not be able to start the engine with the
Start/Stop button until the vehicle is
unlocked again.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with KEYLESS-GO
:Start/Stop button
;Ignition lock
Driving115
Driving and parking
Z

As soonasthe ignition is switched on, al lthe
indicator lamps in the instrument cluster light
up .Further informatio nonsituations where an
indicator lamp either fails to go outa fterstarting
the engine or lights up whil edriving
(
Ypage 204).
If Start/Stop button :hasn ot yetbeen
pressed, thisc orrespondstot he key being
remove dfrom the ignition.
XTo switc honthe power supply: press
Start/Stop button :once.
The powe rsuppl yiss witched on. Yo ucan now
activate the windshield wipers, for example.
The powe rsuppl yiss witched off agai nif:
Rthe driver's door is opene dand
Ryoup ress Start/Stop button :twice when
in thisp osition
XTo switc honthe ignition: press Start/Stop
button :twice.
The ignition is switched on.
If yo upress Start/Stop button :once when
in thisp osition, the ignition is switched off
again.
Removing the Start/Stopb utton
Youc an remove the Start/Stop button from the
ignition lock and start the vehicl easnormal
using the SmartKey.
XRemove Start/Stop button :from ignition
lock ;.
Yo udon ot have to remove the Start/Stop but-
ton from the ignition lock when yo uleave the
vehicle. Yo ushould, however, always take the
SmartKeyw ithy ou when leaving the vehicle. As
long as the Sma rtKey
isint
he vehicle:
Rthe vehiclecan be started using the Start/
Stop button
Rthe electrically powered equipment can be
operated
Starting the engine
Important safety notes
GWARNING
If children ar eleftu nsupervised in the vehicle,
they could:
Ropen the doors ,thuse ndangering other
people or roa dusers.
Rgeto utand disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicl ein
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission outo f
park position P
RStartthe engine.
There is ariskofana ccident and injury.
Whe nleavi ng the vehicle, always take the
SmartKeyw ithy ou and lock the vehicle. Never
leav echildren or animals unattended in the
vehicle. Alway skeept he SmartKeyo utof
reach of children.
GWARNING
Combustion engine semitp oiso nousexhaust
gases such as carbo nmonoxide. Inhaling
thes eexhaus tgases lead stopoisoning. There
is ar iskoff atalinjury.T herefore neve rleave
the engine running in enclose dspaces with-
outs ufficient ventilation.
GWARNING
Flammabl ematerial sintroduced through
environmentali nfluence or by animals can
ignite if in contact with the exhaus tsystem or
parts of the engine thath eatu p.There is arisk
of fire.
Carry outr egular checks to make sure that
ther eareno flammabl eforeig nmaterial sin
the engine compartment or in the exhaust
system.
During acolds tart, the engine runs at higher
speed stoenablethe catalytic converter to
116Driving
Driving an dparking

reach its operating temperature. The sound of
the engine may change during this time.
Automatic transmission
XDepress the brake pedaland keep it
depressed.
XShift the transmission to position P.
Transmission position display Pis shown in
the multifunction display.
iYou can start the engine in transmission
position Pand N.
Starting procedure with the SmartKey
To start the engine using the SmartKey instead
of KEYLESS-GO, pul lthe Start/Stop button out
of the ignitio nlock.
XTurn the SmartKey to position 3in the ignition
lock (Ypag e115) and release it as soon as the
engine is running.
UsingK EYLESS-GO to start the engine
The Start/Stop button can be used to start the
vehicl emanually withou tinserting the SmartKey
into the ignitio nlock. The Start/Stop button
must be inserted in the ignitio nlock and the
SmartKey must be in the vehicle. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start func-
tion.
XDepress the brake pedala nd keep it
depressed.
XPress the Start/Stop button once
(Ypag e115).
The engine starts.
Pulling away
General notes
GWARNING
If the engine speedisa bove the idling speed
and you engage transmission position Dor R,
the vehicl ecould pul lawa ysuddenly.T here is
ar isk of an accident.
When engaging transmission position Dor R,
alway sfirmly depress the brake pedala nd do
not simultaneously accelerate.
!Change gearing ood time and avoi dspin-
ning the wheels. You could otherwise damage
the vehicle.
Depress the accelerator carefully when pulling
away.
The vehicl elocks centrally once you have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the insid eatany
time.
You can als odeactivate the automatic locking
feature (
Ypag e173).
It is only possible to shift the transmission from
position Pto the desired position if you depress
the brake pedal. Only then is the shift lock
released.
iUpshifts take place at highere ngine speeds
after acold start. This help sthe catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake (
Ypag e133).
Hill start assist
Hill start assist help syou when pulling awa yfor-
ward sorinr everse on an uphill gradient. It holds
the vehicl efor as hort time after you have
removed you rfoot from the brake pedal. This
gives you enoug htime to move you rfoot from
the brake pedaltot he accelerator pedala nd to
depress it before the vehicl ebegins to roll.
GWARNING
After ashort time, hill start assist wil lnolon-
ger brake you rvehicl eand it could roll away.
There is arisk of an accident and injury.
Therefore, quickly move you rfoot from the
brake pedaltot he accelerator pedal. Never
leave the vehicl ewhen it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling awa yonalevel road or on a
downhill gradient.
Rthe transmission is in position N.
Rthe electric parking brake is applied.
RESP®is malfunctioning.
Driving117
Driving and parking
Z

ECO start/stop function
Introduction
The ECO start/sto pfunction switches the
engine off automaticall yifthevehicle is stopped
unde rcertain conditions.
The engine start sautomaticall ywhen th edriver
want stop ull away again.T he ECO start/stop
function therebyh elps you to reducethe fuel
consumptio nand emissionsofy our vehicle.
Important safety notes
GWARNING
If th eengine is switched off automaticall yand
you exi tthe vehicle ,the engine is restarted
automatically. The vehicle may begin moving.
Thereisar isk of accidenta nd injury.
If you wish to exi tthe vehicle ,always tur noff
th ei gnition and secure th evehicle against
rolling away.
General notes
:ECO start/sto pdisplay
The ECO start/sto pfunction is activated when-
ever you switch on th eengine usingt heSmart-
Key or th eStart/Sto pbutton.
If th eengine has been switched off automati-
cally by th eECO start/sto pfunction,t heè
ECO symbol is shownint hemultifunction dis-
play.
Automatic engine switch-off
If th evehicle is braked to astandstil lin D or N,
th eE CO start/sto pfunction switches off the
engine automatically. The ECO start/sto
pfunction is operational
when:
Rth ei ndicator lamp in th eECO butto nislit
green.
Rth eo utside temperatur eiswithin th erange
that is suitable for th esystem.
Rthee ngine is at normal operatin gtem pera-
ture.
Rth es et temperatur efor th evehicle interior
has been reached.
Rth eb attery is sufficiently charged.
Rthes ystem detect sthatthe windshield is not
fogged up when th eair-conditioning system is
switched on.
Rth eh ood is closed.
Rthed river'sd oor is closed and th edriver's
seat belt is fastened.
All of th evehicle's systems remain active when
th ee ngine is stopped automatically.
Automatic engine switch-off can tak eplacea
maximum of four times in arow (initial stop, then
three subsequents tops).
The HOLD function can be activated if the
engine has been switched off automatically. It is
then no tnecessaryt ocontinue applyingt he
brakes durin gthe automatic stop phase.W hen
you depress th eaccelerato rpedal, th eengine
start sautomaticall yand th ebraking effect of
th eH OLDf unction is deactivated.
Automatic engine start
The engine start sautomaticall yif:
Ryou switch off th eECO start/sto pfunction by
pressingt heECO button
Rin transmission position Dor Ntheb rake
pedal is released and th eHOLDfunction is not
active
Ryou depress th eaccelerato rpedal
Ryou engage reverseg earR
Ryou mov ethe transmission out of position P
Ryou switch to driveprogram S+
Ryou unfasten your seat belt or open th edriv-
er'sd oor
Rthev ehicle start storoll
Rtheb rak esystem requires this
Rthet em peratur einthevehicle interiord evi-
ate sfromt heset range
118Driving
Driving and parking