2018 MERCEDES-BENZ CLA COUPE brake

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
(
Ypage4 2) and the notes on correct use of seat
belts (Ypage4 3).
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 seatbelt retractor
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 disableda nd the inertia real draw sina
portion of the seat belt. The seat beltc annot
be immediatel yrefastened. There is an
increased risk of injury ,possibly 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.
All seat belts in the vehicle, except the driver's
seat belt, are equipped with aspecial seat belt
retractor. When activated, the special seat belt
retractor ensure sthat the seat beltc annot
slacken once the child seat is secured.
Installing achild restraint system:
XMake sure you observe the child restraint
system manufacturer's installation instruc-
tions.
XPul lthe seat belts moothly from the belto ut-
let.
XEngage seat beltt ongue in beltbuckle.
Activating the special seat beltr etractor:
XPullthe seat belto ut fullyand let the inertia
reel retract it again.
Whilet he seat beltisr etracting, you should
hear aratcheting sound .The special seat belt
retractor is enabled.
XPush the child restraint system downsot hat
the seat beltist ight and does not loosen.
Removing the child restraint system and deac-
tivating the special seat beltr etractor:
XMake sure you observe the child restraint
system manufacturer's installation instruc-
tions.
XPress the release button of the seat belt
buckle and guide the seat beltt ongue back
toward sthe belts ash guide.
The special seat beltr etractor is deactivated.
Children in the vehicle55
Safety
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Rearward-facingchild restraint system
If it is absolutely necessary to install arearward-
facing child restraint system on the front-
passenger seat, always make sure that the
front-passenger front ai rbag is deactivated.
Only if the PASSENGER AIR BAG OFF indicator
lamp is permanently li t(
Ypage 41)ist he front-
passenger front ai rbag deactivated.
Alway sobserve the child restraint system man-
ufacturer's installation and operating instruc-
tions.
Forward-facing child restraint system
If it is absolutely necessary to install aforward-
facing child restraint system on the front-
passenger seat, always move the front-
passenger seata sfar back as possible .Fully
retract the seatc ushionlen gth. The entir ebase
of the child restraint system mus talway sresto n
the seatc ushionofthe front-passenger seat.
The backrest of the child restraint system must
li easf lata sp ossible against the backrest of the
front-passenger seat. The child restraint system
mus tnot touch the rooforbes ubjecte dtoal oad
by the headr estraint. Adjust the angle of the
seatb ackrest and the headr estraint position
accordingly .Alway smake sure that the shoul-
der bel tstrapisc orrectly routed from the vehi-
cle bel toutlet to the shoulder bel tguide on the
child restraint system. The shoulder bel tstrap
mus tberouted forward and dow nfrom the vehi-
cle bel toutlet. If necessary, adjust the vehicle
bel toutlet and the front-passenger seata ccord-
ingly.
Alway sobserve the child restraint system man-
ufacturer's installation and operating instruc-
tions.
Child-proof locks
Important safety notes
GWARNING
If children are traveling in the vehicle, they
could:
Rope ndoors, thuse ndangering otherp eople
or roadu sers
Rexitt he vehicl eand be caught by oncoming
traffic
Roperate vehicl eequipment and become
trapped
There is ariskofana ccident and injury.
Alway sactivate the child-proof locks and
overrid efeature if children are traveling in the
vehicle. Whenl eaving the vehicle, always take
the key with yo uand lock the vehicle. Never
leave children unattende dinthe vehicle.
Overrid efeature for:
Rthe reard oors (Ypage 60)
Rthe rearsidew indow s(Ypage 60)
GWARNING
If yo ulea ve children unsupervised in the vehi-
cle ,they could set it in motion by ,for example:
Rrelease the parking brake.
Rshift the automatic transmissio noutof the
parking position P.
Rstartthe engine.
In addition, they may operate vehicl eequip-
ment and become trapped .There is arisko f
an accident and injury.
Whenl eaving the vehicle, always take the
SmartKey with yo uand lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If persons,p articularly children are subjected
to prolonged exposure to extreme heato r
cold, there is ariskofi njury, possibly even
fatal. Neverl eave children unattende dinthe
vehicle.
Childrenint he vehicle59
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Drivingsafet ys ystems
Overview of drivin gsafet ys ystems
In this section ,you will fin dinformati on about
th ef ollowin gdrivin gsafet ysystems :
RABS(Anti-lock Brakin gSystem)
(Ypage 61)
RBA S(Brak eAssist System) (Ypage 61)
RActive Brak eAssist(Ypage 62 )
RESP®(Electronic Stability Program)
(Ypage 64)
REB D( Electroni cBrak eforce Distribution )
(Ypage 67 )
RADAPTIV EBRAKE (Ypage 68 )
RSTEERCONTROL (Ypage 68)
Important safet ynotes
If you fail to adapt your drivin gstyle or if you are
inattentive ,the drivin gsafet ysystems can nei-
ther reduce th eriskofana ccidentnor override
th el aws of physics. Driving safet ysystems are
merely aids designed to assist driving. You are
responsible fo rmaintainin gthe distanc etothe
vehicle in front, fo rvehicle speed, fo rbraking in
goo dtime, and fo rstayin ginl ane. Always adapt
your drivin gstyle to suit th eprevailin groada nd
weather condition sand maintain asafed istanc e
from th evehicle in front. Drive carefully.
The drivin gsafet ysystems described only wor k
as effectively as possible when there is ade-
quat econtac tbetween th etires and th eroad
surface. Please pay special attention to th e
note sont ires ,recommended minimum tire
tread depths, etc. (
Ypage 288).
In wintr ydrivin gconditi ons, always use winte r
tires (M+ Stires )a nd if necessary,s now chains.
Onlyint hiswaywill the driving safety systems
describe dinthissection work as effectively as
possible.
ABS (Anti-lock Brakin gSystem)
General information
ABS regulate sbrake pressure in such awaythat
the wheels do not lock when yo ubrake. This
allows yo utocontinue steering the vehicl ewhen
braking. The
! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goe soutwhen the engine is running.
ABS works from aspeed of about5m ph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, eve nwheny ou
onlyb rake gently.
Important safety notes
iObserve the "Important safety notes "sec-
tio n(Ypage 61).
GWARNING
If ABS is faulty ,the wheels could lock when
braking .The steerability and braking charac-
teristic smaybe severely impaired.A ddition-
ally ,further driving safety systemsa re deac-
tivated.T here is an increased danger of skid-
ding and accidents.
Driv eonc arefully. Hav eABS checked imme-
diately at aquali fied specialist workshop.
Whe nABS is malfunctioning ,othe rsystems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (
Ypage 220 )and dis-
play messages which maybes hown in the
instrument cluster (
Ypage 192).
Braking
XIf ABS intervenes: continue to depress the
brake peda lvigorously unti lthe braking sit-
uatio niso ver.
XTo make afullb rake application: depress
the brake peda lwithf ullf orce.
If ABS intervene swhenb raking ,you will fee la
pulsing in the brake pedal.
The pulsating brake peda lcan be an indication
of hazardousr oadconditions, and functions as a
reminder to take extra car ewhile driving.
BAS (Brak eAssis tSystem)
General information
BAS operates in emergency braking situations.
If yo udepress the brake peda lquickly, BAS
automaticall yboosts the braking force,t hus
shortening the stopping distance.
Driving safety systems61
Safety
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Important safety notes
iObservethe "Importan tsafet ynotes "sec-
tion (Ypage 61).
GWARNIN G
If BA Sism alfunctioning ,the braking distanc e
in an emergenc ybraking situation is
increased. Ther eisariskofana ccident.
In an emergenc ybraking situation ,depress
th eb rak epedal wit hfull force .ABS prevents
th ew heels from locking.
Braking
XKee pthe brak epedal firmly depressed until
th ee mergenc ybraking situation is over.
AB Sp revents th ewheels from locking.
The brakes will function as usual once you
release th ebrak epedal .BAS is deactivated.
Active Brak eAssist
General information
iObserv ethe "Importan tsafet ynotes "sec-
tion (Ypage 61).
Active Brake Assist consist sofadistancewarn-
ing function wit hanautonomous braking func-
tion and situation-dependen tbraking assis-
tance
Active Brake Assist can help you to minimiz ethe
ris kofac ollision wit hthe vehicl etraveling in
fron torr educe th eeffects of suc hacollision .
If Active Brake Assist detects 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 Assist support syou wit hsituation -
dependen tbraking assistance.
Important safety notes
Detection of hazardous situation scan be par-
ticularly impaired if:
Rthere is dirt on th esensor 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
motorbike
Rav ehicl eistraveling in fron tonadifferentlin e
Ryou are driving anew vehicl eorservicing on
th eA ctiv eBrake Assist system has jus tbeen
carrie dout
Observ ethe important safet ynotes in the
"Breaking-in notes" section (
Ypage 121).
Followin gdamag etothefron tend of th evehicle,
hav ethe configuration and operation of th e
radar sensor checke dataqualified specialist
workshop. This also applie stocollision satlow
speeds wher enovisible damag etothefron tof
th ev ehicl eisa pparent.
Activating/deactivating
Active Brake Assist is active after every ignition
cycle.
You can activat eordeactivat eActiv eBrake
Assist (
Ypage 185) in th eon-bo ard computer.
When deactivated, th edistanc ewarning func-
tion and th eautonomous braking function are
also deactivated.
If Active Brake Assist is deactivated, th eæ
symbol appear sintheassistanc egraphic dis-
play.
Distance warning function
Gene ralinformation
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.
Imp ortant safety notes
iObserv ethe "Importan tsafet ynotes "sec-
tion for driving safet ysystems (Ypage 61).
GWARNIN G
The distanc ewarning function does no treact:
Rto people or animals
Rto oncomin gvehicles
Rto crossing traffic
Rwhen cornering
62Driving safety systems
Safety

The distance warning function may not give
warnings in all critical situations. There is a
risk of an accident.
Always pay careful attention to the traffic sit-uation and be ready to brake.
Always adapt your speed to suit the prevailing
road and traffic conditions.
GWARNING
The distance warning function cannot always
clearly identify object sand complex traffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give awarning
There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and do not rely solely on the distance
warning function.
Function
Starting at aspeed of approximately 4mph
(7 km/h), the distance warning function warns
you if you rapidly approach avehicle in front.A n
intermittent warning ton ewill then sound, and
the · distance warning lamp will light up in
the instrument cluster.
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action, provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display awarning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
Up to aspeed of approximately 44 mph
(70 km/h), the distance warning function can
also react to stationary obstacles, such as stop-
ped or parked vehicles.
Autonomous braking function
If the driver does not react to the distance warn-
ing signal in acritical situation, Active Brake
Assist can assist the driver with the autonomous
braking function.
The autonomous braking function:
Rgives the driver more time to react to critical
driving situations
Rcan help the driver to avoid an accident or
Rreduces the effectsofana ccident
Vehicles without Distance Pilot DISTRONIC: the autonomous braking function is available in
the following speed ranges:
R4-65m ph (7-105 km/h) for moving objects
R4-31mph (7-50km/h)for stationary
objects
Vehicles with Distance Pilot DISTRONIC: the
autonomous braking function is available in the
following speedr anges:
R4-124 mph (7 -200 km/h )for moving
objects
R4-31m ph (7-50km/h)for stationary
objects
Due to the nature of the system ,particularly
complicated but non-critical driving conditions
may als ocaus ethe Autonomou sBraking Func-
tion to intervene.
Situation-dependent braking assis-
tance
General information
iObservet he "Important safety notes" sec-
tion (Ypag e61).
With the help of the rada rsensor system ,Adap-
tive Brake Assist can detect obstacles that are in
the path of you rvehiclef or an extended period
of time.
If Adaptive Brake Assist detects arisk of colli-
sion with the vehicleinf ront, it calculatesthe
brake pressure necessary to avoi dacollision. If
you apply the brakes forcefully ,situation-
dependent braking assistance adapts to the sit-
uation and automatically increases the brake
pressure to adegreea ppropriate to the traffic
situation.
Situation-dependent braking assistance pro-
videsb raking assistance in hazardou ssituations
at speeds above 4mph (7 km/h) .Itusesr adar
Driving safety systems63
Safety
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sensor technology to assess the traffic situa-
tion.
Situation-dependent braking assistance is capa-
ble of reacting to moving objects that have
alreadybeen detected as such at least once
over the period of observation, up to vehicle
speeds of around 155 mph (250 km/h).
Situation-dependent braking assistance can
also detect stationary objects, up to vehicle
speeds of around 44 mph (70 km/h).
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally againi f:
Ryou release the brake pedal.
Rthere is no longer any danger ofacollision.
Rno obstacle is detected in front of your vehi-
cle.
Situation-dependent braking assistance is then
deactivated.
Important safety notes
iObserve the "Important safety notes" sec-
tion for driving safety systems (Ypage 61).
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As aresult, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might:
Rintervene unnecessarily
Rnot intervene
There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in anon-critical driving situation.
Due to the nature of the system, complex but
non-critical driving conditions may also cause
Active Brake Assist to intervene.
Even if Active Brake Assist is not available due to
am alfunction in the radar sensor system, the
brake system is still available with full brake
boosting effect and BAS.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-
tion (Ypage 61).
ESP
®monitors driving stability and traction,i .e.
power transmission between the tires and the
road surface.
If ESP
®detects that the vehicle is deviating from
the direction desired by the driver, one or more
wheels are braked to stabilize the vehicle. The
engine output is also modified to keep the vehi-
cle on the desired course within physical limits.
ESP
®assists the driver when pulling awayo n
wet or slippery roads. ESP®can also stabilize
the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-
tion (Ypage 61).
ETS traction control is part of ESP
®.Onv ehicles
with 4MATIC, 4ETS is part of ESP®.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
awaya nd accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 61).
64Driving safety systems
Safety

Characteristics when ESP®is deactivated
If ESP®is deactivatedand oneorm orew heels
start to spin,t he÷ ESP®warning lamp in the
instrumentc lusterflashes. In suchs ituations,
ESP
®will no tstabilizet hevehicle.
If you deactivate ESP®:
RESP®no longer improve sdriving stability.
REnginet orque is no longer limited and the
driv ewheels are able to spin.
RTractio ncontrol is still activated.
RActiv eBrake Assist is no longer available; nor
is it activated if you brak efirmly with assis-
tance from ESP
®.
RSTEER CONTROL is no longer active.
RESP®still provides support when you brake
firmly.
Deactivating/activatin gESP®
(Mercedes ‑AM Gvehicles)
Important safety notes
iObserv ethe "Important safety notes" sec-
tio n(Ypage 61).
You can selectb etween thefollowings tate so f
ESP
®:
RESP®is activated.
RSPORT handlingm ode is activated.
RESP®is deactivated.
GWARNING
When SPORT handlingm ode is activated,
there is agreate rrisk of skiddinga nd acci-
dents.
Only activat eSPORT handlingm ode in thesit-
uations describe dinthefollowing.
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes th evehicle .Thereisani ncreased risk
of skiddinga nd an accident.
Only deactivate ESP
®in th esituations descri-
bed in th efollowing. In th
efollowings ituations,itmay be bette rto
activat eSPORT handlingm ode or deactivate
ESP
®:
Rwhen usings nowc hains
Rind eep snow
Ron sandorg ravel
Ron specially designated roads when th evehi-
cle's own oversteering and understeering
characteristics are desired
Drivin ginSPORT handlingm ode or without
ESP
®requires an extremely qualified and expe-
rienced driver.
iActivate ESP®as soon as th esituations
describe dabovenol onger apply. ESP®will
otherwise no tbeable to stabilizet hevehicle if
th ev ehicle start stoskidoraw heel start sto
spin.
!Avoid spinnin gthe driven wheels for an
extended period with ESP®deactivated. You
coul dotherwise damage th edrivetrain.
Deactivating/activatin gESP®
XTo activate SPORTh andling mode: briefly
pres sbutton :.
The M SPORT handlingm ode warning
lamp in th einstrumentc lusterlightsu p. The
SPORT handling mode
message appearsi n
th em ultifunction display.
XTo deactivat eSPORTh andling mode:
briefly pres sbutton :.
The M SPORT handlingm ode warning
lamp in th einstrumentc lustergoes out.
66Driving safety systems
Safety

XTo deactivate ESP®:press button :until
the å ESP®OFF warning lamp lights up in
the instrument cluster.
The ÷ OFF
message appears in the multi-
functio ndisplay.
XTo activate ESP®:briefl ypress button :.
The å ESP®OFF warning lamp in the
instrument cluster goe sout.T he ÷ ESP®
ONmessage appears in the multifunctio ndis-
play.
Characteristic sofactivatedS PORT han-
dling mode
If SPOR Thandling modeisa ctivatedand one or
more wheels start to spin, the ÷ESP®warn-
ing lamp in the instrument cluster flashes. ESP®
onlys tabilizes the vehicl etoalimite dd egree.
Whe nSPOR Thandling modeisa ctivated:
RESP®onlyimprovesd riving stability to alim i-
ted degree.
RTractio ncontroliss tilla ctivated.
RThe engine's torque is onlyr estrictedtoa
limite ddegreea nd the drive wheels may start
to spin.
The spinning of the wheels results in acutting
action for better tractio nonloose surfaces.
RESP®stil lprovides support when yo ubrake
firmly.
Characteristic swhenE SP®is deactivated
If ESP®is deactivate dand one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster does not flash. In such situa-
tions, ESP
®will not stabilize the vehicle.
If yo udeactivate ESP®:
RESP®no longer improvesd riving stability.
REngine torque is no longer limite dand the
drive wheels are able to spin.
The spinning of the wheels results in acutting
action for better tractio nonloose surfaces.
RTractio ncontroliss tilla ctivated.
RActive Brake Assist is no longer available ;nor
is it activate difyoubrake firmly with assis-
tance from ESP
®.
RESP®stil lprovides support when yo ubrake
firmly.
ESP®trailer stabilization
General information
If your vehicle/trailer combinatio nbegin sto
swerve ,ESP®assists yo uinthissituation. ESP®
slowst he vehicl edownbyb raking and limiting
the engine outputu ntilthe vehicle/trailer com-
bination hass tabilized.
Important safety notes
GWARNING
If roada nd weather conditions are poor,
traile rstabilization will not be able to prevent
the vehicle/trailer combinatio nfrom swerv-
ing .Trailers with ahighc ente rofg ravity can
tip overb efore ESP
®can detect this. There is
ar iskofana ccident.
Alway sadapt your driving style to the prevail-
ing roada nd weather conditions.
If your vehicl ewitht raile r(vehicle/trailer com-
bination) begins to lurch, yo ucan onlys tabilize
the vehicle/trailer combinatio nbydepressing
the brake firmly.
ESP
®traile rstabilization is active above speeds
of about65k m/h.
ESP
®traile rstabilization does not work if ESP®
is deactivate dordisable dbecause of amalfunc-
tion.
EBD (electronicb rake forcedistribu-
tion)
General information
EBD monitors and controls the brake pressure
on the rearw heelstoi mprove driving stability
whil ebraking.
Important safety notes
iObserve the "Important safety notes "sec-
tio n(Ypage 61).
GWARNING
If EBD is malfunctioning ,the rearw heelscan
lock, e.g .under ful lbraking .Thisi ncreases the
ris kofs kidding and an accident.
Driving safety systems67
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