2018 MERCEDES-BENZ CLA COUPE brake

Rear wheel
XBring thevehicl eand wheels int oasuitable
position so that you can attach test gage A.
XSecurethe vehicl eagainst rollin gaway
(Ypage 141).
XEngage park position P.
XSwitchoff th eengine.
XPlac etestg age Abetween th ewheel's
spoke sonb rakepad/lining =.
XHold test gage Averticall yonb rak edisc :
and slid emeasurin gpin; onto brak e
disc :.
XChec kwhichc olor field ?thea rrow on
measurin gpin; is pointing to .
Green: theb rak epad/lining thickness is suf -
ficient.
Red :th eb rak epad/lining thickness is no t
sufficient. Hav ethe brak epads/lining
checke dataq ualified specialist workshop.
To avoi daninaccurat emeasurement:
Rmak esurey ou position th ewheels suitably
Rdo no tput th emeasurin gpin on arecess in
th eb rak edisc
Driving on wet roads
Hydroplaning
If water has accumulated to acertai ndept hon
th er oad surface, there is adanger of hydro-
planing occurring, eve nif:
Ryou driv eatlow speeds
Rthet ires hav eadequat etread dept h
Fo rthisr eason ,intheevent of heav yrain or in
condition sinwhichh ydroplaning may occur ,
you mus tdriveint hefollowin gmanner:
Rlower your spee d
Ravoidruts
Ravoi dsudde nsteering movement s
Rbrakecarefully
Driving on flooded roads
!Do no tdrivet hroug hflooded areas .Chec k
th ed ept hofa ny water before driving throug h
it .D rive slowly throug hstanding water. Oth-
erwise, water may ente rthe vehicl einterior or
th ee nginec om partment. This can damag e
th ee lectronic component sintheengin eor
th ea utomatic transmission .Water can also
be drawn in by th eengine's air suction nozzles
and this can caus eengined amage.
Winter driving
GWARNIN G
If you shif tdown on aslipper yroad surfac ein
an attemp ttoincreas ethe engine's braking
effect, th edrivew heels could lose their grip.
There is an increased danger of skiddin gand
accidents .
Do no tshif td own for additional engin ebrak -
ing on aslipper yroad surface.
GDANGER
If th eexhaust pipe is blocke doradequat e
ventilation is no tpossible, poisonous gase s
suc hasc arbon monoxide (CO) may ente rthe
vehicle. This is th ecase, e.g. if th evehicl e
become strapped in snow. There is arisko f
fatal injury.
148Driving tips
Driving and parking

If you leave the engine or the auxiliary heatingrunning, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have you rvehicle winter-proofed at aqualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and
braking maneuvers. Do not use cruise control or Distance PilotD ISTRONIC.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
XShift the transmission to position N.
XTry to bring the vehicle under control using
corrective steering.
The outsidet emperature indicator is not
designed to serve as an ice-warning device and is therefore unsuitable for that purpose.
Changes in the outsidet emperature are dis-
played after ashort delay.
Indicated temperature sjust above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in
woodeda reasoronb ridges.
You shoul dpay speciala ttention to road condi-
tions when temperature sare around freezing
point.
For more information on driving with snow
chains, see (
Ypage 290).
For more information on driving with summer
tires, see (
Ypage 289).
Observe the notes in the "Winter operation" sec-
tion (
Ypage 289).
Drivin gsystems
Cruise control
General notes
Cruise control maintains aconstant road speed
for you .Itbrakes automatically in order to avoid
exceeding the set speed.Onl ong and steep
downhill gradients, especially if the vehicle is
laden, you must select alow gear in good time.
You need to shift manually using the steering
wheel paddle shifters beforehand. By doing so,
you willm ake use of the braking effect of the engine. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
When the engine is running, you can use the
cruise control lever to limitt
he speed to any
speed between20m ph (30 km/h)and the tech-
nicallyp ermitted maximum speed of the vehicle.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain asteady
speed for aprolongedp eriod.
The speed indicated in the speedometer may
differ slightly from the speed stored.
Important safety notes
If you fail to adapt you rdriving style, cruise con-
trol can neither reduce the risk of an accident
nor override the lawsofp hysics. Cruise control
cannot take into account the road, traffic and
weather conditions. Cruise control is only an
aid.Y ou are responsible for the distance to the
vehicle in front, for vehicle speed,f or braking in
good time and for staying in you rlane.
Do not use cruise control:
Rin road and traffic conditions which do not
allow you to maintain aconstant speed,e .g. in
heavy traffic or on winding roads
Ron slippery road surfaces .Braking or accel-
erating could cause the drive wheelstol ose
traction and the vehicle could then skid
Rin poor visibility, e.g. due to fog, heavy rain or
snow
If there is achange of drivers, advise the new
driver of the speed stored.
Cruise control lever
:Activates or increases speed
;Activates or reduces speed
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=Deactivatescruis econtrol
?Activate satthe current speed/las tstored
speed
When yo uactivate cruis econtrol, the stored
spee diss hown in the multifunctio ndisplay for
fiv es econds.
Activatio nconditions
To activate cruis econtrol, al lofthe following
activatio nconditions must be fulfilled:
Rthe electri cparkin gb rake must be released.
RESP®must be active, bu tnot intervening.
Rthe transmission must be in position h.
Storing, maintainingand callin gupa
speed
Storin gand maintainin gthe current
speed
Yo uc an stor ethe current spee difyouared riv-
ing faster than20m ph (30 km/h).
XAccelerate the vehicl etothe desired speed.
XBrieflypress the cruis econtro llev er up :or
down ;.
XRemov eyourfoo tfromt he accelerator pedal.
Cruise contro lisactivated .The vehicl eauto-
maticall ymaintains the stored speed.
iCruise contro lmaybe unabl etomaintain
the stored spee donuphillgradients .The
stored spee disresumed when the gradient
evens out. Cruise contro lmaintains the
stored spee dondownhil lgradients by auto-
maticall yapplyin gthe brakes.
Storin gthe curren tspeed or callin gupthe
las tstored speed
GWARNING
If yo ucallupt he stored spee dand it differs
fromt he current speed, the vehicl eacceler-
ate sord ecelerates. If yo udonot know the
stored speed, the vehicl ecould accelerate or
brake unexpectedly .There is ariskofana cci-
dent.
Pa ya ttentio ntothe roa dand trafficc ondi-
tions beforec alling up the stored speed. If you
do not know the stored speed, stor ethe
desired spee dagain .
XBriefl ypullt he cruis econtro llev er towards
you ?.
XRemov eyourfoo tfromt he accelerator pedal.
The first time cruis econtro lisactivated ,it
stores the current spee dorregulate sthe
spee doft he vehicl etothe previously stored
speed.
Settin gaspeed
Keepinm indt hatitm aytake abrief moment
unti lthe vehicl ehasaccelerated or braked to
the spee dset.
XTo adjustt he setspeed in 5mph incre-
ments (10k m/h increments): briefly press
the cruise control lever up :past the pres-
sure point for ahigher speed, or down ;for
al ower speed.
XTo adjust the set speed in 1mphincre-
ments (1 km/h increments): briefly press
the cruise control lever up :to the pressure
point for ahigher speed, or down ;for a
lower speed.
iCruise control is not deactivated if you
depress the accelerator pedal. For example, if
you accelerateb riefly to overtake, cruise con-
trol adjusts the vehicle's speed to the last
speed stored after you have finished overtak-
ing.
Deactivating cruise control
There are several ways to deactivate cruise con-
trol:
XBriefly press the cruise control lever forwards
=.
or
XBrake.
Cruise control is automatically deactivated if:
Rthe vehicle is secured with the electric park-
ing brake
Ryou are driving at less than 20 mph (3 0km/ h)
RESP®intervenes or yo udeactivate ESP®
Ryous hift the transmission to position i
whil edriving
If cruis econtro lisdeactivated ,you will hear a
warning tone.Y ouwill see the Cruise Con‐
trolOffmessage in the multifunctio ndisplay
for approximately fiv eseconds.
150Driving system s
Driving an dparking

iWhen you switch off the engine, the last
speed stored is cleared.
Distance Pilot DISTRONIC
General notes
Distance Pilot DISTRONIC regulates the speed
and automatically helps you maintain the dis-
tanc etot he vehicle detected in front. Vehicles
are detected with the aid of the radar sensor
system. Distance Pilot DISTRONIC brakes auto-
matically to avoid exceedingt he set speed or to
maintain the designated distanc efrom the vehi-
cle in front.
If Distance Pilot DISTRONIC detect sthat there is
ar isk of acollision, you will be warned visually
and acoustically. Without your intervention, Dis-
tanc ePilot DISTRONIC cannot prevent acolli-
sion. An intermittent warning ton ewill then
sound and the distanc ewarning lamp will light
up in the instrument cluster. Brake immediately
in order to increase the distanc etothe vehicle in
frontort ake evasive action provided it is safe to
do so.
Distance Pilot DISTRONIC operates in the range
between 0mph (0 km/h) and 120 mph
(200 km/h).
Change into alower gear in good time on long
and steep downhill gradients .This is especially
importan tifthe vehicle is laden. By doing so, you
will make use of the braking effect of the engine.
This relieves the load on the brake system and
preventst he brakes from overheatin gand wear-
ing too quickly.
Do not use Distance Pilot DISTRONIC on roads
with steep gradients.
For Distance Pilot DISTRONIC to assist you
when driving, the radar sensor system must be
operational.
Sinc eDistance Pilot DISTRONIC transmits radar
waves, it can resemble the radar detectors of
the responsible authorities. You can refer to the
relevant chapter in the Operator' sManual if
questions are asked about this.
iUSA only: This device has been approved by
the FCC as a"Vehicular Radar System". The
radar sensor is intended for use in an auto-
motive radar system only. Removal, tamper-
ing, or altering of the device will void any war-
ranties, and is not permitted by the FCC. Do not tamper with, alter, or use in any non-
approved way.
An
yu nauthorized modification to this device
could void the user's authority to operate the
equipment.
iCanada only: This device complies wit h
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause interference,
and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the device
will void any warranties, and is not permitted. Do not tamper with, alter, or use in any non-
approved way.
An yu nauthorized modification to this device
could void the user's authority to operate the
equipment.
Important safety notes
GWARNING
Distance Pilot DISTRONIC does not react to:
Rpeople or animals
Rstationary object sonthe road, e.g. stopped
or parked vehicles
Roncoming vehicles and crossingt raffic
As aresult, Distance Pilot DISTRONIC may
neither give warnings nor intervene in such
situations. There is arisk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
GWARNING
Distance Pilot DISTRONIC cannot always
clearly identif yother road users and complex
traffic situations.
In such cases, Distance Pilot DISTRONIC may:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give awarning nor intervene
Raccelerateorb rake unexpectedly
There is arisk of an accident.
Driving systems151
Driving and parking
Z

Continue todrivecarefull yand beread yto
brake, especiall yifDistance Pilot DI STRONIC
warn syou.
GWAR NING
Distance Pilot DI STRONICb rakes your veh icle
wit hupt o50% of th emaximum possible
deceleration. Ifth is deceleratio nisnotsuff i-
cient ,Distance Pilot DI STRONICa lertsyou
wit hav isual and acoustic warning.Thereisa
ris kofana cciden t.
Ap ply theb rakes yourself inthese situations
and tr ytot akee vasive action.
!When Distance Pilot DI STRONICo rthe
HOLD function isactivated, th evehicle
brakes automaticall yincertain situations.
To avoid damag etotheveh icle,deactivate
Distance Pilot DI STRONICa nd theHOLD
function inthef ollowin gors imilar situations:
Rwhen to wingthev ehicle
Rinthec ar wash
If you fail to adapt your driving style, Distance
Pilot DI STRONICc an neither reduce th erisko f
an acc identnor overr idethel aws of physics.
Distance Pilot DISTRONICc annottak ei nto
accountr oad,weather or traff icconditions .Dis-
tance Pilot DI STRONICi sonlyana id.You are
responsible for thedistanc etotheveh icle in
front, for veh iclespeed, for braking ingood time
and for staying inyour lane.
Do no tuse Distance Pilot DI STRONIC:
Rinroad and traff icconditions whichdon ot
allow you to maintain aconstant speed,e.g.in
heavyt raffic or on winding roads
Ronslipp ery road surfaces .Brakin gora ccel-
erating could caus ethe driv ewheelstol ose
t
raction and th evehicle could then skid
Rwhen there ispoor vis ibility, e.g .due to fog,
heavyr ain or snow
Distance Pilot DI STRONICm ay notdetect nar-
row veh iclesdriving infront, e.g .motorcycles, or
veh iclesdriving on adifferent line.
In particular ,the detection of obstacle scan be
impaired if:
Rthere is dirt on thesensorsora nythingelse
covering th esensors
Rthere issnow or heavyr ain
Rthereisinterferenc ebyother radar sources
Rthere are stron gradar reflections ,for exam-
ple, in parking garages
If Distance Pilot DI STRONICn olonger detect sa
vehicle in front, itmay unexpect edlyaccelerate
to th espeeds tored.
This speedm ay:
Rbetooh igh ifyou are driving inaf ilter lane or
an exit lane
Rbeso high when driving inther ight-handl ane
that you overtake vehicle sintheleft-hand
lane
Rbe so high in th eleft lane that you pass vehi-
cle sd riving in th erigh tlane
If there isac hang eofd rivers,adviset henew
driv er of th espeeds tored.
Cruise control lever
:St ore sthe curren tspeedorah igher speed
;Storesthe curren tspeedoral ower speed
=Deactivates Distance Pilot DI STRONIC
?Store sthe curren tspeedorc alls up thelast
store dspeed
ASet sas pecifie dminimum distance
Activating Distance Pilot DISTRONIC
Activation conditions
!When Distance Pilot DI STRONICort he
HOLD function isactivated, th evehicle
brakes automaticall yincertain situations.
To avoid damag etothevehicle ,deactivate
Distance Pilot DI STRONICa nd theHOLD
function in th efollowin gors imilar situations:
Rwhen towing th evehicle
Rin th ecar wash
152Driving systems
Driving and parking

To activate Distance Pilot DISTRONIC, the fol-
lowing conditions must be fulfilled:
Rthe engine must be started. It may take up to
two minutes of driving before Distance Pilot
DISTRONIC is ready for use.
Rthe electric parking brake must be released.
RESP®must be active, but not intervening.
RParking Pilot must not be activated.
Rthe transmission must be in positionh.
Rthe driver's door must be closed when you
shift fromjtoh or your seat belt must be
fastened.
Rthe front-passenger door must be closed.
Rthe vehicle must not skid.
Activating
XBriefly pull the cruise control lever towards
you ?,u p: or down ;.
Distance Pilot DISTRONIC is activated.
XKeep the cruise control lever pressed up :or
down ;until the desired speed is set.
XRemove your foot from the accelerator pedal.
Your vehicle adapts its speed to that of the
vehicle in front,b ut only up to the desired
stored speed.
iIf you do not fully release the accelerator
pedal, the DistancePilotSuspendedmes-
sage appears in the multifunction display.T he
set distance to aslower-movingv ehicle in
front will then not be maintained. You will be
driving at the speed you determin ebythe
position of the accelerator pedal.
You can also activate Distance Pilot DISTRONIC
when stationary. The lowest speed that can be
set is 20 mph (3 0km/ h).
Drivin gwithD istance Pilo tDISTRONI C
Activating at th ecurrent speed/last
stored speed
GWARNING
If you cal lupthestored speed and it differs
from th ecurren tspeed, th evehicle acceler -
ates or decelerates. If you do no tknowt he
stored speed, th evehicle could accelerat eor
brake unexpectedly. There is ariskofana cci-
dent.
Pay attention to th eroada nd traffic condi-
tion sbefor ecallin gupt hestored speed. If you
do no tknowt he stored speed, stor ethe
desire dspeed again .
XBriefly pull th ecruise contro llever toward s
you ?.
XRemov eyour foot from th eaccelerator pedal.
The first time Distanc ePilotD ISTR ONIC is
activated, it stores th ecurren tspeed or reg -
ulates th espeed of th evehicle to th eprevi-
ousl ystore dspeed.
Pullin gawaya nd drivin g
XIf you wan ttopulla wa yw ithD istance
Pilo tDISTRONIC: removeyour foot from th e
brake pedal.
XBriefly pull th ecruise contro llever toward s
you ?.
or
XIf Distance Pilo tDISTRONI Cisactivated:
accelerat ebriefly.
Your vehicle pulls away and adapt sits speed
to that of th evehicle in front. If no vehicle is
detecte dinfront,your vehicle accelerates to
th es et speed.
The vehicle can also pull away when it is facin g
an unidentifie dobstacl eorisd rivingonad iffer-
en tlinef roma nother vehicle. The vehicle then
brake sautomatically. Be ready to brake at all
times .
If there is no vehicle in front, Distanc ePilot
DISTRONIC operates in th esam ew ay as cruise
control.
If Distanc ePilotD ISTR ONIC detects aslower -
movin gvehicle in front, it brake syour vehi
cle. In
this way, th edistanc eyou hav eselecte dismain-
tained.
If Distanc ePilotD ISTR ONIC detects afaster-
movin gvehicle in front, it increase sthe drivin g
speed. However, th evehicle is only accelerated
up to th espeed you hav estore d.
iDistanc ePilotD ISTR ONIC is deactivated
when you depress th ebrake ,excep twhen th e
vehicle is stationary.
Selecting th edrive program
Distanc ePilotD ISTR ONIC supports asport y
drivin gstyle when you selec tthe S+ drive pro -
gram (
Ypage 134) or th emanual drive program
(Ypage 136). Acceleration behin dthe vehicle in
fron tortot heset speed is then noticeably more
dynamic .Ifyou hav eselecte dthe E(Mercedes-
AM Gvehicles :C)d rive program, th evehicle
Driving systems153
Driving an dparking
Z

acceleratesmoreg ently. This settin gisrecom-
mended in stop-and-start traffic.
Changing lanes
If when driving on multilane roads you wish to
chang etotheovertakin glane ,Distance Pilot
DISTRONIC support syou if:
Ryou are driving faster than 45 mph (70 km/h)
RDistance Pilo tDISTRONICi smaintaining the
distance to avehicl einf ront
Ryous witch on the appropriate tur nsignal
RDistance Pilo tDISTRONICd oesn ot currently
detect adangerofc ollision
If these conditions ar efulfilled ,you rv ehicl eis
accelerated .Acceleratio nwillbei nterrupte dif
changing lanes take stoo long or if the distance
between your vehicl eand the vehicl einfront
become stoo small.
Stopping
If Distance Pilo tDISTRONICd etects thatt he
vehicl einfront is stopping, it brakes your vehicle
unti litiss tationary.
Once your vehicl eisstationary, it remains sta-
tionar yand yo udon ot nee dtodepress the
brake.
iAfter atime ,the electri cparkin gb rake
secures the vehicl eand relieves the service
brake.
iDepending on the specifie dminimu mdis-
tance ,you rvehicl ewillc ome to astandstil lat
as ufficient distance behind the vehicl ein
front. The specifie dminimu mdistance is set
using the contro lonthe cruis ec
o
ntro llev er.
When Distance Pilo tDISTRONICi sactivated,
the transmission is shifted automaticall yto
position jif:
Rthe driver's sea tbeltisn ot fastened and the
driver's door is open.
Rthe engine is switched off ,unless it is auto-
maticall yswitched off by the ECO start/stop
function.
The electri cparkin gb rake secures the vehicle
automaticall yifDistance Pilo tDISTRONICi s
activated when the vehicl eisstationar yand:
Ras ystem malfunctio noccurs.
Rthe powe rsuppl yisi nsufficient.
If am alfunctio noccurs, the transmission may
also shift to position jautomatically.
Settin gaspeed
Keepinm indt hatitm aytake abrief moment
unti lthe vehicl ehasaccelerated or braked to
the spee dset.
XPress the cruis econtro llev er up :for a
highe rspeed or down ;for alower speed.
XTo adjustt he setspeed in 1mph incre-
ments (1 km/hi ncrements): brieflypress
the cruis econtro llev er up :or down ;to
the pressure point.
The last stored spee dincreases or decreases
in 1m ph (1 km/h )increments.
XTo adjustt he setspeed in 5mph incre-
ments (10k m/h increments): briefly press
the cruise control lever up :or down ;
beyond the pressure point.
The last stored speed increases or decreases in 5m ph (10 km/h) increments.
iDistance Pilot DISTRONIC is not deactivated
if you depress the accelerator pedal. If you
acceleratetoo vertake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over- taking.
Setting aspecified minimum distance
You can set the specified minimum distanc efor
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distanc ethat
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, dependen tonvehicle speed. You
can see this distanc einthe multifunction dis-
play (
Ypage 161).
The specified minimum distanc ecan be
changed while Distance Pilot DISTRONIC is
switched on or off.
iMake sure that you maintain the minimum
distanc etothe vehicle in frontasr equired by
law. Adjust the distanc etothe vehicle in front
if necessary.
154Driving systems
Driving and parking

XTo increase:turn control=in direction ;.
Distance Pilo tDISTRONIC then maintains a
greate rdistance between your vehicl eand
the vehicl einfront.
XTo decrease: turn control=in direction :.
Distance Pilo tDISTRONIC then maintains a
shorter distance between your vehicl eand
the vehicl einfront.
Deactivating Distance Pilo tDISTRONIC
There are severa lwaystod eactivate Distance
Pilo tDISTRONIC:
XBriefly press the cruis econtroll ever for-
wards :.
or
XBrake, unless the vehicl eisstationary
XBriefly press the cruis econtroll ever for-
wards :.
or
XBrake, unless the vehicl eisstationary
Whe nyou deactivate Distance Pilo tDISTRONIC,
the Distance Pilot Off
message appears in
the multifunctio ndisplay for approximatelyf ive
seconds.
iThe last speed stored remains stored until
yo us witch off the engine. Distance Pilot DISTRONIC is not deactivate
difyoudepress
the accelerato rpedal.
Distance Pilo tDISTRONIC is automaticall ydeac-
tivated if:
Ryo ue ngage the electri cparking brake or if the
vehicl eisautomaticall ysecured with the elec-
tric parking brake
RESP®intervene soryoudeactivate ESP®
Rthe transmission is in position j,kori
Ryoup ullt he cruis econtroll ever toward syou
in order to pull away and the front-passenger
door or one of the reard oors is open
Rthe vehicl eisskidding
Ryous witch on Parking Pilot
If Distance Pilo tDISTRONIC is automatically
deactivated, yo uwillh earaw arning tone. The
Distance Pilot Off
message appears in the
multifunctio ndisplay for approximatelyf ives ec-
onds.
Distance Pilo tDISTRONIC is also automatically
deactivate dwheny ou activate DSR. The Ã
DSR symbo lappea rs in the multifunctio ndis-
play.
Distance Pilo tDISTRONICd isplaysin
the instrument cluster
Displays in the speedometer
Whe nDistance Pilo tDISTRONIC PLUSisa ctiva-
ted and ther eare no vehicles detectedinf ront,
one or two segments ;in the set speed range
light up.
If Distance Pilo tDISTRONIC detects avehicl ein
front, segments ;between speed of the vehi-
cle in front =and stored speed :light up.
iFor design reasons,t he speed displayed in
the speedometer mayd iffer slightlyf rom the
speed set for Distance Pilo tDISTRONIC.
Driving systems155
Driving an dparking
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