2018 MERCEDES-BENZ CLA COUPE sensor

Activating ATTENTION ASSIST
XActivateATTEN TION ASSIST usin gthe on-
boar dcom puter (Ypage 185).
The system determine sthe attention level of
th ed river depending on th esetting selected:
Standard
selected: th esensitivit ywithw hich
th es ystem determine sthe attention level is set
to normal.
Sensitive
selected: th esensitivit yisset
higher. The attention level detecte dbyAttention
Assis tisadapted accordingly and th edriver is
warned earlier .
When ATTENTION ASSIST is deactivated, th e
é symbol appear sinthemultifunction dis-
play in th eassistanc egraphic display.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after th eengine
has been stopped. The sensitivit yselected cor-
responds to th elast selection activated (stand -
ard/sensitive).
Warn ing in th emultifunction display
If fatigue or increasing lapse sinconcentratio n
are detected, awarning appear sinthemulti-
function display: ATTENTION ASSIST
TakeaBreak!.
In addition to th emessage shown in th emulti-
function display, you will then hear awarning
tone .
XIf necessary, tak eabreak.
XConfir mthemessage by pressing th ea
butto nont hesteering wheel.
On lon gjou rneys, tak eregular breaks in goo d
time to allow yourself to res tproperly. If you do
no ttak eab reak and ATTENTION ASSIST still
detects increasing lapse sinconcentration, you
will be warned again after 15 minute satthe
earliest .This will only happen if ATTEN-
TIO NA SSIS Tstill detects typical indicators of
fatigue or increasing lapse sinconcentration.
Vehicles wit hthe COMAND multimedi asys-
tem :if aw arning is output in th emultifunction
display, aservic estation search is performed in
th em ultimedia system. You can select aservic e
station and navigation to this servic estation will
then begin. This function can be activated or
deactivated in th emultimedia system; see th e
Digital Operator' sManual.
Lan eTracking package
Gene raln otes
The Lan eTracking packag econsists of Blind
Spot Assis t(Ypage 172) and Lan eKeepin g
Assis t(Ypage 174).
Blind Spot Assist
Generalnotes
Blind Spot Assis tmonitors th eareas on either
side of th evehicl ethata re no tvisible to th e
driver wit htwo lateral ,rear-facin gradar sen -
sors. Awarning display in th eexter iorm irror s
draw syour attention to vehicles detecte dinthe
monitore darea. If you then switch on th ecor-
respondin gturns ignal to chang elane, you will
also receiv eanoptical and audible warning .
Blind Spot Assis tsupport syou from aspee dof
approximately 20 mph (30 km/h).
Important safety notes
GWARNIN G
Blind Spot Assis tdoes no treac tto:
Rvehicles overtake ntoo closely on th eside ,
placing them in th eblinds pota rea
Rvehicles whic happroac hwithal argespee d
differential and overtake your vehicl e
As aresult ,Blind Spot Assis tmay no tgive
warning sinsuchs ituations. There is arisko f
an accident.
Always observ ethe traffic condition scare-
fully, and maintai nasafel ateral distance.
Blind Spot Assis tisonlyana id. It may fail to
detec tsom evehicles and is no substitut efor
attentive driving. Always ensur ethatthe re is
sufficien tdistanc etotheside for other road
user sand obstacles.
iUS Ao nly:
This device has been approve dbytheFCC as
a" Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removing, tampering with, or
altering th edevice will voi dany warranties,
and is no tpermitte dbytheFCC. Do no ttam -
per with, alter, or use in any non-approve d
way.
172Driving systems
Driving and parking

Any unauthorized modification to thisdevice
could voidt he user’sauthority to operate the
equipment.
Radar sensors
The rada rsensors for Blind Spo tAssist ar einte-
grated into the rea rbum per. Make sure thatt he
bumpers ar efreef rom dirt, ice or slush. The
sensors must not be covered ,for exampl eby
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the functio nofthe rada rsensors
checked at aquali fied specialist workshop.
Blind Spo tAssist maynol ongerw orkp roperly.
Monitorin grang eoft he sensors
In particular, the detection of obstacle scan be
impaired if:
Rther eisd irtont he sensors or anything else
covering the sensors
Rther eisp oorvisibility ,e.g.d ue to fog ,heavy
rain or snow
Ran arrow vehicl etraveling in front, e.g .a
motorbike or bicycle
Rthe roadh asver yw idel an es
Rthe roadh asnarrow lanes
Ryoua renot driving in the middl eofthe lane
Rtherearebarriers or othe rroadb oundaries
Vehicles in the monitoring range ar ethen not
indicated.
Blind Spo tAssist monitors the area up to 10 ft
(3 m) behind your vehicl eand directl ynext to it.
If the lanes ar enarrow,v ehicles driving in the
lane bey
ond the lane next to your vehicl
emaybe
indicated,e specially if the vehicles ar enot driv-
ing in the middl eoftheirlan e. Thi smaybe the
cas eift he vehicles ar edriving on the inne rside
of thei rlan e.
Due to the nature of the system:
Rwarning smaybe issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarning smaybe interrupte dwheny ou are
driving alongsid eparticularly long vehicles,
such as trucks, for aprolongedt ime.
Warning display
:Warning display
Blind Spo tAssist is not active at speed sbelow
approximately20m ph (30 km/h). Vehicles in
the monitoring range ar ethen not indicated.
Whe nBlind Spo tAssist is activated,i ndicator
lamp :in the exterio rmirrors lights up yellow
at speed sofupto20m ph (30 km/h). At speeds
above 20 mph (30 km/h), the indicator lamp
goe soutand Blind Spo tAssist is operational.
If av ehicl eisd etectedw ithint he blind spot
monitoring range at speed sabove 20 mph
(30 km/h), warning lamp :on the correspond-
ing side lights up red .Thisw arning is always
emitted when avehicl eenters the blind spot
monitoring range from behind or from the side.
Whe nyou overtake avehicle, the warning only
occurs if the difference in speed is less than
7m ph (12 km/h).
The yellow indicator lamp goe soutif reverse
gear is engaged .Inthise vent, Blind Spo tAssist
is no longera ctive.
The brightness of the indicator/warning lamps
is adjusted automaticall yaccording to the ambi-
ent light.
Collisio nwarning
Ifav ehicl eisd etectedint he monitoring range of
Blind Spo tAssist and yo uswitch on the corre-
sponding turn signal, adouble warning tone
sounds. Re dwarning lamp :flashes. If the turn
signalr emains on, vehi
cles detecteda
reindica-
ted by the flashing of red warning lamp :.
There ar enofurtherw arning tones.
Driving systems173
Driving an dparking
Z

Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate dinthevehi-
cle when driving ,you may be distracte dfrom
th et raffic situation .You could also lose con-
trol of th evehicle. Ther eisariskofana cci-
dent.
Only operate this equipmen twhen th etraffic
situation permits. If you are no tsuret hatthis
is possible ,park th evehicl epayin gattention
to traffic condition sand operate th eequip-
men twhen th evehicl eiss tationary.
You must observ ethe legal requirements for th e
country in whic hyou are currentl ydriving when
operating th eon-bo ard computer.
GWARNIN G
If th einstrumen tcluste rhas faile dormal-
functioned, you may no trecognize function
restriction sinsystems relevan ttosafety. The
operating safet yofyour vehicl emay be
impaired .Ther eisar iskofana ccident.
Drive on carefully. Hav ethe vehicl echecked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows message sor
warning sfromc ertai nsystems in th emultifunc-
tion display. You should therefor emakes ure
your vehicl eisoperating safely at all times .
If th eoperating safet yofyour vehicl eis
impaired ,pull ove rassoonasitiss afetodos o.
Contac taqualified specialist workshop.
Fo rano verview, see th einstrumen tpanel illus-
tration (
Ypage 33).
Display sand operation
Instrumen tcluster lighting
The ligh tsensor in th einstrumen tcluste rauto -
matically control sthe brightness of th emulti-
function display. In daylight, th edisplays in th e
instrumen tcluste rare no tilluminated. The lighting in th
einstrumen tcluster, in th edis-
plays and th econtrols in thevehicl einterior can
be adjusted usin gthe brightness control knob.
The brightness control knob is locate donthe
botto mleftoft heinstrumen tcluste r
(
Ypage 33).
XTurn th ebrightness control knob clockwise or
counter-clockwise.
If th eligh tswitch is set to th eÃ, Tor
L position ,the brightness is dependen t
upon th ebrightness of th eambien tlight.
Speedometer with segments
The speedometer is divided int osegments on
vehicles wit hDistance Pilot DISTRONIC.
The segments in th espeedometer indicat e
whic hspee drange is available.
RDistanc ePilot DISTRONI Cisactivated
(Ypage 151):
On eort wo segments in th eset spee drange
ligh tup.
RDistanc ePilot DISTRONI Cdetects avehicl ein
fron tmoving mor eslowly than th estored
speed:
The segments between th espee doft hevehi-
cle in fron tand th estoreds pee dligh tup.
Tachometer
!
Do no tdriveint heoverrevving range, as this
could damag ethe engine.
The red ban dinthetachometer indicates th e
engine's overrevving range.
The engin eislimite dwithin arange to protect
th ee nginew hen th ered ban disreached.
Outsidet emperatur edisplay
You should pay special attention to road condi-
tion swhen temperatures are aroun dfreezing
point.
Bea rinm indt hatthe outside temperature dis-
play indicates th etem perature measured and
does no trecord th eroad temperature.
The outside temperature display is in th emulti-
function display (
Ypage 179).
176Displaysand operation
On-boardc omputer and displays

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up and th ered F (USAonly)
or ! (Canada only) indicator lamp flashes .
It is no tpossibl etoapply th eelectric parking brak emanually.
XShift th etransmission to position B.
XVisitaqualified specialist workshop .
$(USAonly)
J(Canada only)
Check Brake Fluid
Level
There is no tenough brak efluidint hebrak efluid reservoir .
Aw arning tone sounds. The $(USAonly) or J (Canada only)
warning lamp sintheinstrumen tcluste rmay also ligh tup.
GWARNIN G
The braking effec tmay be impaired.
There is ariskofana ccident.
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions. Do no tcontinue driving
under any circumstances.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrect them alfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
XVisit aqualified specialist workshop .
G
Inoperative
Oneorm orem ain features of th embrace system are malfunctioning .
XVisitaqualified specialist workshop .
ActiveBrakeAssistFunctionsCurrentlyLimitedSee Opera‐tor's Manual
Active Brake Assis tistemporarily inoperative.
Possibl ecauses are:
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation .
RThe system is outside th eoperating temperature range.
RThe on-boar dvoltag eistoolow.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Active Brake Assis tisoperational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XRestart th eengine.
Active BrakeAssist :SystemInop‐erative
Active Brake Assis tisunavailable due to amalfunction .Situation -
dependen tbraking assistanc emay also hav efailed.
XVisit aqualified specialist workshop immediately.
Display messages197
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
RadarSensorsDirtySee Operator' sMan‐ual
The radar sensor system is malfunctioning .
Possibl ecauses are:
RDirt on sensor s
RHeavy rain or snow
RWhendrivin goni nter-urban roads without traffic or infrastructure,
e.g. in desert-like area s
At least on edrivin gsystem or drivin gsafet ysystem is malfunctioning
or is temporarily unavailable :
RActive Brake Assist
RDistancePilotD ISTR ONIC
Aw arning tone also sounds.
Once th ecaus eoft heproblem is no longer present, th edrivin gand
drive safet ysystems will be available again .The display message dis-
appears.
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XSwitc hoff th eengine.
XClean all sensor s(Ypage 265).
XRestart theengine.
The display message disappears.
6
SRSMalfunctionSer ‐viceRequired
The restrain tsystem is malfunctioning .The 6 warning lamp also
lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbetriggered .
There is an increased ris kofinjury.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th erestrain tsystem, see (
Ypage 40).
6
Front Lef tMalfunc‐tionServic eRequiredorFrontRight MalfunctionServic eRequired
The restrain tsystem is malfunctioning at th efront on th eleftorr ight.
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbetriggered .
There is an increased ris kofinjury.
XVisit aqualified specialist workshop immediately.
198Display messages
On-boardc omputer andd isplays

Display messagesPossible causes/consequences andMSolutions
b
Check Front LeftSidemarkerLampor
Check Front Right
Sidemarke rLamp
The fron tleft-han dorfrontright-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
Check RearLeftSidemarke rLampor
Check Rea rRight
Sidemarke rLamp
The rear left-han dorrear right-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
Check LeftDaytim eRunnin gLightor
CheckRightDaytim eRunningLight
The lef torright-hand daytime runnin glamp is faulty.
XChec kwhether you are permitte dtoreplace th ebulb yourself
(Ypage 104).
or
XVisit aqualified specialist workshop .
b
Malfunction SeeOperator'sManual
The exterio rlighting is malfunctioning .
XVisitaqualified specialist workshop .
b
AutoLampF unctionInoperative
The ligh tsensor is defective.
XVisit aqualified specialist workshop .
b
Switch Off Lights
The lights are still switched on when you leav ethe vehicle. Awarning
tone also sounds.
XTurn th eligh tswitch to th eà position .
b
Switch On Headlamps
You are drivin gwithl ow-beam headlamp sswitched off .
XTurn theligh tswitch to th eL orà position .
Adaptive HighbeamAssist CurrentlyUnavailable SeeOperator' sManual
Adaptive Highbea mAssistisd eactivated and temporarily inoperative.
Possibl ecauses are:
RThe windshield in th ecamera' sfield of vision is dirty.
RVisibilit yisimpaire ddue to heav yrain ,sno worf og.
XClean th ewindshield.
If th esystem detects that th ecamera is full yoperational again ,the
Adaptive
HighbeamAssistNowAvailablemessage is displayed.
Adaptive Highbea mAssistiso perational again .
Adaptive HighbeamAssist InoperativeAdaptive Highbea mAssistisf aulty.
XVisit aqualified specialist workshop .
204Display messages
On-boardcomputer andd isplays

Display messagesPossible causes/consequences andMSolutions
LaneKeepin gAssistCurrently Unavaila‐ble See Operator' sManual
LaneKeepin gAssistisd eactivated and temporarily inoperative.
Possibl ecauses are:
RThe windshield in th ecamera' sfield of vision is dirty.
RVisibilit yisimpaire ddue to heav yrain ,sno worf og.
RThere hav ebeen no lan emarking sfor an extended period
RThe lan emarking sare wor naway, dark or covered up, e.g. by dir tor
snow
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Lan eKeepin gAssistiso perational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XClean th ewindshield.
Lan eKeepin gAssistInoperativeLaneKeepin gAssistisf aulty.
XVisit aqualified specialist workshop .
Blind SpotAssistCurrently Unavaila‐ble See Operator' sManual
Blind Spot Assististemporarily inoperative.
Possibl ecauses are:
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation .
RThe radar sensor system is outside th eoperating temperature
range.
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Blind Spot Assis tisoperational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XRestart th eengine.
Blind Spo tAssistInoperativeBlind Spot Assis tisfaulty.
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
XVisit aqualified specialist workshop .
ParkingPilot Can ‐celedThe driver's door is open and th edriver's seat belt has no tbeen fas -
tened.
XRepeat th eparking process wit hthe seat belt fastene dand th e
driver's door closed .
208Display messages
On-boardcomputer andd isplays

Display messagesPossible causes/consequences andMSolutions
You haveinadvertentl ytou ched th emultifunction steering whee lwhile
steering intervention was active .
XWhilesteering intervention is active ,makes uret hatthe multifunc-
tion steering whee lisnottouched unintentionally.
The vehicl ehas started to skid and ES P®has intervened.
XUse Parking Pilotagain later (Ypage 164).
ParkingPilot Inop‐erativ eYou hav ejustc arrie doutalarg enumber of turnin gorparking maneu-
vers.
Parking Pilo twill become available again after approximately te n
minute s(
Ypage 164).
XPull ove rand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSwitc hoff and restar tthe engine.
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
Parking AssistPAR KTRONI Cismalfunctioning .
XVisitaqualified specialist workshop .
ParkingPilot Fin ‐ishedThe vehicl eisparked. Awarning tone also sounds.
The display message disappear sautomatically.
Distance Pilot OffDistanc ePilotD ISTR ONICisd eactivated (Ypage 155).
If it was no tdeactivated by th edriver ,aw arning tone also sounds.
Distance Pilot NowAvailableDistanc ePilotD ISTR ONICiso perational again after having been tem-
porarily unavailable .You can no wreactivat eDistance Pilot
DISTRONI C(
Ypage 152).
Distance Pilot Cur ‐rently UnavailableSee Operator'sMan‐ual
Distanc ePilotD ISTR ONICist emporarily inoperative.
Possibl ecauses are:
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation .
RThe system is outside th eoperating temperature range.
RThe on-boar dvoltag eistoolow.
Aw arning tone also sounds.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Distanc ePilotD ISTR ONICiso perational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 141).
XRestart th eengine.
Display messages20 9
On-boardc omputer andd isplays
Z