2020 MERCEDES-BENZ GLA ABS

object
swhen theyareinthe immediate
vicinit yof the vehicle. Youcould damage the
vehicle orthe object s.
The sensors maynotdetect snowandother
object sthat absorb ultrasonic waves.
Ultrasonic sourcessuchasan automatic car
wash, thecompressed- airbrakes ofatruck
or apneumatic drillcould cause Parking
Assist PARKTRONIC tomalfunct ion.
Parking AssistPARKTRONIC maynotfunc-
tion correc tlyon uneven terrain.
Parking AssistPARKTRONIC isactivated auto-
matically whenyou:
R switch onthe ignition
R shift thetransm issiontoposition 005B,005Eor
005C
Parking AssistPARKTRONIC isdeactivated at
speeds above11mph (18km/ h).It is rea cti-
vate dat lowe rspe eds.
Rang eof the senso rs Gen
eral notes
Pa rking AssistPAR KTRONIC doesnot take into
acco untobstacl eslocate d:
R bel ow the dete ction range,such asper sons ,
ani mal sor obje cts
R ab ove thedete ction range,e.g. overhanging
lo ad s,tai lsecti onsorload ing ram psof
trucks 0043
Senso rsinthe front bumpe r,left-ha ndside
(e xamp le)
The sens orsmus tbe free from dirt, ice or
slu sh. The ycan othe rwisenot functi oncor-
rectl y.Clea nthe sens orsregularl y,taki ngcare
not toscra tchordamag ethem (Ypage 283 ). Rang
e 0043
Detecti onrang eof front sensors
0044 Detecti onrang eof rea rsens ors
Front sensors Ce
nter Appr
ox.40in(app rox.
100 cm) Co
rners Appr
ox.24in(app rox.
60 cm) Re
ar sens ors Ce
nter Appr
ox.48in(app rox.
120 cm) Co
rners Appr
ox.32in(app rox.
80 cm) Mini
mum distance Ce
nter Appr
ox.8in (app rox.
20 cm) Co
rners Appr
ox.6in (app rox.
15 cm) If
an obs tacl eis dete cted within thisrang e,the
rel eva ntwa rning displ ayslight upand awa rn-
ing tone sounds. Ifthe distance fallsbel ow the
mini mum ,the distance maynolonger be
sho wn. 17
2 Dri
ving sys temsDriving and parkin g

In
such cases, LaneKeepi ngAssist can:
R give anunnecessary warning
R not give awarning
There isarisk ofan accident.
Alway spay particul arattention tothe traffic
situa tionandkeep within thelane, espe-
ciall yif Lane Keepi ngAssist alerts you . G
WARNING
The Lane Keepi ngAssist warning doesnot
return thevehicle tothe origina llane. There
is arisk ofan accident.
You shoul dalw ays steer, brakeoraccelera te
you rself, inparticul arifwarned byLane
Keepi ngAssist.
If you failtoada ptyou rdriving style,Lane
Keepi ngAssist canneither reducetherisk of
an accident noroverride thelawsof phys ics.
Lane Keepi ngAssist cannot takeintoaccount
the road, traffic andweather conditions. Lane
Keepi ngAssist ismerely anaid.You are
responsib lefor the distance tothe vehicle in
front, forvehicle speed,for braking ingood
time andforstayi nginyou rlane.
The Lane Keepi ngAssist doesnotkeep the
vehicle inthe lane.
The system maybeimpa iredormay notfunc-
tion if:
R there ispoor visibility,e.g. due toinsuffi-
cient illuminatio nof the road, ordue to
snow, rain,fogorspray
R there isglare ,e.g. from oncoming traffic,
the sun orreflection fromother vehicle s
(e.g. ifthe road surface iswet)
R the windshi eldisdirty, fogged up,dama ged
or covered, forinstance byasticker, inthe
vicinity ofthe camera
R there arenoorseveral unclearlane mark-
ings forone lane, e.g.roadw orks
R the lane markings areworn away,dark or
covered up,e.g. bydirt orsnow
R the distance tothe vehicle infront istoo
short andthus thelane markings cannotbe
detected
R the lane markings changequickly, e.g.lanes
branch off,cross oneanother ormerge R
the road isnarrow andwindi ng
R there arehighl yvaria bleshade conditions
on the roadw ay
Swi tching onLane Keeping Assist
X Switch onActive LaneKeepi ngAssist using
the on-board computer; todo so, select
Standard Standard
orAdaptive Adaptive
(Ypage 186).
If you drive atspeed sabove 40mph
(60 km/h) andlane markings aredetected,
the lines inthe assis tance graphi care
shown ingreen (Ypage 197). LaneKeepi ng
Assist isready foruse.
If Standard Standard
isselected, nowarning vibration
occurs if:
R you have switched onthe turn signal .In this
event, thewarnings aresupp ressed fora
certain periodoftime.
R adriving safetysystem intervenes, e.g.ABS,
BAS orESP ®
.
When Adaptive Adaptive
isselected, nowarning vibra-
tion occurs if:
R you have switched onthe turn signal .In this
event, thewarnings aresupp ressed fora
certain periodoftime.
R adriving safetysystem intervenes, e.g.ABS,
BAS orESP ®
.
R you accelera tehard, e.g.kickdown.
R you brake hard.
R you steer actively ,e.g. swerve toavoid an
obstacle orchange lanesquickly.
R you cutthe corner onasharp bend.
In order thatyouarewarned onlywhen neces-
sary andingood timeifyou cross thelane
marking, thesystem detects certaincondi-
tions andwarns youaccordingly .
The warning vibrationoccurs earlierif:
R you appro achtheouter lanemarking ona
bend
R the road hasvery widelanes, e.g.afreewa y
R the system detects solidlanemarkings
The warning vibrationoccurs laterif:
R the road hasnarrow lanes.
R you cutthe corner onabend Drivi
ngsystems
187Drivingand parking Z

Safety
systems Display
messages Possible
causes/co nsequences and0050 0050
Solutions 002500E5
Currently Unavaila‐ Currently
Unavaila‐
ble SeeOperator's ble
SeeOperator's
Manual Manual ABS
(Anti- lockBraking System), BAS(Brake Assist), ESP®
(Elec-
tronic Stability Program), theHOLD function andhillstart assist are
temporarily unavailable.
Act ive Brake Assist mayhave alsofailed .
In addition, the0025, 00E5and00BB warning lampsmaylight upin
the instrument cluster.
ATTENTION ASSISTisdeactivated.
Possible causesare:
R Self-diagnosis isnot yetcomplete
R The on-board voltagemaybeinsufficient
G WARNING
The brake system continues tofunction normally, butwithout the
functions listedabove. Thewheels couldtherefore lockifyou brake
hard, forexample.
The steerabili tyand braking characteristics maybeseverely affec-
ted. Thebraking distance inan emergency brakingsituation can
increase.
If ESP ®
is not operational, ESP®
is unable tostabilize thevehicle.
There isan increased riskofskidding andanaccident.
X Carefu llydrive onasuitabl estretc hof road, making gentlesteer-
ing movements atspeeds ofabove 12mph (20km/h).
If the displa ymessage disappears,thefunctions mentioned
above areavail able again.
If the multifunction displaystill shows thedispla ymessage:
X Drive oncarefully .
X Visit aqual ified speciali stworkshop immediately . 002500E5
Inoperative See Inoperative
See
Operator's Manual Operator's
Manual ABS,
BAS,ESP®
,the HOLD function andhillstart assist arenot
avail able duetoamalfunction.
Act ive Brake Assist mayhave alsofailed .
The 0025, 00E5,00BBand0027 (USAonly)or004D (Canad aonly)
warning lampsinthe instrument clustermayalsolight up.
ATTENTION ASSISTisdeactivated.
G WARNING
The brake system continues tofunction normally, butwithout the
functions listedabove. Thewheels couldtherefore lockifyou brake
hard, forexample.
The steerabili tyand braking characteristics maybeseverely affec-
ted. Thebraking distance inan emergency brakingsituation can
increase.
If ESP ®
is not operational, ESP®
is unable tostabilize thevehicle.
There isan increased riskofskidding andanaccident. Dis
play messages
205On-boardcomp uter anddisplays Z

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 0025
0051
The yellow ABS warning lamp islit whi lethe engine isrunning.
ABS (Anti-lock BrakingSystem) isdea ctivated duetoamalfu nction. Therefore,
BAS (Brake Assist), ActiveBrakeAssist, ESP®
(Electronic StabilityProgra m),the
HOLD function andhillstart assist,for exampl e,are alsodea ctivated.
ATTENTION ASSISTisdea ctivated.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.The whee lscoul dtherefore lockifyou brake hard,for exampl e.
The steerab ility and braki ngchara cteristics maybesevere lyaffected. Thebrak-
ing dista nceinan emerge ncybraki ngsitua tioncanincreas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately.
If the ABS control unitisdefective ,there isals oapossi bility that other systems ,
such asthe naviga tionsystem orthe automatic transmissi on,willnot beava ila-
ble . 234
Warning
andindic atorlamps inthe instrum entclusterOn-bo ardcomput erand displays

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 0025
0051
The yellow ABS warning lamp islit whi lethe engine isrunning.
ABS istempora rilyunava ilable .There fore,BAS, Active BrakeAssist, ESP®
,EBD
(el ectronic brakeforcedistributio n),the HOLD function andhillstart assist,for
exampl e,are alsodea ctivated.
Possi blecaus esare:
R Self-di agnosi sis not yetcomple te
R The on-board voltagemay beinsuffi cient
ATTENTION ASSISTisdea ctivated.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.The front andrear whee lscoul dtherefore lockifyou perform afull
brake application, forexampl e.
The steerab ility and braki ngchara cteristics maybesevere lyaffected. Thebrak-
ing dista nceinan emerge ncybraki ngsitua tioncanincreas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isarisk ofan accide nt.
X Ca reful lydrive asui table distance,making slightsteering movements ata
spee dabo ve12 mph (20km/h) .
The functions mentioned aboveare available againwhen thewarni nglamp
goes out.
If the warning lamp isstill on:
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately. 0025
0051
The yellow ABS warning lamp islit whi lethe engine isrunning. Awarni ng
tone alsosound s.
EBD ismalfu nctioning. Therefore,ABS, BAS, Active BrakeAssist, ESP®
,the
HOLD function andhillstart assist,for exampl e,are not available either.
ATTENTION ASSISTisdea ctivated.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.The front andrear whee lscoul dtherefore lockifyou perform afull
brake application, forexampl e.
The steerab ility and braki ngchara cteristics maybesevere lyaffected. Thebrak-
ing dista nceinan emerge ncybraki ngsitua tioncanincreas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately. Warning
andindic atorlamps inthe instrum entcluster
235On-boardcomput erand displays Z

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 0025
00E500BB
0027004D 0051
0027(USA only),004D (Canada only):the red brake warninglamp andtheyel-
low ABS, ESP®
and ESP®
OFF warning lamp sare litwhi lethe engine isrunning.
ABS andESP®
are malfu nctioning. Therefore,BAS, Active BrakeAssist, EBD,the
HOLD function andhillstart assist,for exampl e,are not available either.
ATTENTION ASSISTisdea ctivated.
G WARNING
The brake system continues tofunction normally,but witho utthe functions lis-
ted above.The front andrear whee lscoul dtherefore lockifyou perform afull
brake application, forexampl e.
The steerab ility and braki ngchara cteristics maybesevere lyaffected. Thebrak-
ing dista nceinan emerge ncybraki ngsitua tioncanincreas e.
If ESP ®
is not opera tional,ESP ®
is unab leto stabi lizethevehicl e.
There isan increas edrisk ofskiddi ngand anaccide nt.
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Drive oncarefu lly.
X Visi ta qua lified speci alist worksho pimmed iately. 00E5
0051
The yellow ESP®
war ning lamp flashes whilethe vehicl eis in motion.
ESP ®
or traction controlhasintervened becausethere isarisk ofskiddi ngorat
lea stone whee lhas started tospin.
Cru isecontrol orActive Distance AssistDISTRONIC isdea ctivated.
X When pulling away,only depre ssthe accele ratorpedalas far asnecessa ry.
X Ease offthe accele ratorpedalwhi lethe vehicl eis in motion.
X Adapt yourdrivi ngstyle tosui tthe road andweather conditions.
X Do not deactivate ESP®
.
In rare cases (Ypag e65) ,it may bebest todea ctivate ESP®
.
Observe theimpor tantsafety notesonESP ®
(Y pag e64). 236
Warning
andindic atorlamps inthe instrum entclusterOn-bo ardcomput erand displays

These
notesalso apply tolight alloy wheels
with aclear mattefinish.
Use only insect remover andcarshampoo
from therange ofcare products approved by
Mercedes- Benz.
Cleaning thedecorative film !
The
following mayhave aneffect onthe
service lifeand color ofdecorative film:
R sunlight
R temperat ure,e.g.hot-airfan
R weather conditions
R ston eimpacts anddirt
R chemical cleaningagents
R greasy substances
! Do
not use anytypes ofpolish onmatt
decorative film.Polishing surfacescovered
with filmgives itashiny finish.
! Do
not treat mattorstruct ureddecorative
film with wax. Thismay lead tomarks that
cann otbe removed.
Observe thenotesinthe section onthe care
and treatm entofmatte paintwork
(Y page 281), these notesalso apply tomatte
decorative film.
To clean, useplenty ofwater andamild clean-
ing agent without additional orabrasive prod-
ucts, e.g.useacar shampoo approved for
Mercedes- Benz.
X Dry vehicles coveredwithfilmusing asoft,
absorbent clothafterevery wash.
Water marks couldotherwise form.
Scr atches, corrosiv edeposits, areasaffected
by corrosion anddamage causedbyinade-
quate carecannotalway sbe completely
repaired. Insuch cases, visitaqualified spe-
cialist workshop.
X Remove dirtimmediately, wherepossible,
while avoiding rubbingtoohard.
The decorative filmmay beirreparably dam-
aged.
X Soak insect remains withinsect remover
and rinse offthe treated areasafterwards.
X Soak birddroppings withwater andrinse off
the treated areasafterwards.
The Paint Cleaner cleaning product, whichhas
been approved andrecomm endedby
Mercedes- Benz,should beused when dirthas penetr
atedthedecorative filmsurface orthe
decorative filmhasbecome dull.
The manufact urercanprovide youwith infor-
mation onspecial careandcleaning products.
Laminated surfacesmayexhibit optical differ-
ences tosurfaces whichwerenotprotec tedby
a decorative filmwhen thedecorative filmis
removed.
i Have
workorrepairs ondecorative film
carried outataqualified specialist work-
shop. Mercedes- Benzrecomm endsthatyou
use anauthorized Mercedes-BenzCenter for
this purpose. Cleaning
thevehicle parts
Cleaning thewheels G
WARNIN
G
The water jetfrom acircular jetnozz le(dirt
blasters) cancause invisible exteriordam-
age tothe tires orchassis compon ents.
Component sdamaged inthis way may fail
unexpect edly.There isarisk ofan accident .
Do not use power washers withcircular jet
noz zles toclean thevehicle. Havedamaged
tires orchassis compon entsreplaced imme-
diately.
! Do
not use acidic wheel cleaning products
to remove brakedust.Thiscould damage
wheel boltsandbrake compon ents.
! Do
not park yourvehicle foralong period
of time directly aftercleaning, particularly
after cleaning thewheel rimwith wheel
cleaner. Wheelcleaner canlead tothe
increased corrosionofthe brake discsand
pads. Therefore, driveforafew minutes
after cleaning. Byheating upthe brakes, the
brake discsandpads dry.Thevehicle can
then beparked foralong period oftime.
Cleaning thewindows G
WARNIN
G
You could become trappedbythe wind-
shield wipers ifthey start moving while
cleaning thewindshield orwiper blades.
There isarisk ofinjury. 282
CareMaintenance
andcare

X
To reduc ethe tire pres sure :de pre sspre s-
su re release button 0043next topre ssu re
ga ug e0044.
X Whe nthe tire pressu reiscorr ect, unscrew
the fillerhos efrom thevalve ofthe sealed
tire .
Note thattire sealant ma yesca pewhen you
uns crew thefillerhos e.
X Screw thevalve cap onto thetire valve of
the sealed tire .
X Pu llthe tire sealant bottle outof the tire
infl ation comp ressor .
The fillerhos erem ains atta chedto the tire
sea lant bottle .
X Driv eto the nearestqu alifi ed spe cialist
wo rksh opand have the tire changed there.
X Hav ethe tire sealant bottle replaced as
soo nas possi ble at aqu alifi ed spe cialist
wo rksh op.
X Hav ethe tire sealant bottle replaced every
fou rye ars ataqu alifi ed spe cialist wo rksh op. Battery
(vehi cle) Impo
rtant safetynotes
Spe cialtool sand expertknow ledge are
req uired when working onthe battery ,e.g .
rem ovaland installatio n.Yo usho uld ther efore
ha ve allwo rkinvo lving the battery carriedou t
at aqu alifi ed spe cialist wo rksh op. G
WAR
NING
Wor kcar riedou tinco rrectly onthe battery
can lead ,for exa mpl e,to asho rtcirc uitand
thu sda ma gethe vehicleelectro nics.Thi s
can lead tofunc tionres tricti onsapplying to
sa fety -releva ntsystem s,e.g .the lighti ng sy
stem ,the ABS (anti-l ock braking system )
or the ESP ®
(El ectro nicStab ility Pro gram).
The opera ting safety ofyour veh iclemay be
res tricte d.
Yo ucou ldlose contro lof the vehicle, for
exa mpl e:
R wh en bra king
R in the eventofabrupt stee ring maneu vers
and /or when the vehicle's spe edisnot
ad apted tothe roadcond itions
The reisaris kof an acci dent.
In the eventofasho rtcirc uitor asimil ar
inci dent, conta ctaqu alifi ed spe cialist wo rk-
sho pimm ediatel y.Do not drive any further .
Yo usho uld ha ve allwo rkinvo lving the bat-
tery carriedou tat aqu alifi ed spe cialist
wo rksh op.
For further informa tionab ou tABS andESP®
,
see (Ypage 60)and (Ypage 63). G
WAR
NING
Ele ctros taticbu ild-u pcan lead tothe crea -
tio nof spa rks, which cou ldignite thehighl y
exp losive gases ofaba ttery .The reisaris k
of an exp losion.
Befo rehandl ing the battery ,tou chthe vehi-
cle body torem ove anyexisting electro static
bu ild-u p.
The highl yfla mma ble ga smixtu reform swh en
cha rging the battery aswellas when jump -
sta rting .
Alw aysma kesure tha tnei ther younor thebat-
tery iselectro statica lly cha rged.Abu ild-u pof
el ectro static cha rge can becau sed,for exa m-
pl e:
R by wearing clothing ma de from syntheti c
fib ers
R du eto frictio nbe twe enclothing and seats
R ifyo upu sh orpullthe battery across the
car petor othe rsy ntheti cma teri als
R ifyo uru bthe battery with aclo th G
WAR
NING
Duri ngthe charging pro cess ,a ba ttery pro-
du ces hydro gen gas.Ifasho rtcirc uitoccu rs Battery
(vehi cle)
293Breakdo wnassis tan ce
Z