2020 MERCEDES-BENZ GLA SUV ECU

Tire
s Di
spl aymes sages Po
ssible cause s/consequ encesand 0050 0050
So luti ons Che
ckTirePre s‐ Che
ckTirePre s‐
sur eSoo n sur
eSoo n Ca
nad aonl y:
The tirepressu reloss wa rning system hasde tecte dasigni ficant
lo ss inpre ssu re.
A wa rning tone also sou nds .
Po ssi ble cau ses:
R youha ve cha nge dthe positio ns ofthe wheelsand tiresor ins tal-
le d new wheelsand tires
R the tire pressu reinone ormor etire sha sdro pped
G WA
RNING
Ti re pre ssu res thatar etoo low po se the followi ng hazar ds:
R the yma ybu rst, especially as the load and vehiclesp ee dincr ease.
R the yma ywe arexce ssivel yand /or unevenl y,wh ich maygre atly
imp airtire tractio n.
R the drivin gcha racteri stics, aswellas stee ringand braking ,ma y
be gre atlyimp aired .
The reisaris kof an acc ident.
X Stop thevehiclewi thou tma king anysudd en stee ringor bra king
ma neu vers.Pa yatte ntionto the trafficcond itions asyoudo so.
X Secu rethe vehicleag ainst rolling away (Y page 145 ).
X Ch eck thetiresand ,if nece ssary,fol low the instructio nsfor afla t
tire (Ypage 288) .
X Ch eck thetire pressu res and,if nece ssary,corr ectthe tire pres-
su re.
X Re sta rtthe tire pressu reloss wa rning system when the tire pres-
su re iscorr ect(Ypage 312 ). Che
ckTirePre s‐ Che
ckTirePre s‐
sur eThe nRes tar t sur
eThe nRes tar t
Run FlatInd ica tor Run
FlatInd ica tor Ca
nad aonl y:
The tirepressu reloss wa rning system genera tedadi sp laymes sage
and hasnot been res tarted since.
X Set thecorr ecttire pressu reinallfou rtire s.
X Re sta rtthe tire pressu reloss wa rning system (Ypage 312 ). Run
FlatInd ica tor Run
FlatInd ica tor
Ino perative Ino
perative Ca
nad aonl y:
The tirepressu reloss wa rning system isfaulty.
X Visita qu alifi ed speci alistwo rksh op. Ple
ase Correct Ple
ase Correct
Tir ePre ssure Tir
ePre ssure USA
only:
The tirepressu reistoo low in at leas tone ofthe tires,or the tire
pre ssu rediffe renc ebe twe enthe wheelsistoo great.
X Ch eck thetire pressu res atthe next opportu nity (Ypage 312 ).
X Ifnece ssary,corr ectthe tire pressu re.
X Re sta rtthe tire pressu remoni tor(Ypage 315 ). 22
4 Disp
laymes sage sOn -boar dcomp uter anddi sp lay s

Smar
tKey Display
messages Possible
causes/co nsequences and0050 0050
Solutions 00AF
Key Does Not Key
Does Not
Belong toVehicle Belong
toVehicle You
have putthewrong SmartK eyinthe ignition lock.
X Use thecorrect SmartKey. 00AF
Take YourKeyfrom Take
YourKeyfrom
Ignition Ignition The
SmartK eyisin the ignition lock.
A warning tonesounds
X Remove theSmartK ey. 00AF
Obtain aNew Key Obtain
aNew Key The
SmartK eyneeds tobe replaced.
X Visit aquali fiedspecialist workshop. 00AF
Replace KeyBattery Replace
KeyBattery The
SmartK eybattery isdischarged.
X Change thebattery (Ypage 72). 00AF
Don't Forget Your Don't
Forget Your
Key Key The
display message isshown foramaximum of60 seconds andis
only areminder.
You have opened thedriver's doorwiththeengine switched off.The
SmartK eyisnot inthe ignition lock.Awarning tonesounds.
X Take theSmartK eywith youwhen youleave thevehicle. 00AF
Key NotDetected Key
NotDetected
(red display message) The
SmartK eyisnot inthe vehicle.
A warning tonealsosounds.
If the engine isswitched off,you can nolonger lockthevehicle cen-
trally orstart theengine.
X Pull over andstop thevehicle safelyassoon aspossible, paying
atten tiontoroad andtraffic condition s.
X Secure thevehicle against rollingaway(Ypage 145).
X Locate theSmartK ey. Because
thereisinterf erence fromastron gsource ofradio waves,
the SmartK eyisnot detect edwhilst theengine isrunning.
A warning tonealsosounds.
X Pull over andstop thevehicle safelyassoon aspossible, paying
atten tiontoroad andtraffic condition s.
X Secure thevehicle against rollingaway(Ypage 145).
X Insert theSmartK eyinto theignition lockanddrive inSmartK ey
mode. 230
Display
messagesOn-board computerand displays

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00E9
0051
The redseat beltwar ning lamp lights upafter theengine starts,assoon as
the drive r'sorthe front-passenge rdoor isclosed .
The drive ror front passenger hasnotfastened theirseatbelt.
X Fasten yourseat belt(Y pag e43).
The warning lamp goesout.
There areobjects onthe front-passenge rseat.
X Remo vethe objects fromthefront-passenge rseat andstow them inasecure
pla ce.
The warning lamp goesout. 00E9
0051
The redseat beltwar ning lamp flashes and anintermittent audib lewarni ng
sound s.
The drive ror front passenger hasnotfastened theirseatbelt.The vehicl eis
bei ng drive nfaster than15mph (25km/h )or has brieflybeen drivenfaster
than 15mph (25km/h) .
X Fasten yourseat belt(Y pag e43).
The warning lamp goesoutand theintermittent warningtone cease s.
There areobjects onthe front-passenge rseat. Thevehicl eis bei ng drive nfaster
than 15mph (25km/h )or has brieflybeen drivenfaster than15mph
(25 km/h) .
X Remo vethe objects fromthefront-passenge rseat andstow them inasecure
pla ce.
The warning lamp goesoutand theintermittent warningtone cease s. 232
Warning
andindic atorlamps inthe instrum entclusterOn-bo ardcomput erand displays

Safety
systems Warning/
indicator
lamp 00510051
Signal type
Possible causes/co nsequences and0050 0050
Solutions 00C6
0051
The yellow brakesystem warning lamplights upwhile theengine isrunning.
The brake system ismalfunction ing.
G WARNING
The braking characterist icsmay beaffected.
There isarisk ofan accident.
X Drive ontaking extracare.
X Visit aquali fiedspecialist workshop immediately. 0027004D
0051
0027 (USAonly), 004D(Canada only):thered brake system warning lampis
lit while theengine isrunning. Awarning tonealsosounds.
G WARNING
The brake boosting effectismalfunction ingand thebraking characterist icsmay
be affected.
There isarisk ofan accident.
X Pull over andstop thevehicle safelyassoon aspossible, payingatten tionto
road andtraffic condition s.Do not cont inue driving underanycircumst ances.
X Secure thevehicle against rollingaway(Ypage 145).
X Consult aquali fiedspecialist workshop.
X Observe theadditional displaymessages inthe multifunct iondisplay . 0027004D
0051
0027 (USAonly), 004D(Canada only):thered brake system warning lampis
lit while theengine isrunning. Awarning tonealsosounds.
There isnot enough brakefluidinthe brake fluidreservoir.
G WARNING
The braking effectmaybeimpaired.
There isarisk ofan accident.
X Pull over andstop thevehicle safelyassoon aspossible, payingatten tionto
road andtraffic condition s.Do not cont inue driving underanycircumst ances.
X Secure thevehicle against rollingaway(Ypage 145).
X Do not add brake fluid.Adding morewillnotcorrect themalfunction .
X Consult aquali fiedspecialist workshop.
X Observe theadditional displaymessages inthe multifunct iondisplay . War
ning andindicator lampsin the instrum entcluster
233On-board computerand displays Z

Engine
Wa
rning/
ind icat or
lam p 00510051
Signa lty pe
Possi blecauses/cons equences and0050 0050
Solu tions 00B9
0051
The yellow CheckEn gin ewarn inglamp lightsup while theeng ineisrun ning.
Ther emay beamalf unction,for exam ple:
R in theeng ineman agem ent
R in thefuel inject ion syst em
R in theexh aust system
R in theign ition syst em
R in thefuel system
The emis sion limit values maybeexc eeded andtheeng inemay beinemer -
gen cymod e.
X Visi ta qualifi edspec ialist workshop immediat ely.
i In
som est ate s,you must immediat elyvisita qualifi edspec ialist workshop
as soon astheyellow CheckEn gin ewarn inglamp lightsup. This isdue tothe
legal requirementsin eff ect inthese state s.Ifin doubt ,ch eck whet hersuch
legal regulati onsapply inthest ate inwhic hyou arecurren tlydriv ing. 00D4
0051
The yellow reservefuel warn inglamp lightsup while theeng ineisrun ning.
The fuel levelhas dropped intoth eres erveran ge.
X Refuel atthenear estgas statio n. 00D4
0051
The yellow reservefuel warn inglamp flashes while theveh icle isin mot ion.
In addit ion,th e00B9 CheckEn gin ewarn inglamp maylight up.
The fuel fillercap isno tclo sed correctlyorthefuel systemisleak ing.
X Chec kth at thefuel fillercap iscor rectlyclosed.
X Ifth efu el filler capisnot corr ectly closed :clo sethefuel fillercap.
X Ifth efu el filler capisclosed :visi ta qualifi edspec ialist workshop. 00AC
0051
The redcoolant warn inglamp lightsup while theeng ineisrun ningand the
coo lant temper aturegage isat thest art ofthesc ale.
The temper aturesen sor forthecoo lant temper aturegauge ismalf unctionin g.
The coolant temper atureis no longer bein gmon itored. Thereis arisk ofeng ine
damag eif th ecoo lant temper atureis toohigh .
X Pull overand stop theveh icle safe lyand switchoff theeng ine,payin gatt en-
tio nto road andtraff iccon dition s.Do notcon tinue driv ingunde rany circum -
st anc es.
X Sec ure theveh icle again stroll ing away (Ypage 145).
X Con sult aqualifi edspec ialist workshop. Wa
rning and indicat orlam psintheinst rumen tclust er
239On-boar dcomp uter and displa ys Z

Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning.
The coola ntleve lis too low.
If the coola ntleve lis correct, theairflowtothe engine radiator may beblocked
or the electric engineradiator fanmay bedefective .
The coola ntistoo hotand theengine isno longer being coole dsuffi ciently .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Pul lover andstop thevehicl esafel yand switch offthe engine, paying atten-
tion toroad andtraffic conditions.
X Secure thevehicl eaga inst rolling awa y(Y pag e145).
X Leave thevehicl eand keep asafe dista ncefrom thevehicl euntil theengine
has coole ddow n.
X Che ckthe coola ntleve land add coola nt,obser vingthewarni ngnotes
(Y pag e277) .
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsystem
checked.
X Make surethattheairsup plytothe engine radiator isnot blocked ,e.g. by
snow, slush orice.
X Do not start theengine againuntil thecoola nttempera tureisbel ow 248 ‡
(120 †).Otherwi se,the engine couldbe dama ged.
X Drive tothe neares tqua lified speci alist worksho p.
X Avoid heavyloa dson the engine asyou doso, e.g. drivinginmountai nouster-
rain andstop-and-go traffic. 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning. Awarn-
ing tone alsosound s.
The coola nttempera turehasexceede d248 ‡(120 †).The airflowtothe
engine radiator may beblocked orthe coola ntleve lmay betoo low.
G WARNING
The engine isnot being coole dsuffi ciently andmay bedama ged.
Do not drive when yourengine isoverhe ated.Thiscancaus esome fluidswhi ch
may have leaked into theengine compartment tocatch fire.
Steam fromtheoverhe atedengine canalsocaus eserio usburns whichcan
occur justbyopeni ngthe hood.
There isarisk ofinjury .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Pul lover andstop thevehicl esafel yand switch offthe engine, paying atten-
tion toroad andtraffic conditions.
X Secure thevehicl eaga inst rolling awa y(Y pag e145) .
X Leave thevehicl eand keep asafe dista ncefrom thevehicl euntil theengine
has coole ddow n.
X Che ckthe coola ntleve land add coola nt,obser vingthewarni ngnotes
(Y pag e277).
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsystem
checked. 240
Warning
andindic atorlamps inthe instrum entclusterOn-bo ardcomput erand displays

Tire
s Warn
ing/
in dic ato r
lamp 00510051
Sign altype
Po ssible cause s/consequ encesand 0050 0050
So luti ons 0077
0051
The yellow tire pressu remoni torwarning lamp (pres sure loss/m alfu nctio n)is
li t.
The tirepressu remoni torhasde tecte daloss ofpre ssu reinat leas tone ofthe
tire s.
G WA
RNING
Ti re pre ssu res thatar etoo low po se the followi ng hazar ds:
R the yma ybu rst, especially as the load and vehiclesp ee dincr ease.
R the yma ywe arexce ssivel yand /or unevenl y,wh ich maygre atlyimp airtire
tra ctio n.
R the drivin gcha racteri stics, aswellas stee ringand braking ,ma ybe gre atly
imp aired .
The reisaris kof an acc ident.
X Stop thevehiclewi thou tma king anysudd en stee ringor bra king maneu vers.
Pa yatte ntionto the trafficcond itions asyoudo so.
X Secu rethe vehicleag ainst rolling away (Y page 145) .
X Ob ser vethe additio nal disp laymes sage sin the multifu nctio ndisp lay.
X Ch eck thetiresand ,if nece ssary,fol low the instructio nsfor afla ttire
(Y page 288 ).
X Ch eck thetire pressu re(Y page 312 ).
X Ifnece ssary,corr ectthe tire pressu re. 0077
0051
The yellow tire pressu remoni torwarning lamp (pres sure loss/m alfu nctio n)
fla she sfor appro xim atelyone minute and thenrem ains lit.
The tirepressu remoni torisfaulty.
G WA
RNING
The system ispo ssi blyuna ble to reco gnizeorreg ister low tire pressu re.
The reisaris kof an acc ident.
X Ob ser vethe additio nal disp laymes sage sin the multifu nctio ndisp lay.
X Visita qu alifi ed speci alistwo rksh opimm ediatel y. 24
2 Warni
ngand indic ator lamps inthe instrume ntcluste rOn-bo ard computer anddisplay s

Gene
ralnotes
The multime diasystem section inthis Opera -
tor's Manua ldescrib esthe basi cprincipl esfor
opera tion.More information canbefound in
the Digital Operator'sManua l. Important
safetynotes G
WARNING
If you opera teinformation systemsandcom-
municatio nequ ipment integrated inthe
vehicle whendriving, youmay bedistracted
from thetraffic situation. Youcould also
lose control ofthe vehicle .There isarisk of
an accide nt.
Only opera tethis equipment whenthetraffic
situa tionpermits. Ifyou arenot sure that
this ispossi ble,park thevehicle paying
attention totraffic conditions andopera te
the equipment whenthevehicle isstation-
ary .
You must observe thelega lrequ irements for
the country inwhich youarecurrently driving
when operatingthemultime diasystem.
The multime diasystem calculates theroute to
the destinati onwithou ttaking thefollo wing
into account, forexampl e:
R traffic lights
R stop andyieldsigns
R parking orstopping restrictions
R road narrowi ng
R other roadandtraffic rulesand regul ations
The multime diasystem maygiveincorrect nav-
iga tion recommendati onsifthe actual street/
traffic situationdoes notcorrespond withthe
digi talmap's data.
For exampl e:
R adiverted route
R the road layout orthe direction ofaone-way
street hasbeen changed
For this reaso n,you must alwaysobserve road
and traffic rulesand regul ations duringyou r
journey. Roadand traffic rulesand regul ations
alw ayshave priorityover multime diasystem
driving recommendati ons. Navig
ation announcements areintended to
direct youwhiledriving withoutdiverting your
attention fromtheroad anddriving.
Plea sealw aysuse this feature instead ofcon-
sul ting themap displayfordirections. Looking
at the icons ormap displaycan distract you
from traffic conditions anddriving, and
increase therisk ofan accide nt.
This equipment complieswith FCCradiation
exposu relimi tsset forth foruncontrolled
equ ipment andmeets theFCC radiofreque ncy
(RF) Exposure Guideli nes inSuppl ement Cto
OET65.
This equipment hasvery lowlevel sof RF
energy thatisdeeme dto comply withoutmaxi-
mum permis siveexposu reeval uation(MPE).
However, itis recommended toinstall itat a
distance ofat lea st8inches (approx. 20cm)
betwee nthe radiation source andaperson's
body (notinclud inglimb ssuch ashands,
wrists, feetandlegs) . G
WARNING
Modi fications toelectronic components,
their software aswel las wiri ngcan impa ir
their function and/orthefunction ofother
networked components. Inparticu lar,sys-
tems releva ntto safety couldalsobeaffec-
ted. Asaresul t,these maynolonger func-
tion asintended and/orjeopardizethe oper-
ating safety ofthe vehicle .There isan
increase drisk ofan accide ntand injury.
Never tamper withthewiringaswel las elec-
tronic components ortheir software .You
shoul dhave allwork toelectrica land elec-
tronic equipment carried outataqua lified
specia listworkshop . Func
tionrestrictio ns
For safety reasons,some functions arerestric-
ted orunava ilable whil ethe vehicle isin
motion. Youwillnotice this,forexampl e,
becau seeither youwillnot beableto sele ct
certain menuitemsoramessag ewil lapp ear
to this effect. Func
tionrestrictio ns
243Multimedia system Z