sensor MERCEDES-BENZ GLA 2020 Owner's Manual

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions Tir
ePress.Sen ‐ Tir
ePress.Sen ‐
sor (s) Missing sor
(s) Missing US
Aon ly:
The reisno sign alfrom thetire pre ssur esen sor ofoneor sev eral
ti res .The pressur eof theaff ectedtire does notappear inthemult i-
fun ction disp lay.
X Hav eth efault ytire pre ssur esen sor replace dat aqualif iedspe-
cial istwor kshop . Tir
ePre ssureMon i‐ Tir
ePre ssureMon i‐
tor InoperativeNo tor
InoperativeNo
Whe elSensors Whe
elSensors US
Aon ly:
The whee lsmoun teddo nothav easuit able tire pre ssur esen sor.
The tire pre ssur emon itor isdeac tivat ed.
X Moun twhee lswit hsuit able tire pre ssur esen sors.
The tire pre ssur emon itor isact ivat edauto maticallyaft erdrivin g
for afew minutes. Tir
ePre ss. Moni‐ Tir
ePre ss. Moni‐
tor Inoperative tor
Inoperative US
Aon ly:
The tire pre ssur emon itor isfault y.
X Vis itaqualif iedspecialistwor kshop . Veh
icle Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions Dep
ressBra keto Dep
ressBra keto
Sta rtEngine Sta
rtEngine You
haveatt emp tedto start theen gin ewit hth etrans mis sion in
pos ition 005Cwithout depressing thebrak epedal .
X De pre ssthebrak epedal . To
DeselectPor To
DeselectPor
N, DepressBra ke N,
DepressBra ke
and StartEngine and
StartEngine You
attemp tedto shi ftthetrans mis sion topos ition 005Eor005B with-
out start ing theen gin e.
X Start theen gin e.
X De pre ssthebrak epedal .
i It
is pos sibleto shi ftthetrans mis sion from position 005Dtothe
des iredpos ition onlyifyou depr essthebrak epedal .On lythen
can thepark inglockbe deac tivat ed. Ifyou donotdepr essthe
brak epedal ,th eDI RECT SELECT levercan still be mov edbut the
park inglockrem ainsen gage d.
i At
trans mis sion fluid tempe ratures below00F84 ‡(00F82 0†), you can
shi ftout ofpos ition 005Dintoano ther trans mis sion position only
when theen gin eis run ning. App
lyBraketo App
lyBraketo
Shi ftfrom'P' Shi
ftfrom'P' You
attemp tedto shi ftthetrans mis sion topos ition 005E, 005Cor005B
wit hout depressing thebrak epedal .
X De pre ssthebrak epedal . 226
Disp
laymes sage sOn -boar dcomp uter anddi sp lay s

X
Clean sensors0043 ofthedriv ingsyst ems
wit hwate r,car sham pooandasof tclo th.
Clean ingtherea rview camera !
Do
notcle an thecam eralensand thearea
aroun dth erear view camerawithapower
washe r. X
Mak esure that theveh icle isat ast and still
and theSm artKey isin posi tion0048 inthe
ign ition lock.
X Open thecam eracover forcleanin gvia the
mult imed iasyst em(see Digital Oper ator's
Man ual).
X To clean therea rview camera:use clear
wate rand asof tclo thto cle an cam era
len s0043. Clean
ingtheexha ustpipes G
WAR
NING
The exhaust tailpipe andtailpipe trim can
bec ome veryhot .If you come intoco ntact
wit hth ese partsof theveh icle,you could
burn yours elf.Ther eis aris kof burn s.
Alwa ysbe part icular lycar eful andsuper vise
ch ildr enclosely aroun dth eex haust pipeand
th eex haust pipetrims .All ow these compo -
ne ntsto cool down before touch ingthem.
! Do
notcle an theex haust pipewithacid -
based cleanin gagen ts,suc has bat hro om
cle ane ror wheel cleane r.
! Mer
cedes‑AM Gveh icleswit hblac ktail -
pipes :blac kch rom etrims must notbe pol-
ishe dwit hach rom epolis has this will caus e
th em tolose their blac kshin e.For optimal
car e,thefac eplat essho uld berubbe dwit ha
light lyoiled clothaft ereve rycar wash. Com-
mer ciall yavailab leen gin eoils and careoils
are suitable foruse.
For heav iersoili ng,you can apply afin e
pain tworkpolis hwit hamic rofiber cloth.
Remo vetheex ces spolis hres idue afterpol-
ishin g.
Imp urities combin edwithth eeff ect sof road
grit and corrosiv een viron men talfactors may
caus eflas hrust tofor mon thesurf ace. You
can restore theorig inal shineof theex haust
pipe bycleanin git reg ularly, especiallyin win-
te rand afterwashin g.
X Clean theex haust pipewithacar epro duct
te sted and appr ovedby Mer cedes-Ben z. Int
erior car e
Clean ingthedis pla y !
For
cleanin g,do notuse anyofthefoll ow-
ing :
R alco hol-based thinn eror gaso line
R abras ivecleanin gagen ts
R co mm ercially- availab lehous eholdcle an-
ing agen ts
Thes emay damag eth edispl aysurf ace. Do
no tput pressur eon thedispl aysurf ace 284
Car
eMaintenan ceand care

rotation
ofawhee lchanges asaresul tof a
loss ofpressu re,acorrespo ndingwarning
messa gewillapp ear inthe multi function dis-
pla y.
You canrecognize thetire pressu reloss warn-
ing bythe Run Flat Indicato rActive Run
Flat Indicato rActive
Press 'OK'toRestart Press
'OK'toRestart messageinthe mul-
tifunction displayinthe Serv. Serv.
menu. Informa-
tion onthe messa gedisp laycan befound in
the "Restarting thetire pressu reloss warni ng"
section (Ypag e312) .
Important safetynotes The
tirepressu rewarni ngsystem doesnot
warn youofan incorrectly settire pressu re.
Observe thenotes onthe recommended tire
pressu re(Y pag e308) .
The tirepressu reloss warni ngdoes not
repla cethe need toregu larlycheck thetire
pressu re.Aneven lossofpressu reon severa l
tires atthe same timecannot bedetected by
the tire pressu reloss warni ngsystem.
The tirepressu remonitor isnot ableto warn
you ofasudd enloss ofpressu re,e.g. ifthe
tire ispenetrated byaforeig nobject. Inthe
event ofasudd enloss ofpressu re,bring the
vehicl eto ahal tby braking carefully.Avoid
abru ptsteering movements.
The function ofthe tire pressu reloss warni ng
system islimi ted ordela yedif:
R snow chains aremounted onyou rvehicl e's
tires.
R road conditions arewintry.
R you aredrivi ngon sand orgravel .
R you adoptavery sporty drivingstyle (corner-
ing athigh speedsordrivi ngwith high rates
of accele ration).
R you aredrivi ngwith aheavy load(in the
vehicl eor on the roof)
Restarting thetire pressure losswarn-
ing system Resta
rtthe tire pressu reloss warni ngsystem
if you have:
R changed thetire pressu re
R changed thewhee lsor tires
R mounted newwhee lsor tires
X Before restarting, makesurethatthetire
pressu resare setprope rlyon allfour tires
for the respe ctiveopera tingconditions. The
recommended tirepressu recan be
found onthe Tire andLoad ingInformation
pla card onthe B-pill ar.Additio nally,atire
pressu retable isattached tothe fuel filler
flap .The tirepressu reloss warni ngsystem
can only givereliablewarni ngsifyou have
set the correct tirepressu re.Ifan incorrect
tire pressu reisset, these incorrect values
wil lbe monitored.
X Also observe thenotes inthe section ontire
pressu res(Ypag e308) .
X Make surethattheSmartKey isin posi tion
0048 inthe ignitio nlock (Ypag e125).
X Press 0059or0065 onthe steering wheel
to sele ctthe Serv. Serv.
menu.
X Press the0063 or0064 button tosele ct
Tire Pressure Tire
Pressure .
X Press the0076 button.
The Run Flat Indicato rActive Press Run
Flat Indicato rActive Press
'OK' toRestart 'OK'
toRestart messageapp ears inthe
multi function display.
If you wishto con firm therestart:
X Press the0076 button.
The Tire Pressure NowOK? Tire
Pressure NowOK?messa ge
app ears inthe multi function display.
X Press the0063 or0064 button tosele ct
Yes Yes.
X Press the0076 button.
The Run Flat Indicato rRestarte d Run
Flat Indicato rRestarte dmes-
sage appears inthe multi function display.
After ateach-in period,the tire pressu re
loss warni ngsystem willmonitor thesettire
pressu resofall four tires.
If you wishto canc elthe restart:
X Press the0038 button.
or
X Ifthe Tire Pressure NowOK? Tire
Pressure NowOK?messa ge
app ears, press the0063 or0064 button to
sele ctCancel Cancel.
X Press the0076 button.
The tirepressu revalu esstored atthe last
restart willcontinue tobe monitored. Tire
pressure monitor(Can adaonly)
Gene ralnotes If
atire pressu remonitor isinstall ed,the vehi-
cle's whee lshave sensors thatmonitor thetire
pressu resinall four tires. Thetirepressu re 312
Tire
pressureWhee lsand tires

monitor
warnsyouifthe pressu redrops inone
or more ofthe tires. Thetirepressu remonitor
only functions ifthe correspondi ngsensors
are install edinall whee ls.
Information ontire pressu resisdisp layed in
the multifu nctiondisplay.After afew minutes
of drivi ng,the current tirepressu reofeach tire
is shown inthe Serv. Serv.
menuofthe multifu nc-
tion display,see illustratio n(examp le). For
informatio non the messa gedisp lay,refer
to the "Checking thetire pressu reelectroni-
call y"section (Ypage 314).
Important safetynotes G
WARNING
Each tire,includ ingthe spare (ifprovid ed),
shou ldbe checked atlea stonce every two
weeks whencoldandinflated tothe pres-
sure recommended bythe vehicl emanufa c-
turer onthe Tire andLoad ingInformation
pla card onthe driver' sdoor B-pillaror the
tire pressu relab elon the inside ofthe fuel
fill er flap .If you rvehicl ehas tires ofadiffer-
ent size than thesize indica tedonthe Tire
and Load ingInformation placard or,ifavai la-
ble, thetire pressu relab el,you shou ld
determine theprope rtire pressu refor those
tires.
As anadd edsafety feature ,you rvehicl ehas
been equippe dwith atire pressu remonitor-
ing system (TPMS)thatillumina tesalow tire
pressu retelltal ewhen oneormore ofyou r
tires aresignifi cantly underinflated. Accord-
ingly ,when thelow tirepressu retelltal e
ligh tsup, you shou ldstop andcheck your
tires assoon aspossi ble,and inflate themto
the prope rpressu re.Driving onasignifi -
cantly underinflated tirecause sthe tire to
overhea tand canleadto tire failure. Underinfla
tionalsoredu cesfuel efficie ncy
and tiretread life,and may affect thevehi-
cle's handl ingand stoppi ngability.Plea se
note thattheTPMS isnot asubs titute for
prope rtire maintenance, anditis the driv-
er's responsi bility tomaintai ncorrect tire
pressu re,even ifunderi nflation hasnot
reache dthe level totrigger illumina tionof
the TPMS lowtirepressu retelltal e.
You rvehicl ehas alsobeen equippe dwith a
TPMS malfunction indicatortoindica te
when thesystem isnot opera tingprope rly.
The TPMS malfunction indicatoriscombined
with thelow tirepressu retelltal e.When the
system detects amalfu nction, thewarni ng
lamp willflash forapp roximatel ya minute
and then remai ncontinuousl yillumina ted.
This sequ ence willbe repea tedevery time
the vehicl eis started aslong asthe malfu nc-
tion exists. Whenthemalfu nction indicator
is illumina ted,thesystem maynotbeableto
detect orsignal lowtirepressu reas inten-
ded.
TPMS malfunctions mayoccur foravarie ty
of reaso ns,includ ingthe install ationof
incompati blerepla cement oralterna tetires
or whee lson the vehicl ethat prevent the
TPMS fromfunctioning properly.Alwa ys
check theTPMS malfunction telltaleafter
repla cingoneormore tiresorwhee lson
you rvehicl eto ensure thattherepla cement
or alterna teTires andwhee lsall ow the
TPMS tocontinue tofunction properly.
It is the driver' sresponsi bility toset the tire
pressu reto that recommended forcold tires
which issui table forthe opera tingsitua tion
(Y page 308). Notethatthecorrect tirepres-
sure forthe current operatingsitua tionmust
first betaugh t-intothe tire pressu remonitor.
If asubs tantial lossofpressu reoccurs, the
warni ngthreshol dfor the warni ngmessa geis
ali gned tothe taugh t-inreference values.
Resta rtthe tire pressu remonitor afteradjust-
ing the pressu reofthe cold tires
(Y page 315).The current pressuresare
saved asnew reference values.Asaresul t,a
warni ngmessa gewillapp ear ifthe tire pres-
sure drops significantly. Tire
pressure
313Wheelsand tires Z

The
tirepressure monitordoes notwarn youof
an incorr ectlysettire pressure. Observethe
not eson the recomm endedtirepressure
(Y page 308).
The tirepressure monitorisnot able towarn
you ofasudden lossofpressure, e.g.ifthe
tire ispenetr atedbyaforeign object.In the
event ofasudden lossofpressure, bringthe
vehicle toahalt bybraking carefully. Avoid
abrupt steeringmovemen ts.
The tirepressure monitorhas ayellow warning
lamp inthe instr ument cluster forindicatin g
pressure lossoramalfunct ion.Whether the
warning lampflashes orlights upindicates
whether atire pressure istoo low orthe tire
pressure monitorismalfunct ioning:
R ifthe warning lampislit cont inuously, the
tire pressure onone ormore tiresissignifi-
cant lytoo low. Thetirepressure monitoris
not malfunct ioning.
R ifthe warning lampflashes foraround a
minute andthen remains litconst antly, the
tire pressure monitorismalfunct ioning.
In addition tothe warning lamp,amessage
appears inthe multifunct iondisplay .Observe
the inform ationondisplay messages
(Y page 224).
It may take uptoten minutes foramalfunc-
tion ofthe tire pressure monitortobe indica-
ted. Amalfunct ionwill beindicated bythe tire
pressure warninglampflashing forapprox-
imately oneminute andthen remaining lit.
When themalfunct ionhas been rectified, the
tire pressure warninglampgoesoutafter a
few minutes ofdriving.
The tirepressure valuesindicated bythe on-
board computer maydiffer fromthose meas-
ured atagas station withapressure gauge.
The tirepressures shownbythe on-board
computer refertothose measured atsea level.
At high altitudes, thetire pressure valuesindi-
cated byapressure gaugearehigher than
those shown bythe on-board computer. Inthis
case, donot reduce thetire pressures.
The operation ofthe tire pressure monitorcan
be affect edbyinter ferenc efrom radio trans-
mitt ingequipment (e.g.radio headphones,
two-way radios)thatmay bebeing operated in
or near thevehicle. Checking
thetire pressur eelectroni-
cally X
Make surethattheSmart Keyisin position
0048 inthe ignition lock(Ypage 125).
X Press 0059or0065 onthe steerin gwheel
to select theServ. Serv.
menu.
X Press the0063 or0064 button toselect
Tire Pressure Tire
Pressure.
X Press the0076 button .
The current tirepressure ofeach tireis
shown inthe multifunct iondisplay .
If the vehicle wasparked forlonger than
20 minutes, theTire pressure willbe Tire
pressure willbe
displayed afterdriving afew minutes displayed
afterdriving afew minutes
message isshown.
Aft erateach- inprocess, thetire pressure
monit orautomatically detectsnew wheels or
new sensors. Aslong asaclear allocation of
the tire pressure valuetothe individual wheels
is not possible, theTire Pressure Monitor Tire
Pressure Monitor
Active Active
message isshown instead ofthe tire
pressure display.The tirepressures are
already beingmonitored.
If an emergenc yspare wheel ismounted, the
system maycontinue toshow thetire pressure
of the wheel thathasbeen removed forafew
minutes. Ifthis occurs, notethat thevalue dis-
played forthe position wherethespare wheel
is fitt ed isnot thesame asthe current tire
pressure ofthe emergenc yspare wheel.
Tire pressur emonitor warning mes-
sages If
the tire pressure monitordetect sa pressure
loss inone ormore tires,awarning message is
shown inthe multifunct iondisplay .The yellow
tire pressure warninglampthenlights up.
R Ifthe Please Correct TirePressure Please
Correct TirePressure
message appearsinthe multifunct iondis-
play, thetire pressure inat least onetireis
too low. Thetirepressure mustbecorrec ted
when theopportunit yarises.
R Ifthe Check TirePressure Check
TirePressure message
appears inthe multifunct iondisplay ,the tire
pressure inone ormore tireshasdropped
significant ly.The tires must becheck ed.
R Ifthe Tire Pressure WarningTire Tire
Pressure WarningTire
Failure Failure
message appears,thetire pressure
in one ormore tireshasdropped suddenly.
The tires must becheck ed. 314
Tir
epr essureWheels andtires

X
Clean thewheel andwheel hubcontact sur-
fac es.
X Plac eth ene wwheel onthewheel huband
push iton .
X Tigh tenth ewheel boltsunt ilth ey are finger -
tig ht.
Loweri ngthevehi cle G
WAR
NING
The wheel sco uld come loos eif th ewheel
bolt sor wheel nutsare nottig hten ed tothe
pre scribe dtig hten ing torque .Ther eis aris k
of an acc iden t.
En sure that thewheel boltsor wheel nuts
are tighten ed tothepre scribe dtig hten ing
to rque.
If you arenotsure ,do notmov eth eveh icle.
Con tacta qualif iedspec ialist workshopand
have thetig hten ing torque check edimm edi-
ate ly.
X Plac eth erat chet wren chonto thehex agon
nut ofthejac kso that thelet ters AB are
vis ible.
X Turn therat chet wren chunt ilth eveh icle is
on ce again stand ingfirmly onthegro und.
X Plac eth ejac kto oneside. X
Tigh tenth ewheel boltseve nly inacr oss -
wise pattern intheseque nceind icat ed(0043
to 0083). Thespec ifiedtig hten ing torque is
96 lb-ft(130 Nm).
X Turn thejac kback toits initial posi tion.
X Stow thejac kand theres tof theveh icle
to ols intheveh icle again .
X Mer
cedes -AMGveh icles andvehicles
with AMG Line: usetheco ver oftheout er
sill.
X Chec kth etir epre ssur eof thene wly moun -
te dwheel andadjust itifne ces sary.
Obs erveth erec omm ended tirepre ssur e
(Y page 308).
Cana daonly: aslon gas you aredrivingwith
th eeme rgencyspar ewheel mounted, thetir e
pre ssur eloss warn ingsyst emcannotfun ction
reli ably. Onlyres tartth etir epre ssur eloss
warn ingsyst emwhen thedef ective wheel has
been replace dwit hane wwheel .
Veh icles withtirepr essu remon itor(USA
only) :all moun tedwheel smust beequipp ed
wit hfun ction ing sensors. Wh
eel and tirecomb inations Gener
alnot es
You canaskforinform ationreg ardin gper mit-
te dwheel /tire combin ationsatan auth orized
Mer cedes-Ben zCen ter.
You should regularly check thepre ssur eof the
eme rgencyspar ewheel ,part icular lyprio rto
lon gtrips, and correct thepre ssur eas neces -
sary (Ypage 308). The value onthewheel is
valid .
! For
safe tyreas ons,Mer cedes-Ben zrec om-
men dsthat you onlyuse tires and wheel s 330
Wh
eel and tirecomb inationsWheels andtires