TPMS MERCEDES-BENZ GLA 2020 Owners Manual

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