2020 MERCEDES-BENZ GLS sensor

allo
wtheTPMS tocontinu eto function prop‐
er ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed ontheve hicle
by means ofatir epr essu resensor .
Ne wtirepr essur esensor s,e.g. inwint ertires,
ar eaut omaticall yta ught -indur ing thefirs tjou r‐
ne yth ey areused.
The tirepr essur eand thetir ete mp eratur e
appear inthemultifunc tiondispla y
(/ page51 9).
If th er eis asubs tantia lpr ess ureloss orifth e
tir ete mp eratur eis exc essiv e,youwill bewarned
in thefo llo wing ways:
R Viadispla ymes sages(/ page61 4)
R Viath e0077 warning lam pin theins trument
clus ter(/ page634)
The tirepr essu remonit oring system isonl yan
aid. Itis thedr iver's responsibili tyto setth etir e
pr essur eto there comme ndedcoldtirepr ess ure
su itab leforth eoper ating situation .Se tth etir e
pr essur efo rcold tires using atir epr essu re ga
ug e. No tethat thecor rect tirepr ess urefo rth e
cur rent operati ng situa tionmu stfirs tbe taught -
in to thetir epr essur emonit oring system.
In mos tcases, thetir epr essur emonit oring sys‐
te m wil lau tomatical lyupd ateth ene wrefere nce
va lues afte ryo uha ve chang edthetir epr essur e.
Yo ucan ,ho we ver,also updat eth ere fere nce val‐
ues byrestar tin gth etir epr essur emonit oring
sy stem manuall y(/ page520).
Sy stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing situat ions:
R The tirepr essur ehas been setinc orrectl y
R The reisasudden pressur eloss caused, for
ex am ple, byafo re ign obje ctpene trating the
tir e
R Thereis ama lfunctio ncau sedby ano ther
ra dio signal source
Be sureto also payatt ent ion tothefo llo wing
re lat ed topic:
R Noteson tirepr essur e(/ page51 5) Ch
ecking thetir epr essur ewit hth etir epr es‐
sur emoni toring system
Re quirement s:
R The ignit ionisswitc hedon.
On- boar dcom puter:
4 Service 5
Tires
One ofthefo llo wing displa ysappear s:
R Cur rent tirepr ess ureand tirete mp eratur eof
th eindividual wheels: R
Tire pressure willbedisplayed afterdriving a
few minutes
R Tire Pressure MonitorAct ive: thete ac h-in
pr oce ssofthesy stem isno tye tcomple te. Wheels
andtires 51
9

of
skidding orhydroplaning onwetro ads is
inc reased.
In addit ion,th etir egr ip isgreatl yre duced at
a low outside temp eratur eand tireru nning
te mp eratur e. #
Switc hon theES P®
and adap tyo ur
dr ivin gst yle accor dingly. #
Use M+S tireat outside temp eratur es
of less than 10 °C (50 °F). Obser
vethefo llo wing when selecting,ins talling
and replacing tires:
R Onlyuse tires and wheels ofthesame type
(summer tires, wint ertires, MOEx tende d
tir es) and thesame make.
R Onlyins tallwheels ofthesame sizeonone
axle (leftand right).
It is onl yper missible toins talla dif fere nt
wh eelsi ze intheeve ntofaflat tirein order
to drive to thespecialis two rkshop.
R Onlyins talltir es ofthecor rect size ontoth e
wheels. R
Vehicl eswith atir epr ess uremonit oring
sy stem: Allinstalled wheels mustbe equip‐
ped withfunc tioningsensorsfo rth etir e
pr essur emonit oring system.
R Attemp eratur esbelo w45 °F(7°C), usewin‐
te rtir es orall-seaso ntir emar kedM+S forall
whee ls.
Wi nter tires bearing the004D snowflak esym‐
bol inaddition totheM+S marking prov ide
th ebes tpossible grip inwintr yro ad con di‐
tio ns.
R ForM+S tires, only usetires wit hth esame
tr ead.
R Obser vethemaximum permissible speedfor
th eM+S tires installed.
If th is isbelo wtheve hicle's maximum speed,
th is mus tbe indic ated byan appr opriate
label inthedr iver's field ofvision.
R Break inne wtires atmoder atespeeds for
th efirs t60 miles(1 00 km) .
R Replace thetir es afte rsix yearsat thelat est,
re ga rdless ofwe ar. R
Wh enreplac ingwith tires that donotfe a‐
tur eru n-flat charact eristics :Ve hicles with
MOExt ended tires areno teq uipped witha
TIREFIT kitatthefa ct or y. Eq uip th eve hicle
wit haTIREFIT kitafte rre placing withtir es
th at do notfe atur eru n-f latch aract eristic s,
e.g .wint ertires.
Fo rmor einf ormation onwhee lsand tires, con‐
tac ta qu alif ied spec ialistwo rkshop.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page52 2)
R Tire size designation, load-bearing cap acity,
spe edrating andload index(/ pag e529)
R Tire pressur eta ble (/ page51 6)
R Noteson theemer gency sparewheel
(/ page54 4) 536
Wheelsand tires

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0049 Malfunct ionSee Opera-
tor’s Manual *T
heexterior lighting ismalfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
0049 Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqu alif ied spec ialistwo rkshop.
0049 Act ive Headla mpsInopera-
tive *T
heactiv eheadla mpsar emalfunctioning. #
Consult aqu alif ied spec ialistwo rkshop.
0049 Switch OnHeadla mps *Y
ouaredr iving without low- beam headlam ps. #
Turn thelight switc hto the0058 or0058 position . 57
4
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
ç
ð
00C7
¸ Currently Unavailable
Radar SensorsDirty *T
heradar sensor system ismalfunct ioning.Possible causes:
R Dirton thesensor s
R Hea vyrain or sno w
R Extende dcou ntrydr ivi ng without other traf fic, e.g. inthedeser t
Dr iving systems anddriving safetysy stems maybe malfunct ioningortemp orarily una vailable.
Onc eth ecause ofthepr oblem isno long erpresent ,th edr iving systems anddriving safetysy stems willbeavailable
ag ain.
If th edispla ymessag edoes notdisappear : #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Clean allsen sors(/ page490) . #
Restar tth eengine. Displa
ymessag esand warning/ indic ator lam ps 60
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Drive th eve hicle fora whi leto charge the12 Vbatt eryand the48 Vbatt eryaf te rdisconnecting thech arge r
fr om theve hicle.
If th eEn gine CanNow BeStarted displaymessag edoes notappear afte ra fe w min utes: #
Tryto star tth eengine again. #
Ifth eengine doesnotst ar t,con sult aqu alif ied spec ialistwo rkshop. Ti
re pres sur emoni tor Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Tire Press. MonitorCur-
rent lyUnavailable *T
her eis int erfere nce from apo we rful radio signal source.Asare sult, nosignals from thetir epr essur esensor sar e
being recei ved. The tirepr essur emonit oristemp orarily una vailable. #
Drive on.
The tirepr essur emon itor will restar taut omat icallyas soon asthecause hasbeen rectif ied.
Tir ePre ss. Moni torInope ra-
tive *T
hetirepr essur emonit orismalfunctionin g. &
WARNIN GThe reisarisk ofan accident ifth etir epr essur emonit oring system ismalfunct ioning
If th etir epr essur emonit oring system ismalfunct ioning,itis no table toissue awa rning ifth er eis pressur eloss
in one ormor eof thetir es.
Und erinf lated tires ma y,forex am ple, impair thedr iving, steer ing and braking charact eristic s. 61
4
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Have thetir epr essur emonit oring system checkedat aqu alif ied spec ialistwo rkshop. #
Consult aqu alif ied spec ialistwo rkshop.
Tire Pressure MonitorInop-
erative NoWheel Sensors *T
hewheels installed donotha ve suit able tirepr essur esensor s.The tirepr essur emonit orisdeactiv ated. #
Installwheels withsuit able tirepr essur esen sors.
0077 Wheel Sensor(s )Missin g *T
her eis no signal from thetir epr essur esensor ofone ormor ewheels. Nopressur eva lue isdispla yedfo rth eaf fec‐
te dtir e. #
Have thefa ulty tirepr ess uresen sor replaced ataqu alif ied spec ialistwo rkshop.
0077 Check Tires *T
hetirepr essur ein one ormor etir es has dropped significantl y.The wheel position isdispla yed. &
WARNIN GRisk ofan acci dent dueto insuf ficie nttirepr ess ure
Ti re pressur esthat areto olow pose thefo llo wing hazar ds:
R The tires ma ybur st,especiall yas theload andvehicle speed increase.
R The tires ma ywe arexc essiv elyand/or unevenly, whic hma ygr eatl yim pair tiretract ion.
R The drivin gch aract eristic s,as wellas steer ing and braking, maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Obser vethere comme ndedtirepr ess ure. Disp
lay mess ages and warning/ indic ator lam ps 61
5

Engine
Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p The
redcoolant warning lam pis lit while theengine isrunning .
*P oss ible cau ses:
R The temp eratur esensor ismalfunct ioning
R Coolant leve lto olow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceed edthemaximum permissible temp eratur e. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. Donotcon tinue
dr iving under anycir cums tances. #
Notethemessag eson themultifunc tiondispla y.
If th ecoolant temp eratur edispla yis at thelowe rend ofthete mp eratur escale: Displa
ymessag esand warning/ indic ator lam ps 625

Endi
ng............ .....................................439
No tes .................................................. 438
Ov ervie w ......... ................................. ... 437
Sound settin gs .................................... 439
Tr ans ferred vehicle data......................4 41
Assis tance
Men u(on -boardco mp uter) .................. 308
Assis tance systems
see Drivin gsaf etysy stem
ASS YSTPL US <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>476
Batt erydi sconnecti onper iods............. 477
Dis play ing theser vice duedate........... 476
Fu nctio n/no tes .................................... 476
Re gular maint enance work <0011001100110011001100110011001100110011001100110011001100110011
00110011> 476
Speci alser vice requ iremen ts...............4 76
ATA (anti-thef tala rm system) ...................9 7
Ac tivati ng/d eactiv ating theint erior
mo tion sensor .....................................1 00
Ar ming/di sarming theto w- aw ay
alar m.....................................................9 9
Dea ctivating thealar m.......................... 98
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 97
Fu nctio nof theint erior motion sensor ..99
The tow- aw ay alar mfun ction .......... .......9 8 AT
TENTI ONASSIST <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 287,28 8
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>287
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011>288
Sy stem limit ations ........................... ....2 87
At tention assistant
see ATTENTION ASSIST
Au thorized Mercedes- BenzCenter
see Qualif iedspec ialistwo rkshop
Au thorized workshop
see Qualif iedspecialis two rkshop
Au tomatic carwa sh mode
Ac tivati ng ........... ................................. 484
Au tomatic distanc eco ntr ol
se eAc tiveDis tance AssistDIS TRONI C
Au tomatic drivin glights ........... ............ ..156
Au tomatic engine star t(E CO star t/
sto pfunc tion) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> .......192
Au tomatic engine sto p(E CO star t/
sto pfunc tion) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> .......192
Au tomatic fron tpass engerfr on tair‐
bag shutoff <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 45,47
Fu nctio nof theaut omatic front
passeng erfront airbag shutoff......... ..... 45 PA
SSENGER AIRBAGind icat orlam p.....4 7
Au tomatic fron tpass engerfr on tair‐
bag shutoff
see Automatic front pass engerfront
airb agshut off
Au tomatic mirrorfo lding function
Ac tivati ng/d eactiv ating ........... ............169
Au tomatic seat adjus tment
Se tting ............ .....................................115
Au tomatic trans mis sion
DIR ECT SELEC Tleve r..... ......................199
Dr ive pr ogr am disp lay ............ ..............198
Dr ive pr ogr ams............ ........................ 196
DY NA MIC SELE CTswitc h.................... 196
Eng aging drive po sitio n............ ............ 201
Eng aging neu tral ............ ..................... 200
Eng aging park position ........................ 200
En gaging reve rsege ar .........................2 00
Kic kdo wn ....... .....................................203
Manu alge arshif ting.............................2 01
St eer ing wheel paddle shifters ............ 201
Tr ans miss ionposit iondispla y.............. 199
Tr ans miss ionposit ions........................ 199 Inde
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