flat tire MERCEDES-BENZ GLS 2021 Owners Manual

Light
andvisibili ty................................... 143
Ext eriorlighti ng............ ..............................143
Int erior lighti ng........ ......................... .......... 148
Wi ndsh ield wipe rand windsh ield wa sher
sy stem .................. ...................................... 150
Mir rors <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 155
Ar ea perm eable toradio wav eson the
winds hield.................................................. 158
Infr ared-r eflectiv ewindshi eldfunction ........ 158 Clim
atecontr ol........................................ 159
Ov ervie wof climat econt rolsy stems ..........1 59
Oper ating theclimat econ trol system ......... 160 Dr
ivin gand parking ................................. 168
Dr iving ............ ............ ........................ ........168
DY NA MIC SELE CTswitc h... ............... ......... 182
Au tomatic transmiss ion.................... .......... 185
Tr ans fercase ........... ................................... 189
Fu nctio nof the4MA TIC.............................. 191
Re fuel ing...... ............................................... 191
Pa rking .......................................................1 94
Dr iving and drivi ng safety systems .............. 201
Tr ailer hitch <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 269Ve
hicle towing instruct ions .............. ...........2 73 Ins
trum ent Disp layand on-b oard
com puter............ ............. ......................... 274
No teson theIns trument Displayand on-
boar dcom puter.............................. ............ 274
Ins trument Displayove rview .......................2 75
Ov ervie wof thebutt ons onthesteer ing
wheel ..........................................................2 76
Oper ating theon- boar dcom puter............... 276
Ov ervie wof what issho wnonthemulti‐
func tion displa y... ....................................... 278
Hea d-up Display ............ .............................278 MBUX
multimedia system ....................... 28 1
Ov ervie wand oper ation .................. ............ 281
Sy stem settings .............................. ............ 289
Na vig ation .......................................... ........292
Te lephon e........................................ ...........2 99
Mer cedes meand apps....... .............. .........302
Mer cedes -Benz emergency callsy stem ...... 309
Ra dio &media .................................. ...........3 13
Sou ndsettings <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 320 Main
tenance andcare............................. 321
ASS YSTPL US service interva ldispla y.........3 21
Engi necompar tment............ ...................... 322
Cl ea ning andcare............ ...........................328 Br
eak down assista nc e............ ................336
Emerg ency............. .....................................336
Flat tire....... ................................................ 338
Batt ery(v ehi cle) ....... .................................. 343
To w star tin gor towing away <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 349
Elec trica lfus es<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 353 Whe
elsand tires <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 356
No teson noise orunusua lhandling char‐
act eristic s...................................................3 56
No teson regular lyinsp ecting wheels and
tir es ............................................................ 356
No teson sno wch ains ................................ 357
Ti re pressur e.............................................. 357
Loading theve hicle .................................... 363
Ti re labeling ................................................ 367
Def inition ofterm sfo rtir es and loading ..... 372
Chan gingawheel .......................................3 75
Emerg encysparewh eel............ ..................385 Co
ntents 3

1
QRcode foraccessi ngthere scue card →
31
2 Safetyve sts →
336
3 mebutt onand SOS button →
304
4 Hazard warning light system →
145
5 Chec kingand refilling operatingfluids →
394
St artin gassis tance →
347
6 Tow- star tin gand towing away →
350
7 Flat tire →
338 8
Tow- star tin gand towing away →
350
9 Fuelfiller flap withins truct ion labels fortir e
pr essu re,fuel type andQRcode foraccessi ng
th ere scue card →
191
A Warning triang le →
336
B TIRE FITkit →
339
C First-ai dkit (softsided) →
337 At
aglanc e– Em erge ncie sand brea kdo wns 19

#
Activatecr uise contr olor theva riable limiter. #
Ifatraf fic sig nha sbee nde tected and isdis‐
pl ay ed intheins trument cluster: select J
wit hth elef tro ck er switc h.
The maximum permissible speedshownby
th etraf fic sig nis stor ed and theve hicle
maint ainsordoes notexc eed this speed.
Deactiv ating cruise contr ol #
Selec tO withth elef tro ck er switc h.
Deactiv atingcruise contr ol #
Select Nwithth eright rock er switc h.
% Ifyo ubr ak e, deac tivateES P®
or ifES P®
int erve nes, cruise contr olisde acti vated. DSR
(Downhill Speed Regulat ion) Fu
nction ofDSR (Downhill Speed Regulat ion)
DS Ris an aid toassis tyo uwhen drivin gdo wn‐
hill. Itke eps thespeed oftrav el at theselect ed
ta rget speed. Thesteeper thedo wnhill gradient,
th egr eat ertheDS Rbr aking effect on theve hi‐
cle. Onflat stre tche sof road and uphill gradi‐ ent
s,theDS Rbr ak es theve hicle minimally or
no tat all.
When DSRisactiv ated and thetransmission isin
position 005B,005Eor005C, DSRcon trols thedr iving
speed. Thetarget speed canbesetto ava lue
be tween 1mp h(2 km/h) and11mp h
(1 8 km/ h).Bybraking oracceler ating,youcan
dr ive at ahigh eror lowe rspee dth an theta rget
speed atanytime.
DSR isdeactiv ated aut omaticall yif yo udr ive at
spee dsgreat erthan 28 mph(45 km/h) orselect
dr ive pr ogr am C orB. Theî Offmes‐
sag eth en appear sin themultifunc tiondispla y.
The status indicat orinthemultifunc tiondispla y
disappear s.Yo ualso hear awa rning tone.
Mer cedes -Ma ybachvehicl es:indrive pr ogr am ,
th eDS Rfunc tion islikew ise notav ail‐
able. No
teson DSR &
WARNIN GRisk ofskid ding and accident
whe nDSR isacti vatedon slipper yro ad
sur faces
If th edr iven speed andtheta rget speed dif‐
fe r, th ewheels maylose traction . #
Take intoacc ount thero ad sur face and
th edif fere nce betwee nth edr iving
speed andtarget speed beforeactiv at‐
ing DSR. Obser
vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 201).
Yo uar ealw aysre sponsible forke eping control of
th eve hicle andforasse ssing whether thedo wn‐
hill gradient canbenego tiated. Depen dingon
ro ad sur face and tires, DSR mayno tal wa ys be
able tokeep totheta rget speed. Selectata rget
speed suitable forth een vironmen talcon dition s
and also applyth ebr ak es yourself ifre qu ired. 21
4
Driving and parking

Flat
tire No
tesin theeve ntofaflat tire &
WARNIN GRisk ofacci dent dueto aflat
tir e
A flat tirese verely affects thedr iving charac‐
te rist ics aswellas thesteer ing and braking
of theve hicle.
Ti re swith outrun-flat charact eristics : #
Donotdr ive wit haflat tire. #
Chan getheflat tireimm ediat elywit han
emer gency sparewheel orspar ewheel.
Alt ernat ivel y, consu ltaqu alif ied spe‐
cialis two rkshop.
Ti re swith run-flat charact eristics : #
Obse rveth einf ormation andwarning
no teson MOExt ended tires (run-f lat
tir e). In
theeve ntofaflat tire, thefo llo wing option s
ar eav ailable dependingon your vehicle's equip‐
ment :
R Vehicl eswith MOExt endedtir es: itis pos‐
sibl eto continu eth ejour neyfo ra shor t
per iod oftime. Makesur eyo uobse rveth e
no teson MOExt ended tires (run-f lattires)
(/ page338).
R Vehicl eswith aTIREF ITkit :yo ucan repair
th etir eso that itis poss ibletocontinu eth e
jou rney fora shor tper iod oftime. Todo this,
use theTIREFI Tkit (/ page339).
R Vehicl eswith Mercedes meconne ct:you
can makeacal lfo rbr eakdo wnassi stanc evia
th eov erhead control panel inthecase ofa
br eakdo wn(/ page304).
R Allvehicl es:chang eth ewheel
(/ page37 9).
% Theem erge ncy sparewheel isonl yav ailable
in cer tain coun tries. No
teson MOExt ended tires (run-fl attires) &
WARNIN GRisk ofacci dent whendr ivi ng
in limp -hom emod e
Whe ndr ivi ng ineme rgency modeth ehan‐
dling charact eristic sar eim pair ed. #
Donotexc eed thespecif iedmaximum
speed oftheMOEx tende dtir es. #
Avoid anyabr uptst eer ing and driving
maneuv ersas wellas drivin gove r
obs tacle s(cu rbs, pothol es, off-r oa d).
Thi sap plies, in pa rticular ,to aloaded
ve hicle. #
Stop driving intheemer gency mod eif
yo uno tic e:
R Ban gingno ise
R Vehicle vibration
R Smok ewhic hsmells likeru bber
R Contin uousESP®
int erve ntio n
R Crac ks inthetir eside walls #
Afterdr iving inemerg encymode, have
th erims checkedby aqu alif ied spec ial‐ 338
Break down assis tance

is
two rkshop withre ga rd totheir further
use. #
The defective tir emus tbe replaced in
eve rycase . Wi
th MOExt ended tires (run-f lattires), youcan
co ntinue todrive yo ur vehicle evenif th er eis a
tot alloss ofpressur ein on eor mor etir es. How‐
eve r,th etir eaf fect ed mus tno tsho wan ycle arly
vis ible da mag e.
Yo ucan recogni zeMOExt endedtir es by the
MOExt ended marking whichappear son theside
wa llof thetir e.
Ve hicl eswith tirepr ess uremonit oring sys‐
te m: MOExt endedtires ma yonly beused incon‐
junc tionwi th an act ivat ed tirepr essur emon itor‐
ing system.
If apr essur eloss warning mess ageappear sin
th emultifunc tiondispla y,proceed asfollo ws :
R Chec kth etir es fordama ge.
R Ifdr iving on,obser vethefo llo wing notes. Dr
iving distance possible inemer gency
mode afte rthe pres sur elo ss wa rning: Load
condit ion Driving distance pos‐
sible inemer gency
mode
Pa rtiall yladen 50miles (80km)
Fu lly laden 19mile s(30 km) The
driving distance possi ble in eme rgency
mod ema yva ry dependin gon thedr iving style.
Obser vethemaximum permissible speedof
50 mph(80 km/h).
If atir ehas gone flat and cannotbe replaced
wit han MOEx tende dtir e, youcan useast and‐
ar dtir eas ate mp orarymeasur e. TIREFIT
kitstorage location The
TIREF ITkit islocat edunder thecar gocom‐
par tmen tfloor . Ex
am ple: TIREFIT kit
1 Tire seala ntbottle
2 Tire inflation compressor Using
theTIR EFIT kit Re
quirement s:
R Tire seala ntbottle and tireinf lation compres‐
sor (/ page339).
R TIREFIT sticke r
R Gloves(depending ontheve hicle equipment)
Yo ucan useTIRE FITtir esealan tto seal perfora ‐
tio nda ma geofup to0.16 in(4 mm), particular ly Br
eakdo wnassis tance 33
9

th
ose inthetir econ tact surface. Youcan use
TIRE FITin out side temp eratur esdown to-4 °F
(-20 °C). &
WARNIN GRisk ofacci dent whenus ing
tir esea lant
The tiresea lant ma ybe una ble to seal the
tir epr op erly,especiall yin thefo llo wing
cases :
R Ther ear ecut sor punc tures inthetir e
larg erthan damag epr ev iousl ymen ‐
tion ed.
R The wheel rim isdama ged.
R Youha ve driven atvery low tirepr essur e
or on aflat tire. #
Donotcon tinue drivin g. #
Con sult aqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofinju ryand poiso ning
fr om tiresealan t
The tiresealan tis har mfuland caus esirrita ‐
tio n.Do notal lo w itto come intocont act wi
th theskin ,ey es orclo thing, and donot
sw allo wit. Do notinhale tiresealant fumes.
Ke ep thetir esealant away from childr en.
If yo uco me intoco ntact withth etir esealant,
obser vethefo llo wing: #
Rinse offth etir esealant from your skin
imm ediat elyusin gwa ter. #
Iftir eseal antgets int oyo ur eyes, thor‐
oughl yrinse outth eey es using clean
wa ter. #
Iftir eseal anthas been swallowe d,
immediat elyrinse outth emout hth or‐
oughl yand drink plenty ofwa ter.Do not
ind uce vomiting andseek medica l
att ention immedi ately . #
Cha ngeout ofanyclo thes con tamina‐
te dwit htir esealant immediat ely. #
Ifall ergic react ionsocc ur,seek medical
att ent ion imm ediat ely. *
NO
TEOverhea ting dueto thetir einf la‐
tion compressor running toolong #
Donotru nth etir einf lation compressor
fo rlong erthan tenminu teswit hout
int erru ption. Com
plywit hth emanuf acturer'ssafetyno teson
th est icke ron thetir einf lation compressor .
Ha ve thetir esealant bottle replaced inaqu ali‐
fi ed specialis two rkshop everyfive years. #
Donotre mo veanyfo re ign obje ctswhic h
ha ve ent ered thetir e. 34
0
Brea kdo wnassista nce

#
Affix pa rt1 oftheTIREFI Tst icke rto the
ins trumen tclus terwit hin thedr iver's field of
vision. #
Affix pa rt2 oftheTIREFI Tst icke rnear the
va lve on thewheel withth efa ulty tire. #
Pull plug 4withcabl eand hose5 out of
th etir einf lation compressor housing. #
Push plugofhose 5intoflang e6 oftire
sealan tbo ttle 1 untilth eplug engages. #
Place tiresealant bottle 1 head down wards
int ore cess 2ofthetir einf lation compres‐
sor . #
Remo vethecap from valve 7 onthefa ulty
tir e. #
Screw filling hose 8ontova lve 7. #
Insertplug 4intoa12 Vsoc ketin your
ve hicle. #
Switc hon theignition . #
Switc hon thetir einf lation compressor using
On/ Offswitc h3.
The tireis inf lated. First,tir esealant ispum‐
ped intoth etir e. The pressur ema ybr ief ly
ri se toappr oximat ely500 kPa(5 bar/7 3psi).
Do notswitc hof fth etir einflat ioncom pres‐
sor during this pha se. #
Letth etir einf lation compressor runfo ra
maximu mof tenminu tes.
The tireshould then have attaine datir e
pr essur eof at leas t20 0kP a(2. 0bar/
29 psi).
If tir esealan tleak sout ,mak esur eyo ucle an the
af fect ed area asquickl yas possible .It is prefer a‐
ble touse clean water.
If yo uge ttir ese alant onyour clo thing, have it
clean edassoon aspossible withper chlor oethy‐
len e.
If, afte rte nminut es,atir epr essur eof
200 kPa(2.0 bar/29 psi)hasnotbeen
attained: #
Switc hof fth etir einf lation compressor . Br
eakdo wnassis tance 34
1

No
teson sno wch ains &
WARNIN GRisk ofacci dent dueto inc or‐
re ct mou nting ofsno wch ains
If yo uha ve mount edsno wch ains tothefront
wheels, thesno wch ains maydr ag agains t
th eve hicle body orchassis components.
This couldcaus edamag eto theve hicle or
th etir es. #
Nevermount snowch ains onthefront
wheels. #
Onlymount snowch ains onthere ar
wheels inpair s. *
NO
TEDama getocom pone ntsofthe
ve hicle body orchassis duetofitt ed
sno wch ains If
yo ufit sno wch ains tothefront wheels of
4MA TICvehicles, youma ydamag eco mp o‐
nent sof theve hicle body orchassis . #
Onlyfit sno wch ains tothere ar wheels
of 4MA TICvehicles. R
Sno wch ains areon lype rm issible forcer tain
wheel/t ire com binat ions.Yo ucan obtain
inf ormat ionabout this from anaut hor ized
Mer cedes -Benz Cent er.
R Forsaf etyre ason s,on lyuse snow chains that
ha ve been specif icallyapproved foryo ur
ve hicle byMer cedes-Ben z,or sno wch ains
wit hth esame qualit yst andar d.
R Ifsn ow chains areins talled, themaximum
per missible speedis30 mph(50 km/h).
R Vehicl eswith Activ ePa rking Assis t:Do
no tuse ActivePa rking Assistwhen snow
ch ains areins talled.
R Vehicl eswith AIRMA TICorE-AC TIVE
BO DY CONT ROL:Ifsn ow chains areins tal‐
led, onlydr ive at raised vehicle leve l.
% Youcan deac tivateES P®
to pull away
( / pag e205). Thisallowsthewheels to
spin, achie ving anincr eased driving forc e. Ti
re pres sur e No
teson tirepr essur e &
WARNIN GRisk ofacci dent dueto insuf ‐
fi cie ntor excess ive tir epr ess ure
Under inflate dor ove rinf late dtir es pose the
fo llo wing risk s:
R The tires ma ybur st,especiall yas the
load andvehicle speed increase.
R The tires ma ywe arexc essiv elyand/or
une venly, whic hma ygr ea tly impair tire
traction .
R The drivin gch aract eristic s,as wellas
st eer ing and braking, maybe greatl y
im pair ed. #
Com plywithth ere comme ndedtire
pr ess ureand checkth etir epr essur eof
all tires including thespar ewheel regu‐
lar ly:
R atleas tonce amont h
R when theload chang es Whee
lsand tires 35
7

pr
essur ete lltale when oneormor eof your
tir es issign ifican tly unde r-inf lated. Accor d‐
ing ly,whe nth elow tirepr essur ete lltale illu‐
min ates, yousho uld stop and checkyo ur
tir es assoo nas poss ible, andinflateth em to
th epr oper pressur e.Driving onasignif i‐
cant lyunder -inflated tirecauses thetir eto
ove rheat and canlead totirefa ilur e.Un der -
inf lation alsoreduces fuelefficie ncy and tire
tr ea dlife ,and mayaf fect theve hicle's han‐
dling andstopping ability.Please note that
th eTPMS isno ta subs titutefo rpr oper tire
maint enance, anditis thedr iver's responsi‐
bility tomaint aincorrect tirepr ess ure, eve n
if under -inflatio nhas notre ac hed theleve lto
tr ig ge rill umina tionoftheTPMS low tirepr es‐
sur ete lltale.
Yo ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic ateth at
th esy stem isno toper ating proper ly.The
TPMS malfunct ionindicat oriscombin edwith
th elow tirepr essur ete lltale. When thesy s‐
te m detects amal functi on,theindicat or
lam pwill flash forapp roxima tely one minu te and
then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofreplace‐
ment oralternat etir es orwheels ontheve hi‐
cle that prev ent theTPMS from func tioning
pr oper ly.
Alw aysch eckth eTPMS malfunct iontelltale
af te rre placing oneormor etir es orwheels
on your vehicle toensur eth at there place‐
ment oralternat etir es and wheels allowthe
TPMS tocontinu eto function proper ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed totheve hicle
by means ofatir epr essu resensor .
The tirepr essur eand thetir ete mp eratur e
appear inthemultifunc tiondispla y
(/ page362). 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 viadisp lay messa ges(/ page455)
R viathe0077 warning lam pin theins trument
clus ter(/ page47 2)
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 .
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 manually (/page362).
Sy stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing situat ions:
R thetir epr essur ehas been setincor rectl y
R ther eis asudden pressur eloss caused, for
ex am ple, byafo re ign obje ctpene tratin gth e
tir e Wh
eelsand tires 36
1

and
one-h alftim esaswellon thego vernment
te st trac kas atir egr ad ed 100.
The relativ eper form anc eof tires depen dsupon
th eactual conditions oftheir use, howe ver,and
ma ydepar tsign ifican tly from thenor mdue to
va riatio nsindrivin ghabit s,ser vicepr act icesand
dif fere nces inroad charact eristic sand climate
con dition s.
Tr actio ngr ade &
DANG ER Risk ofacc iden tdue toinade‐
qu atetract ion
The tract ion grade assig nedtothis tireis
based onstra ight -ahead brakin gtract ion
te sts, and does notinclude either acceler a‐
tion, corner ing, hydroplaning orpeak traction
ch aract eristic s. #
Alw aysadap tyo ur drivin gst yle and
dr ive at aspeed tosuit thepr ev ailin g
traf fic and weather condition s. *
NO
TEDama getothedr ivet ra in from
wheelspin #
Avoid wheelspin. The
traction classes, from highes tto lowe st,ar e
AA ,A, Band C.Tho segrad es repr esent thetir e's
ability tostop onwetpa vement asmeasu red
unde rco ntro lled condition son spec ified govern‐
ment test sur faces ofasp haltand concr ete. A
tir emar kedC ma yha ve poor traction perform ‐
anc e.
Te mp eratur egr ade &
WARNIN GRisk ofacci dent from tire
ove rheating andtirefa ilur e
The temp eratur egr ade forth is tireis es tab‐
lished fora tir eth at isproper lyinflat ed and
no tove rloaded. Excessiv espeed, underinfla‐
tion, orexc essiv eloading, either separ ately
or incombin ation,cancause excessiv eheat
build-up andpossible tirefa ilur e. #
Obser vethere comme ndedtirepr es‐
su resand regular lych eckth etir epr es‐ sur
eof all tires including thespar e
wheel. #
Adjus tth etir epr essur eas neces sary. The
temp eratur egr ades areA (the highes t),B
and C.The yre pr esent thetir e's resis tance tothe
ge ner ation ofhea tand itsability todissipat e
heat when tested under controlled conditions on
a specif iedindoor laborator yte st wheel. Sus‐
ta ined hightemp eratur ecan cause themat erial
of thetir eto deg ener ateand reduce tirelife, and
exc essiv ete mp eratur ecan lead tosudden tire
fa ilur e.Grade Ccor responds toaleve lof per‐
fo rm anc ewhic hall passe nger car tires mus t
mee tunde rth eFe der alMo torSaf etySt andar d
No. 109. Grade sB and Arepr esent higher leve ls
of per form anc eon thelabor ator yte st wheel
th an theminimum requ ired bylaw. DO
T,Tire Iden tificat ionNumbe r(TI N) US
tirere gulations stipulat eth at eve rytire man‐
uf actu reror retrea de rmu stimprint aTIN inor
on theside wallof eac htir epr oduced. 368
Wheels andtires