2021 MERCEDES-BENZ GLS SUV warning light

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
Ti re swit hinsuf ficie nttirepr ess urema yim pa irth edr iving charact eristic sas wellas steer ing and braking. #
Have thetir epr essur emonit oring system checkedat aqu alif ied spec ialistwo rkshop. 0077
Ti re pressur emonit oring
sy stem warning lam plight s
up The
yello wtirepr essur emon itor ing system warning lam p(pr essur eloss/ malfun ction) islit.
*The tirepr essur emon itor ing system has detected tirepr ess urelos sin at leas tone ofthetir es. &
WARNIN GRisk ofan acci dent dueto insuf ficie nttirepr ess ure
R The tires can burst.
R The tires canwearexc essiv elyand/or unevenly .
R The drivi ng charact eristic sas wellas thesteer ing and braking maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Obser vethere comme ndedtirepr ess ures. #
Adjus tth etir epr essur eif neces sary. #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Chec kth etir epr essur eand thetir es. Displa
ymessag esand warning/ indic ator lam ps 47
3

Hill
star tassi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 227
HOL Dfunc tion<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 228
Fu nctio n/no tes ...... ............................. 228
Switc hingon/of f................................. 228
Home screen (media display)
Ov ervie w .................. ........................ ... 282
Hood Opening/closing ................................. 322 I
Identif ication plate
Engine .................................................3 92
Re frig er ant .................. ........................ 400
Ve hicle ............................................. ... 392
Ignition Switc hingon(Start/S topbutt on) ........ 168
Ignit ionkey
see Smar tKey
Imm obiliz er................................................ 90
Indi catorlam ps
see Warning/ indic ator lam ps
Individ ualdrive pr og ram
Con figur ing ......... ................................. 184 Sel
ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 184
Insid ere ar vie wmir ror
see Exterior mir rors
Insp ectio n
see ASSYST PLUS
Ins trument cluster
Fu nctio n/no tes ............................2 74,27 5
Ins trum ent Disp lay
Fu nctio n/no tes ................................... 275
Ins trument cluster ..... ............................ 10
Wa rning/ indic ator lam ps................ .... 460
Ins trum ent Displa yand on-boa rd
com puter
Fu nctio n/no tes .................................... 274
Int ellig entLight System
Ad aptiveHig hbeam Assis t.............. .....1 46
Cor nering light ....... ............................ ..146
Int erior ligh ting.......................................1 48
Ambient lighting .................................. 149
Re adin glight .................................. ...... 148
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 148
Swi tch-of fdel aytim e........... ................149 Int
erior motion sensor
Ac tivati ng/d eactiv ating ........... ..............92
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 92
In te rn et radio
see TuneIn
Io nizatio n
Ac tivati ng/d eactiv ating (MBUX mul‐
tim ediasystem) ................................... 163
iPhone ®
see Smar tphoneintegratio n® J
Jac k
St or ag elocation ..................................3 78
Jum p-startconne ction ............................3 47
Gene ralno tes ...................................... 345 K
KEY LESS-GO
Loc king theve hicle ................................ 71
Pr oblem .................................................7 2
Un loc kin gse tting .................................. 68
Un loc kin gth eve hicle ............................7 1 490
Index

Kic
kdow n......... ........................................1 88
Using .............. .....................................188
Knee airbag ...... .......................................... 42 L
Label ing(tires)
see Tire labeling
Lam p
see Interior light ing
Lam ps(Ins trum ent Displa y)
see Warning/ indic ator lam ps
Lane detection (automatic )
se eAc tiveLa ne Keeping Assist
Lane Keeping Assist
see ActiveLa ne Keeping Assist
LA TC H-type (ISOFI X)child seat secur‐
ing system
In stallin g................................................ 57
Leg rest
At tach ing/ remo ving theadditional
cushion ................................................ 100
Le velcontr olsystem
see AIRMA TIC see
E-AC TIVE BODY CONTR OL
Light switch
Ov ervie w ........................................ .....1 43
Lig hting
see Interior lighting
see Ligh ts
Lig hts ........................................................ 143
Ad aptiveHig hbeam Assis t.............. .....1 46
Au tomatic driving lights..... .................. 144
Comb inationswit ch<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 144
Cor nering light <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ...........146
Haza rdwa rning light s.................... ...... 145
High beam............ ...............................144
High -beamflasher ...............................1 44
Light switch..... .............................. ......1 43
Lo w-beam headlam ps.................... .....1 43
Pa rking light s.................................. .....1 43
Re ar foglam p................................. ..... 143
Re sponsibili tyforlig hting systems ...... 143
Se tting theex terior lighting switch-
of fdela ytime ................................. ...... 147
St andi nglight s................................ .....1 43
Switc hingthesur round lighting
on /of f.................................................1 48
Tu rn signal light................................... 144 Limit
edWa rranty
Ve hicle ................................................... 31
Limit ingtheopenin gang le(tailg ate) ...... 80
Liv eTr af fic Inf orma tion
Swit ching thetra ffic inf ormatio ndis‐
pla yon ................................................ 298
Load index(tir es) .................................... 370
Load protection net
At tach ing .............................................1 30
Lo ad-bear ingcapaci ty(tir es) .................370
Load ing.....................................................1 31
Bag hook<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>....131
Car gotie-do wn rings <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ....131
Coat hook ............................................ 132
Def initio ns ............ ...............................372
No tes ................................................... 119
Ro oflugg agera ck <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 133
Load ingguid elines ...................................1 19
Load inginforma tion table ...................... 363
Load s
Sec uring ...............................................1 19 Inde
x49
1

On-boar
dcom puter................................. 276
Dis play ing theser vice duedate........... 321
Head-up Displaymenu ........................ 279
Multifunction display........................... 278
Oper ating ...... ....................................... 276
Ov ervie wof menus .............................. 276
On-boar ddiagnos ticsinterface
see Diag nostics con nection
Online services
Dat ast or ag e .......................................... 33
Open-sour cesof tware .............................. 34
Opening thetailg ateusing your foot
HANDS-FREE ACCES S.................... .......7 8
Oper ating fluids
Ad ditiv es(fuel) .................................... 396
Br ak efluid ...........................................3 98
Coo lant (engi ne)....... ........................... 398
Engine oil....... .....................................396
Fu el(gasoline) .....................................3 95
No tes ................................................... 394
Re frig er ant (airconditio ningsystem) ...400
Wi ndsh ield wa sher fluid ...................... 399
Ope ratin gsaf ety
48 Von-boa rdelectr icalsystem ............ 25 Dec
laration ofcon form ity (wir eless
ve hicle component s)........................ ..... 27
EQ boost............. ..................................25
Inf orma tion............. .......................... .....25
Ope ratin gsy stem
see On-bo ardcom puter
Oper ator' sMan ual
Ve hicle equipment ........................... ...... 23
Oper ator's Manual (digital) ......................2 0
Op timiz edacceler ation........................... 172
Ac tivati ng ........... ................................. .172
Ov erhead controlpanel
Ov ervie w .......................................... ...... 12 P
Pa int code ................................................ 392
Pa intw ork(cleaning instructions) .......... 331
Pa nel heating
Se tting ............................................. ..... 111
Pa nic alar m................................................ 68
Ac tivati ng/d eactiv ating ........... ..............68 Pa
nor ama roof wit hpo we rtil t/s lidin g
pane l
see Sliding sunroo f
Pa rk pos ition
Inser ting<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> .............186
Sel ecting automatical ly<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 186
Pa rking
see Elec tric par kingbr ak e
Pa rking aid
see Parking AssistPA RK TRONI C
Pa rking Assis tPA RK TRONI C<0011001100110011001100110011001100110011001100110011001100110011
00110011> 244
Ac tivati ng ........... ................................. 248
Ad jus ting warning tones <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 249
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 244
Sid eim pa ct protect ion ........................ 247
Swi tching off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 248
Sy stem limit ations ...............................2 44
Pa rking assis tance systems
see ActivePa rking Assist
Pa rking brak e
see Elec tric par kingbr ak e
Pa rking foran extended period .............2 00
Pa rking light s...........................................1 43 Inde
x495

Ve
hicl eke y
see Smar tKey
Ve hicl eleve l
Se tting individu alwh eel contr ol........... 243
Ve hicl emaint enance
see ASSYSTPL US
Ve hicl eoper ation
Outsi detheUS Aor Canada ...................2 4
Ve hicl eto ol kit ........................................ 339
TIRE FITkit ...........................................3 39
To wing eye ....................................... ... 352
Ve hicl ewith ahigh center ofgrav ity .......2 9
Ve ntilat ing
Con venie nce openi ng <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...83
Ve ntilat ion
see Climat econt rol
Ve nts
see Airvents
VIN <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...........392
Ide ntif icationplat e <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....392
Sea t<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ....392
Wi ndsh ield <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011>392Vi
sion
Re mo ving condensatio nfrom the
windo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 162
Wi ndsh ield hea ter ..... ...........................164
Vo ice Contr olSy stem
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>284
St artin g.......................................... .....2 85 W
Wa rning lam ps
see Warning/ indic ator lam ps
Wa rning system
see ATA(anti-t heftal ar m system)
Wa rning triang le
Re mo ving ............................................ 336
Se tting up........................................ .... 337
Wa rning/indicat orlam p
0025 ABSwa rning lam p...................... 470
004D Brak esy stem warning lam p
(Canada only).................................. .... 468
0027 Brakewa rning lam p(US Aonl y).. 468
ÿ Coolant warning lam p................ 464 0024
Electric par kingbr ak eindic ator
lam p(red) (Canada only).....................4 67
0049 Electricpa rking brak eindic ator
lam p(red) (USAonl y).......................... 467
Ù Electric po we rst eer ing warn‐
ing lam p(red) ...................................... 463
003D Electrical malfun ction warning
lam p.................................................... 465
00B9 Engine diagno siswarning lam p.. 465
00BB ESP®
OFF warning lam p.............4 71
00E5 ESP®
wa rning lam pflashes ........ 471
00E5 ESP®
wa rning lam plight sup ...... 471
00B6 Fuelreser vewarning lam p
fl ashes .................................................4 66
00B6 Fuelreser vewarning lam p
light sup .............................................. 466
0075 Restra int system warning lam p.. 462
0076 Seatbeltwarning lam pflashes ..462
0076 Seatbeltwarning lam plight s
up ........................................................ 463 506
Index

ä
Suspens ion wa rning lam p(red)
.. ...........................................................4 69
ä Suspe nsionwarning lam p(yel‐
lo w) .....................................................4 69
0024 Theelectricpar king brak e(yel‐
lo w) indi catorlamp <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 467
0077 Tire pressur emonit oring sys‐
te m wa rning lam pflashes .................... 472
0077 Tire pressur emonit oring sys‐
te m wa rning lam plight sup .................4 73
L Warning lam pfo rdis tance
wa rning func tion .................................4 69
Wa rning/indicat orlam ps.......................4 60
Ov ervie w ....... ....... ............................ ...460
PA SSENGER AIRBAG ...................... .......4 7
Wa rranty .....................................................31
Wa sher fluid
see Windsh ield wa sher fluid
Wa shing byhand (care)...... ....................331
Wa terta nk
see Air-water duct We
ather information ...............................298
We bbr ow ser
Ov ervie w .......................................... ... 308
Wheel chang e
Lo we ring theve hicle ........................ ... 384
Mounting ane wwheel ..................... ... 383
Re mo ving awhee l..... ......................... .3 82
Re mo ving/ins talling hubcaps .............3 79
Whee lro tat ion .........................................3 78
Wheel s
Ca re <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 332
Ch ang inghubcap s<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 379
Chec king.............................................3 56
Che cking thetir epr essur e(man‐
uall y)................................................ ... 360
Chec kingthetir epr essur e(tir epr es‐
sur emonit oring system) ......................3 62
Def initio ns....... ................................... .372
DO T,Tire Identif ication Number (TIN)
..... .................................................. ......3 68
Flat tire ....... ......................................... 338
Ins talling .............................................. 383
Load index...........................................3 70
Load -bearing cap acity <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 370 Maximum
tireload .............................. 369
Maximum tirepr essur e....................... 369
MOExt ended tires ................................ 338
No ise ...................................................3 56
No teson installing ...............................3 75
Ov ervie wof tirelabel ing......................3 67
Re mo ving ............................................ 382
Re placing .....................................3 75,37 9
Re star tin gth etir epr essur emonit or‐
ing system ...........................................3 62
Ro tating ........... ....................................378
Sel ectio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 375
Sno wch ains ........................................ 357
Spe edrating ........... .............................370
St or ing .................................................3 78
Te mp eratur egr ade .............................. 367
Ti re and Loadi ngInfo rm atio nplacar d
.. ...........................................................3 63
Ti re charact eristic s.............................. 370
Ti re pressur e(no tes) ........................... 357
Ti re pressur emonit oring system
(funct ion)............................................. 360
Ti re pressur eta ble .............................. 359
Ti re Qua lityGradi ng .......... ................... 367
Ti re size designation ............................3 70
TIREFIT kit....... ....................................339 Inde
x50
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