2021 MERCEDES-BENZ GLS SUV tow

Symbols
........................................................ 5 At
agl ance ....................................................6
Coc kpit ....... ..................... ..................... ..........6
Indica torand warning lam ps.........................1 0
Ov erhead controlpanel ................................ 12
Doo rcontr olpa nel and seatad jus tment .......14
Con trol setting sin there ar passe nger
com partment ................................................ 16
Emerg enciesand brea kdo wns ............ .......... 18 Digita
lOp erator' sMa nua l......................... 20
Callin gup theDigit alOper ator's Manual ...... 20 Gener
alno tes... .......................................... 22
Pr otect ing theen vironmen t... ....................... 22
Mer cedes- BenzGenuineP arts ......... .............. 23
Oper ator's Manual ........................... .............2 3
Ser vice andvehicle operation ......... .............. 24
Oper ating safety...........................................2 5
Decl arati on ofconf ormity forwireless
ve hicle component s... ................................... 27
Dia gno stics con nection ................................ 27 Qua
lified speci alistwo rkshop ....................... 28
Cor rect useof theve hicle ............................2 8
Spor tUtil ityVehicle ........................ .............. 29
No tesfo rper sons withelectr onicmedi‐
cal aids..... ........................................ ............ 29
Pr oble mswithyo ur vehicle ............... ............ 29
Re por tingsaf etydef ects ...............................3 0
Limit edWarrant y.......................................... 31
QR code forre scue card... ............... .............3 1
Dat ast or ag e... ..............................................3 1
Cop yright ...................................................... 34 Occup
antsafety.... .....................................36
Re stra int system .............................. .............3 6
Sea tbel ts<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 38
Airb ags<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 42
PR E-S AFE ®
sy stem ....................................... 49
Au tomatic measu resaf te ran accide nt..... .... 51
Saf ely transp orting childr enintheve hi‐
cle ...... ........................................................... 51
No teson pets intheve hicle ............ .............6 6 Opening
andclosing .................................. 67
Smar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 67Doo
rs<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 70
Ru nning boards <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>74
Car gocomp artm ent .....................................7 5
Sid ewi ndo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 81
Sli ding sunroof <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 84
Ro ller sun blinds ...........................................8 9
Anti-t heftpr otect ion .....................................9 0 Seats
andstowing ...................................... 94
No teson thecor rect driver's seatpos i‐
tion <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011>.......94
Sea ts<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 94
St eer ing wheel ............................................ 112
Eas yentr yand exitfeatur e.......................... 114
Oper ating thememor yfunc tion .................. 115
Memor yfunct ioninthere ar passe nger
com partment .............................................. 116
St ow agear eas .............................................1 19
Cup holder.................................................. 133
Soc kets ........... ............................................ 135
Re frig er ator box...... .................................... 137
Wi reless chargin gof themobile phone
and connect ionwithth eex terior ant enna ..139
Ins talling/ remo ving thefloor mats .............. 141 2
Contents

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
Control pan elforre ar com partment clim ate
con trol →
160
2 Stor ag ecom partmen tin thecent ercon sole
11 5V soc ket →
136
3 Adjus tsthefront passeng erseat electr ically →
97
4 Switches there ar seat ventil ation on/o ff →
111
5 Switches there ar seat heatingon/of f →
109
6 Adjus tsthere ar seat selec tricall y →
98
Mer cedes-Ma ybac hve hicles: adjustsare cli n‐
ing rear seat electricall y →
98 7
Mercedes-Ma ybac hve hicles: operates the
memor yfunction →
116
8 Mercedes-Ma ybachve hicles: sets thefully
re cli ned position →
99
9 Mercedes-M aybac hve hicles: access tothe
re frig er ator box →
137
A Stow agecom partment inthere ar armr est
MBU Xre ar table tbr ac ket At
aglanc e– Con trol setting sin there ar passe nger com partment 17

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

Callin
gup theDigital Operator' sMan ual
Multi media system:
4 © 5
Info 5
Operator 'sManual
5 Õ The
Digit alOper ator's Manual describesthe
functions andoper ation oftheve hicle andthe
multime diasystem. #
Select oneofthefo llo wing menuitems inthe
Dig ital Op erator' sMa nua l:
R Sea rch: searchfo rke yw ords inorder tofind
qu ick answ ersto question sabout theoper a‐
tion oftheve hicle. R
Quick start:find thefirs tst eps towa rdsse t‐
ting upyour vehicle.
R Tips: find informa tionth at prepar esyoufo r
cer tain eve ryda ysituation swit hyo ur vehicle.
R Animation s:wa tchani ma tions oftheve hicle
funct ions.
R Messages: recei veaddit ionalinf ormat ion
about themessag esintheins trument dis‐
pla y.
R Bookma rks:ga in acc ess toyour per son ally
sa ve dbookm arks .
R Langua ge:select thelanguag efo rth eDigit al
Oper ator's Manual. 1
Back
2 Adds bookm arks
3 Pictur e
4 Cont ents section
5 Direction sof mo vement ofcont ents section
6 Menu
Some sections intheDigit alOper ator's Manual,
e.g. warning notes, can beexpanded andcol‐
lapsed.
Ad diti onalme thods ofcal ling up the Digital
Ope rato r's Man ual:
Di rect access :open there qu ired con tent inthe
Dig ital Op erator' sMa nua lby pressing andhold‐ 20
DigitalOper ator's Manual

#
Onlyconnec tth eve hicle diagnos tics
conn ection todevices whichha ve been
te sted withre ga rd totheir suit ability
and arecon sider edsafe. &
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal trav el or bloc kadepr essed pedal.
This jeopar dizestheoper ating androad
saf etyof theve hicle. #
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. #
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. #
Donotuse loose floor mats anddonot
place floor mats ontopof one another. *
NO
TEBatt erydi sc ha rging from using
de vice sconne cted tothediagnos tics
con nect ion Using
devices atthediagnos ticsconnect ion
dr ains thebatt ery. #
Chec kth ech arge leve lof thebatt ery. #
Ifth ech arge leve lis low, charge the
batt ery, e.g. bydriving acon sider able
dis tance. Co
nnecti ngequip ment tothediagnos ticscon‐
nect ioncan lead toemissions monitoring infor‐
mation beingrese t,forex am ple. This maylead
to theve hicle failing tomee tth ere qu iremen tsof
th ene xt emissions inspectionduring themain
inspect ion. Qualif
iedspecialis two rkshop
An author ized Mercedes-B enzCent erisaqu ali‐
fi ed specialis two rkshop. Ithas theneces sary
special skills,tools and qualif icat ionsto cor‐
re ctly carryout thewo rkrequ ired on your vehi‐ cle.
This particular lyapplies tosaf ety-re leva nt
wo rks.
Fo rth efo llo wing, alwaysha ve your vehicle
ch eckedat an aut hor ized Mercedes- BenzCen‐
te r:
R safety-re leva nt wo rks
R service andmaint enance work
R repair work
R modif ications aswellas installation sand
con versions
R workon electr oniccomponent s
R vehicl eswith 48Von-b oardele ctrical
sy stem (EQ boos tte ch nology): workon
high voltag ecom pone ntsof the48 Von-
boar delectr icalsystem
Mer cedes‑ Benzrecomme ndsaMercedes‑Be nz
ser vice center. Co
rre ctuse oftheve hicl e
If yo ure mo veanywa rning sticke rs,yo uor other s
could failto recogni zecer tain dang ers. Lea ve
wa rning sticke rs inposit ion. 28
General notes

The
front passeng erairbag canonlybe deplo yed
in an acc ident ifth ePA SSENGER AIRBAGOF F
ind icat orlam pis off.Ifth efront passeng erseat
is occupied, makesur e,bo th bef oreand during
th ejour ney,that thest atus ofthefront
passeng erairbag iscor rect (/ page 47). &
WARNIN GRisk ofburnsfrom hotair bag
com ponents
The airbag partsareho taf te ran air bag has
been deployed. #
Donotto uc hth eair bag parts. #
Have adeplo yedair bag replaced ata
qu alif ied spec ialistwo rkshop assoon
as possible . Mer
cedes-Benz recomme ndsthat youha ve the
ve hicle towe dto aqu alif ied spec ialistwo rkshop
af te ran accide nt.Take this int oacc ount ,par tic‐
ular lyifan Em erge ncy Tensi oni ng Device istrig ‐
ge redor an airbag deployed. If
th eEmer gency Tensi oni ng Device sar etrig ‐
ge redor an airbag isdeplo yed, youwill hear a
ban g,and asmal lamoun tof powder mayalso be
re leased:
R The bang willnotge ner ally affect your hear ‐
ing .
R Ingener al,th epo wder released isno thaz‐
ar dous tohealt hbut maycause short-term
br eat hing difficul ties toper sons suffering
fr om asthma orother pulmonar yconditions .
Pr ov ided itis saf eto do so, leavetheve hicle
immediat elyoropen thewindo win order to
pr eve ntbrea thing difficul ties .
Airb agsand pyrotech nic Emerg encyTensi oni ng
De vice scont ain pe rchlor atemat erial, whic hma y
re qu ire spec ialhandlin gor environm entalpro‐
te ction measures. Na tional guideline sre ga rding
wa ste disposal mustbe obser ved. InCalif ornia,
see https:/ /dtsc.ca.go v/.Using thesear ch
function, youwill find informa tionon perchlo‐
ra te,fo rex am ple. Seat
belts Pr
otection prov ided bytheseat belt Alw
aysfa sten your seat beltcorrect lybef ore
st ar tin gajo ur ne y.Asea tbe ltcan only prov ide
th ebes tle ve lof protect ion ifit is wo rncor rectl y. &
WARNIN GRisk ofinju ryor deat hdue to
inc orrectl yfa stened seatbelt
If th eseat beltisno two rncor rectly ,it can‐
no tper form itsintended protect ive func tion.
In addition, anincor rectly fastened seatbelt
can also cause injuries,forex am ple, inthe
ev ent ofan acciden tor when braking or
ch ang ingdirect ion sudden ly. #
Alw aysensur eth at all vehicle occu‐
pants have their seat belts fastened
cor rectl yand aresitti ngprope rly. Alw
aysobser vetheins truction sabout thecor‐
re ct driver's seatpos ition and adjus ting theseat
(/ page94 ). 38
Occupant safety

#
Alw ayssecur eper sons under 5ft
(1 .50 m)tallin asuit able restra int sys‐
te m. &
WARNIN GDang erofinju ryor deat hdue
to bloc kedseat beltanchorage
The restra int effect of theseat beltis
im pair edifobjec tsbetween thefront seat
and thedoor arebloc king themo vable seat
belt anchorageon thefront seat. #
Beforest ar tin gajo ur ne y,mak esur e
th at ther ear eno objec tsbetween the
fr ont seatand thedoor . &
WARNIN GRisk ofinju ryor deat hdue to
damag edormodif iedseat belts
Seat belts cannotprov ide protect ion inthe
fo llo wing situat ions:
R The seat beltisdamag ed,has been modi‐
fi ed, isex treme lydirty, bleac hedordyed R
The seat beltbuckleisdamag edor
ex treme lydir ty
R Modif ication sha ve been made tothe
Emerg encyTensi oni ng Device ,sea tbe lt
anc horageor sea tbe ltre tract or
Sea tbe lts ma ysu stain non-visi ble damag ein
an acc iden t,e.g .due toglass splin ters.
Modif iedordamag edseat belts could tear or
fa ilin theev ent ofan acciden t,forex am ple.
Modif iedEmerge ncy Tensi oni ng Device sma y
be deploy ed unint entionally ornotfunc tion
as intended. #
Nevermodify theseat belts, Emergency
Te nsi oni ng Device s,sea tbe ltanc ho‐
ra ge sor seat beltretract ors. #
Makesur eth at theseat belts areno t
damag ed,areno two rnand arecle an. #
Alw aysha ve theseat belts checked
immed iatelyaf te ran accide ntata
qu alif ied spec ialistwo rkshop. Onl
yuse seat belts whichha ve been approved
fo ryo ur vehicle byMer cedes-Ben z. &
WARNIN GRisk ofinju ryor deat hfrom
deplo yedpy rotech nic Emerg encyTen‐
si oni ng Device s
Py rotech nic Emerg encyTensi oni ng Device s
th at have been deployedar eno long eroper a‐
tion aland areunable toper form their inten‐
ded protect ive func tion. #
Ther efor e, have deplo yedpy rotech nic
Emerg encyTensi oni ng Device simm edi‐
at ely replaced ataqu alif ied spec ialist
wo rkshop. Mer
cedes-Benz recomme ndsthat youha ve the
ve hicle towe dto aqu alif ied spec ialistwo rkshop
af te ran accide nt.
* NO
TEDama gecau sed bytrap ping the
seat belt If
an unused seatbeltisno tfully retract ed,it
ma ybe come trap pe din thedoor orinthe
seat mechanism. #
Alw aysensur eth at an unus edseat belt
is full yre tract ed. 40
Occupant safety