heating MERCEDES-BENZ GLS 2021 Owner's Manual

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Mak eaMer cedes mecall viatheov erhead control panel (/page304).
0072 Vehicle ReadytoDrive
Switc hthe Ignit ionOff
Befor eEx iting *Y
ouarelea ving theve hicle when itis in are ady -to- dr ive st at e. #
When youlea vetheve hicle, switchof fth eignition ,secur eth eve hicle agains tro lling away and taketh eSmar t‐
Ke ywit hyo u. #
Ifyo udo notlea vetheve hicle, switchof fth eelectr icalconsumer s,e.g. theseat heating. Other wise, the12 V
batt eryma ydisc hargeand itwill then be possible tostar tth eve hicle onlywit hth eaid ofasecon dbatt ery
(s ta rting assis tance) .
Ru nning BoardsNot Retrac -
ted PayAttentio nto
Excess Width ofVeh icle *M
ercedes- Maybac hve hicles: theru nning boards areno tre tract ed.
R The running boards canberetract edvia themultimedia system onlywhen theve hicle isstatio nary
(/ page75 ).
R The running boards andtheside skirtmus tbe free ofdir t,ice and snow.Other wise, they areunabl eto retract. #
Clea nth eru nning boards (/page 332). #
Repeat there tracti onoftheru nning boards (/page 74).
If th eru nning boards canno tbe retract edagain, cons ulta qu alif ied spec ialistwo rkshop. #
Ifth eru nning boards areno tre tract ed,ch eckth eex cess widthof theve hicle. Displa
ymessag esand warning/ indic ator lam ps 41
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Consult aqu alif ied spec ialistwo rkshop.
Stop Vehicle LeaveEngine
Running WaitTransmission
Cooli ng *T
hetransmission isove rheating. Pullingaway ma ybe temp orarily im pair edornotpossible. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions.Do notcontinu edr ivi ng. #
Lea vetheengine running . #
Waitunt ilth edispla ymessag edisappear sbef orepulling away.
Auxi liar yBatte ryMa lfunc-
tio n *T
heauxilia rybatt eryfo rth etra nsmiss ionisno long erbeing charge d. #
Consult aqu alif ied spec ialistwo rkshop. #
Untilthen, alwaysselect parkposition 005Dmanually beforeyo uswit choffth eengine. #
Beforelea ving theve hicle, apply theelectr icpar king brak e. Displa
ymessag esand warning/ indic ator lam ps 42
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0077 Please Correct TirePres-
sure *T
hetirepr essur eis toolow in at leas tone ofthetir es, orthedif fere nce intirepr ess urebe twee nth eindividual
wheels istoogr eat. #
Chec kth etir epr essur eand add air,if neces sary. #
When thetir epr essur eis cor rect, restar tth etir epr essur emonit oring system (/ page362).
0077
Warning TireMalfunct ion *T
hetirepr essur ein one ormor etir es has dropped suddenly .The wheel position willbedispla yed. &
WARNIN GRisk ofan acci dent from drivi ng with aflat tire
R The tires can overheat and cause afire .
R The driving charact eristic sas wellas thesteer ing and braking maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Donotdr ive on withaflat tire. #
Obse rveth eno teson flat tires. No
teson flat tires (/ page33 8). #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Chec kth etir es.
Tires Overheat ed *A
tle as tone tireisov erheating. Theaffect ed tires aredispl ayed inred. At temp eratur esclose tothelimit value, the
tir es aredisp laye din yello w. Dis
play messa gesand warning/ indic ator lam ps 45
7

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions &
WARNIN GRisk ofan acci dent from drivi ng with ove rheat edtires
Ov erheat edtires can burst. #
Reduce speed sothat thetir es cool down. Dec
rease Speed *A
tle as tone tireisov erheating. Theaffect ed tires aredispl ayed inred. At temp eratur esclose tothelimit value, the
tir es aredisp laye din yello w. &
WARNIN GRisk ofan acci dent from drivi ng with ove rheat edtires
Ov erheat edtires can burst. #
Reduce speed sothat thetir es cool down. Engine
oil Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
00B3 Check Engine OilLevel
(Add 1quart) *D
ispla ymess ageonl yfo rcer tainengi nes:
The engineoille ve lhas dropped totheminimum leve l.
* NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil #
Avoid long journeys wit hins ufficie ntengi neoil. 458
Display mess ages and warning/ indic ator lam ps

Re
ar air vents <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .............165
Re ar oper atingunit .............................. 160
Re frig er ant .................. ........................ 400
Re frig er ant filling capac ity.............. .....4 01
Re mo ving condensatio nfrom the
windo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 162
Re sidua lheat ......... .............................. 162
Re sidua lheat (rear oper ating unit) ...... 163
Se tting (MBU Xmul time diasy stem) ..... 160
Se tting theair distribution ...................1 59
Se tting theair flow <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 159
Se tting thefragr ance system ............... 163
Se tting thete mp eratur e......................1 59
Switc hingthere ar wind owheat er
on/of f.................................................1 59
Ve ntil ating theve hicle (convenie nce
op eni ng) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 83
Wi ndsh ield hea ter ...... ..........................164
Coat hook .................................................1 32
Co ckpit <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>6
Ov ervie w <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> ..............6
Co ffee cup symbol
see ATTENTION ASSIST Collapsible
sparewheel .......................... 387
Inf lating .......................................... ..... 388
No tes ................................................... 387
Re mo ving ............................................ 388
Col lision detection (parked vehicl e)...... 200
Comb inationswi tch ...... ..........................144
Com puter
see On-boar dcom puter
Consum ption indicat or
Calling up........................................ .... 185
Con venience closing featur e....... ............. 83
Co nvenience opening................................ 83
Coolant (engine)
Capacit y.......................................... .... 399
Chec kleve l.......................................... 326
No tes .................................................. 398
Cool ing
see Clima tecontr ol
Co pyrights
Licen se.................................................. 34
Tr ademar ks<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 35
Co rnering light .........................................1 46 Cr
oss Traf fic Aler t...................................2 60
Cr oss wind Ass ist
Fu nctio n/no tes ................................... 206
Cr uise contr ol.......................................... 212
Butt ons <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> .......213
Callin gup aspee d...............................2 13
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011>212
Re quiremen ts:.....................................2 13
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 213
Se tting aspe ed <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 213
St or ing aspeed .................................... 213
Swi tching off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 213
Swi tching on<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 213
Sy stem limit ations ...............................2 12
Cup holder
Swit ching thecooling/ heatingfunc‐
tion on/off.......................................... 133
Cush ionba g................................................ 42
Cus tomer Assist ance Center (CAC ).........2 9
Cus tomer Relat ions Depar tment .............2 9 480
Index

Fu
se boxin thefront -passen gerfo ot ‐
we ll...... ................................................ 355
No tes .................................................. 353
Fu ses
see Fuses G
Gar agedoor opener
Clea ring thememor y........................... 197
Opening orclosing thedoor ................1 97
Pr ogr amming buttons .......................... 195
Re sol ving problems ............................. 197
Sync hronizi ngthero lling code .............1 97
Gasoli ne............... ....................................3 95
Gasol inestation price s....... .................... 298
Gear shiftre comm endation .................... 188
Genuin epar ts............................................ 23
Glide mode ...............................................189
Glo vebox
Air vent <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 167 H
Handbr ake
see Electr icpar king brak e
Handlin gch aract eristics (unus ual)....... 356
HAND S-FREEAC CESS ................................ 78
Handse t
St ow agecom partment .................... .... 123
Hazar dwa rning light s.............................1 45
Hazar doussubstances
Inf ormatio n....... ................................... ..25
Head restra int
At tach ing/ remo ving thesupplemen‐
ta ry cus hion<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> ............106
EAS YAD JUST luxur yhead restra int
(fr ont ).............................................. .... 104
Fr ont (adjus tingmechanicall y).............1 03
Fr ont (luxur yhead restra int ).......... ...... 104
Re ar (installin g/remo ving) ...................1 06
Re ar passe nger com partment
(adj ustin g) ...........................................1 05
Re ar passe nger com partment (luxur y
head restra int ).....................................1 06 Head-up
Displa y....... ...............................279
Ad jus ting disp lay el eme nts(on-bo ard
com puter) ..... ....................................... 279
Ad jus ting thebr ightn ess(on-boar d
com puter) ............................................ 279
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 278
Menu (on-boar dcom puter) .................. 279
Oper ating thememor yfunc tion ........... 115
Se tting theposition (on-boar dcom‐
put er) .................................................. 279
Swi tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 280
Headl amps
see Automatic driving lights
Headlin er(car e)....................................... 334
Heating see Climat econtr ol
High beam
Ac tivati ng/d eactiv ating ........... ............144
HIGH RANGE
Shif ting ................................................1 90
High-b eamflasher ................................... 144
High-be amheadlam ps
Ad aptiveHig hbeam Assis t...................1 46 Inde
x489

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

Tr
act ion grade .....................................3 67
Tr ead weargrade ............................ .....3 67
Un usual handlingch aract eristic s........ 356
Wi -Fi
Se tting ................ ................................ .291
Wi ndo wcur tain airba g............................. 42
Wi ndo ws
see Side windo ws
Wi ndo ws(Car e)........ ...............................3 32
Wi ndshield ................................ 151, 153, 159
Defr osting ............ ................................159
Infr ared reflect ive ................................ 158
Ra dio wav es........................................1 58
Re placing thewiper blades .................. 151
Re placing wiperblades (MAGIC
VISI ONCONTR OL) ............................... 153
Wi ndshield
see Windsh ield
Wi ndshield heater................................... 164
Wi ndshield heating
see Windsh ield hea ter
Wi ndshield washer fluid .........................3 99
No tes .................. ................................ 399 Wi
ndshield washer system
To pping up...........................................3 27
Wi ndshield wipers
Ac tivati ng/d eactiv ating ........... ............150
Re placing thewiper blades .................. 151
Re placing wiperblades (MAGIC
VISI ONCONTR OL) ............................ ... 153
Wi nter oper ation
Sno wch ains ........................................ 357
Wi per blades
Ca re <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 332
Re placing .............................................1 51
Re placing (MAGIC VISIONCONTR OL)
.... .... ................................................ .....1 53
Wi reless chargin g
Fu nctio n/no tes ................................... 139
Mobile phone ................................. ...... 140
Mobile phone(rear passeng ercom‐
par tment )............................................ 140
Wi reless vehicl eco mp onent s
Dec laration ofcon form ity .............. ........ 27
Wo rkout prog ram
Ov ervie w .......................................... ... 108 Wo
rkshop
see Qualif iedspecialis two rkshop 508
Index