2021 MERCEDES-BENZ GLS fuel

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
When next refuel ing, add 1.1 US qt(1l)of engine oil(/ page325) .
No teson engine oil(/ page396).
00B3
Engine OilRedu ceOil Level *D
ispla ymess ageonl yfo rcer tainengi nes:
The engineoille ve lis toohigh.
* NO
TEEngi nedama gecau sed bydriving withexc ess engine oil #
Avoid long journeys wit hex cess engineoil. #
Consul ta qu alif ied spec ialistwo rkshop immediat elyand have theengine oilleve lre duced.
00B3 En gine OilLevel LowStop
Vehicle TurnEngine Off *D
ispla ymess ageonl yfo rcer tainengi nes:
The engineoille ve lis toolow.
* NO
TEEngi nedama gecau sed bydriving withinsuf ficie ntengi neoil #
Avoid long journeys wit hins ufficie ntengi neoil. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions.Do notcontinu edr ivi ng. #
Swi tchof fth eengine. #
Add1.1 US qt(1l)of engine oil(/ page325) . #
Che cktheengine oilleve l. Disp
lay mess ages and warning/ indic ator lam ps 459

Ins
trum ent Disp lay De
pen dingon thedispla yse tting, theposition s
of theindicat orlam pson theIns trument Display
ma ydif ferfr om theex am ple shown.
Indi catorand warning lam ps:
0075 Re
stra int system (/ page462)
00E9 Seat
belt(/page462)
Ù Electric po we rst eer ing
(/ page463)
ÿ Coolanttemp eratur e(/ page46 4)
00B9 Chec
kEn gine (/page46 4)
003D Elect
rical mal functi on(/ page 464) 00B6
Re
ser vefuel withfuel filler flap loca‐
tio nind icat or(/ page46 4)
0049 US
A:elec tric par kingbr ak e(red)
(/ page46 7)
0024 Canada:
electric par kingbr ak e(red)
(/ page46 7)
0024 Ele
ctric pa rking brak e(yello w)
(/ page46 7)
0027 US
A:brak es (red) (/ page46 7)
004D Canada:
brak es (red) (/ page46 7)
L Distance warning (/ page469)
ä AIRMA TIC/E -ACTIV EBO DY CON‐
TR OL (/ page469)
0025 ABS
(/page47 0)
00E5 ESP®
(/ page47 0)
00BB ESP®
OFF (/page 470)
0077 Ti
re pressur emonit oring system
(/ page47 2)
0060 Pa
rking lam ps(/ page14 3)
0058 Lo
wbe am (/ pag e14 3)
0057 Hi
gh beam (/ page14 4) 003E003D
Tu
rn signal lights(/page14 4)
005E Re
ar foglam p(/ page14 3) Displ
aymessa gesand warning/ indic ator lam ps 46
1

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Consult aqu alif ied spec ialistwo rkshop.
or #
Exit theve hicle andkeep asaf edis tance from itunti lth eengine hascooled down. #
Chec kth ecoolant leve l(/ page326) . #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at the
cool anttemp eratur edispla yre mains belowthere dar ea.
00B9 En gine diagnosis warning
lam p The
yello wChec kEn gine warning lam pis lit while theengine isrunning .
*A malfunctio nha soccu rred intheengine, theex haus tsy stem orthefuel system.
The emission limitvalues maybe exceed edand theengine maybe inemer gency mod e.
In som est at es, legalrequ iremen tsstipulat eth at youmus timm ediat elyco nsult aqu alif ied spec ialistwo rkshop as
soon astheye llo wChec kEn gine warning lam plight sup. #
Have theve hicle checkedas soon aspossible ataqu alif ied spec ialistwo rkshop.
003D Electr icalmalfunction warn‐
ing lam p The
redelect rical fault warning lam pis lit.
*T her eis afa ult intheelectr ics. #
Notethemessag eson themultifunc tiondispla y. Dis
play messa gesand warning/ indic ator lam ps 465

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00B6 Fu elreser vewarning lam p
fl ashes The
yello wfuel reser vewarning lam plight sup while youar edr ivin g.
*Th erehas been press ureloss inthefuel system. Thefuel filler cap isno tclos edcor rectly orthefuel system isleak‐
ing. #
Close thefuel filler cap.
If th efuel filler cap hasalready been closedcor rectl y: #
Consul ta qu alif ied spec ialistwo rkshop.
00B6 Fu elreser vewarning lam p
light sup The
yello wfuel reser vewarning lam plight sup while theengine isrunning .
*T he fuel supply hasdropped intoth ere ser verang e. #
Refuel . 466
Displaymessa gesand warning/ indic ator lam ps

Ac
tiv eSe rvice System PLUS
see ASSYST PLUS
Ac tiv eSpe edLimit Assist <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 220
Disp lay <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 220
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>220
Ac tiv eSte ering Assis t.............................2 22
Ac tivati ng/d eactiv ating ........... ............224
Ac tiveEmerg encyStop Assis t.............2 26
Ac tiveLa ne Chang eAssi st<0011001100110011001100110011001100110011001100110011001100110011
00110011> 224
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>222
Sy stem limits ....................................... 222
Ac tiv eTr af fic Jam Assis t
Ac tivati ng/d eactiv ating ........... ............227
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>227
Ad aptiv ecr uise contr ol
see ActiveDis tance AssistDIS TRONI C
Ad aptiv eHighb eamAssist
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>146
Swi tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 147
Ad diti onalcus hion
Leg rest <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 100
Re ar passe nger com partment head
re stra int ...............................................1 06 Ad
diti ves.................................................. 396
En gine oil............................................ 396
Fu el ..................................................... 396
Ad diti ves(engine oil)
see Additiv es
Ad diti ves(fuel)
see Fuel
ADS PLUS dam ping system
see AIRMA TIC
Af ter-sales service center
see ASSYSTPL US
Air bag
Re duced protect ion ...............................4 4
Air cond itioning menu
Callin gup ........................................ .... 160
Air distribut ion
Se tting ............................................ .....1 59
Se tting (MBUX multimedi asy stem) ...... 161
Air freshen ersystem
see Perfume atomiz er
Air inle t
see Air-water duct Air
pressu re
see Tire pressur e
Air suspension
see AIRMA TIC
Air vents ................................................... 165
Ad jus ting (front) ............ ...................... 165
Ad jus ting (rea r) ............ ........................ 165
Glo vebox.............................................1 67
Air vents
see Airvents
Ai r-condi tioningsystem
see Climat econ trol
Air -recir cula tion mode............................ 162
Air -water duct .......................................... 328
Ke eping free ........................................3 28
Airb ag....... ..................................................42
Ac tivati on ........... ...................................37
Cushio nbag...........................................4 2
Fr ont airbag (driver ,fr ont passeng er)....4 2
Ins tallation locations .............................4 2
Knee airbag........................................... 42
Ov ervie w ..... .......................................... 42
PA SSENGER AIRBAGind icat orlam p.....4 7 Inde
x47
5

00BD
CheckCoolan tLe velSee Oper‐
at or's Manual ...................................... 423
00B3 CheckEn gine OilLevel(A dd 1
qu art) .................................................. 458
: CheckLef tLo wBeam (exa m‐
ple) ....................................................... 414
0077 CheckTire s ................................ 456
00B2 CheckWa sher Fluid ...................4 22
00C4 Compressor IsCoo ling ...............437
ÿ Coolan tTo oHo tSt op Vehicle
Tu rn Engi neOff............ ........................ 423
00CE Current lyUn available Camera
Vi ew Restrict ed <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> ......443
ç Currentl yUna vailable Radar
Sen sorsDir ty ...................................... 442
0025 Currentl yUna vailable See
Opera tor's Manua l...... .........................447
00E5 Currentl yUna vailable See
Opera tor's Manua l...... ........................ 448
Á Don't Forget Your Key.................4 13 00C4
Drive More Slowly ............ .......... 437
00B3 EngineOilLe velCann otBe
Mea sured <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>...460
00B3 Engine OilLevelLo wStop Vehi‐
cle Turn Engi neOff............ ..................459
00B3 EngineOilPr ess ureSt op
Switc hOf fEngin e................................ 460
00B3 EngineOil Reduce OilLevel........ 459
0075 Front LeftMalfunction Service
Re quired (exa mp le) .............................4 09
00B6 FuelLevelLo w ............................ 424
00B6 GasCap Loose ...........................4 24
0025 Inoper ativeSee Oper ator's
Manua l..... ........................................... 448
00E5 Inoper ativeSee Oper ator's
Manua l..... ........................................... 449
007A Inoper ativeSee Oper ator's
Manua l..... ........................................... 450
0053 Inoper ative..... ............................4 51
î Inoper ative..... ............................4 44 :
Intell. Light System Inoperativ e.. 415
Á KeyNo tDe tected (red displ ay
messa ge).............................................4 13
Á KeyNo tDe tected (whit edis‐
pl ay messa ge)...................................... 412
0075 LeftSide Curtain Air bag Mal‐
func tion Service Required (exa mp le) ...4 09
00C5 Lowe ring <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ............435
ä Malfunctio nDr ive at Ma x.50
mp h............................................. 434, 435
: Malfunction SeeOper ator ’s
Manual .................................................4 14
î Max.Speed 25mph...................4 44
î Notin Cur r.Dr ive Pr og ............. ..444
Á ObtainaNe wKe y.......................4 12
ç Off..............................................4 45
00D9 Off....... .......................................443
0049 Parking Brak eSee Opera tor's
Manua l...... .......................................... 428
0077 PleaseCor rect Tire Pressur e...... 457 482
Index

ESP
®
(Electr onicStabil ityProg ram) ...... 203
Ac tivati ng/d eactiv ating ........... ........... .205
Fu nctio n/no tes ................................... 203
Ext endable running boards....................... 74
Ext enda blestep
see Running boards
Ex terior light ing
see Light s
Ext erior light ing(Car e)...........................3 32
Ext erior mir rors <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 155, 156
Anti-glar emod e(a ut oma tic) ................ 156
Au tomatic mirrorfo lding function ........ 157
Fo lding in/out .....................................1 55
Oper ating thememor yfunc tion ........... 115
Pa rking posit ion...................................1 56
Se tting ................................................. 155 F
Fa tig ue detection
see ATTENTION ASSIST
Fi rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> ....337
Fl aco n
Inse rting/ remo ving ............................. 163 Flat
tire .....................................................3 38
Cha nging awhe el....... ..................... .... 379
MOExt ended tires ................................ 338
No tes .................................................. 338
TIREFIT kit...........................................3 39
Flat towing
see Tow- bar system
Floor mats................................................ 141
Fo ilco vering
Ra dar and ultrasonic sensors.............. 201
Fo lding table ............................................ 122
Fr ag rance
see Perfume atomiz er
Fr ee driving mode
St artin g...............................................2 43
Fr ee sof tware ............................................ 34
Fr eq uencies
Tw o-w ayradio ................................ ...... 391
Fr ont airbag (driver ,fr ont passeng er).....4 2
Fr ont passeng erseat ................................ 96
Ad jus ting from thedr iver's seat ...... ...... 96 Ad
jus ting from there ar passe nger
com partment .........................................9 7
Fr ont passeng erseat
see Seat
Fu el ...........................................................3 96
Ad ditiv es.............................................3 96
E1 0 ....... ............................................... 395
Fu elreser ve <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 396
Ga sol ine <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 395
Qua lity (gas oline )<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 395
Re fuel ing .............................................. 191
Sul fur cont ent <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 395
Ta nk cont ent <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ...............396
Fu nction seat
see Door controlpanel
Fu nction seat(rear passeng ercom‐
par tment)
see Seat (rear passeng ercom partmen t)
Fu ses ........................................................ 353
Bef orere placing afuse ........................ 353
Dashboar dfuse box............................ 355
Fu se assignment diagram...................3 53
Fu se boxin thecar gocom partmen t....3 55
Fu se boxin theengine compartmen t.. 354 488
Index

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