2021 MERCEDES-BENZ GLS Only Shift to

#
Pull LOWRAN GE1 rock er switc h.
Indic ator lam p2 flashes .The shiftre qu est
st ay sactiv efo ra maximu mof 30 seconds. If
all requ iremen tsforshif toper ation areno t
fulf illed within this tim e,indic ator lam p2
switc hesoffag ain and theshif toper ation
mus tbe star tedag ain. #
Switc hth etra nsmiss iontoposition 005C.
If shif toper ation issucces sful,theLOW
RANGE Onmessag eappear sin theins tru‐
ment cluster,an audible signalsoun dsand
ind icat orlam p2 and anind icat orlam pin
th eins trument clusterlig ht up continuous ly. #
Switc hth etra nsmiss iontoposition 005B.
% The vehicle stay sin LO WRANGE ifyo upar k
th eve hicle inLO WRANGE, even afte rth e
engine hasbeen restar ted.
% Youwill notbe able toswitc hon LOW
RAN GEifdr ive pr og ram C orB is
switc hedon.The vehicle switchestodrive
pr ogr am A. In
theon-r oad posit ion,shiftto HIGH RANGE
Re quiremen ts:
R theengine isrunning andyouar eno tdr ivin g
fa ster than 31 mp h(50 km/h). #
Pull LOWRAN GE1 rock er switc h.
The shiftre qu estst ay sactiv efo ra maximu m
of 30 seconds. Ifall requ iremen tsforshif t
oper ation have notbe en fulfilled within this
tim e,shif topera tionmustbe star tedag ain. #
Switc hth etra nsmiss iontoposition 005C.
If shif toper ation issucces sful,theLOW
RANGE Offmessag eappear sin theins tru‐
ment cluster,an audible signalsoun dsand
th eindicat orlam psgo out. #
Switc hth etra nsmiss iontoposition 005B. Fu
nction ofthe4MA TIC
4MA TICensures that all four wheel sar edr iven .
To get her withESP ®
and 4ETS,4MA TICimprove s
th etraction ofyour vehicle whene vera dr iven
whee lspins duetoinsuf ficie nttracti on. If
yo ufa ilto adap tyo ur drivin gst yle, 4MA TICcan
neit her reduce therisk ofan accident norover‐
ri de thelaws ofphysics. 4MA TICcannotta ke
acc oun tof road, weather and traf fic condi tions.
4MA TICisonly anaid. Youar ere sponsible espe‐
cially formaint ainingasaf edis tance from the
ve hicle infront, forve hicle speed, forbr aking in
good timeandforst ay ing inlane.
% Inwint ryroad con dition s,themaximum
ef fect of 4MA TICcan beachie vedonl yif yo u
use wint ertires (M+ Stir es), withsn ow
ch ains ifnec essar y. Re
fueli ng Re
fueli ngtheve hicl e &
WARNIN GRisk offire or explosion from
fuel
Fu els arehighly flammab le. #
Fire,open flames ,smo kingand creat ion
of spar ksmus tbe avo ided. Dr
ivin gand parking 19
1

To
wing away theve hicl ewith both axle son
th egr ound #
Obser vetheno teson theper mitt edtowing
me thods (/page349). #
Mak esur eth at thebatt eryis con nect edand
ch arge d.
A disc hargedbatt eryhas thefo llo wing effects:
R The enginecanno tbe star ted
R The electr icpar king brak ecann otbe
re leased orapplied
R The automat ictransmissio ncan notbe shif‐
te dto position 005Cor005D
% Ifth eaut omatic transmiss ioncann otbe shif‐
te dto position 005C,orthemultifunc tiondis‐
pla yin theins trument clusterdoes notsho w
an ything, theve hicle mustbe transpor ted
aw ay (/ pag e35 1). Atowing vehicle with
lif ting equipment isrequ ired forve hicle
tr anspor tatio n. *
NO
TEDama gedue totowing away at
exc essiv elyhigh speeds orove rlong dis‐
ta nces The
drivet ra in could bedamag edwhen tow‐
ing atexc essiv elyhigh speeds orover long
dis tances. #
Atowing speed of30 mph(50 km/h)
mus tno tbe exc eeded. #
Atowing distan ceof30 miles(50 km)
mus tno tbe exc eeded. &
WARNIN GRisk ofacci dent whento wing
a ve hicle whichis toohea vy
If th eve hicle being tow- star tedor towe d
aw ay ishea vier than theper missible gross
mass ofyour vehicle, thefo llo wing situat ions
can occur:
R The towing eyema ybecome detach ed.
R The vehicle/tr ailercombination may
sw erve oreve nov ertur n. #
Ifano ther vehicle istow- star tedor
to we daw ay,its weight mustno texc eed th
eper missible gross mass ofyour ow n
ve hicle. #
Information ontheper missible gross mass of
th eve hicle canbefound ontheve hicle iden‐
tif ication plate(/ page392). #
Donotopen thedr iver's door orfront
passeng erdoor astheaut omatic transmis‐
sion mayot her wise shiftto position 005Dauto‐
matic ally. #
Installth eto wing eye(/ page353). #
Fasten theto w bar .
* NO
TEDama gedue toinc orrect connec‐
tion oftheto w bar #
Onlyconnect theto w rope ortow bar to
th eto wing eyes. %
Youcan also attachth eto w bar tothetrailer
hitc h. #
Deact ivat eth eaut omatic locking mechanism
(/ page72 ). #
Donotactiv ateth eHOLD function. 350
Breakdo wnassis tance

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions &
DANG ER Risk ofexhaus tga spoisoning
Combus tionengines emitpoisonous exhaus tga ses suchas carbon monoxide.Exhaus tga ses can enterthe
ve hicle interior ifth eta ilg ateis open when theengine isrunning ,esp ecially ifth eve hicle isin mo tion. #
Alw aysswitc hof fth eengine beforeopening theta ilg ate. #
Neverdr ive wit hth eta ilg ateopen . #
Close theta ilg ate.
LOW RANGE OnlyWhen
Vehic leIsStation ary *O
neormor eshi fting con dition sha ve notbe en met. #
Stop theve hicle. #
Eng ageneutr al005C. #
Repeat thege ar chang e.
LOW RANGEShift toPosi -
tio nN Briefly *O
neormor eshi fting con dition sha ve notbe en met. #
Eng ageneu tral 005C. #
Repeat thege ar chang e.
LOW RANGENot inDrive
Pro gram "Sport" *Y
ouwill notbe able toselect theLO WRANGE off-r oad gear ifth edr ive pr ogr am C orB isswitc hedon.
The drive pr og ram ther efor eaut omaticall yswitc hestoA . #
Select theLO WRANGE off-r oad gear (/ page19 0). 420
Displaymessa gesand warning/ indic ator lam ps

Tr
ansmis sion Di
spla ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
Only Shift to'P' when Vehi-
cle isStationary *
Pa rk position 005Dcan beeng aged onlywhen theve hicle isstatio nary. #
Tostop, depr essthebr ak epedal. #
Shif tth etra nsmiss iontopar kposition 005Dwhile theve hicle isstatio nary.
App lyBra ketoShi ftfrom
'P' *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dand intoano ther tra nsmiss ionposition . #
Depr essthebr ak epedal. #
Select transmiss ionposition 005B,005Eorneutr al005C.
To Deselec tP or N,
Depress Brakeand Start
En gine *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dorneutral 005Cand intoano ther tra nsmiss ion
position . #
Depr essthebr ak epedal. #
Chang eth etra nsmiss ionposition . #
Startth eengine.
Apply Braketo Shift toDor
R *
Youha ve attem pte dto select transmission position005Bor005E. #
Depr essthebr ak epedal. #
Select transmiss ionposition 005Bor005E.
Apply Braketo Shift to'R' *
Youha ve attem pte dto select transmission position005E. #
Depr essthebr ak epedal. #
Select transmiss ionposition 005E. Displa
ymessag esand warning/ indic ator lam ps 425

Ac
tiveSt op &Go Assis tInoper ative
See Oper ator's Manual ........................ 439
Ad aptiveHig hbeam Assis tCur rently
Un available SeeOper ator' sMan ual.....4 16
Ad aptiveHig hbeam Assis tIn oper a‐
tiv e .......................................................4 16
App lyBrak eto Shif tfr om 'P' ............... 425
Apply Brak eto Shif tto 'R' ...................4 25
Apply Brak eto Shif tto Dor R............ ..425
Au xiliary Batt eryMal functi on.............. 427
Begi nning Emergency Stop .................. 438
Blind SpotAssis tCur rentl yUna vaila‐
ble See Opera tor's Manua l..... ...... .......439
Blind SpotAssis tInoper ative....... ........440
Blind SpotAssis tNo tAv ailable When
To wing aTr ailer SeeOperat or'sMan ‐
ual ................ .......................................4 40
Ca nno tSt artEn gin eSee Operat or's
Man ual................................................ 454
Cr uise Control Inoper ative.................. 446 Cr
uise Control Off...............................4 46
Decr easeSpeed .................................. 458
Dr iver's Door Open &Trans miss ion
No tin PRisk ofVehicle Rolling Away ..426
Engine CanNo wBe Started ................ 455
Fr ont Passeng erAirbag Disabled See
Oper ator's Manual ...............................4 10
Fr ont Passeng erAirbag Enabled See
Oper ator's Manual ...............................4 10
Gearbo xPr otect ion Limit 18mp h
Dis ableLO WRANGE ............................4 22
Hazard Warning Flashe rsMalfunc‐
tioning .................................................. 416
LO WRANGE Malfunct ion..................... 421
LO WRANGE Malfunct ionToPark,
App lyBrak e <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 421
LO WRANGE Max.Speed 6mp h..........4 21
LO WRANGE Max.Speed 25mph........ 422
LO WRANGE Notin Drive Pr ogr am
"Spor t"................................................ 420 LO
WRANGE OnlyWhen Vehicle Is
St atio nary............................................ 420
LO WRANGE Shiftto Position N
Br ief ly <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 420
LO WRANGE Shifting Canceled
Please React ivat e ................................ 421
LO WRANGE Stop Appl yPa rking
Brak e...................................................4 21
Mer cedes meconn ectServices Limi‐
te dSee Oper ator's Manual .................. 451
N Pe rm anen tly Ac tiveRi sk ofRo lling
Aw ay <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 426
Only Shiftto 'P' when Vehicle isSta‐
tio nar y.................................................4 25
Pla cetheKe yin theMar kedSpace
See Oper ator's Manual ........................ 413
PRE-S AFEImpulse SideInopera tive
See Oper ator's Manual ........................ 411
PRE-S AFEInoper ativeSee Oper a‐
to r's Manua l...... ................................... 411 48
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