warning MERCEDES-BENZ GLS 2021 Workshop Manual

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Á Key NotDetected (red dis‐
pla ymessag e) *T
heSmar tKey canno tbe detected and mayno long erbe intheve hicle.
The Smar tKey isno long erintheve hicle andyouswit choffth eengine:
R Youcan nolongerst ar tth eengine.
R Youcan notcen trally lockth eve hicle. #
Ensur eth at theSmar tKey isin theve hicle.
If th eSmar tKey detection functi onhasa mal functi ondueto ast ro ng radio signal source: #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions. #
PlacetheSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e16 9).
Pl ac ethe Key inthe
Ma rked SpaceSee Opera -
tor' sMa nua l *S
mar tKey detection ismal functi oning. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Place theSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e16 9).
Á Don't ForgetYour Key *A
warning tone willal so sou nd. Thismes sage reminds youto take your Sm artK ey wit hyo uwhen youlea vethe
ve hicle. Displa
ymessag esand warning/ indic ator lam ps 41
3

Light
s Displa
ymess ages
Possible causes/conseq uencesand0050 0050
Solutions
: Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Drive on car efull y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
% LED lightsour ces: thedispla ymessag efo rth ecor responding lightappea rsonl ywhen allthelight- emitt ing
diodes inthelight arefa ulty .
: Malf unctionSee Oper a-
to r’s Man ual *T
heexterior lighting ismalfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
: Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqu alif ied spec ialistwo rkshop. 41
4
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
: Act ive Headlamps Inopera-
tive *T
heactiv eheadla mpsar emalfunctioning. #
Consult aqu alif ied spec ialistwo rkshop.
: Switch OnHeadla mps *Y
ouaredr iving without low- beam headlam ps. #
Turn thelight switc hto the0058 or0058 position .
:
Switc hOff Lights *Y
ouarelea ving theve hicle andthelights arest ill switc hedon. #
Turn thelight switc hto the0058 position .
: Int ell. Light System Inoper-
ative *T
heIntellig entLight System ismalfunct ioning.Thelighting system continues tofunction proper lywit hout thefunc ‐
tion sof theInt ellig entLight System. #
Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 41
5

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Adaptive Highbeam Assist
Currently Unavailable See
Operator' sManual *A
dap tiveHighbeam Assistis temp orarily una vailable.
The system limits have been reac hed (/page14 6). #
Drive on.
Once thecause ofthepr oblem isno long erpresent ,th esy stem will beavailable again. TheAdap tiveHig hbeam
As sist Now Available displaymes sagewill appear .
Adap tiveHig hbeam Assist
In oper ative *A
daptiveHighbeam Assistis malfunc tioning. #
Consult aqu alif ied spec ialistwo rkshop.
Hazard Warning Flashers
Malfunctioning *T
hehazar dwa rning lam pswitc his malfun ctionin g. #
Consult aqu alif ied spec ialistwo rkshop. Ve
hicl e Dis
playmessag es
Possible causes/conseq uencesand0050 0050
Solutions
Update Successfully Com-
pleted *I
nstallation ofthesof twareupdat ehas been success fullycompleted(/ page290 ).
Update FailedSoftware
Remains Unchanged *A
ner ro roccur reddur ing installation ofthesof twareupdat e(/ page290).
The prev ious softwareve rsion remains inpla ce.
Upda teFail ed *A
ner ro roccur reddur ing installation ofthesof twareupdat e(/ page290). 41
6
Display messa gesand warning/ indic ator lam ps

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
y Running BoardNotExten -
ded *M
ercedes- Maybac hve hicles: theru nning boards areno tex tende d.
R The running boards extend only when theve hicle isstatio nary.
R The running boards andtheside skirtmus tbe free ofdir t,ice and snow.Other wise, they areunabl eto extend. #
Clea nth eru nning boards (/page 332). #
Repeat theex tensi on oftheru nning boards (/page 74).
If th eru nning boards failto extend again, consu ltaqu alif ied spec ialistwo rkshop. #
Ifth eru nning boards areno tex tende d,be particular lycar efu lwhe nget ting inor out.
Ù
Stee ringMa lfunctio n
Incre ased Physica lEffo rt
See Opera tor' sMa nua l *T
hepowe rst eer ing assis tance isma lfunctio ning. &
WARNIN GRisk ofan acci dent dueto altered steer ing charact eristic s
If th epo we rassi stanc eof thesteer ing fails par tiall yor com pletely,yo uwill need touse morefo rc eto steer . #
Ifsaf esteer ing ispossible, drive on car efully . #
Visit orconsult aqu alif ied spec ialistwo rkshop immediat ely. Ù
Steer ingMalfunction Stop
Imme diate lySee Opera-
tor's Manua l *T
hesteer ing ismalfunct ioning.Steer ing capability issignif icantlyim pair ed. &
WARNIN GRisk ofacci dent ifsteer ing capability isim pair ed
If th esteer ing does notfunc tion asintended, theve hicle's operating safetyis jeopar dized. 41
8
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.
Do notcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. 0051
*A
tle as tone door isop en. #
Close alldo ors.
0066 *T
hehood isopen. &
WARNIN GRisk ofacci dent dueto driving withth ehood unlocked
The hood mayopen andblockyo ur vie w. #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood isloc ked. #
Stop theve hicle immediat ely,pa ying attention toroad and traf fic condi tions. #
Close thehood.
0065 *T
hetailg ateis open . Disp
lay mess ages and warning/ indic ator lam ps 41
9

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

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
LOW RANGE Malfunct ion
To Park, Apply Brake *T
hetransf ercase ismalfunctionin g. #
Donotshif tth etra nsf ercase. #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away. #
Con sult aqu alif ied spec ialistwo rkshop.
LOW RANGE Shifting Can-
celed Please Reactivate *T
hetransf ercase didnotper form thege ar chang e. #
Repeat thege ar chang e. #
Ensur eall shif tingcon dition sar eme t(/ page19 0).
LO WRA NG EMa lfunctio n *T
hetransf ercase ismalfunctionin g. #
Donotshif tth etra nsf ercase! #
Use theelectr icpar king brak eto secur eth eve hicle agains tro lling away. #
Con sult aqu alif ied spec ialistwo rkshop.
LOW RANGE StopApply
Parking Brake *T
hetransf ercase ismalfunctionin g. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions. #
Apply theelectr icpar king brak e. #
Wher eneces sary,also secureth eve hicle agains tro lling away. #
Eng agepa rk position 005D.
LOW RANGE Max.Speed 6
mph *T
hemaximum speedof6mp h(1 0 km/h) forth ege ar chang ehas been exceed ed. Disp
lay mess ages and warning/ indic ator lam ps 42
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Drive mor eslo wly. #
Repeat thege ar chang e.
LOW RANGEMax .Spe ed
25 mph *T
hemaximum speedof25 mph(4 0km/h) forth ege ar chang ehas been exceed ed. #
Drive mor eslo wly . #
Repeat thege ar chang e.
Gearbo xPro tection Limit
18 mph Disable LOW
RAN GE *T
heoiltemp eratur ein thetra nsf ercase istoohigh. #
Intheon- road posit ion,shif tto HIGH RANG E.
00B2
Che ckWa sher Fluid *T
hewasher fluid leve lin thewa sher fluid reser voirhas dropped belowtheminimum. #
Addwa sher fluid (/ page32 7). 422
Displaymes sagesand warning/ indic ator lam ps