belt MERCEDES-BENZ GLS 2021 Service Manual

and
depr essitbef oreth eve hicle begins toroll
aw ay. &
WARNIN GRisk ofacci dent andinjury
due totheve hicle rolling away
Af tera shor ttime, HillStartAs sis tno longer
holds theve hicle. #
Swif tly mo veyour foot from thebr ak e
pedal totheaccelera torpeda l.Do not
lea vetheve hicle when itis being held
by HillSt artAs sis t. HOLD
functi on HOLD
functi on
The HOL Dfun ction holds theve hicle atast and‐
st ill wit hout requ iring youto depr essthebr ak e
pedal, e.g.while waitin gin traf fic.
The HOLD functionisonly anaid. The responsi‐
bility forth eve hicle safely standi ngstill remains
wit hth edr iver .
Sy stem limit s
The HOL Dfun ction isonl yint end edtoprov ide
assis tance when drivi ng and isno ta su fficien t mean
sof saf eguar dingtheve hicle agains tro lling
aw ay when statio nary.
R The incline mustno tbe great erthan 30%.
Ac tiv atin g/deac tivatin gthe HOL Dfunc tion &
WARNIN GRisk ofan acci dent dueto the
HOLD functio nbei ng activ ated whe nyo u
lea vetheve hicle
If th eve hicle isonl ybr ak ed withth eHOLD
func tion itcould, inthefo llo wing situat ions,
ro llaw ay:
R Ifth er eis amalfunct ioninthesy stem or
in thepo we rsupp ly.
R Ifth eHOLD function isdeactiv ated by
depr essing theaccelera torpeda lor brak e
peda l,e.g. byave hicle occupant. #
Alw ayssecur eth eve hicle agains tro ll‐
ing away bef oreyo ulea veit. Re
quirement s:
R The vehicle isstatio nary. R
The driver's door isclosed ortheseat belton
th edr iver's side isfastened.
R The engine isrunning orhasbe en automati‐
cally switc hedoffby theEC Ostar t/ stop
funct ion.
R The electr icpar king brak eis released.
R ActiveDis tance AssistDIS TRONI Cis de acti ‐
va ted.
R The transmis sionisin position 005B,005Eor005C.
Ac tiv atin gthe HOL Dfun ction #
Dep ress thebr ak epedal andafte ra shor t
time quickl ydepr essfurther until the00D9
displa yappear sin themultifunc tiondispla y. #
Release thebr ak epedal.
Deactiv atingtheHOLD function #
Depr esstheacceler ator pedal topull away.
or #
Depr essthebr ak epedal untilthe00D9 dis‐
pla ydisappear sfrom themultifunc tiondis‐
pla y. 228
Driving andparking

The
HOLD functionisdeactiv ated inthefo llo w‐
ing situat ions:
R ActiveDis tance AssistDIS TRONI Cis acti va‐
te d.
R The transmiss ionisswitc hedtoposition 005D.
R The vehicle issecur edwithth eelectr icpar k‐
ing brak e.
In thefo llo wing situat ions,th eve hicle isheld by
tr ans missi on positio n005D and /or bytheelectr ic
par king brak e:
R The seat beltisunf astened andthedr iver's
door isopened.
R The vehicle isswitc hedoff.
R Ther eis amalfunction inthesy stem orthe
po we rsupp lyis insuf ficie nt. AI
RMA TIC Fu
nction ofAIRMA TIC
Mer cedes- AMGvehicl es:obse rveth eno tesin
th eSupplement .Yo uco uld other wise failto rec‐
ogni zedangers. AIRM
ATIC isan air suspe nsion system withan
all-r ound leve lcon trol system, whic halso
ensur esthebes tpossible suspension andcon‐
st ant grou nd clea rance, evenwi th aladen vehi‐
cle. When driving atspeed, theve hicle islow‐
er ed aut omaticall yto improv edr iving safetyand
to reduce fuelconsum ption. Youalso have the
op tion ofmanuall yadjus tingtheve hicle leve l.
AI RMA TICiscom prised ofthefo llo wing func‐
tion sand compone nts:
R All-round airsuspe nsion
R Spe ed-depen dentlo we ring
R Manua llysel ect ablehigh leve lse tting for
gr eat erground clearance whichcan be
adjus tedusing aleve lbutt on
R Vehicl eswith ADSPL US: alsoAd aptive
Dam pingSy stem withcon stant adjus tment
of dam pingch aract eristic sfo rim prov ed driv‐
ing comf ort
Suspension settings andvehicl eleve lper
dr ive pr og ram
Dr ive pr ogr am A and;:
R The susp ens ion se tting iscomf ortable. R
The vehicle issetto thenor mal leve l.
R When drivin gat speeds ofappr oximat ely
87 mph(1 40 km/h) orabo ve,th eve hicle is
lo we red.
R When driving atspeeds belowappr oximat ely
25 mph(4 0km/h), theve hicle israised
ag ain.
Dr ive pr ogr am £ (Mercedes -Maybac hve hi‐
cles only):
R The suspension settin gis very comf ortable.
R The vehicle issetto thenor mal leve l.
R When drivin gat speeds ofappr oximat ely
87 mph(1 40 km/h) orabo ve,th eve hicle is
lo we red.
R When driving atspeeds belowappr oximat ely
25 mph(40 km/h), theve hicle israised
ag ain.
Dr ive pr og ram C:
R The susp ension setting isfirm er.
R The vehicle islowe redto spor tle ve l. Dr
ivin gand parking229

R
The attention leve lde term ined byATTENTION
ASS IST:
- thefuller thecir cle, thehigher theatt en‐
tion alleve lde term ined
- asyour att entio nwa nes, thecir cle inthe
cent erofthedispla ybecomes smaller
If AT TENTION ASSISTis unable tocal cul ateth e
att ent ion leve land cannotissue awa rning, the
Sys tem Suspend edmes sage appear s.
If awa rning isgiv en intheIns trument Display,
th emultimedia system offers to sear chfora re st
ar ea. Youcan selectare st area and star tna vig a‐
tio nto this rest area. This function can beact iva‐
te dand deactiv ated inthemultimedia system.
If AT TENTION ASSISTis deactiv ated, theÛ
symbol appearsin theassis tance grap hicin the
Ins trument Displaywhen theengine isrunning .
AT TENTION ASSISTis activ ated aut omaticall y
when theengine isre-sta rted. The lastselect ed
sensit ivityleve lre mains stor ed.
Sy stem limit s
AT TENTION ASSISTis activ ein the37 mph
(60 km/ h)to 124mp h(2 00 km/h) speedra ng e. The
func tional ity ofATTENTION ASSISTis
re strict ed, and warnings maybe dela yedor not
occ uratall inthefo llo wing situat ions:
R Ifyo uha ve been driving forless than appr ox‐
imat ely30 min utes.
R Ifth ero ad con dition ispoor (unevenro ad
sur face orpotholes).
R Ifth er eis ast ro ng side wind.
R Ifyo uadop ta spor tydrivin gst yle (high cor‐
ner ing speeds orhigh ratesof acceler ation).
R Ifth eSt eer ing Assis tfunc tion ofActiveDis ‐
ta nce AssistDIS TRONI Cis acti ve.
R Ifth etime hasbeen setincor rectly .
R Ifyo uch ang elane sand vary your spee dfre‐
qu ent lyIn activ edr iving situation s.
The ATTENTION ASSISTtir edness oraler tnes s
assessment isdele tedand restar tedwhen con‐
tin uing thejour neyin thefo llo wing situat ions:
R Ifyo uswit choffth eengine.
R Ifyo uunf astenyo ur seat beltandopen the
dr iver's door (e.g.chang ingdriver sor taking
a br ea k). Se
ttin gAT TENTI ONASSIST
Multimedia system:
4 © 5
Set ting s5
Assist ance
5 Atten tion Assist
Se tting options #
Select Standard, SensitiveorOff.
Sugg esting are st area #
Select SuggestRes tArea. #
Activateor deacti vate thefunc tion.
If AT TENTION ASSISTde tects fatig ue or
incr easing lack ofatt ention ,it sugg ests a
re st area inthevicinit y. #
Select thesugg estedre st area.
Yo uar eguided totheselect edrest area. Tr
af fic Sign Assis t Fu
nction ofTraf fic Sign Assis t
Tr af fic Sign Assistdetects traf fic sig ns with the
multifu nctioncamera(/ page20 1). Itassi sts
yo uby displa yingdetected spe edlimits and
ove rtakin gre strictions intheins trument cluster 262
Driving andparking

R
The seat beltonthefront passeng erseat
mus tno tbe inser tedin theseat beltbuckle.
Switc hingthere ading light on and off #
Brief lymo veahan dup ordown ben eathth e
inside rear vie wmir ror.
The readin glight isswit ched on orofffo rth e
dr iver or front passeng er. Switc
hingthesear chlight onand off #
Toswitc hon: reac hacr oss thefront
passeng erseat withahand.
The sear chlight isswitc hedonforth edr iver . #
Toswitc hof f:take ahan dbac kaw ay from
th efront passeng erseat.
The sear chlight isswitc hedoffag ain. Inf
orma tion onprofiles, themes, suggestions
and favo rite s &
WARNIN GRisk ofbeco ming trap ped
du ring adjus tment ofthedr iver's seat
af te rcall ing upadr iver profile
Selecting apr ofile ma ytrigg eran adju stment
of thedr iver's seat totheposition save d
und erthepr ofile. Youor other vehicle occu‐
pants couldbeinjur edinthepr ocess. #
Mak esur eth at when theposition of
dr iver's seat isbeing adjustedusing the
multime diasystem, nopeople orbody
par tsarein theseat's rang eof mo ve‐
ment.
If th er eis arisk ofsomeone becoming trap‐
ped, stop theadjus tmentpr ocess immedi‐
at ely: #
a)Tapth ewa rning mess ageon the
media display.
or MBUX
multimedia system 28
7

Tr
aile rhitc h
R Remo vetrace sof rust on theball, e.g.witha
wir ebr ush.
R Remo vedirtwit halint- free cloth.
R Afterclea ning, oilorgrease theball head
lightl y.
R Obser vetheno teson car ein thetrailer hitch
manuf acturer'soper ating instruction s.
R Donotclean theball neckwit hapo we r
wa sher orsol vent. No
teson car eof theint erior &
WARNIN GRisk ofinju ryfrom plastic
par tsbreakin gof faf te rth euse ofsol‐
ve nt-ba sedcarepr od ucts
Ca reand cleanin gpr oduc tscon tainin gsol‐
ve nts can causesurfaces inthecoc kpit to
become porous. When theairbags are
deplo yed, plas ticpar tsma ybr eak away. #
Donotus ean ycar eor cle ani ng prod ‐
ucts containing solvents tocle an the
coc kpit. &
WARNIN GRisk ofinju ryor deat hfrom
bleac hedseat belts
Bleac hingordyeing seat belts canseverely
we aken them.
This can, forex am ple, caus eseat beltsto
te ar or failin an acc ident . #
Neverblea chordyeseat belts. Obser
vetheno teson cleaning andcareto avo id
ve hicle damag e.
Seat belts
R Clea nwit hluk ewa rmand soap ywa ter.
R Donotus ech emical cleaningag ent s.
R Donotdr yseat belts byheating them toove r
17 6°F (80 °C) orexposing them todirect
sunlight .
Displa y
R Switc hof fth edispla yand letit cool down.
R Clean thesur face car efu llywith amic rofiber
clo thand asuit able displa ycar epr oduc t
(TF T/L CD).
R Donotuse anyot her agents. Plas
tictrim
R Clea nwit hadam pmicr ofiber cloth.
R Forhea vysoil ing: useacar epr odu ctrecom‐
mend edforMer cedes-Benz.
R Donotatt achsticke rs,fi lms orsimilar mate‐
ri als.
R Donotallo wcos metics,ins ect repellent or
sun cream tocome incont actwith theplas‐
tic trim.
Re alwo od/t rim eleme nts
R Clea nwi th amic rofiber cloth.
R Blackpiano-lac quer look: clean withadam p
clo thand soap ywa ter.
R Forhea vysoil ing: useacar epr odu ctrecom‐
mend edforMer cedes-Benz.
R Donotuse solvent-based cleaning agents,
poli shes orwa xes.
Headliner
R Clea nwit habr ush ordrysham poo.
Car pet
R Use acar petand textil ecle ani ng agent rec‐
omme ndedforMer cedes-Benz. 33
4
Mai ntenance andcare

Pr
eceding letter 1 1:
R Without :passeng ervehicle tires accor dingto
Eur opeanma nuf actu ring standar ds.
R "P": passe nger vehicle tires accor dingtoUS
manuf acturingstandar ds.
R "LT": light truc ktir es acc ordin gto US manu‐
fa ctur ingstandar ds.
R "T": com pact emer gency sparewheels with
high tirepr essur eth at areon lyde signe dfo r
te mp orar yuse inan emer gency .
As pec tra tio 3 3:
Ra tio betwee ntir ehe ight and tirewi dthin pe r‐
cent (tire height divided bytirewi dth).
Tir eco de 4 4
(tire type ):
R "R"ra dial tire
R "D": bias plytire
R "B": bias beltedtires
R "ZR": radial tirewit hamaximum speedabove
14 9mp h(2 40 km/h) (optional) Rim
diame ter5 5:
The diam eter ofthebead seat(notth ediame ter
of therim flang e).The rim dia me teris specif ied
in inc hes (in).
Load-be aring inde x6 6:
Numer icalcode that spec ifies themaximum
load-bear ingcapacity ofatir e(e.g. "91" cor re‐
sponds to1356 lbs (615 kg)).
The load-bear ingcapacity ofthetir emus tbe at
leas thalf theper missible axleload ofyour vehi‐
cle. Donotove rload thetir es by exc eeding the
specif iedload limit.
See also:
R Maximum permissible loadontheTire and
Loadi ngInfo rm atio nplacar d(/ page36 3)
R Max imum tireload (/page36 9)
R Load index
Speed ratin g7 7:
Spe cifiesth eappr oved maximum speedofthe
tir e. %
Anelectr onicsp ee dlimi terpr eve nts your
ve hicle from exceeding aspeed of130mp h
(2 10 km/h) .
Ma kesur eth at your tires have there qu ired
speed rating .Yo ucan obtain informat iononthe
re qu ired speed rating from anauthor ized
Mer cedes-B enzCent er.
Summ ertires Inde
xS peedra tin g
Qu pto 100mp h(1 60 km/h)
Ru pto 106mp h(170 km/h)
Su pto 112mp h(1 80 km/h)
Tu pto 118mp h(1 90 km/h)
Hu pto 130mp h(210 km/h)
Vu pto 149mp h(2 40 km/h)
Wu pto 168mp h(2 70 km/h)
Yu pto 186mp h(3 00 km/h) Whee
lsand tires 37
1

Inde
xS peedra tin g
ZR ...Y 4
upto186mp h(3 00 km/h)
ZR ...(..Y) 4
over18 6mp h(3 00 km/h)
ZR 4
over14 9mp h(2 40 km/h) R
Specifying thespeed rating asthe"ZR" index
in tirecode 4isop tion alfortir es up to
18 6mp h(3 00 km/h) .
R Ifyo ur tireco de 4 includes "ZR"andther e
is no speed rating 7,find outwh atthemax‐
imum speed isfrom thetir emanuf acturer.
R Ifload-bear inginde x6 and speed rating 7
ar ein brac kets, themaximum speedrating of
yo ur tireis abo ve186mp h(300 km/h). To
fi nd outth emaximum speed,askthetir e
manuf acturer. All-w
eather tires and wint ertires Inde
xS peedra tin g
Q M+S 5
upto100mp h(1 60 km/h)
T M+S 5
upto118mp h(190 km/h)
H M+S 5
upto130mp h(210 km/h)
V M+S 5
upto149mp h(2 40 km/h) Wi
nter tires bear the004D snowflak esymbol
and fulfillthere qu iremen tsof theRu bber Manu‐
fa ctur ersAssoci ation (RMA) andtheRu bber
Assoc iation ofCanada (RAC)rega rding thetir e
tra ction onsno w.
Load index8 8:
R Nospec ificat ion given: standar dload (SL)
tir e
R "XL" or"Ex tra Load": extra load tireor rein‐
fo rc ed tire
R "Light Load": lightloadtire R
"C", "D", "E":aload rang eth at depen dson
th emaximum loadthat thetir ecan carryata
cer tain pressur e Def
inition ofterm sfo rtir es and loadin g
Ti re stru ctu reand charact eristics :descr ibes
th enumber oflaye rs or thenumber ofrubber -
coat edbelts inthetir econ tact surface and the
tir ewa ll.These aremade ofsteel, nylon, poly‐
es terand other materials.
Bar: metric unit fortir epr essu re.
14 .5038 pounds persquar einc h(p si) and
10 0kilop ascal(kP a)istheeq uiv alent ofone bar.
DO T(Depar tment ofTranspo rtation ):DO T-
mar kedtir es fulf illthere qu iremen tsof the
US Depar tment ofTrans portatio n.
Av erag ewe ight oftheve hicl eoc cupants: the
num berof vehicle occupants forwhi chtheve hi‐
cle isdesigned, multiplied by150lb (68 kg).
4 "ZR" stat ed inthetir ecode.
5 Or "M+S 004D" forwint ertires 37
2
Wheels andtires

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

Occupant
safety Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0075 Re stra int system warning
lam p The
redre stra int system warning lam pis lit while theengine isrunning .
*Th ere stra int system ismalfunct ioning(/page37 ). &
WARNIN GRisk ofinju rydue tomalfu nctions inthere stra int system
Com ponen tsinthere stra int system maybe activ ated unint entionally ornotdeplo yas planned inan acciden t. #
Have there stra int system checkedand repair edimmediat elyataqu alif ied spec ialistwo rkshop. #
Drive on car efully . #
Notethemessag eson themultifunc tiondispla y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
0076
Sea tbel twa rning lam p
fl ashes The
redseat beltwarning lam pflashes andanintermit tent wa rning tone sou nds.
*T he driver or front passeng erhas notfa stened their seat beltwhile theve hicle isin mo tion. #
Fasten your seat belt(/ page41 ).
*T her ear eobject son thefront passeng erseat. #
Remo vetheobjec tsfrom thefront passeng erseat. 462
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0076 Seat beltwarning lam p
light sup The
redseat beltwarning lam pwill light upforsix seconds oncetheengine hasstar ted.
In addition, awa rning tone maysou nd.
*T he seat beltwarning lam pre minds thedr iver and front passeng ertofasten their seat belts. #
Fasten your seat belt(/page41 ).
If yo uha ve placed objectson thefront passeng erseat, theseat beltwarning lam pma yre main lit. Ve
hicl e Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
Ù Elect ric po we rst eer ing
wa rning lam p(red) The
redelect ric po we rst eer ing warning lam pis lit while theengine isrunning .
*Th epo we rassi stanc eor thesteer ing itself ismalfunct ioning. &
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. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Notethemessag eson themultifunc tiondispla y. Dis
play messa gesand warning/ indic ator lam ps 463