2020 MERCEDES-BENZ GLA width

in
fro nton the edge ofthe road because of
its narr owwidth. Thedistanceto the vehic le
in fro ntwill betoo shor t.
R Obst acles andstationar yvehic les:Active
Dist anceAss istDISTRON ICdoes notbrak e
for obst acles orstat ionar yvehic les.If,for
exam ple,thedete cted vehic leturn sa cor -
ner and anobst acle orstat ionar yvehic leis
reve aled, ActiveDist anceAss istDISTRON IC
will notbrak efor them.
R Ac tiveDist anceAss istDISTRON ICmay mis-
tak enly detectvehic lesthat arecrossin g
your lane. Ifyou activate ActiveDist ance
Ass istDISTRON ICunder thefollowin gcon di-
tion s,the vehic lecould pullaway uninten-
tion ally:
- at traffic lightswith crossin gtraffic ,for
exam ple
- ifthe reisavehic lein fro nt,aft eracro ss-
ing, with theHOL Dfunc tion activate d
In such situat ions,brak eif nec essary. Active
Dist anceAss istDISTRON ICwill thenbe deact i-
vate d. HOLD
function
Gener alnotes The
HOL Dfunc tion canassist thedrive rin the
followin gsituat ions:
R When pulling away,especiallyonsteep
slopes
R When maneuverin gon steep slopes
R When waitingin traffic
The vehic leiskept stationar ywitho utthe
drive rhavin gto depres sthe brak epedal.
The brak ingeffe ctiscan celed andtheHOL D
func tion deact ivatedwhen youdepres sthe
acc elerat orpedal topull away. Imp
ortant safety notes G
WARN
ING
If the vehic leisonly brakedusing theHOL D
func tion,the vehic lemay rollaway inthe fol-
lowing situationswhen youleave thevehi-
cle:
R ifthe reisamalfun ction inthe syst emor
in the voltage supply
R ifthe HOL Dfunc tion isdeact ivatedby
depres singtheaccelerat orpedal orbrak e
pedal, e.g.byavehic leocc upant
There isarisk ofan acc ident .
Always deactivatethe HOL Dfunc tion and
secur ethe vehic leagainst rollingaway
befor eyou leave it.
! When
ActiveDist anceAss istDISTRON IC
or the HOL Dfunc tion isact ivat ed, the vehi-
cle brak esautom atically incer tain situa-
tion s.
To avoid damage tothe vehic le,deact ivate
Ac tiveDist anceAss istDISTRON ICand the
HOL Dfunc tion inthe followin gor similar sit-
uation s:
R when towingthe vehic le
R in the carwash
Deac tivate the HOL Dfunc tion (Ypage 166).
Activa tioncondit ions You
canactivat ethe HOL Dfunc tion if:
R the vehic leisstat ionar y
R the engin eis runn ingorifit has been auto-
matic allyswitc hedoffbythe ECO start/
sto pfunc tion
R the drive r'sdoor isclos edoryour seatbelt
is fast ened
R the elect ricpark ingbrak eis released
R Ac tiveDist anceAss istDISTRON ICisdeact i-
vat ed
R the transm ission isin posit ion005B, 005Eor005C
on vehic leswith autom atictransm ission Driving
systems
165Driving andparking Z

R
ifthe camer alens isdirt yor obst ructed.
Obser vethe noteson clean ing
(Y page 284)
R ifthe rear ofyour vehic leisdamaged. Inthis
case, havethecamer aposit ionand setting
chec kedataqualified specialist workshop.
The field ofvision andotherfunc tionsof the
rear view camer amay berest ricteddue to
addition alacc essor iesonthe rear ofthe vehi-
cle (e.g. licenseplate holder ,rear bicyc le
rack ).
i The
contrast ofthe display maybeaffec -
ted bythe sudden presenceof sunligh tor
oth erlight sourc es,e.g. when exitinga
garage. Payparticular attent ion inthis situa-
tion .
i If
usability issever elyrest ricted, e.g. due
to pixel errors,have thedisplay repairedor
replac ed.
Activa ting/d eactivating therea rview
cam era X
To acti vate:make surethattheSmar tKey
is in posit ion0048inthe ignit ionlock .
X Make surethattheActi vationbyRgear Acti
vationbyRgear
func tion isselec tedinthe multim ediasys-
tem ;see theDigit alOperat or'sManual.
X En gage reversegear.
The area behin dthe vehic leisshown with
guide linesinthe multim ediasystemdis-
play.
The image fromthe rear view camer ais
available throughout themane uverin gproc -
ess.
To deact ivate:the rear view camer adeact i-
vate sif you shift thetransm ission to005D or
aft erdrivin gfor wards ashor tdist ance.
The innersegme ntsof the warnin gindic ator
are displayed inred ifthe reisacom plete sys-
tem failure. Theindic atorlamp inthe
PARK TRONIC buttonlight sup.
If the syst emfails atthe rear ofthe vehic le:
R the rear segme ntsare shown inred when
back ingup.
R the rear segme ntsare hidden whendriving
for wards. Messa
gesinthemu ltim edia system
disp lay The
rear view camer amay show adist orted
view ofobst acles, showtheminc orre ctly or
not atall. The rear view camer adoes notshow
obje ctsin the followin gposit ions:
R very closeto the rear bumper
R under therear bumper
R in the area immed iatelyabove thetailgat e
handle
! Obj
ectsnot atgroun dlevel mayappear to
be furt her away thantheyact ually are,e.g.:
R the bumper ofapark edvehic le
R the drawbar ofatrailer
R the ball couplin gof atrailer towhitch
R the rear sectionofan HGV
R aslant edpost
Use theguideline sonly fororien tation.
Appr oach objectsno furt her than thebot-
tom -most guideline . 0043
Yellow guidelineatadist anceof approx -
imate ly13 ft(4. 0m) fromthe rear ofthe
vehic le
0044 Whit eguide linewitho utste erin ginput –
vehic lewidth including theexterior mirrors
(st atic )
0087 Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tste erin gwheel angle(dynamic )
0085 Yellow lanemark ingthe cour sethe tires
will takeat the curr entsteerin gwheel
angle (dynamic ) Driving
systems
179Driving andparking Z

0083
Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear ofthe
vehic le
0084 Vehic lecen teraxle (mark erassist ance)
006B Bumper
006C Red guide lineatadistan ceofapprox -
imate ly12 in(0. 30 m)from therear ofthe
vehic le 0043
Frontwarnin gdisplay
0044 Addit ional measurem entoperat ionalreadi-
ness indicatorforPark ingAssist
PARKT RONIC
0087 Rear warnin gdisplay
When ParkingAssistPARKT RONIC isopera-
tion al(Y page 173),addition almeasurem ent
operat ionalreadin essindic ator0044appears in
the multim ediasyste mdisplay. Ifthe Park ing
Ass istPARKT RONIC warningdisplays are
act ive orlight up,warnin gdisplays 0043and 0087
are also active orlight upcor respon dinglyin
the multim ediasyste mdisplay. "Rever
separking" funct ion Ba
cking upstraight intoapa rking space
withou tsteer inginpu t 0043
Whit eguide linewithout steerin ginput –
vehic lewidth including theexterior mirrors
(stat ic)
0044 Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tste erin gwheel angle(dynamic )
0087 Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear area
0085 Red guide lineatadistan ceofapprox -
imate ly12 in(0. 30 m)from therear area
X Make surethattherear view camer ais
switc hedon(Ypage 179).
The lane andtheguide linesareshown .
X With thehelp ofwhite guide line0043,chec k
wheth erthe vehic lewill fitintothe park ing
space.
X Usin gwhite guide line0043asaguide, care-
fully back upunt ilyou reach theend posi-
tion .
Red guide line0085isthe nat the end ofthe
park ingspace. Thevehic leisalmost parallel
in the park ingspace. 180
Driving
systemsDriving andparking

Reve
rseperpe ndicularparkin gwi th
ste ering input 0043
Parking spacemar king
0044 Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe cur-
rent steering wheelang le(dyna mic)
X Drive past the parking spaceand bring the
vehi cletoastand still.
X Ma kesure that therearvie wcame rais
swi tched on(Ypage 179 ).
The lane and theguide lines areshown.
X Whi lethe vehi cleisat astand still,turn the
stee ring wheelin the directi onofthe park-
ing spaceunti lye llow guide line 0044 reaches
pa rking spacemar king 0043.
X Ma inta inthe stee ring inputand reverse
care fully. 0043
Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe cur-
rent steering wheelang le(dyna mic)
X Stop thevehi clewhe nit is almost exactly in
front ofthe parking space.
The whitelane sho uld be asclo setoparal lel
wi th the parking spacemar king aspos sible. 0043
Whiteguide line atthe curr entstee ring
inp ut
0044 Parking spacemar king
X Tu rn the stee ring wheelto the center posi-
tion whilethe vehi cleisstati onary. 0043
Redgu ide line atadi stance ofappro x-
ima tely 12in(0.30 m)from the rearar ea
0044 Whiteguide line withou tste ering input
0087 End ofparki ng space
X Bac kup car efully unti lyo uha ve rea che dthe
fin alpo sitio n.
Re dgu ide line 0043 isthe nat end ofparki ng
sp ace 0087.The vehicleis almos tpa rallel in
the parki ng space . Dr
ivi ng system s
181Drivi ng andparki ng Z

Chec
kwheel sand tires for damag eat least
on ce amon th.Chec kwheel sand tires after
driv ingoff-road oron roug hroad test track s.
Dam aged wheel scan caus ealoss oftirepre s-
sure .Pay particular attentio nto damag esuc h
as:
R cut sin thetir es
R punc tures inthetir es
R tears inthetir es
R bulges ontires
R def orm ationor sev ere corrosio non wheel s
Regular lych eck thetir etread dept hand the
co ndi tionof thetread across thewhole width
of all tires (Y page 306). Ifne ces sary, turnth e
fr on twheel sto full lockin ord erto ins pec tth e
inn erside ofthetir esurf ace.
All wheel smust haveavalv ecap topro tect
th evalv eagain stdirt and mois ture.Do not
moun tanyt hingon to thevalv eot her than the
st and ard valvecap orother valvecaps
appro vedbyMer cedes-Ben zfor your vehicle.
Do notuse anyother valvecaps orsyst ems ,
e.g .tir epre ssur emon itorin gsyst ems .
Regular lych eck thepre ssur eof all thetir es
part icular lyprio rto lon gtrips. Adjus tth etir e
pre ssur eas neces sary (Ypage 308).
Obse rveth eno teson theeme rgencyspar e
wheel (Ypage 331).
The servicelife oftires depen ds,amon got her
th ing s,on thefoll owin gfac tors:
R Dr ivin gst yle
R Tire pressur e
R Dis tan cecover ed Not
eson tiretread G
WAR
NING
If th ere isins ufficie nttiretread, thetir etrac-
tio ndec reas es.The tiretread isno longer
able todiss ipatewate r.This increas esthe
ris kof hydr oplan ingwhen theroad surface
is wet ,part icular lywhen theveh icle'sspee d
is no tadapt edtotheroad condi tions.Ther e
is aris kof an acc iden t.
When thetir epre ssur eis toohigh ortoo
low, tires may wear differe ntly at diff ere nt
poin tson thetir etread. Therefore, regularly
ch eck thetir etread dept hand theco ndi tion of
thetread across thewhole widthof all
tir es.
Min imum tiretread dept hon :
R Sum mer tires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm)
For safe tyreas ons,have thetir es rep lace d
bef ore they reac hth elegally prescribe dmin -
imum tiretread dept h. Mark
ing0043sho wswher ebar indicat or0044 for
tr ead wear isint egr atedint oth etir etread.
Tre adwear indicat ors (TWI )are required by
law. Sixindicat ors are posi tionedon thetir e
tr ead. They arevisible once atread dept hof
appr oximat ely00CD in(1.6 mm)ha sbe en
re ach ed. Ifth is isthecas e,thetir eis so worn
th at itmust berepl aced . Select
ing,mou nting and replacing
tir es G
WAR
NING
Ex cee dingth est ate dtir eload- beari ngcapa-
cit yand theappro vedmax imum speed
coul dlead totiredamage orthetir eburs t-
ing .Ther eis arisk ofacc iden t.
Ther efore, onlyuse tiretype sand sizes
appro vedforyour vehicle mode l.Obse rve
th etir eload rating and spee drat ing
requi redforyour vehicle.
R On lymoun ttir es and wheels ofthesame
type andmake.
Ex cep tion:itis perm issibleto moun ta dif-
fer ent type ormak ein theeven tof aflat
tir e. Obse rveher eth e"MOE xtend edtires 306
Oper
ationWh eels andtires

tio
n,or exce ssive load ing ,ei the rse pa ratel y
or incomb ination,can causeexce ssive heat
bu ild-u pand possi ble tire failur e.
The temp eraturegra desar eA (th ehighe st),B,
and C,rep resenti ngthe tire'sres istance tothe
ge nera tionof heat and itsability todissi pate
he at wh en tested undercontro lled cond itions
on asp eci fiedind oorla bo ratory testwh eel.
Sus tained high temp eraturecan causethe
ma teri alof the tire todegenera teand reduce
tire life, and exce ssive temp eraturecan lead to
su dd en tire failur e. The gradeCcorr espo nds
to alevel ofperfo rma nce which allpa sse nge r
car tiresmu stmee tund erthe FederalMoto r
Veh icleSaf ety Stand ardNo. 109. Grad es B
and Arep resent highe rle vel sof perfo rma nce
on the labo ratory testwh eeltha nthe minim um
req uired bylaw. Tire
labelin g
Ov erv iew 0043
UniformTire Qu ality Grad ing Stand ards
(Y page 324 )
0044 Dep artment ofTra nsp orta tion,Tire Ide ntif i-
cati onNumbe r(Y page 323)
0087 Maxim um load rating (Ypage 323 )
0085 Maxim um tire pressu res (Ypage 311 )
0083 Manuf actu rer
0084 Tire ma teri al(Y page 324 )
006B Tire size designa tion,load -be aring capacity
and spee dra ting (Ypage 321 ) 006C
Loadind ex(Y page 323 )
006D Tire nam e
Th ema rkings descri bedab ove areon the tire
in ad ditio nto the tire nam e(sales designa tion)
and themanuf actu rer'snam e.
i Ti
re data isveh icle-s pecificand mayde vi-
ate fromthe data inthe exampl e.
Tire size des ignati on,lo ad-b earin g
ca pac ityand speedratin g G
WA
RNING
Excee ding the stated tire load -be aring capa-
city and theappro ved maxim um spee d
cou ldlead totire dama georthe tire burst-
ing .Th ere isaris kof acc ident.
Th ere fore,onl yus etire typesand sizes
ap pro ved foryour veh iclemod el.Ob serve
the tire load rating andspee dra ting
req uired foryour veh icle. 0043
Tire width
0044 Nom inalas pe ct ratio in%
0087 Tire cod e
0085 Rim diam ete r
0083 Loadbe aring index
0084 Spe edrating
Ge neral: dependi ng on the manuf actu rer's
sta nda rds,the size impri nted inthe tire wall
ma ynot conta inany letters orma yconta in
one letter thatpre ced esthe size descri ption.
If the reisno letter preced ingthe size descri p-
tio n(a ssho wnabove ):the searepa sse nge r
veh icletire sacc ording toEur opeanma nuf ac-
tur ing standa rds.
If "P "pre ced esthe size descri ption: theseare
pa sse nge rveh icletire sacc ording toU.S. man-
uf actu ringsta nda rds. Al
labo utwhee lsan dtire s
321Whe elsand tires Z

If
"LT" precedes thesize descriptio n:these are
light truck tiresaccording toU.S. manufactur-
ing standards.
If "T" precedes thesize descriptio n:compact
emergency wheelswith high tirepressu rethat
are only desig nedfortemporary useinan
emergency.
Tire width: tirewidth0043 shows thenominal
tire widthinmill imeters.
Aspec tratio: aspectratio 0044isthe size ratio
betwee nthe tire height andtirewidthand is
shown inpercent. Theaspe ctratio iscalcul a-
ted bydivid ingthe tire widthby the tire height.
Tire code :tire code 0087specifie sthe tire type.
"R" represents radialtires; "D"represents
dia gonal tires;"B"represents diagonal radial
tires.
Optional ly,tires withamaximum speedofover
149 mph (240 km/h )may have "ZR"in the
size descriptio n,dependi ngon the manufac-
turer (e.g.245/40 ZR18) .
Rim diameter: rimdiameter 0085isthe diame-
ter ofthe bead seat,notthediameter ofthe
rim flange. Therimdiameter isspecifie din
inches (in).
Load-be aringindex: load-bearing index0083is
a numerical codethatspecifie sthe maximum
load -bearing capacityof atire.
Do not overloa dthe tires byexceeding the
specifie dload limit.The maximum permissible
load canbefound onthe vehicle 'sTire and
Loadi ngInformation placard onthe B-pilla ron
the driver's side(Ypage 317).
Example:
Load-be aringindex 91indicates amaximum
load of1,356 lb(615 kg)that thetires can
bear. Forfurther information onthe maximum
tire load inkilogra msand lbs,see
(Y page 323).
For further information onthe load beari ng
index, see"Loa dindex" (Ypage 323).
Speed rating: speedrating0084specifie sthe
appro vedmaximum speedofthe tire.
i Tire
data isvehicle -specific andmay devi-
ate from thedata inthe example .
Rega rdless ofthe speed rating, always observe
the speed limits.Drive careful lyand adapt
you rdriving styletothe traffic conditions. Summer
tires Index Speed
rating Q up
to100 mph (160 km/h) R up
to106 mph (170 km/h) S up
to112 mph (180 km/h) T up
to118 mph (190 km/h) H up
to130 mph (210 km/h) V up
to149 mph (240 km/h) W up
to168 mph (270 km/h) Y up
to186 mph (300 km/h) ZR...Y up
to186 mph (300 km/h) ZR...(..Y) over
186mph (300 km/h ) ZR over
149mph (240 km/h ) R
Optional ly,tires withamaximum speedof
over 149mph (240 km/h) mayhave "ZR"in
the size descriptio n,dependi ngon the man-
ufacturer (e.g.245/40 ZR18).
The service specifica tionismade upofload -
beari ngindex 0083and speed rating0084.
R Ifthe size descriptio nof you rtire include s
"ZR "and there arenoservice specifica tions,
ask thetire manufacture rin order tofind
out themaximum speed.
If aservice specifica tionisavai lable,the
maximum speedislimi ted according tothe
speed ratinginthe service specifica tion.
Example: 245/40ZR1897Y.Inthis exam-
ple, "97Y"isthe service specifica tion.The
letter "Y"represents thespeed rating. The
maximum speedofthe tire islimi ted to
186 mph (300 km/h).
R The size descriptio nfor alltires withmaxi-
mum speed sof over 186mph (300 km/h)
must include "ZR"and theservice specifica -
tion must begiven inparentheses .Example:
275/40 ZR18 (99 Y).Speed rating"(Y)"
indicates thatthemaximum speedofthe
tire isover 186mph (300 km/h). Askthe
tire manufacture rabou tthe maximum
speed . 322
Al
labout wheelsand tiresWheel sand tires

Rec
omme ndedtire press ures
The reco mmend edtire pressu reappliesto the
tire smou nted atthe facto ry.
The Tireand Loading Inform ation placa rdcon-
tai ns the reco mmend edtire pressu res forcold
tire son aful lyloa ded vehicleand forthe maxi -
mum permis siblevehi clespe ed.
The tirepressu retab lecontai nsthe reco m-
mend edpre ssu res forcoldtire sfor various
ope ratingcondi tions,i.e .di fferi ngloadand
spe edcondi tions.
In cre ase dveh icle we ight due toopti onal
equi pment
The comb inedweigh tof allstand ardand
opti onalequ ipment availab lefor the vehi cle,
reg ard less ofwhe ther itis actu ally insta lled on
the vehi cleornot.
Rim
Thi sis the partof the whe elon whi chthe tire
is mou nted.
GAW R(Gro ssAxleWei ght Ratin g)
The GAW Ris the maxi mum grossaxl ewe igh t
rati ng. The actu alloa don anaxlemus tneve r
excee dthe gros saxl ewe igh trati ng. The gros s
axl ewe igh trati ngcan befou ndonthe vehi cle
id entif ication plate onthe B-pi llar on the driv-
er's side.
Spe edrating
The speedrati ngispa rtof the tire identif ica-
tion. Itspe cifiesthe speedrang efor whi chthe
tire isap pro ved .
GVW (GrossVehi cle Wei ght)
The gros svehi cleweigh tincl udes the weigh t
of the vehi cleincluding fuel,tool s,the spare
whe el,acce ssoriesinsta lled, occu pants, lug-
ga ge and thedrawbarnose weigh t,ifap plica -
bl e. The gros svehi cleweigh tmus tnot excee d
the gros svehi cleweigh trati ngGVW Ras spe ci-
fie don the vehi cleidentif ication plate onthe
B-pi llar on the driver' ssid e.
GVWR (GrossVehi cle Wei ght Ratin g)
The GVW Ris the maxi mum permis siblegros s
we igh tof aful lyloa ded vehicle(the weigh tof
the vehi cleincluding allacce ssories,occu -
pa nts, fuel,lu gga geand thedrawbarnose -
we igh t,ifap plica ble). The gros svehi cleweigh t
rati ngisspe cified on the vehi cleidentif ication
pl ate onthe B-pi llar on the driver' ssid e. Maxi
mum loaded vehicle we ight
The maxi mum weigh tis the sum of:
R the curb weigh tof the vehi cle
R the weigh tof the acce ssories
R the loadlimit
R the weigh tof the facto ryinsta lled opti onal
equ ipment
Ki lopasc al(kP a)
Metri cuni tfor tire pressu re.6.9 kPa corre -
spo nds to1psi .Another unitfor tire pressu re
is ba r.100 kilopa scals(kPa )are the equivalent
of 1ba r.
Lo ad index
In addition tothe load-be aring index, the load
ind exmay also be imp rinte don the sidewallof
the tire.Thi sspe cifiesthe load-be aring cap a-
city more precise ly.
Curb weight
The weigh tof avehi clewith stand ardequip-
ment including the maxi mum capacityof fue l,
oil and coolant. Italso incl udes the air-condi -
tioni ngsystem andoptionalequ ipment ifthes e
are insta lled inthe vehi cle,bu tdoe snot
incl udepa sse ngers orlugga ge.
Maxi mum load rating
The maxi mum tireloadis the maxi mum per-
mis siblewe igh tin kilogra msorlbsfor whi cha
tire isap pro ved .
Maxi mum permis sibl etire press ure
Ma ximu mper mis sibletire pressu refor one
tire .
Maxi mum load on onetire
Ma ximu mloa don one tire.Thi sis cal cul ate d
by divid ing the maxi mum axleloa dof one axle
by two.
PSI (pounds persquare inch)
A stand ardunitof mea sure for tire pressu re.
As pec tratio
Re lations hipbetw eentireheight and tirewidth
in per cent.
Tire press ure
Thi sis pre ssu reinsi dethe tire applying anout-
wa rdforce toeach squ are inch ofthe tire's
su rfa ce. The tirepressu reisspe cified in Al
labo utwh eelsand tires
325Wheelsand tires Z