wheel MERCEDES-BENZ GLA 2020 Service Manual

To
ensure thatthevehicle issecured against
rolling awayunintention ally:
R the electric parking brakemustbeapplied.
R the trans mission mustbeinposition 005Dand
the trans mission position displaymustshow
005D inthe multifunct iondisplay .
R the Smart Keymust beremoved fromthe
ignition lock.
R on uphill ordownhill gradients, thefront
wheels mustbeturned towards thecurb. Switching
offthe engine
Import antsafety notes G
WARNIN
G
The automatic transmission switches toneu-
tral position Nwhen youswitch offthe
engine. Thevehicle mayrollaway .There isa
risk ofan accident .
Aft erswitching offthe engine, alwaysswitch
to parking position P.Prevent theparked
vehicle fromrolling awaybyapplyi ngthe
parking brake.
Automa tictransmission X
Apply theelectric parking brake.
X All
vehicles (exceptMercedes-AMG vehi-
cles): shiftthetrans mission toposition 005D. X
Mercedes-AMG vehicles:pressbutton 0043. X
With theSmar tKey:turn theSmart Keyto
position 005Ainthe ignition lockandremove
it.
The immobilizer isactivated.
X With theStar t/Stop button:press the
Start /Stopbutton (Ypage 125).
The engine stopsandallthe indicator lamps
in the instr ument cluster goout.
If the driver's doorisclosed, thisisthe
same askey position 0047.Ifthe driver's door
is open, thisisthe same askey position 005A,
i.e. the Smart Keyhaving beenremoved.
If you switch theengine offwith thetrans mis-
sion inposition 005Eor005B, theautomatic trans-
mission shiftsto005C automatically.
With theSmar tKey: ifyou then open thedriv-
er's door orthe front -passenger dooror
remove theSmart Keyfrom theignition, the
automatic transmission shiftsto005D automati-
cally.
With theStar t/Stop button:ifyou then open
the driver's doororthe front -passenger door,
the automatic transmission shiftsto005D auto-
matically.
If you want theautomatic transmission to
remain inneutral 005C,e.g. when having the
vehicle cleaned inan automatic carwash with
a towing system:
X Vehicles
withtheStar t-Stopbutt on:
remove theStart -Stop button fromtheigni-
tion lock.
X Insert theSmart Keyinto theignition lock.
X All vehicles: switchtheignition on.
X Depress thebrake pedalandkeep it
depressed.
X Eng age neutral 005C.
X Release thebrake pedal.
X Release theelectric parking brake.
X Switch offthe ignition andleave theSmart -
Key inthe ignition lock. Elec
tric par king brake
General notes G
WARNIN
G
If children areleft unsupervised inthe vehi-
cle, they could:
R operate thevehicle's equipment 146
Par
kingDriving andparking

The
ECO display consistsof three section s,
with aninner andouter area.Thesection scor-
respond tothe following threecategories: 0043
Acce
leration (evaluation ofthe
acceleration processes):
R the outer areafillsupand the
inner arealights upgreen: moder-
ate acceleration ,especially at
higher speeds
R the outer areaempties andthe
inner areaisgray: sporty acceler-
ation 0044
Coasting
(evaluation ofall deceler-
ation processes):
R the outer areafillsupand the
inner arealights upgreen: antici-
patory driving, keeping yourdis-
tanc eand early release ofthe
accelerator. Thevehicle can
coast without useofthe brakes.
R the outer areaempties andthe
inner areaisgray: frequent heavy
braking 0087
Constant
(continuous evaluation
over theentir ejourney):
R the outer areafillsupand the
inner arealights upgreen: con-
stant speed andavoidance of
unnec essary acceleration and
deceleration
R the outer areaempties andthe
inner areaisgray: fluctuations in
speed The
three innerareas display thecurrent driv-
ing style andlight upgreen asaresult ofapar-
ticularly economicaldriving style.Dependin g
on the driving situation, uptotwo areas may
light upsimultaneously.
At the beginning ofthe journey, thethree
outer areas areempty andfillup asaresult of
econom icaldriving. Ahigher levelindicates a
more econom icaldriving style.Ifthe three
outer areas arecompletely filledatthe same
time, thedriver hasadopted themost eco-
nomical drivingstyleforthe selected settings
and prevailing conditions.TheECO display
border lightsup.
The ECO display doesnotindicate theactual
fuel consumpt ion.Theadditionally achieved range
display edunder Bonus fr.Start Bonus
fr.Start does
not indicate afixed consumpt ionreduction .
In addition todriving style,theactual con-
sumption isaffect edbyother factors,such as:
R Load
R Tire pressure
R Cold start
R Choice ofroute
R Act ive electric alconsumer s
These factorsare not included inthe ECO dis-
play.
An econom icaldriving stylespecially requires
driving atmoderate enginespeeds.
Achievin gahigher valueinthe categories
"Accelerat ion"and"Constant ":
R observe thegearshift recommendations .
R drive thevehicle indrive program Cor E
(vehicles withaDYNA MICSELECT button ).
On long journeys ataconst antspeed, e.g.on
the highway, onlytheouter areafor"const ant"
will change.
The ECO display summarizes thedriving style
from thestart ofthe journey toits completion .
Therefore, therearemore marked changes in
the outer areas atthe start ofajourney. On
longer journeys, therearefewer changes. For
more marked changes, performamanual rest
(Y page 193).
For more inform ationonthe ECO display ,see
(Y page 192). Br
aking
Import antsafety notes G
WARNIN
G
If you shift down onaslippery roadsurface
in an attempt toincrease theengine's brak-
ing effect ,the drive wheels couldlosetheir
grip. There isan increased dangerofskid-
ding andaccident s.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface.
Dow nhill gradients !
On
long andsteep gradients, youmust
reduce theload onthe brakes byshiftin gto
a lower gearingood time. Thisallows youto 150
Driving
tipsDriving andparking

take
advantag eof eng inebraking .For this
yo umu stfirst acti vate ma nua lge arshi ftin g.
Thi she lpsyo uto avoid ove rheating the
bra kes and wearing themoutexce ssivel y.
Wh enyoutake advantag eof eng inebraking ,
it is po ssi ble tha ta dri ve wheelwi llnot
rota tefor som etim e,e.g .on aslip pe ry roa d
su rfa ce. Thiscou ldcau sedama getothe
dri ve train. Thistyp eof dama geisnot cov-
ere dby the Merced es-Benz warranty.
Bri eflyde pre ssing the accelera tor pedalon
do wnh ill gra dients while the manua ldri ve pro -
gra mM istemp orarilyacti vated :the automa tic
tra nsmi ssion maysw itch tothe last acti ve
au toma ticdrive pro gramEor S.The automa tic
tra nsmi ssion mayshi ftto ahighe rge ar.Thi s
can reduce theengine'sbra king effect.
He avy and light loads G
WA
RNING
If yo ures tyo ur foo ton the brakepedal
wh ile dri vin g,the braking syste mcan over-
he at. Thisincr easesthe stop ping dista nce
and canevencau sethe braking syste mto
fa il. The reisaris kof an acc ident.
Nev erusethe brakepedalas afoo tres t.
Nev erdepre ssthe brakepedaland the
acc elera tor pedalat the same time.
! Dep
ressing the brakepedalcons tantly
res ults inexce ssive and prematurewe arto
the brakepads.
If the brakes have been subje cted toahe avy
lo ad ,do not stop thevehicleim med iatel y.
Dri veon for asho rtwh ile. Thi sal lo ws the air-
flo wto coo lthe brakes morequ ickl y.
We troad s If
yo uha ve driven foralong tim ein he avyra in
wi thou tbra king ,the rema ybe ade laye drea c-
tio nfro mthe brakes when bra king forthe first
tim e.Thi sma yal so occu raf ter the vehicleha s
be en washe dor driven throughde ep water.
Yo uha ve todepre ssthe brakepedalmor e
fir ml y.Ma inta inagre aterdi sta nce fromthe
veh iclein fro nt.
After drivin gon awe troa dor havin gthe vehi-
cle washe d,bra kefirml ywh ile pa ying atte ntion
to the trafficcond itions .Thi swi llwa rm upthe bra
kediscs ,the reb ydry ing themmor equ ickl y
and protecti ngthe magainst corr osion.
Li mite dbrak ingperf orman ceon salt-
treate droad s If
yo udri ve on salte droa ds,a laye rof saltres i-
du ema yfor mon the brakediscs and brake
pa ds.Th iscan resultin asigni ficantl ylo nge r
bra king dista nce.
R In ord erto pre vent anysaltbu ild-u p,apply
the brakes occa siona lly wh ile pa ying atte n-
tio nto the trafficcond itions .
R Ca ref ully de pre ssthe brakepedaland the
be ginning andend ofajou rney .
R Ma inta inagre aterdi sta nce tothe vehicle
ah ead.
Se rvi cing the brak es !
Th
ebra kefluidlevel maybe too low, if:
R ifthe red brakewarning lamp lights upin
the instrument cluste rand
R youhe ar awa rning tone while the engine
is running
Ob serve additio nal warning mes sage sin the
mu ltifu nctio ndisp lay.
Th ebra kefluidlevel maybe too low du eto
bra kepadwe aror leaki ng bra kelines .
Hav ethe brakesyste mche cked immed i-
ate ly.Co nsu ltaqu alifi ed speci alistwo rk-
sho pto arrange this.
! A
functio nor perfo rma nce testsho uld onl y
be car riedou ton a2-a xle dynam ome ter.If
yo uwi sh toopera tethe vehicleon such a
dy nam ome ter,plea se cons ulta qu alifi ed
sp eci alistwo rksh opinad vance. Youcou ld
othe rwise da ma gethe drive trainor the
bra kesyste m.
! As
the ESP ®
sy ste mopera tes automa ti-
cal ly,the engineand theigniti onmu stbe
sw itch edoff (theSma rtKeymu stbe inpo si-
tio n0092 or0047 inthe igniti onlock), ifthe
el ectr icpa rki ng bra keistes ted onabra king
dy nam ome ter(ma ximum 10second s).
Bra king triggered automa tically by ESP ®
ma ycau sesever eda ma getothe brakesys-
tem.
All che cks and mainte nanc ewo rkon the brake
sy ste mmu stbe car riedou tat aqu alifi ed spe-
cia list wo rksh op. Dr
ivi ng tips
151Dr ivi ng andparki ng Z

Have
brakepads insta lled and brakefluid
repl aced ataqu alifi ed spe cialist wor kshop .
If the brakesys tem hasonly beensub ject to
mode rateloads, youshou ldtest thefunctio n-
al ity ofyour bra kes atregu larinterva ls.
You canfind ades crip tion ofBrake Assist
(BAS) on(Ypage 61).
Merce des-Benz recomm endsthatyouonly
hav ebra kepads/l ining sinsta lled on your vehi -
cle whichhav ebee nap prove dfor Merce des-
Benz vehicles orwhi chcorres pondtoan
equ ivalent quality standa rd.Brake pads/
li nings whichhav enot beenap prove dfor
Merce des-Benz vehicles orwhi chare not ofan
equ ivalent quality coul daffe ctyour vehi cle's
ope ratingsafe ty.
Merce des-Benz recomm endsthatyouonly use
bra kefluidthat hasbeenspe cially ap prove d
for your vehi clebyMerce des-Benz, orwhi ch
corres pondsto an equ ivalent quality standa rd.
Brake fluidwhi chhas notbeenap prove dfor
Merce des-Benz vehicles orwhi chisnot ofan
equ ivalent quality coul daffe ctyour vehi cle's
ope ratingsafe ty.
Che cking brake linin gthic kness You
canmea surethe brea kpa d/li ning thick-
ness using atest gage.Col or-cod ing(gre enor
red) onthe test gageallow syo uto dete rmine
whe ther thebrakepad/li ning thickness isstil l
suff icient.The test gageis in the vehi cledocu -
ment wallet inthe glovebox. Front
wheel Re
ar whe el
X Bring thevehi cleand wheelsinto asui tabl e
pos itionso that youcan attach testgage
0083.
X Secur ethe vehi cleaga inst rolling away
(Y page 145 ).
X Engage park pos itionP.
X Swi tch offthe engi ne.
X Pla cetest gage0083 betw eenthewhe el's
spo kes onbra kepad/li ning 0087.
X Hold testgage0083 vertica lly on bra ke
dis c0043 and slide mea suring pin 0044onto
bra kedisc0043.
X Che ckwhi chcolo rfiel d0085 the arro won
mea suring pin 0044ispoi nting to.
Gree n:the brakepad/li ning thickness is
suff icient.
Red: thebrakepad/li ning thickness isnot
suff icient.Have thebrakepads/l ining
checked ataqu alifi ed spe cialist wor kshop .
To avo idan inaccura temea surement:
R make sureyo upos itionthe whe elssuitabl y
R do not putthe mea suring pin onareces sin
the brakedisc Dri
vin gon wetroads
Hydropl aning If
the roadsur face iswet, hydropl aning may
occur dependi ngon water level, spe edand tire
tread depth. 152
Dri
vin gtipsDri vin gand parking

G
WARNING
Flamma blemateria lsuch aslea ves, grass or
twigs mayignite ifthey come intocontact
with hotparts ofthe exhau stsystem. There
is arisk offire.
When drivingon anunpa vedroad oroff-
road ,check thevehicl eunders ideregu larly.
In particu lar,remove trappedpla ntparts or
other flamma blemateria l.Contact aqua li-
fied speci alist worksho pimmed iatelyif dam-
age isdetected.
! There
isarisk ofdama getothe vehicl eif:
R the vehicl ebecome sstuck, e.g.onahigh
curb oran unpa vedroad
R you drive toofast over anobstacl e,e.g. a
curb, aspee dbump orapothol ein the
road
R ahea vyobject strikes theunderb odyor
parts ofthe chassi s
In situa tions likethis, thebody ,the under-
body ,chassi sparts, wheelsor tires couldbe
dama gedwitho utthe dama gebeing visib le.
Comp onents damagedinthis way canunex-
pectedl yfail or,inthe case ofan accide nt,
no longer withsta ndthe loadsthey are
desi gned to.
If the underb odypanel ingisdama ged,com-
bus tible materia lssuch aslea ves, grass or
twigs cangather betweenthe underb ody
and theunderb odypanel ing.Ifthese materi-
als come incontact withhotparts ofthe
exhau stsystem, theycancatch fire.
In such situations, havethevehicl echecked
and repa iredimmed iatelyat aqua lified spe-
cial istworksho p.Ifon continuing yourjour-
ney you notice thatdrivingsafety is
impa ired,pul lover andstop thevehicl e
immed iately,pay ing attention toroad and
traffic conditions. Insuch cases, consult a
qua lified speci alist worksho p.
The vehicl eis only designed foreasi lynegotia -
ble off-road terrainandpoor roadsurfaces.
When drivingoff-road ,sub stances suchas
sand, mudandwate ror wate rmixed withoil
may getinto thebrakes .This couldresu ltin a
redu cedbraki ngeffect orintotal brake failure
and alsoin increas edwea rand tear. Thebrak-
ing chara cteristics changedepending onthe
materia lentering thebrakes .Cle anthe brakes
after drivingoff-road .If you detect aredu ced braki
ngeffect orgrindi ngnoises ,have the
brake system checked inaqua lified speci alist
worksho pas soon aspossi ble.Adapt your
drivi ngstyle tothe differ entbraki ngchara cter-
istics.
Driving off-road increasesthe likel ihoo dof
dama getothe vehicl e,whi ch, inturn, canlead
to fail ure ofthe mechani calasse mbly orsys-
tems. Adapt yourdrivi ngstyle tosui tthe ter-
rain conditions. Drivecarefu lly.Have damage
to the vehicl erectified immediatelyat aqua li-
fied speci alist worksho p.
Do not shift intotransmissi onposi tion 005C
when drivingoff-road .You couldlose control
of the vehicl eif you attempt tobrake thevehi-
cle using the service brake.Ifthe grad ientis
too steep foryou rvehicl e,drive backdownin
reverse gear.
Gene ralnote s H
Envi
ronmental note
Protection ofthe environment isof prima ry
importa nce.Treatnature withrespe ct.
Observe allprohi biting signs.
Rea dthis section carefullybefore drivingyou r
vehicl eoff-road .
Off-road drivingisonly possi blewith the
ON&OFFROAD package.
The followi ngdrivi ngsystems arespeci ally
ada pted fordrivi ngover easilynegotia bleoff-
road terrain:
R Off-road program(Y pag e170)
R Off-road ABS(Ypag e60)
R Off-road 4ETS(Ypag e64)
R Off-road ESP®
(Y pag e66)
R DSR (Downhi llSpeed Regulation)
(Y pag e169)
Observe thefollowi ngnotes:
R Stop thevehicl ebefore starting todrive
alo ng anoff-road route.Ifnecessa ry,acti-
vate theoff-road program(Y pag e132) .
R To avoi ddama gingthevehicl e,make sure
there isalw ayssuffi cient groundclea rance.
R Che ckthat items oflug gage andloadsare
stowed safelyand arewellsecure d
(Y pag e256).
R Alwa yskeep theengine running andingea r
when drivingon adow nhill gradient. Acti-
vate DSR (Ypag e169) . 154
Drivi
ngtipsDrivi ngand parking

R
Driv eslow lyand evenly,if nece ssaryat a
wa lking pace.
R Ensu retha tthe wheelsarein conta ctwith
the ground atalltime s.
R Driv ewi th extre mecareon unf amilia roff -
roa drou tes where visibility ispo or. For
sa fety reasons ,ge tou tof the vehiclefir st
and surve ythe off-roa drou te.
R Ch eck thedepth ofwa ter befor efor ding riv-
ers and streams.
R Wa tch outfor obsta cles.
R Take car ewh en turning onanuphillor
do wnh ill sl op eor wh en drivin gacr oss a
sl op e.The vehiclecou ldothe rwise tip ove r.
R Alw ayskee pthe side windo wsand thepan-
ora ma roofwi th powe rtil t/sl iding panel
clo sed durin gthe journey .
R Do not devia tefro mma rked routes.
R Do not usethe HOLD functio nwh en drivin g
off -roa d,on stee pup hillor downh ill gra di-
ents oron slip pe ry or loose surfa ces .The
HOLD functio ncanno thol dthe vehicleon
su ch surfa ces .
Ch eckli st before driv ingof f-ro ad X
En gine oille ve l:che ckthe engineoille vel
and addoilif nece ssary.
Wh endrivin gon stee pgra dients ,the engine
oi lle vel mustbe sufficie ntly high toens urea
corr ectoilsu pp lyin the vehicle.
X Whe elsand tires:che ckthe tire trea d
de pth and tirepressu re.
X Ch eck fordama geand remove anyforeign
ob jects ,e.g .sma llstone s,fro mthe wheels/
tire s.
X Re place anymissing valve cap s.
X Re place dented ordama gedwh eels.
X Rims :de nted orbent rim scan resultin a
lo ss oftire pressu reand dama gethe tire
be ad.Befo redrivin goff -roa d,che ckthe
wh eelsand replace the mifnece ssary.
Ch eckli st afte rdriv ingof f-ro ad !
If
yo ude tect dama getothe vehicleaf ter
dri vin goff -roa d,have the vehicleche cked
imm ediatel yat aqu alifi ed speci alistwo rk-
sho p.
X Dea ctivate off-roa dpro gram(Y page 132) .
X Dea ctivate DSR (Ypage 169 ). X
Clea nthe headlamps andrearlights and
che ckfor dama ge.
X Clea nthe frontand rearlicens eplate s.
X Clea nthe wheelsand tireswi th awa ter jet
and remove anyforeign objects .
X Clea nthe wheels,wh eelhou sings and the
veh icleund erside wi th awa ter jet; checkfor
any foreign objects anddama ge.
X Ch eck wheth ertwi gsorothe rpa rts ofplants
ha ve become trapped.The seincr ease the
ris kof fireand candama gefuel pipe s,bra ke
hos esorthe airbe llow sof the axlejoi nts
and propeller sha fts.
X After thetrip,exa min ewi thou tfa ilthe entire
und erca rriag e, wh eels,tire s,bra kes ,bo dy-
wo rkstru ctur e,stee ring,cha ssisand
exh aust system fordama ge.
X After drivin gin sand, mud,gra vel,wa ter or
si mil ardirty cond itions, have the followi ng
che cked andcleane d:
R bra kediscs
R wh eels
R bra kepads
R axl ejoi nts
X Ifyo ude tect strongvibratio ns after off-roa d
tra vel ,che ckfor foreign objects inthe
wh eelsand drive trainand remove themif
nece ssary.Fore ign ob jects candistu rbthe
ba lance and causevibratio ns.
Driv ingoverpo or roa dsu rfa ces place sgre ater
de ma nds onyour veh icletha ndri vin gon nor-
ma lroa ds.After drivin goff -roa d,che ckthe
veh icle. Thi sal lo ws youto detect dama ge
pro mptl yand reduce theriskof an acc ident to
yo ursel fand othe rroa dus ers .
Dri ving on san d Ob
ser vethe followi ng ruleswh en drivin gon
sa nd:
R Activ atethe off-roa dpro gram(Y page 132 ).
R Avoi dhigh eng inespee ds.
R Use theleft-ha ndstee ringwh eelpa dd le
shi fter toshi ftto alowe rge ar appro priate to
the terrain. Dr
ivi ng tips
155Dr ivi ng andparki ng Z

R
Driv equ ickl yto ove rcom ethe rolling res ist-
ance .Othe rwise the vehicle's wheelscou ld
be come stuckinloose ground .
R Driv ein the tracks ofothe rveh icles ifpo ssi -
bl e. Ma kesure tha t:
- the tire ruts arenot too deep.
- the sand issu fficie ntly firm.
- the ground clearance ofthe vehicleis su f-
fic ient.
Tire ruts andgrav elroad s !
Ch
eck thatthe ruts arenot too deep and
tha tyo ur veh icleha ssu fficie ntcle arance .
Othe rwise, your veh iclecou ldbe dama ged
or bottom outand getstu ck.
Ob ser vethe followi ng ruleswh en drivin galong
ru ts inoff -roa dterr ain or on roa dswith loose
gra vel:
R Activ atethe off-roa dpro gram(Y page 132 ).
R Avoi dhigh eng inespee ds.
R Shi ftto alowe rge ar using the left-ha nd
stee ringwh eelpa dd leshi fter .
R Driv eslow ly.
R Wh ere ruts aretoo deep,dri ve with the
wh eelsof one side on the cente rgra ssy
ar ea ,if po ssi ble. Trave
ling uphi ll
App roac h/depa rture angle G
WA
RNING
If yo udri ve on astee pincl ine atan ang leor
tur nwh en drivin gon anincl ine,the vehicle
cou ldslip side wa ys,tip and rollover .The reis
a ris kof an acc ident.
Alw aysdri ve on astee pincl ine inthe line of
fa ll(s tra ight up ordown) and donot turnthe
veh icle.
R Ob ser vethe warnings foroff-roa ddri vin g
(Y page 153 ).
R Fol low the line offallwh en drivin gon slop es
and steepincl ines.
R Befo redrivin gon extre meuphilland down-
hi llgra dients ,sel ect the off-roa dpro gram
(Y page 132 ).
R Driv eslow ly. R
Accel erategently and makesure tha tthe
wh eelsaregri pping .
R Avoi dhigh eng inespee ds,exce ptwh en driv-
ing onsandy and muddyrou tes with high
dri vin gres istance .
R Use theleft-ha ndstee ringwh eelpa dd le
shi fter toshi ftto alowe rge ar appro priate to
the gradient.
R Use theleft-ha ndstee ringwh eelpa dd le
shi fter toshi ftinto alowe rge ar ingo od time
on long and steepdo wnh ill gra dients .
Hil lsta rtas sist willai d yo uwh en pulling away
on ahill. For furthe rinfo rma tionab ou thi ll
sta rtas sist, see (Ypage 128 ).
Do not shiftinto transmi ssion positio n005C
wh en drivin goff -roa d.Yo ucou ldlose contro l
of the vehicleif yo uatte mpt tobra kethe vehi-
cle using the servicebra ke. Ifthe gradient is
too stee pfor your veh icle, dri ve back down in
rev ers ege ar.
Alw aysob ser vethe appro ach /de partu reang le
va lues (Y page 342 ).
Maxi mum gradient-c limbi ngcapabi lity Alw
aysob ser vethe maxim um gradient climb-
ing ability values (Y page 342 ).
Hil ltops Wh
endrivin gup anuphillgra dient, slig htl y
red uce pressu reon the accelera tor imm edi-
ate lybe for erea ching the browof the hill.
Ma keuseof the vehicle's ownimp etusto
tra vel ove rthe brow.
Thi ssty leof dri vin gpre vents :
R the vehiclefro mlifting offthe ground onthe
bro wof ahill
R the vehiclefro mtra vel ing too quickl ydo wn
the othe rsi de
Dri ving dow nhill R
Driv eslow ly.
R Do not drive atan ang ledo wn stee p
incl ines.Stee rinto theline offalland drive
wi th the frontwh eelsalig ned straight. Oth-
erw ise, the vehiclecou ldslip side wa ys,tip
and rollover .
R Shi ftto alowe rge ar using the left-ha nd
stee ringwh eelpa dd leshi fter befor etackl ing
stee pdo wnh ill gra dients . 15
6 Dr
ivi ng tipsDrivi ng andparki ng

R
Activa teDSR. Ifthi sis not sufficie nt, bra ke
gen tly.Whe ndo ing so,makesure tha tthe
veh icleis fac ing inthe directi onofthe line
of fall.
R Ch eck thatthe brakes arewo rking norma lly
afte ra long downh ill stre tch.
Off-r oadABS isacti vated when the off-r oad
pro gramissel ecte d.
At spe edsbe low 18 mph (30km/h ),the front
wh eelslock cyc lical lydu ring braking .The dig-
gi ng-i neffe ctach ieved inthe proces sred uce s
the stop ping dista nce onoff-r oadterra in.The
stee rability of the vehicleis consi derably
red uce difthe wheelslock. Dri
ving sys tems Crui
secontro l
Ge neral notes Cr
uise contro lma inta insaconsta ntroa d
spe edfor you. Itbra kes automa tically in ord er
to avoid exce eding the setspeed.On long and
stee pdo wnh ill gra dients, especially ifthe vehi-
cle islade n,youmu stsel ect alow gea rin
goo dtime .Yo unee dto shi ftma nua lly us ing
the stee ring wheelpa dd leshi fters before hand.
By doing so,youwi llma keuseof the braking
effe ctof the engine.Thi srel ieves theload on
the brakesystem andprevents thebrakes
from overheating and wearing too quickl y.
Whe nthe engineisrunning ,yo ucan usethe
cru ise contro lle ver tolimit the speedtoany
spe edbetwe en20 mph (30km/h )and the
tech nically pe rmi tted maximu mspe edofthe
veh icle.
Use cruise contro lif roa dand trafficcond i-
tio ns ma keitap pro priate toma inta inastea dy
spe edfor apro longe dpe rio d.
The speedindicated inthe speedome termay
di ffer slig htl yfrom thespeedstor ed.
Impo rtant safetynotes If
yo ufai lto adaptyo ur driving style,cru ise
contro lcan neither reduce theriskof an acci -
de nt nor override the laws ofphy sics. Cruise
contro lcanno ttake intoacco unttheroad,
traf ficand weath ercond itions. Cruise contro l
is onl yan aid. Yo uar eres ponsi ble for the dis-
tance tothe vehiclein front, forveh iclespe ed, for
braking ingoo dtime andforstaying inyour
la ne.
Do not usecru ise contro l:
R in roa dand trafficcond itions which donot
al lo w yo uto ma inta inaconsta ntspe ed,e.g .
in hea vytraf ficoron windi ng roa ds
R on slip pe ry roa dsu rfa ces .Bra king oracce l-
era ting couldcau sethe drive wheelsto lose
trac tionand thevehiclecou ldthen skid
R in po or vis ibility ,e.g .du eto fog ,hea vyrain
or snow
If ther eis acha nge ofdri ver s,ad vis ethe new
dri ver ofthe speedstor ed.
Crui secontro lle ve r 0043
Activa tesorincr eases speed
0044 Activa tesorred uce sspe ed
0087 Dea ctiva tescruise contro l
0085 Activa tesatthe current speedorlast
stor edspe ed
Whe nyo uacti vate cru ise contro l,the stor ed
spe edissho wninthe multifu nctio ndispl ayfor
fiv esec ond s.
Ac tiv atio nco ndi tions To
acti vate cru ise contro l,allof the followi ng
acti vatio ncond itions mustbe fulfilled :
R the electri cpa rking brakemu stbe released .
R ESP ®
mu stbe acti ve,butnot intervening .
Sto ring,main tainingand calling up a
spe ed Sto
ringand main tainingthe curren t
spe ed
Yo ucan storethe current speedifyo uar e
dri ving faster than20 mph (30km/h ). Dri
ving sys tems
157Dr ivi ng andparki ng Z

!
When
Active Distance AssistDISTRONIC
or the HOLD function isactivated, thevehi-
cle brakes automaticall yin certain situa-
tions.
To avoid damage tothe vehicle, deactivate
Act ive Distance AssistDISTRONIC andthe
HOLD function inthe followi ngorsimila rsit-
uations:
R when towing thevehicle
R in the carwash
Act ive Distance AssistDISTRONIC canneither
reduce therisk ofan accident ifyou failto
adap tyour driving style,noroverride thelaws
of physics. Active Distance AssistDISTRONIC
cannot takeintoaccount road,weather ortraf-
fic conditions. Active Distance Assist
DISTRONIC isonly anaid. You areresponsible
for the distance tothe vehicle infront ,for
vehicle speed,forbraking ingood timeandfor
staying inyour lane.
Do not use Active Distance AssistDISTRONIC:
R In road andtraffic conditions whichdonot
allow youtomaintain aconst antspeed, e.g.
in heavy traffic oron winding roads
R On slippe ryroad surfaces. Brakingoraccel-
erating couldcause thedrive wheels tolose
traction andthevehicle couldthenskid
R In poor visibil ity,e.g. due tofog, heavy rain
or snow
Act ive Distance AssistDISTRONIC maynot
detect narrow vehicles drivinginfront ,e.g.
motorcycles, orvehicles drivinginastaggered
formation.
In particular, thedetection ofobstacles canbe
impaired if:
R There isdirt onthe sensors oranything else
covering thesensors
R There issnow orheavy rain
R There isinterferenc eby other radarsources
R There arestrong radarreflections, forexam-
ple inparking garages
If Act ive Distance AssistDISTRONIC nolonger
detects avehicle infront ,Distance Pilot
DISTRONIC mayunexpectedly accelerateto
the speed stored. This
speed may:
R Be too high ifyou aredriving inaturning
lane oran exit lane
R Be sohigh when driving inthe right-hand
lane thatyouovertake vehiclesinthe left-
hand lane
R Be sohigh inthe left lane thatyoupass
vehicles drivingonthe right
If there isachange ofdrivers, advisethenew
driver ofthe speed stored.
Cruise control lever 0043
Tostore thecurrent speedorahigher
speed
0044 Tostore thecurrent speedoralower
speed
0087 Todeactivate Active Distance Assist
DISTRONIC
0085 Tostore thecurrent speedorcalls upthe
last stored speed
0083 Toset aspecified minimum distance
Activating ActiveDistance Assist
DISTRONIC Activation
conditions
! When
Active Distance AssistDISTRONIC
or the HOLD function isactivated, thevehi-
cle brakes automaticall yin certain situa-
tions.
To avoid damage tothe vehicle, deactivate
Act ive Distance AssistDISTRONIC andthe
HOLD function inthe followi ngorsimila rsit-
uations:
R when towing thevehicle
R in the carwash 160
Driving
systemsDriving andparking

Canc
elingst art -off assis t
X Remo veyour footfr om theacc eler ator
pedal.
X React ivateES P®
. RACE
START (Mer cedes -AMGvehi -
cles)
Imp ortant safety notes i
RACE
START must notbe used onnorm al
road s.RACE START must onlybe act ivat ed
and used ondedic atedroad circuit s,out side
of public roaduse.
i RACE
START ison lyavailab lein
Mer cedes‑AM Gveh icles. G
WAR
NING
If you useRACE START ,ind ivid ual tires may
st art tospin andtheveh icle could skid.
De pen dingon thesele cted ESP®
mod e,
th ere isan increas edriskof skiddin gand
havi nganacc iden t.Mak esure that no per -
son s,anim alsorobst aclesare within range
of theveh icle.
RACE START enables optimal acceler ation
fr om ast and ingstart .For this, asuit ably high-
grip road surface isreq uired andtheveh icle
and tires must beingood workingorder.
i Obse
rveth esafe tyno teson driv ingsafe ty
syst ems (Ypage 60).
Be sure toread thesafe tyno tesand infor-
mat iononESP®
(Y page 63).
Cond itions foractivation You
canactivat eRACE START if:
R thedoor s,hood andthetrunk lidare closed.
R theen gin eis run ningand thetrans mis sion ,
all- wheel driveclut chand theen gin eare at
oper atingte mper ature.
R thest eer ing wheel isin thest raigh t-ahead
posi tion.
R theveh icle isstatio naryand thebrak epedal
is depr essed(lef tfoo t).
R thetrans mis sion isin posi tion005B.
R driv epro gram S,S+ orRACE issele cted
(Y page 133) Activ
ating RACE START X
De pre ssthebrak epedal withyour leftfoot
and keep itdepr essed.
X Pull and hold bothsteer ing wheel paddle
shif ters.
X The RACESTA RTConfirm:Paddle UP RAC
ESTA RTConfirm:Paddle UP
Can cel:Pad dle DOWN Can
cel:Pad dle DOWNmes sage appear sin
th emult ifunction displ ay.
X Release bothsteer ing wheel paddle shifters.
i If
th eact ivat ion condi tions are nolonger
fulf illed, RACE START iscan celed. The
RAC ESTA RTNot PossibleSee Opera‐ RAC
ESTA RTNot PossibleSee Opera‐
tor 'sManual tor
'sManual message appear sin themul-
tif unc tiondispl ay.
X To cancel :pull theleft steer ing wheel pad-
dle shifter(Y page 140).
or X To confi rm:pull therigh tst eer ing wheel
paddle shifter(Y page 140).
The RACESTA RTAvailable Depress RAC
ESTA RTAvailable Depress
gas pedal gas
pedalmes sage appear sin themult i-
fun ction displ ay.
i If
you donotdepr esstheacc eler atorpedal
wit hin afew seconds, RACE START iscan -
cel ed. The mult ifunction displ aysho wsthe
RAC ESTA RTCanceled RAC
ESTA RTCanceledmes sage.
X Fully depresstheacc eler atorpedal.
The engin espee dis inc reas ed.
The RACESTA RTReleasebra keto RAC
ESTA RTReleasebra keto
sta rt sta
rtmes sage appear sin themult ifunction
displ ay.
i If
you donotrele ase thebrak epedal
wit hin asho rttim e,RACE START willbecan -
cel ed. The mult ifunction displ aysho wsthe
RAC ESTA RTCanceled RAC
ESTA RTCanceledmes sage.
X Tak eyour footoff thebrak e,but keep the
acc eler atorpedal depressed.
The vehicle pulls away atmax imum acceler -
atio n.
The RACESTA RTActive RAC
ESTA RTActive message appear s
in themult ifunction displ ay.
RACE START isdeac tivate dwhen theveh icle
reac hesaspee dof appr oximat ely50km/h.
RACE START isdeac tivate dimm ediat elyifyou
rele ase theacc eler atorpedal duringRACE
ST ART orifany oftheact ivat ion condi tions are
no longer fulfilled. TheRACESTA RTNot Pos‐ RAC
ESTA RTNot Pos‐
sib leSee Operator'sMan ual sib
leSee Operator'sMan ual orRAC E RAC
E
STA RTCanceled STA
RTCanceledmes sage appear sin themul-
tif unc tiondispl ay. Driv
ingsyst ems
167Drivingand parking Z