2020 MERCEDES-BENZ GLA brakes

Transmission
positiondisplay
(DIRECT SELECT lever) ...................1 34
Transmi ssionposi tions .................. 137
Automatic transmissionemer-
gen cymode ....................................... 142 B
Back button ....................................... 244
Backup lamp
Displ aymessa ge....... ..................... 216
Bag hook....... ....... ..............................256
BAS (Brake AssistSyste m)....... ..........61
Basic settings
see Settings
Battery (SmartKe y)
Che cking .......................................... 72
Importa ntsafe tynotes .................... 72
Rep lacing ......................................... 72
Battery (vehicle)
Cha rging ........................................ 295
Displ aymessa ge....... ..................... 219
Importa ntsafe tynotes .................. 293
Ju mp starting ................................. 296
Rep lacing .......................................296
Belt
see Seat belts
Belt warni ng....... .................................. 44
Blin dSpot Assist
Activating/d eactivating (on-
boa rdcompu ter)....... ..................... 198
Displ aymessa ge....... ..................... 221
Notes/fu nction..............................185
Blow er
see Clima tecontrol
Blueto oth®
Searchi ngfor amobi lephone ........247
Searchi ngfor amobi lephone
(de vice mana ger)........................... 248
see also Digita lOpera tor'sMan-
ua l....... ...........................................243
Tel epho ny....... ...............................247
Brake AssistSyste m
see BAS (Brake AssistSystem)
Brake assistanc e
see BAS (Brake AssistSystem)
Brake fluid
Displ aymessa ge....... ..................... 210 Notes
.............................................338
Brake forcedistributi on
see EBD (electronic brakeforce
dis tribu tion)
Brake HOLDfunction
Gene ralnotes ................................ 165
Brake lamp
Rep lacing bulbs....... ......................108
Brake lamps
Displ aymessa ge....... ..................... 216
Brakes
ABS ..................................................60
BAS <0011001100110011001100110011001100110011001100110011001100110011
001100110011[ <0011001100110011001100110011001100110011001100110011001100110011
001100110011[............61
Brake fluid(note s)<0011001100110011001100110011001100110011001100110011001100110011
001100110011[ ......338
Disp laymess age<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 205
EBD <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011[ 67
Hil lsta rtas sis t<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011[ 128
HOLD function<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011[ 165
Imp orta ntsafety notes <0011001100110011001100110011001100110011001100110011001100110011
00110011[ 150
Ma inte nance <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 151
Pa rking brake<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011[ 146
Ri ding tips<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 150
Situ ation-de pendent braking
as sis tance <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 63
Wa rning lamp <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 233
Breakd ownass istanc e
Whe rewillIfind ...?<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011[ 287
see Flattire
see Tow-star ting
see Towingaway
Brig htne sscontro l(i nstru ment
cl uste rlighti ng)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 32
Button son the steering wheel......... 189 C
Cal ling up amalfu nctio n
see Disp laymes sages
Car
see Vehicle
Care
Carwa sh <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 280
Ca rpe ts<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 286
Disp lay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 284
Exha ustpi pe <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 284
Exteri orlights <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011[ 283
Ge aror sel ector lever <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011[ 285
Interi or<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 2846
In
dex

the
stop ping dista nce onoff-roa dterr ain. Thi s
li mi ts ste ering cap ability . BAS
(Brak eAs sist Sys tem)
Ge neral info rmatio n BAS
opera tes ineme rgency braking situa tions.
If yo ude pre ssthe brakepedalqu ickl y,BAS
au toma tically bo osts thebraking force, thus
sho rteni ngthe stop ping dista nce.
Impo rtant safety notes i
Ob
serve the "Impo rtantsafety note s"sec-
tio n(Y page 60) . G
WA
RNING
If BAS isma lfunctio ning,the braking dis-
tance inan eme rgency braking situa tionis
incr eased. The reisaris kof an acc ident.
In an eme rgency braking situa tion,de pre ss
the brakepedalwi th fullfor ce. ABS prevents
the wheelsfro mlocking .
Braki ng X
Kee pthe brakepedalfir ml yde pre sse dunti l
the eme rgency braking situa tionis ove r.
ABS prevents thewheelsfro mlocking .
The brakes willfu nctio nas usua lonce you
rel ease the brakepedal.BAS isde acti vated . Ac
tiv eBrake Assist
Ge neral info rmatio n i
Ob
serve the "Impo rtantsafety note s"sec-
tio n(Y page 60).
Activ eBra keAssi stcons ists of adi sta nce
wa rning functio nwi th an autono mousbra king
fu nctio nand asitua tion-de pende ntbra ke
bo osti ngeffect.
Activ eBra keAssi stcan helpyouto minim ize
the riskof acol lisi on with the vehicletra vel ing
in fro ntor red uce theeffects ofsuch acol li-
si on.
If Activ eBra keAssi stdetects thatthe reisa
ris kof col lisi on, youwi llbe warned visually
and acoustica lly. Ifyo udo not reactto the vis- ua
lcol lisi on warning orthe warning tone ,
au tono mousbra king canbeinitia ted incri tica l
si tua tions. Ifyo uap plythe brakeyourse lfin a
cri tica lsi tua tion,Activ eBra keAssi stsupp orts
yo uwi th asitua tion-de pende ntbra keboosti ng
eff ect.
Impo rtant safety notes Dete
ctionof hazar dous situa tions can bepar-
ticu larly impaire dif:
R Th ere isdirt on the senso rsor any thing else
cove ringthe senso rs
R Th ere issno wor heavyra in
R Th ere isinte rferenc eby othe rra da rsou rces
R Th ere arestro ngrada rref lectio ns,forexa m-
pl e in pa rki ng garage s
R Anar row vehicleis tra vel ing infro nt, e.g.a
moto rbike
R Aveh icleis tra vel ing infro nton adi ffe rent
li ne
R Yo uar edri vin ganew vehicleor servi cing on
the Activ eBra keAssi stsyste mhasjus t
be en car riedou t
Ob serve the impo rta ntsafety note sin the
"Br eaking -innote s"sectio n(Y page 124) .
Fol lowi ng dama getothe frontend ofthe vehi-
cle ,ha ve the confi guratio nand opera tionof
the rada rse nso rche cked ataqu alifi ed spe-
cia list wo rksh op.Th isalso appliesto col lisi ons
at low sp ee ds where novisible da ma getothe
fro ntofthe vehicleis ap parent.
Ac tiv atin g/dea ctivati ng Activ
eBra keAssi stisacti veafter eve ryigni-
tio ncy cle .
Yo ucan activate or deacti vate Activ eBra ke
Assi st(Y page 197 )in the on-b oard com-
pu ter. Whendeacti vated ,the dista nce warning
fu nctio nand theautono mousbra king functio n
ar ealso deacti vated .
If Activ eBra keAssi stisde acti vated ,the 00D4
sy mbo lap pe arsin the assista nce graphicdis-
pl ay .
If yo uha ve acti vated DSR, ActiveBra keAssi st
is de acti vated .For furthe rinf orm ation onDSR,
se e(Y page 169 ). Dr
ivi ng safet ysy stem s
61Safet y Z

Situat
ion-dependent brakingassis-
tance General
informat ion
i Observe
the"Important safetynotes" sec-
tion (Ypage 60).
With thehelp ofthe radar sensor system,
Act ive Brake Assist candetect obstacles that
are inthe path ofyour vehicle foranexten ded
period oftime.
If Act ive Brake Assist detectsa risk ofcollision
with thevehicle infront ,it calculates thebrake
pressure necessary toavoid acollision. Ifyou
apply thebrakes forcefully, <0056004C0057005800440057004C005200510010004700480053004800510047
0010[
ent braking assistance adaptstothe situation
and automatically increasesthebrake pres-
sure toadegree appropriate tothe traffic sit-
uation.
Situation- dependent brakingassistance pro-
vides braking assistance inhazardous situa-
tions atspeeds above4mph (7km/h). Ituses
radar sensor technology toassess thetraffic
situation.
Situation- dependent brakingassistance is
capable ofreacting tomoving objectsthat
have already beendetect edassuch atleast
once overtheperiod ofobservation, upto
vehicle speeds ofaround 155mph
(250 km/h).
Situation- dependent brakingassistance can
also detect stationary objects,up tovehicle
speeds ofaround 44mph (70km/h).
X Keep thebrake pedaldepressed untilthe
emergency brakingsituation isover.
ABS prevent sthe wheels fromlocking.
The brakes willwork normally againif:
R you release thebrake pedal
R there isno longer anydanger ofacollision
R no obstacle isdetect edinfront ofyour vehi-
cle
Situation- dependent brakingassistance isthen
deactivated.
Import antsafety notes
i Observe
the"Important safetynotes" sec-
tion fordriving safetysystems (Ypage 60). G
WARNING
Act ive Brake Assist doesnotreact:
R to persons, bicycles, motorcyclesorani-
mals
R to approaching vehicles
R to cross traffic
R on bends
As aresult, Active Brake Assist cannot inter-
vene inall critical situations. Thereisarisk
of an accident.
Always paycareful attentiontothe traffic
situation andbeprepared tobrake. G
WARNING
Adaptive BrakeAssist cannot alwaysclearly
identify objectsand complex trafficsitua-
tions.
In such cases, Adaptive BrakeAssist might:
R interv eneunnecessarily
R not interv ene
There isarisk ofan accident.
Always paycareful attentiontothe traffic
situation andbeready tobrake. Terminate
the interv ention inanon- critical drivingsit-
uation.
Due tothe nature ofthe system, complex but
non- critical drivingcondition smay alsocause
Act ive Brake Assist tointerv ene.
Even ifAct ive Brake Assist isnot availa bledue
to amalfunction inthe radar sensor system,
the brake system isstill availa blewith full
brake boosting effectandBAS. ESP
®
(Ele ctronic Stability Program)
General notes i
Observe
the"Important safetynotes" sec-
tion (Ypage 60).
ESP ®
monitor sdriving stability andtract ion,
i.e. power transm issionbetween thetires and
the road surface.
If ESP ®
detect sthat thevehicle isdeviating
from thedirection desiredbythe driver, oneor
more wheels arebraked tostabilize thevehi- Driving
safetysystems
63Safety Z

cle
.The engineoutpu tis also mod ified tokeep
the vehi cleonthe desiredcou rse within physi-
cal limits. ESP®
ass ists thedriver whe npu lling
aw ay on wetor slippe ryroa ds. ESP ®
can also
stab ilize the vehi cleduring braking.
ETS/ 4ETS (Electro nicTractio nSys tem) i
Obs
erve the"Important safety notes" sec-
tion (Ypage 60).
ETS tracti oncontrol ispa rtof ESP ®
.On vehi -
cle swi th 4MATIC ,4ETS ispa rtof ESP ®
.
Tra ction control brakes thedrive whe elsindi -
vid ually if they spin.Thi sena bles youto pull
aw ay and acce lerate onslippe rysurface s,for
exa mpl eif the roadsu rface isslippe ryon one
sid e.In addition, more drive torqu eis transf er-
red tothe whe elor whe elswi th tracti on.
Tra ction control remainsacti ve,evenif yo u
dea ctiva teESP ®
.
Off-ro ad4ETS (Electro nicTractio nSys -
tem) A
4ETS system specificallysu ited tooff-ro ad
terra inisacti vate dau toma tically once theoff-
roa dpro gramisacti vate d(Y page 170 ).
Impo rtant safetynotes i
Obs
erve the"Important safety notes" sec-
tion (Ypage 60). G
WARNI
NG
If ESP ®
is mal functi oning,ESP ®
is una ble to
stab ilize the vehi cle.Addi tiona lly, furth er
dri ving safety systems aredeactiva ted.This
incre asesthe riskof skid ding and anacci -
dent.
Drive oncare fully.Have ESP®
checke dat a
qu alifi ed spe cialist wo rksho p.
Vehi cles without 4MATIC:whe ntowi ngyour
vehi clewith the front axlerai sed ,it is imp or-
tant thatyouobs erve thenotes onESP ®
(Y page 300 ).
If the 00BB ESP®
OFF warning lamp lights up
continu ously ,ESP ®
is dea ctiva ted.
If the 00E5 ESP®
wa rning lamp and the00BB
wa rning lamp are lit continu ously ,ESP ®
is not
ava ilab ledu eto amal functi on. Obs
erve theinforma tion onwarning lamps
(Y page 236) anddispl aymess ages whi ch
may besho wninthe instru ment cluster
(Y page 205).
Only usewhe elswi th the recom mendedtire
size s.Only thenwillESP ®
functi onpro perly.
Charac teristicsof ESP® Gen
eral informatio n
If the 00E5 ESP®
wa rning lamp goesou t
bef ore beginning thejour ney,ESP ®
is au to-
mati callyacti ve.
If ESP ®
interv enes,the 00E5 ESP®
wa rning
la mp flashe sin the instru ment cluster.
If ESP ®
interv enes:
X Do not deactiva teESP ®
und erany circu m-
stance s.
X Only depress theacce lerato rped alas far as
neces sarywhe npu lling away.
X Ada ptyour driving styleto suitthe prevailing
roa dand weathe rcondi tions.
EC Ostart/s topfunc tion
The ECO start/stop functionswi tches the
engi neoff automa tically whe nthe vehi cle
stop smovi ng.The enginestar tsautoma tically
whe nthe driver wants topullaw ay again.
ESP ®
rema insinits pre viouslysel ected status.
Exa mple :if ESP ®
wa sdea ctiva tedbefore the
engi newasswi tched off,ESP ®
rema insdea cti-
vate dwhe nthe engi neisswi tched onagain.
De acti vatin g/acti vatin gES P®
(e xc ept
Merc edes‑AMG vehicle s) Impo
rtant safetynotes
i Obs
erve the"Important safety notes" sec-
tion (Ypage 60).
You canselect betw eenthefollow ing state sof
ESP ®
:
R ESP ®
is acti vate d.
R ESP ®
is dea ctiva ted. G
WARNI
NG
If yo udea ctiva teESP ®
,ESP ®
no long ersta-
bi lizes thevehi cle.The reisan incre asedris k
of skid ding and anacci dent. 64
Dri
vin gsafe tysys temsSafe ty

Trans
mission pos ition s 0045 Park
position
Thi spre vents thevehiclefro mrol l-
ing away when stop ped.
Onl yshi ftthe transmi ssion toposi-
tio n005D when the vehicleis sta tion-
ar y. The parkin glock sho uld not be
us ed asabra kewhen parkin g.
Alw aysap plythe electro nicparkin g
bra keinad ditio nto the parkin glock
in ord erto sec urethe vehicle.
In the eventofama lfunctio nof the
veh icle's electro nics,the transmi s-
si on maylo ck inpo sitio n005D. Have
the vehicleelectro nicschecked
imm ediatel yat aqu alifi ed speci alist
wo rksh op.
Pa rk positio n005D isau toma tically
eng aged if:
R yousw itch offthe engineusing
the Sma rtKeyand remove the
Sma rtKey
R yousw itch offthe engineusing
the Sma rtKeyor using the Star t/
Stop button andopen the driver 's
do or orfro nt-pa ssenge rdo or
R youop en the driver 'sdo or wh en
the vehicleis sta tionar yor wh en
dri vin gat aver ylo w sp ee dand
the transmi ssion isin po sitio n005B
or 005E 0046 Rev
ersege ar
Onl yshi ftthe transmi ssion into
po sitio n005E when the vehicleis sta -
tio nar y. 0044 Neu
tral
Do not shiftthe transmi ssion to005C
wh ile dri vin g.The automa tictrans-
mis sion cou ldothe rwise be dam-
ag ed .
No powe ris tra nsmi ttedfromthe
eng inetothe drive wheels.
Re leas ing the brakes willal lo w yo u
to mov ethe vehiclefre ely, e.g .to
pu sh itor tow it.
If ESP ®
is de acti vated orfaulty: shift
the transmi ssion topositio n005C if
the vehicleis in da nge rof ski dding ,
e.g .on icy roads.
If yo usw itch theengineoffwith the
tra nsmi ssion inpo sitio n005E or005B,
the automa tictransmi ssion shifts to
005C automa tically.
! Co
asting inneu tral005C may
cau sedama getothe drive train. 003A Dri
ve
The automa tictransmi ssion
cha nge sge ar automa tically. All
for wa rdgearsar eav ailabl e. Dri
ving tips
Ch ang ingge ar The
automa tictransmi ssion shifts thro ughthe
ind ividu alge arsau toma tically wh en itis in
tra nsmi ssion positio n005B. Thisau toma ticgear
shi fting behavio ris de term inedby :
R the selecte ddri ve pro gram
R the positio nof the accelera tor pedal
R the roadsp ee d
Ac celerator pedalpos ition Yo
ur sty leof dri vin ginfl uences howtheauto-
ma tic transmi ssion shifts gear:
R little thro ttle:ea rly upshi fts
R mor ethro ttle:la te upshi fts Au
tomati ctrans mission
137Dr ivi ng andparki ng Z

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