ECU MERCEDES-BENZ GLA 2020 Owner's Guide

Add
itiona lly, chi ldren couldset the vehiclein
moti onif,for exa mpl e,they :
R rel ease the parking brake
R shi ftthe automa tictrans mission outof
pa rk positio n005D
R sta rtthe engine
The reisaris kof an acci dent and injury.
Nev erleav echi ldren orani ma lsuna ttend ed
in the vehicle.
Whe nleav ing the vehicle, alwa ystake the
Sma rtKeywi th youand lock the vehicle. Thi s
al so appliesfor the DigitalVeh icleKey ifthe
"Di gital Veh icleKey "fu nctio nis acti vated via
Mer cedesme conne ct.
The functio nof the electri cpa rking brakeis
de pende nton the on-b oard vol tag e.Ifthe on-
bo ardvol tag eis low or ther eis ama lfunctio n
in the system ,it ma ynot bepossi ble to apply
the released parking brake.
X Ifthi sis the case,onl ypa rk the vehicleon
le vel ground andsecureit to pre vent itrol l-
ing away.
X Shi ftthe automa tictrans mission topositio n
005D.
It ma ynot bepossi ble to release an applied
pa rking brakeifthe on-b oard vol tag eis low or
ther eis ama lfunctio nin the system .Co ntact a
qu alifi ed spe cialist wo rksh op.
The electri cpa rking brakeperfor ms afu nctio n
test atreg ular inte rvalswh ile the engineis
sw itch edoff. The sounds thatcan behea rd
wh ile thi sis occu rring arenorma l.
Appl ying orreleas ingmanua lly X
To apply :pu sh handl e0043.
Whe nthe electri cpa rking brakeisap plied,
the red 0049 (USAonl y)or 0024 (Cana da
onl y)ind icator lamp lights upinthe instru-
ment cluster .
The electri cpa rking brakecan also be
ap plied wh en the Sma rtKeyis rem oved.
X To releas e:pullha ndl e0043.
The red0049 (USAonl y)or 0024 (Cana da
onl y)ind icator lamp inthe instrum entclus-
ter goe sou t.
The electri cpa rking brakecan onlybe
rel eased :
R ifthe Sma rtKeyis in po sitio n0047 or0048 in
the igniti onlock (Ypage 125 )or
R ifthe igniti onwassw itch edon using the
Star t/Stop button
Appl ying auto matic ally The
electri cpa rking brakeisau toma tically
ap plied wh en the trans mission isin po sitio n
005D and :
R the engineissw itch edoff or
R the driver isnot wearing asea tbe ltand the
dri ver 'sdo or isop ene d
To pre vent theelectri cpa rking brakefrom
be ing automa tically ap plied, pu llha ndl e0043.
The electri cpa rking brakeisalso applied au to-
ma tica lly if:
R Active Distance AssistDISTR ONICbri ngs
the vehicleto asta ndsti llor
R The HOLD functio nis kee ping the vehicle
sta tionar y
R Active Parking Assistiskee ping the vehicle
sta tionar y
In additio n,at leas tone ofthe followi ng cond i-
tio ns mu stbe fulfilled :
R The engineissw itch edoff
R The driver isnot wearing asea tbe ltand the
dri ver 'sdo or isop ene d
R The reisasy stem malfunctio n
R The powe rsu pp lyisins uffici ent
R The vehicleis sta tionar yfor along perio dof
time
The red0049 (USAonl y)or 0024 (Cana da
onl y)ind icator lamp inthe instrum entcluster
goe sou t. Parki
ng
147Dr 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

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

X
Accel eratethe vehicleto the desired speed.
X Bri eflypre ssthe cruise contro lle ver up0043
or down 0044.
X Re move your foo tfrom theacce lera tor
pe dal.
Cr uise contro lis acti vated .The vehicleau to-
ma tica lly ma inta insthe stor edspe ed.
i Cr
uise contro lma ybe una ble to ma inta in
the stor edspe edon uphillgra dients. The
stor edspe edisres um edwhen the gradient
eve nsout.Cr uise contro lma inta insthe
stor edspe edon downh ill gra dients byauto-
ma tica lly ap plying the brakes.
Sto ringthe curren tspe edorcal ling up
the laststo red speed G
WA
RNING
If yo ucal lup the stor edspe edand itdiffer s
from thecurrent speed,the vehicleacce ler-
ate sor decel era tes. Ifyo udo not know the
stor edspe ed,the vehiclecou ldacce lera te
or bra keune xpected ly.The reisaris kof an
acci dent.
Pa yatte ntionto the roadand trafficcond i-
tio ns before calling up the stor edspe ed.If
yo udo not know thestor edspe ed,stor ethe
de sired speedagain.
X Bri eflypu llthe cruise contro lle ver towards
yo u0085.
X Re move your foo tfrom theacce lera tor
pe dal.
The first time cruise contro lis acti vated ,it
stor esthe current speedorreg ulate sthe
spe edofthe vehicleto the previouslystor ed
spe ed.
Se ttin gaspe ed Kee
pin mind thatit ma ytake abri efmome nt
unti lthe vehicleha sacce lera ted orbra ked to
the speedset.
X To
adjust thesetspe edin5mph incre -
men ts(10km/h incre men ts):bri efly
pre ssthe cruise contro lle ver up0043 past the
pre ssu repoint for ahighe rspe ed,or
do wn 0044for alowe rspe ed.
X To
adjust thesetspe edin1mph incre -
men ts(1 km/h incre men ts):bri eflypre ss
the cruise contro lle ver up0043 tothe pres- su
re point for ahighe rspe ed,or down 0044
for alowe rspe ed.
i Cr
uise contro lis not deacti vated ifyo u
de pre ssthe acce lera tor pedal.For exampl e,
if yo uacce lera te bri eflyto ove rtake ,cru ise
contro lad jus tsthe vehicle's spe edtothe
la st spe edstor edafte ryo uha ve fini she d
ove rtaki ng.
De acti vati ngcrui secontro l The
rearesev eralwa ystodeacti vate cru ise
contro l:
X Bri eflypre ssthe cruise contro lle ver for-
wa rds 0087.
or X Bra ke.
Cr uise contro lis au toma tically de acti vated if:
R the vehicleis sec ured with the electri cpa rk-
ing brake
R youar edri ving atless tha n20 mph
(30 km/h )
R ESP ®
inte rvenes oryoude acti vate ESP ®
R youshi ftthe trans mission topositio n005C
wh ile dri ving
If cru ise contro lis de acti vated ,yo uwi llhea ra
wa rning tone. Youwi llsee theCruise Con‐ Cru
ise Con‐
tro lOff tro
lOff message inthe multifu nctio ndis-
pl ay for appro xima telyfiv esec ond s.
i Whe
nyo usw itch offthe engine,the last
spe edstor ediscle ared . Ac
tiv eDi stan ceAssist DISTRO NIC
Ge neral notes Active
Distance AssistDISTR ONICreg ulate s
the speedand automa tically hel psyouma in-
tai nthe dista nce from thevehiclede tecte din
front. Vehicles arede tecte dwi th the aid of the
ra da rsens orsystem .Active Distance Assist
DISTR ONICbra kes automa tically to avoid
exce eding the setspeedortoma inta inthe
de signa ted dista nce from thevehiclein front.
If Active Distance AssistDISTR ONICde tects
tha tther eis aris kof acol lisi on with the vehi-
cle infront, youwi llbe warned visually and
au dibly. Active Distance AssistDISTR ONIC
canno tpre vent acol lisi on withou tyo ur inte r-
venti on.Aninte rmittent warning tonewillthen 15
8 Dri
ving sys temsDrivi ng andparki ng

!
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

To
activate Active Distan ceAssist DISTRONIC,
all the following conditionsmust befulfilled:
R the engine mustbestart ed.Itmay take up
to two minutes ofdriving beforeActive Dis-
tanc eAssist DISTRONIC isready foruse.
R the electric parking brakemustbereleased.
R ESP ®
must beactive, butnot inter vening.
R Act ive Parking Assistmustnotbeactivated.
R the trans mission mustbeinposition 005B.
R the driver's doormust beclosed whenyou
shift from 005Dto005B oryour seatbeltmust
be fasten ed.
R the front -passenger doormust beclosed.
R DSR must bedeactivated.
R the vehicle mustnotskid.
Activating X Briefly pullthecruise controllever towards
you 0085,up0043 ordown 0044.
Act ive Distan ceAssist DISTRONIC isactiva-
ted.
X Keep thecruise controllever pressed up0043
or down 0044until thedesired speedisset.
X Remove yourfootfrom theaccelerator
pedal.
Your vehicle adaptsitsspeed tothat ofthe
vehicle infront ,but only uptothe desired
stored speed.
i If
you donot fully release theaccelerator
pedal, theAct. Distance AssistSus‐ Act.
Distance AssistSus‐
pended pended
message appearsinthe multifunc-
tion display .The setdistance toaslower-
moving vehicleinfront willthen notbe
maintained. Youwillbedriving atthe speed
you determin eby the position ofthe accel-
erator pedal.
Act. Distance AssistSuspended Act.
Distance AssistSuspendedYou can
also activate Active Distan ceAssist
DIS TRONIC whenstation ary.Thelowest speed
that canbeset is20 mph (30km/ h).
Dri vin gwit hAct ive Dist ance Assi st
DIST RONIC Act
ivating atthecur rent speed orlas t
st or ed speed G
WAR
NING
If you callup thest or ed spe edand itdif fers
fr om thecur ren tspe ed, theveh icle acc eler -
at es ordec eler ates. Ifyou donotkn ow the st
or ed spe ed, theveh icle co uld acceler ate
or bra keune xpec tedly. Thereisaris kof an
acc iden t.
Pay atte nt ion tothero ad and traff icco nd i-
ti on sbef orecal lingup thest or ed spe ed. If
you donotkn ow thest or ed spe ed, stor eth e
des iredspe edagain .
X Brief lypull thecr uise contro llev ertoward s
you 0085.
X Rem oveyour foot from theacc eler ator
peda l.
The first time Active Distanc eAs sis t
DI ST RON ICisact ivat ed, itstor es thecur ren t
spe edorreg ulat esthespe edoftheveh icle
to thepre viously stor ed spe ed.
Pu llin gawa yan ddr ivin g
X If
you wantto pullawa ywit hAct ive Dis-
ta nce Assi stDIST RONIC: rem oveyour foot
fr om thebra kepeda l.
X Brief lypull thecr uise contro llev ertoward s
you 0085.
or X If
Act ive Dist ance Assi stDIST RONICis
act ivated: acc eler atebri efly.
Your vehicle pulls away andadapt sits spe ed
to that oftheveh icle in fron t.Ifno veh icle is
det ectedin fron t,your vehicle acc eler ates
to theset speed.
The vehicle can also pullaway when itis fac ing
an uniden tifie dobs tacle or isdri vin gon adif -
fe ren tlin efrom another veh icle. The vehicle
th en bra kesaut omatically. Berea dytobra ke
at all times .
If th ere isno veh icle in fron t,Ac tive Distanc e
As sis tDI ST RON ICope rates inthesam eway
as cruise contro l.
If Ac tive Distanc eAs sis tDI ST RON ICdet ects a
slo wer -moving veh icle in fron t,itbra kesyour
veh icle. Inthis way, thedis tanc eyou have
sel ectedis main tained.
If Ac tive Distanc eAs sis tDI ST RON ICdet ects a
fas ter-mo vingveh icle in fron t,itincr ease sth e
dri vin gspe ed. Howev er,theveh icle ison ly
acc eler ated up tothespe edyou havest or ed.
i Ac
tive Distanc eAs sis tDI ST RON ICisdeac -
ti vat ed when youdepr essthebra ke,ex ce pt
when theveh icle isstat ion ary. Dri
ving systems
161Dr ivi ng andparki ng Z

Selec
tingthedrive progra m
Act ive Distanc eAssist DISTRONIC supportsa
sporty driving stylewhen youselect theS+
drive program (Ypage 138)orthe manual
drive program (Ypage 140). Acceleration
behind thevehicle infront ortothe setspeed
is then noticeably moredynamic. Ifyou have
selected theE(Mercedes-AMG vehicles:C)
drive program, thevehicle accelerates more
gently. Thissettin gis recommen dedinstop-
and-start traffic.
Changing lanes
If you want tochange tothe overtakin glane
on multi-lane roads,Active Distanc eAssist
DISTRONIC supportsyouif:
R you aredriving fasterthan45mph
(70 km/h)
R Act ive Distanc eAssist DISTRONIC ismain-
taining thedistance toavehicle infront
R you switch onthe appropriate turnsignal
R Act ive Distanc eAssist DISTRONIC doesnot
current lydetect adanger ofcollision
If these condition sare fulfilled, yourvehicle is
accelerated. Acceleration willbeinterrupt edif
changing lanestakes toolong orifthe dis-
tance between yourvehicle andthevehicle in
front becomes toosmall.
Stopping If Act ive Distanc eAssist DISTRONIC detects
that thevehicle infront isstopping, itbrakes
your vehicle untilitis stationary.
Once yourvehicle isstationary, itremains sta-
tionary andyoudonot need todepress the
brake.
i Aft
eratime, theelectric parking brake
secures thevehicle andrelieves theservice
brake.
i Depending
onthe specified minimum dis-
tance, yourvehicle willcome toastandst ill
at asufficient distancebehindthevehicle in
front .The specified minimum distanceisset
using thecont rolonthe cruise controllever. When
Active Distanc eAssist DISTRONIC is
activated, thetransm issionisshifted automati-
cally toposition 005Dif:
R the driver's seatbeltisnot fastened andthe
driver's doorisopen.
R the engine isswitched off,unless itis auto-
matically switchedoffbythe ECO start/
stop funct ion.
The electric parking brakeisapplie dautomati-
cally ifAct ive Distanc eAssist DISTRONIC is
active whenthevehicle isstationary and:
R asystem malfunction occurs.
R the power supply isinsufficient .
If amalfunction occurs,thetransm issionmay
also shift toposition 005Dautomatically.
Setting aspeed Keep
inmind thatitmay take abrief moment
until thevehicle hasaccelerated orbraked to
the speed set.
X Press thecruise controllever up0043 for a
higher speedordown 0044for alower speed.
X To
adj ust the setspeed in1mph incre-
ments (1km/h increments): brieflypush
the cruise controllever up0043 ordown 0044to
the pressure point.
The laststored speedincreases ordecrea-
ses in1mph (1km/h) incremen ts.
X To
adj ust the setspeed in5mph incre-
ments (10km/h increments): brieflypush
the cruise controllever up0043 ordown 0044
beyond thepressure point.
The laststored speedincreases ordecrea-
ses in5mph (10km/h) incremen ts.
i Act
ive Distanc eAssist DISTRONIC isnot
deactivated ifyou depress theaccelerator
pedal. Ifyou accelerate toovertake, Active
Distanc eAssist DISTRONIC adjuststhevehi-
cle's speed tothe last speed stored, after
you have finished overtakin g.
Setting aspecified minimum distance You
cansetthe specified minimum distance
for Active Distanc eAssist DISTRONIC byvary-
ing the time span between oneandtwosec-
onds. Thisdetermines thedistance thatActive
Distanc eAssist DISTRONIC isto maintain from
the vehicle infront ,depending onthe road
speed. Youcanseethis distance inthe multi-
funct iondisplay (Ypage 164). 162
Driving
systemsDriving andparking

The
specified minimum distancecanbe
changed whileActive Distan ceAssist
DIS TRONIC isswitched onoroff.
i Make
surethatyoumaintain theminimum
distance tothe vehicle infront asrequired
by law. Adjust thedistance tothe vehicle in
front ifnecessary. X
To increase: turncontrol0087 indirec-
tion 0044.
Act ive Distan ceAssist DISTRONIC then
maintains agreater distance between your
vehicle andthevehicle infront .
X To decrease: turncontrol0087 indirec-
tion 0043.
Act ive Distan ceAssist DISTRONIC then
maintains ashorter distance between your
vehicle andthevehicle infront .
Deactivating ActiveDistance Assist
DISTRONIC There
areseveral waystodeactivate Active
Distan ceAssist DISTRONIC:
X Briefly pressthecruise controllever for-
wards 0043.
or X Brake, unless thevehicle isstation ary. X
Briefly pressthecruise controllever for-
wards 0043.
or X Brake, unless thevehicle isstation ary.
When youdeactivate Active Distan ceAssist
DIS TRONIC, theActive Distance Assist Active
Distance Assist
Off Off
message appearsonthe multifunct iondis-
play forapproximately fiveseconds.
i The
lastspeed stored remains storeduntil
you switch offthe engine. Active Distan ce
Assist DISTRONIC isnot deactivated ifyou
depress theaccelerator pedal.
Act ive Distan ceAssist DISTRONIC isautomati-
cally deactivated if:
R you engage theelectric parking brakeorif
the vehicle isautomatically securedwiththe
electric parking brake
R ESP ®
inter venes oryou deactivate ESP®
R the trans mission isin position 005D,005Eor005C
R you pull thecruise controllever towards you
in order topull away andthefront -
passenger doororone ofthe rear doors is
open
R the vehicle isskidding
R you activate Active Parking Assist
If Act ive Distan ceAssist DISTRONIC isdeacti-
vated automatically, youwillhear awarning
ton e.You willsee theActive Distance Active
Distance
Assist Off Assist
Offmessage onthe multifunct iondis-
play forapproximately fiveseconds.
Act ive Distan ceAssist DISTRONIC isalso auto-
matically deactivated whenyouactivate DSR.
The 00C6 DSRsymbol appears inthe multi-
funct iondisplay . Driving
systems
163Drivingandparking Z

Acti
veDist ance AssistDIST RONIC dis-
pla ysintheinst rumen tclus ter Disp
laysin thesp eedo meter When
Active Distanc eAs sis tDI ST RONI Cis
act ivat edand there arenoveh icles det ectedin
fr on t,on eor two segmen ts0044 intheset
spee dran geligh tup.
If Ac tive Distanc eAs sis tDI ST RONI Cdet ects a
veh iclein fron t,seg men ts0044 from spee dof
th eveh iclein fron t0087 tostore dspee d0043 ligh t
up.
i Fo
rdesi gnreas ons,thespee ddisp layed
on thespee dometer may differ slig htly from
th espee dset forActive Distanc eAs sis t
DI ST RONI C.
Disp laywhen ActiveDist ance Assist
DIST RONIC isdea ctivated
In theAs sis tan cemen u(Y page 196)ofthe
on -board comput er,you can selecttheassi s-
tan cedisp lay. 0043
Veh iclein fron t,ifdet ected
0044 Distanc eind icat or,curren tdist anceto the
veh iclein fron t
0087 Specifie dmin imum distanceto theveh icle
in fron t;adj ust able
0085 Your vehicle X
Se lec tth eAss istanceGra phic Ass
istanceGra phicfun ction
usin gth eon -board comput er(Y page 197).
Disp laywhen ActiveDist ance Assist
DIST RONIC isact ivated
You willinitially see thest ore dspee dfor
appr oximat elyfivesec onds when youactivat e
Ac tive Distanc eAs sis tDI ST RONI C. 0043
Veh iclein fron t,ifdet ected
0044 Specifie dmin imum distanceto theveh icle
in fron t;adj ust able
0087 Your vehicle
0085 Active Distanc eAs sis tDI ST RONI Cact ive
(t ex ton lyappear swhen thecr uise control
lev erisact uate d)
X Se lec tth eAss istanceGra phic Ass
istanceGra phicfun ction
usin gth eon -board comput er(Y page 197).
Ti ps for drivin gwith ActiveDist ance
Assis tDIST RONIC Gene
ralnot es
Pay particularatt ention inthefol lowin gtraff ic
sit uati ons:
R Corn ering,en terin gand exiting aben d:the
abilit yof Active Distanc eAs sis tDI ST RONI C
to det ectveh icles on ben dsislimi ted. Your
veh iclemay brakeune xpec tedly orlate.
R Veh icles drivin gin ast agge redformat ion:
Ac tive Distanc eAs sis tDI ST RONI Cmay not
det ectveh icles that are notdri vin gin the
midd leof their lanes. The distanceto the
veh iclein fron twill betoosho rt.
R Ot her vehicles chang inglane:Ac tive Dis-
tan ceAssis tDI ST RONI Chas notdet ected
th eveh iclecut ting inyet .The distanceto
th is veh iclewill betoosho rt.
R Nar row vehicles: Active Distanc eAs sis t
DI ST RONI Chas notyet detectedth eveh icle 164
Driv
ingsystem sDriv ingand parki ng