ECU MERCEDES-BENZ SLC 2020 Owner's Manual

G
WARNING
After ashort time, hillstart assistwil lnol on-
ger brake yourvehicl eand itcoul droll awa y.
There isar isk ofan accide ntand injury .
There fore,quickly move yourfoot from the
brake pedaltot he accele ratorpedal.Never
lea vethe vehicl ewhen itis held byhillstart
assi st.
Hill start assistisnot active if:
R you arepulling awayonal evelroad oron a
dow nhill gradient
R the transmissi onisin posi tion 005C
R the electric parkingbrake isapp lied
R ESP ®
is malfu nctioning EC
Os tart/stop function
Introduc tion The
ECO start/stop functionswitches the
engine offautomatical lyifthe vehicl eiss top-
ped under certain conditions.
The engine startsautomatica llywhen the
drive rwants topul lawa ya gain. The ECO
start/stop functiontherebyhelpsyou to
redu cethe fuel consumpti onand emiss ionsof
you rvehicl e.
Important safetynotes G
WARNING
If the engine isswi tched offautomatica lly
and youexit thevehicl e,the engine is
restarted automatical ly.T he vehicl emay
begi nmoving. Thereisar isk ofaccide ntand
injury .
If you wishtoe xitthe vehicl e,alw ayst urn
off the ignitio nand secure thevehicl e
aga inst rolling awa y. Gene
ralnote s 0043
ECO start/stop display
The ECO start/stop functionisactiva ted
whene veryou switch onthe engine using the
SmartKey orthe Start/Stop button.
If the engine hasbeen switched offautomati-
call ybythe ECO start/stop function,the00D6
ECO symb olisshow nint he multi function dis-
pla y.
Automatic engineswitch-off If
the vehicl eisb raked toas tandstil lwith the
transmissi onin005B or005C,t heECO start/stop
function switches offthe engine automatical ly.
The ECO start/stop functionisopera tional
when:
R the indica torlamp inthe ECO button islit
green
R the outsi detempera tureiswithi nthe range
that issui table forthe system
R the engine isat normal operatingtempera -
ture
R the settempera tureforthe vehicl einterior
has been reache d
R the battery issuffi ciently charged
R the system detects thatthewinds hieldis
not fogged upwhen theair-condi tioningsys-
tem isswi tched on
R the hood isclosed
R the drive r'sdoor isclosed andthedrive r's
seat beltisf astened
All ofthe vehicl e'ssystems remainactive
when theengine isstoppe dautomatical ly.
Automatic engineswitch-off cantake placea
maximu moffour times inar ow (initi alstop,
then three subsequ entstops).
The HOLD function canbeactiva tedifthe
engine hasbeen switched offautomatical ly.I t
is then notnecessa ryto continue applying the
brakes duringthe automatic stopphase.When
you depre ssthe accele ratorpedal,the engine Drivi
ng
121Drivi ngand parking Z

Problem
Possible
causes/co nsequences and0050 0050
Solutions The
coolant tempera-
ture display showsa
value above 248‡
(120 †).The coolant
warning lampmayalso
be on and awarning
tone maysound. The
coolant levelistoo low. Thecoolant istoo hotand theengine is
no longer beingcooled sufficiently.
X Stop assoon aspossible andallow theengine andthecoolant to
cool down.
X Check thecoolant level(Ypage 243). Observe thewarning notes
as you dosoand add coolant ifnecessary. If
the coolant leveliscorrect ,the engine radiator fanmay befaulty.
The coolant istoo hotand theengine isno longer beingcooled suf-
ficiently.
X At coolant temperatures below248‡(120 †),drive tothe near-
est quali fiedspecialist workshop.
X Avoid heavy loadsonthe engine asyou doso, e.g. driving in
mountainous terrainandstop-and- gotraffic. Notes
ontowing vehicles
The vehicle isnot suitable forattaching tow
bar systems, suchasthose usedforflat tow-
ing ordinghy towing.
Att aching orusing towbarsystems mayresult
in damage tothe vehicle.
When towing avehicle withtowbarsystems,
safe driving characterist icscannot beguaran-
teed forthe towing vehicle orthe towed vehi-
cle.
The vehicle/vehicle combinationmayswerve.
Observe thepermissible towingmethods
(Y page 265)andthenotes ontowing with
both axles onthe ground (Ypage 265). DYNAMIC
SELECTbutton
Use theDYNAMIC SELECTbutton tochange
the drive program. Depending onthe drive pro-
gram selected thefollowing vehiclecharacter-
istics willchange:
R the drive (engine andtransmission manage-
ment)
R the suspension orthe adaptive adjustable
damping onlyonvehicles withAMG RIDE
CONTROL sportssuspension
R the sound ofthe exhaust system(vehicles
with sports exhaust system)
R the steering
R the availa bilityofthe ECO start/ stopfunc-
tion Each
timeyoustart theengine withtheSmart-
Key orthe Start /Stopbutton, driveprogram C
is activated. Forfurther information about
startin gthe engine, see(Ypage 119). X
Press DYNAMIC SELECTbutton 0043asmany
times asnecessary untilthedesired drive
program isselected.
The selected driveprogram appearsinthe
multifunct iondisplay .After as hort period of
time, thedisplay goesoutand thesymbol
for the selected driveprogram appears.
In addition, thecurrent driveprogram set-
tings aredisplay edbriefly inthe multimedia
system display.
i In
af ew countr ies,theECO start/ stop
funct ionisdeactivated atthe factory dueto
the availa blefuel grade. Inthis case, the
ECO start/ stopfunct ionisnot availa blein
any drive program, regardless ofthe display
in the multimedia systemdisplay.
In city traffic andstop-st arttraffic, drivepro-
gram Cis recommen ded. 124
DY
NAMIC SELECTbutt onDriving andparking

With
KEYLESS-GO :if you then open thedriv-
er's orfront-passenge rdoor, theautomatic
transmissi onshifts to005D automatical ly.
If you want theautomatic transmissi onto
remai ninn eutral 005C,e.g.when havingthe
vehicl ecleaned inan automatic carwas hwith
at owing system:
X Vehic leswith KEYLESS-GO :remove the
Start/Stop buttonfromtheignitio nlock.
X Insert theSmartKey intotheignitio nlock.
X All vehi cles:swi tch the ignitio non.
X Depress thebrake pedaland keep it
depre ssed.
X Shift toneutral 005C.
X Rel ease thebrake pedal.
X Rel ease theelectric parkingbrake.
X Switch offthe ignitio nand leavethe Smart-
Key inthe ignitio nlock.
Eng agin gdrive position D X
When thevehicl eiss tationa ry,depre ssthe
brake pedal.
X Push thesele ctor leverback past thefirst
point ofresis tance. Transmissio
npositi ons 0045 Park
positi on
This prevents thevehicl efrom roll-
ing awa ywhen stoppe d.
Only shiftthetransmissi oninto
posi tion 0045 (Ypag e125) when
the vehicl eiss tationa ry.The park-
ing lock shou ldnot beused asa
brake whenparking.Alwa ysapp ly
the electronic parkingbrake inadd i-
tion tothe parki nglock inorder to
secure thevehicl e.
If the SmartKey isremoved fromthe
ignitio nlock, thetransmissi onis
locked.
The automatic transmissi onshifts
to 0045 automatical ly:
R when theSmartKey isremoved
from theignitio nlock
R when theengine isswi tched off
with thetransmissi oninposi tion
0046 or003A andone ofthe
doors isopened
In the event ofam alfunction ofthe
vehicl e'selectronics, thetransmis-
sion may lockinposi tion 0045.
Have thevehicl eelectronics
checked immediatelyataq ualified
speci alist worksho p. 0046 Reverse
gear
Only shiftthetransmissi oninto
posi tion 0046 when thevehicl eis
stationa ry. Automatic
transmissio n
127Drivi ngand parking Z

lamp
mayalsolight up.Am essage appears
in the multif unction display (Ypage 198). For
further informat iononwarnin gand indi-
cat orlamps inthe instrumen tclust er,see
(Y page 214). Problem
swithfuel andthef uel tank Problem
Possible
causes/consequ encesand0050 0050
Solut ions Fuel
isleakin gfromt he
vehic le. The
fuel lineorthe fuel tankisf aulty.
G WARN
ING
Risk ofexplo sionorfire.
X Turn theSmar tKey immed iatelytoposit ion0092inthe ignit ionlock
(Y page 118)andremo veit.
X Do not restartthe engin eunder anycircumst ances.
X Consult aqualified specialist workshop. The
fuel filler flapcan-
not beopen ed. The
fuel filler flapisnot unloc ked.
X Unlo ckthe vehic le(Y page 66). The
Smar tKey batt eryisdisch arged ornear lydisch arged.
X Unlo ckthe vehic leusing themec hanic alkey (Ypage 68). The
fuel filler flapisunloc ked,buttheopen ingmec hanis misjam-
med.
X Consult aqualified specialist workshop. Par
king Imp
ortant safet ynotes G
WARN
ING
Flamm ablemate rialsuch asleaves, grassor
twigs mayigniteifthe yc om eintoc ontac t
with hotpart softhe exhaus tsyst em or
exhaus tgas flow. There isar isk offire.
Park thevehic leso that noflamm ablemate -
rials comeintoc ontac twith part softhe
vehic lewhich arehot.Take particular care
not topark ondry grasslan dorharve sted
grain fields. G
WARN
ING
If you leave childrenunsuper visedinthe
vehic le,the ycould setitin mot ionby,for
exam ple:
R release thepark ingbrak e.
R shift theautom atictransm ission outof
the park ingposit ionP.
R star tthe engin e.
In addition ,the ym ayoperat evehic leequip-
men tand becom etrapped. Thereisar isk of
an acc ident andinjury.
When leavingthe vehic le,always takethe
Smar tKey with youand lock thevehic le.
Never leavechildrenunsuper visedinthe
vehic le.
! Always
securethe vehic lecor rectlyagainst
rollin gaway. Otherwise, thevehic leor its
drive train could bedamaged. 134
Par
kingDriving andparking

To
ensure thatthevehicle issecured against
rolling awayunintention ally:
R the electric parking brakemustbeapplied.
R the trans mission mustbeinposition 005D.
R the Smart Keymust beremoved fromthe
ignition lock.
R the front wheels mustbeturned towards the
curb onsteep uphillordownhill gradients. Switching
offthe engine 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.
X Apply theelectric parking brake.
X Shift thetrans mission toposition 005D
(Y page 126).
X With theSmar tKey:turn theSmart Keyto
position 0092inthe ignition lockandremove
it.
The immobilizer isactivated.
X With KEYLESS-GO: presstheKEYLE SS-GO
Start /Stopbutton (Ypage 118).
The engine stopsandallthe indicator lamps
in the instr ument cluster goout.
If the driver's doorisclosed, thisisthe
same asSmart Keyposition 0047.Ifthe driv-
er's door isopen, thisisthe same asSmart -
Key position 0092(Ypage 118).
The engine canbeswitched offwhile thevehi-
cle isin motion bypressing andholding the
Start /Stopbutton forabout threeseconds.
This funct ionoperates independent lyof the
ECO start/stopautomatic engineswitch-off
funct ion. Elec
tric par king brake
General notes G
WARNIN
G
If children areleft unsupervised inthe vehi-
cle, they could:
R open doors, thereby endangerin gother
persons orroad users
R get out and bestruck byoncom ingtraff ic
R operate thevehicle's equipment
Addition ally,children couldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmission outof
park position 005Dorshift themanual
trans mission toneutral
R start theengine
There isar isk ofan accident andinjury.
When leaving thevehicle, alwaystake the
Smart Keywith youand lock thevehicle. This
also applies forthe digital vehicle keyifthe
"Digital Vehicle Key"functionisactivated via
Mercedes meconn ect.
Always keeptheSmart Keyoutofreach of
children. Thisalso applies forthe Digital
Vehicle Keyifthe "Digital Vehicle Key"func-
tion isactivated viaMercedes meconn ect.
The funct ionofthe electric parking brakeis
dependent onthe on-board voltage.Ifthe on-
board voltage islow orthere isam alfunct ion
in the system, itmay notbepossible toapply
the released parkingbrake.
X Ifthis isthe case, onlypark thevehicle on
level ground andsecure itto prevent itroll-
ing away .
X Shift theautomatic transmission toposition
005D.
It may notbepossible torelease anapplied
parking brakeifthe on-board voltageislow or
there isam alfunct ioninthe system. Contact a
qualified specialist workshop.
The electric parking brakeperforms afunct ion
test atregular intervalswhile theengine is
switched off.The sounds thatcanbeheard
while thisisoccurrin garenormal. Par
king
135Driving andparking Z

The
ECO display consistsofthree section s,
with aninner andouter area.Thesection scor-
respond tothe following threecategories: 0043
Acce
leration (evaluation ofall
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
unnecessary accelerationand
deceleration
R the outer areaempties andthe
inner areaisgray: fluctuations in
speed The
three innerareas display thecurrent driv-
ing style andlight upgreen asaresult ofap ar-
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 active electric alconsumer s
These factorsarenot included inthe ECO dis-
play.
An econom icaldriving stylespecially requires
driving atmoderate enginespeeds.
Achievin gahigher value inthe categories
"Accelerat ion"and"Constant ":
R observe thegearshift recommendations .
R drive thevehicle indrive program Cor E.
In urban trafficand stop- start traffic,drive pro-
gram Cis recomm ended.
On long journeys atac onst 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 172).
Further informationonthe ECO display
(Y page 171). 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. Driving
tips
139Driving andparking Z

To
ensure anadequa tesupply offresh air,
open awindow onthe side ofthe vehicle
that isnot facing intothewind.
Have yourvehicle winter-proofed ataq ualified
specialist workshop atthe onset ofwinter.
Drive particularly carefullyonslippery road
surfaces. Avoidsudden acceleration ,steerin g
and braking maneuvers. Donot use cruise
cont rol.
If the vehicle threatenstoskid orcann otbe
stopped whenmoving atlow speed:
X Shift thetrans mission toposition 005C.
The outside temperat ureindicator isnot
designed toserve asan ice-warnin gdevice
and istherefor eunsuitable forthat purpose.
Changes inthe outside temperat urearedis-
played afterashort delay.
Indicat edtemperat uresjustabove thefreezin g
point donot guarantee thattheroad surface is
free ofice. The road maystillbeicy, especially
in wooded areasoron bridges. Thevehicle
could skidifyou failtoadapt yourdriving
style. Always adaptyourdriving styleanddrive
at as peed tosuit theprevailing weathercondi-
tions.
You should payspecial attentiontoroad con-
ditions whentemperat uresarearound freezing
point.
For more inform ationondriving withsnow
chains, see(Ypage 271).
For more inform ationondriving withsummer
tires, see(Ypage 270).
Observe thenotesinthe "Winter operation"
section (Ypage 270). Driving
systems Cruise
control
General notes Cruise
controlmaintains aconst antroad
speed foryou. Itbrakes automatically inorder
to avoid exceeding thesetspeed. Onlong and
steep downhill gradients, especiallyifthe vehi-
cle isladen, youmust select alower gearin
good time. Bydoing so,you willmake useof
the braking effectofthe engine. Thisrelieves
the load onthe brake system andprevent sthe brakes
fromoverheating andwearing too
quickly.
Use cruise controlonly ifroad andtrafficcon-
ditions makeitappropriate tomaintain a
steady speedforaprolonged period.Youcan
store anyroad speed above20mph
(30 km/ h).
Import antsafety notes If
you failtoadapt yourdriving style,cruise
cont rolcan neither reducetherisk ofan acci-
dent noroverride thelaws ofphysics. Cruise
cont rolcann ottake intoaccount theroad,
traff icand weather conditions.Cruise control
is only anaid. You areresponsible forthe dis-
tanc etot he vehicle infront ,for vehicle speed,
for braking ingood timeandforstaying in
lane.
Do not use cruise control:
R in road andtrafficcondit ionswhich donot
allow youtomaintain aconst antspeed e.g.
in heavy trafficor on winding roads
R on slippery roadsurfaces. Brakingoraccel-
erating couldcause thedrive wheels tolose
tract ionand thevehicle couldthenskid
R when thereispoor visibility, e.g.due tofog,
heavy rainorsnow
If there isac hange ofdrivers, advisethenew
driver ofthe speed stored.
Cruise control lever 0043
Tostore thecurrent speedorah igher
speed
0044 Tostore thecurrent speedorcalls upthe
last stored speed
0087 Tostore thecurrent speedoralower
speed
0085 Todeactivate cruisecontrol 142
Driving
systemsDriving andparking

When
youactivat ecruise control,the stored
speed isshown inthe multifunc tiondisplay for
five secon ds.The speed isthen permanen tly
displayed inthe status indicator togetherwith
the 00B2 symbol.
In vehicles withasegment circleinthe speed-
ometer ,the segment sbetween thecurren tly
stored speedandtheend ofthe segment cir-
cle light up.
Storing, maintaining andcalling upa
speed Storing
andmaint aining aspeed
X Acc elerate thevehicle tothe desired speed.
X Briefly pressthecruise controllever up0043
or down 0085.
X Remove yourfootfrom theaccelerat or
pedal.
Cruise controlisactivat ed.The vehicle auto-
matically maintainsthe stored speed.
You canstore thecurren tspeed ifyou are
driving fasterthan20mph (30km/ h).
i Cruise
controlmay beunable tomaintain
the stored speedonuphill gradients .The
stored speedisresumed whenthegradient
evens out.Cruise controlmaintain sthe
stored speedondownhill gradients byauto-
matically applyingthebrakes.
Storing orcalling upaspeed G
WARNIN
G
If you callupthe stored speedanditdiffers
from thecurren tspeed, thevehicle acceler-
ates ordecelerates. Ifyou donot know the
stored speed, thevehicle couldaccelerat e
or brake unexpec tedly.There isar isk ofan
accident .
Pay atten tiontothe road andtrafficcondi-
tions before callingupthe stored speed. If
you donot know the stored speed, storethe
desired speedagain.
X Briefly pullthecruise controllever towards
you 0087.
X Remove yourfootfrom theaccelerat or
pedal.
The first time cruise controlisactivat ed,it
stores thecurren tspeed orregulates the speed
ofthe vehicle tothe previously stored
speed.
Setting aspeed G
WARNIN
G
Keep inmind thatitmay take abrief
momen tuntil the vehicle hasmade thenec-
essary adjustmen ts.
Inc rease ordecrease thesetvehicle speed
to av alue thattheprevailing roadcondit ions
and legal speed limitspermit. Otherwise,
sudden andunexpec tedaccelerat ionor
deceleration ofthe vehicle couldcause an
accident and/orserious injurytoyou and
others .
X To
adj ust the setspeed in1m phincre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres-
sure point forahigher speed, ordown 0085
for alower speed.
Ever ytime thecruise controllever is
pressed upordown, thelast speed stored is
incr eased orreduced.
X To
adj ust the setspeed in5m phincre-
ments (10km/h increments): briefly
press thecruise controllever up0043 past the
pressure pointforahigher speed, or
down 0085for alower speed.
Ever ytime thecruise controllever is
pressed upordown, thelast speed stored is
incr eased orreduced.
i The
speed indicated inthe speedometer
may differ slightly fromthespeed stored.
i Cruise
controlisnot deactivat edifyou
depress theaccelerat orpedal. Forexample,
if you accelerat ebriefly toovert ake,cruise
cont roladjusts thevehicle's speedtothe
last speed stored afteryouhave finished
overt aking. Driving
systems
143Driving andparking Z

R
the driver 'sdo or mu stbe closedw heny ou
shi ftfro m005D to005B oryour seat beltmu st
be faste ned .
R the front-pa ssenge rdoorm ustb ec lose d.
R the vehiclem ustn ot ski d.
Ac tiv atin g
X Bri eflyp ullt he cru isec ontro llev er tow ards
yo u0085,u p0043 ordown 0044.
Activ eDistance AssistDISTR ONICisa ctiva-
ted .
X To
adjus tthe sets peed in1m phincre -
men ts(1 km/ hincremen ts):bri eflyp ress
the cruisec ontro llev er up 0043 tothe pres-
su re point for ahighe rs peed, ordown 0044to
the pressu repoint for alow erspee d.
Ever ytimet he cru isec ontro llev er is
pre sse dupo rdow n,the last spee ds tored is
incr easedo rred uce d.
or X To
adjus tthe sets peed in5m phincre -
men ts(10k m/ hincremen ts):bri efly
pre ssthe cruisec ontro llev er up 0043 past the
pre ssu repoint for ahighe rs peed, or
do wn 0044past the pressu repoint for alow er
sp ee d.
Ever ytimet he cru isec ontro llev er is
pre sse dupo rdow n,the last spee ds tored is
incr easedo rred uce d.
X Re mov eyourfoo tfromt heacc elera tor
pe dal.
Yo ur veh iclea daptsi ts spee dt othato fthe
veh iclei nf ront, buto nlyu ptothe desired
stor edspee d.
i If
yo ud on otfullyr elea se the accelera tor
pe dal,the Active DistanceAssist pas‐ Act
ive DistanceAssist pas‐
siv e siv
emes sage appe arsi nt he mu ltifu nctio n
di sp lay. The setd ista nce toas lowe r-m oving
veh iclei nf ront willthe nnotbe mainta ined.
Yo uw illb ed rivin ga tthe spee dy ou deter-
mi ne bythe positio no fthe acc elera tor
pe dal.
Yo uc an also acti vate Activ eDistance Assist
DISTR ONICwhens tatio nar y.The lowe stspee d
tha tcan be setis2 0m ph(30 km/h ).
Ac tiv atin gatthe curren tspeed/ last
sto red speed G
WA
RNING
If yo uc allu pt he stor edspee da nd itdiffe rs
fro mt hecur rent spee d, the vehiclea cceler- ate
sordecelera tes.Ify ou do not know the
stor edspee d, the vehiclec ouldacc elera te
or bra keune xpected ly.T her eisar isko fan
acc ident.
Pa ya ttentio ntot he roa dand trafficc ond i-
tio ns befor ec alling up the stor edspee d. If
yo ud on otknow thestor edspee d, stor ethe
de sired spee da gain.
X Bri eflyp ullt he cru isec ontr ollever towards
yo u0085.
X Re mov eyourfoo tfromt heacc elera tor
pe dal.
Th ef irst tim eA ctiv eDistance Assist
DISTR ONICisa ctivated ,its tor es the current
sp ee do rreg ulate sthe spee do fthe veh icle
to the previouslystor edspee d.
Pul ling awayand driving
X If
yo uw anttop ulla wa yw ithA ctiveD is-
tanc eAssistD ISTRO NIC:rem ove your foo t
fro mt hebra kepedal.
X Bri eflyp ullt he cru isec ontr ollever towards
yo u0085.
or X IfActiv eDistance AssistDISTR ONICisa cti-
va ted :accelera tebri efly.
Yo ur veh iclep ulls aw ay and adapts its spee d
to tha tofthe veh iclei nf ront. Ifno veh iclei s
de tecte dinf ront, your veh iclea ccelera tes
to the sets peed.
The vehiclec an also pullaw ay when itis facing
an unidentif iedo bstacle orisdri vin go nad if-
fer ent line froma nothe rvehicle. The vehicle
the nbrakes automa tically. Be rea dytobra ke
at allt im es.
If the reisno veh iclei nf ront, Activ eDistance
Assi stDISTR ONICoperates inthe same way
as cru isec ontro l.
If Activ eDistance AssistDISTR ONICdetects a
sl ow er-m oving veh iclei nf ront, itbra kes your
veh icle. In thi sw ay,the dista nce youh ave
se lected isma inta ined.
If Activ eDistance AssistDISTR ONICdetects a
fa ste r-mo vingv ehiclei nf ront, itincr easest he
dri vin gs peed. How ever,the vehiclei so nly
acc elera ted uptothe spee dy ou have stor ed. Dr
ivi ng system s
147Drivi ng andp arki ng Z

Selec
tingthedrive progra m
Act ive Distanc eAssist DISTRONIC supportsa
sporty driving stylewhen youhave selected
the Sor S+ drive program (Ypage 124).
Acc eleration behindthevehicle infront orto
the setspeed isthen noticeably more
dynamic. Ifyou have selected theCor Edriv-
ing program, thevehicle accelerates more
gently. Incity traffic andstop-st arttraffic,
drive program Cis recommen ded.
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 toav ehicle infront
R you switch onthe appropriate turnsignal
R Act ive Distanc eAssist DISTRONIC doesnot
current lydetect adanger ofcollision
If these condition sarefulfilled, yourvehicle is
accelerated. Acceleration willbeinterrupt edif
changing lanestakes toolong orifthe dis-
tance between yourvehicle andthevehicle in
front becomes toosmall.
i When
youchange lanes,Active Distanc e
Assist DISTRONIC monitorsthe left lane on
left-hand- drivevehicles orthe right laneon
right-han d-drivevehicles.
Stopping G
WARNING
If you leave thedriver's seatwhen thevehi-
cle isonly being braked byAct ive Distanc e
Assist DISTRONIC, itcould rollaway :
R ifthere isam alfunction inthe system or
in the voltage supply
R ifAct ive Distanc eAssist DISTRONIC is
deactivated usingthecruise controllever,
for example byavehicle occupant orfrom
outside thevehicle
R ifthe electrical systeminthe engine com-
partment ,the battery orthe fuses are
tampered with R
ifthe battery isdisconnec ted
R ifthe vehicle isaccelerated, e.g.byavehi-
cle occupant
There isar isk ofan accident.
Always deactivate Active Distanc eAssist
DISTRONIC andsecure thevehicle against
rolling awaybefore youleave it.
Further information ondeactivating Active Dis-
tance Assist DISTRONIC (Ypage 150).
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 toas tandst ill
at as ufficient distance behindthevehicle 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 as ystem malfunction occurs
R the power supply isnot sufficient
If am alfunction occurs,thetransm issionmay
also shift toposition 005Dautomatically.
Setting aspeed Keep
inmind thatitmay take abrief moment
until thevehicle hasaccelerated orbraked to
the speed set.
X To
adj ust the setspeed in1m phincre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres- 148
Driving
systemsDriving andparking