ECU MERCEDES-BENZ SL CLASS 2020 Owner's Manual

005D
Park position
005E Reverse gear
005C Neutral
005B Drive
The selector leveralway sreturn sto its original
position. Thecurren ttrans mission position 005D,
005E, 005Cor005B isshown inthe trans mission
position displayinthe multifunc tiondisplay.
Mercedes-AMG vehicles
! If
the engine speedistoo high orthe vehi-
cle isin motion ,do not shift theautomatic
tran smission directlyfrom005Bto005E, from
005E to005B ordirectly to005D.
Do not open thedriver's doorwhile thevehi-
cle isin motion .At low speeds intrans mis-
sion position 005Bor005E, otherwise parkposi-
tion 005Disengaged automatically.
The transmission couldbedamaged. 005D
Park position
005E Reverse gear
005C Neutral
005B Drive
The selector leveralway sreturn sto its original
position. Thecurren ttrans mission position 005D,
005E, 005Cor005B isshown inthe trans mission
position displayinthe multifunc tiondisplay. Tr
ansmission positionanddrive pro-
gram display All
vehicles (exceptMercedes-AMG vehi-
cles) 0043
Transmission position
0044 Gear
0087 Drive program
The curren ttran smission positionanddrive
program appearinthe multifunc tiondisplay.
Mercedes-AMG vehicles 0043
Transmission position
0044 Drive program
The curren ttran smission positionanddrive
program appearinthe multifunc tiondisplay.
In addition todrive program 0044being shown in
the multifunc tiondisplay, thecurren tlyselec-
ted drive program isindicated inred onthe
DYNA MICSELECT controller (Ypage 132). 136
Automa
tictransmissionDriving andparking

With
theSmartKey: ifyou then open thedriv-
er's door orthe front-passenge rdoor or
remove theSmartKey fromtheignitio n,the
au tomatic transmissi onshifts to005D automati-
call y.
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 nin neutral 005C,e.g. when havingthe
vehicl eclea ned inan automatic carwas hwith
a towing 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 eis stationa ry,depre ssthe
brake pedal.
X Push thesele ctor leverback pastthefirst
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 e135) when
the vehicl eis stationa 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 ofamalfu nction ofthe
vehicl e'selectronics, thetransmis-
sion may lockinposi tion 0045.
Have thevehicl eelectronics
checked immediatelyat aqua lified
speci alist worksho p. 0046 Reverse
gear
Only shiftthetransmissi oninto
posi tion 0046 when thevehicl eis
stationa ry. 138
Automatic
transmissio nDrivingand parking

R
optimal fuelconsumpt ionresulting fromthe
automatic transmissionshifting upsooner.
The vehicle isdriven inthe low engine speed
range andthewheels areless likely tospin.
R gliding modeisavaila ble.
R the ECO start/stop functionisavaila ble.
R ESP ®
provides theoptimum compromise
between tractionand stability. Furtherinfor-
mation aboutESP®
(Y page 66).
Drive programI(Individual)
In drive program Ithe following properties of
the drive program canbeselected:
R the drive (engine management )
R the transm issionmanagement
R ESP ®
R the suspension
Infor mation aboutconfiguring driveprogram I
with themultimedia systemcanbefound in
the Digital Operator's Manual.
i To
permanent lyselect thegears indrive
program Iusing thesteering wheelpaddle
shifters, selecttheM(manual) settingfor
the transm ission. Manua
lgearshift ing
General notes You
canchange gearyourself usingthesteer-
ing wheel paddle shifters. Thetransm ission
must beinposition 005Btodo this.
Depending onwhich steering wheelpaddle
shifter ispulled, theautomatic transmission
immediately shiftsintothenext gear down or
up, ifpermitt ed.
To use manual shifting, youhave twooptions:
R temporary setting
R permanent setting
If you activate manualgearshifting, themulti-
funct iondisplay willshow thecurrent gear
instead oftransm issionposition 005B.
If manual gearshifting isdeactivated, thegears
will beselected automatically. Temp
orarysetting X
To activat e:shift theselector leverto005B.
X Pull steering wheelpaddle shifter0043or0044.
The temporary settingisactive foracert ain
amount oftime. Under certaincondit ions,the
minimum amountoftime isexten ded,e.g.in
the case oflateral acceleration, duringoverrun
mode orwhen driving onsteep terrain.
X To deactivat e:pull steering wheelpaddle
shifter 0044and hold itin place.
or
X Use thelever toswitch thetransm ission
position.
or X All
vehicles (exceptMercedes-AMG vehi-
cles): usetheDYNAMI CSEL ECT button to
change thedrive program.
X Mercedes-AMG vehicles:usethe
DYNAMI CSEL ECT controller tochange the
drive program.
Perma nentsetting All
vehicles (exceptMercedes-AMG vehi-
cles) 142
Automa
tictransmissionDriving andparking

Never
leavechildren unsupervisedinthe
vehicle.
! Alway
ssecure thevehicle correctly against
rolli ngawa y.Otherwise, thevehicle orits
drivetrain couldbedama ged.
To ensure thatthevehicle issecured against
rolli ngawa yunintentionally :
R the electric parking brakemustbeappl ied.
R the transmission mustbeinposition 005D.
R the SmartKey mustberemoved fromthe
ignition lock.
R the front wheel smust beturned towards the
curb onsteep uphillor downhil lgradi ents. Switc
hingoffthe engi ne G
WARNING
The automa tictransmission switchestoneu-
tral position Nwhen youswitch offthe
engine. Thevehicle mayrollawa y.There isa
risk ofan accident.
After switching offthe engine, always switch
to parking position P.Prevent theparked
vehicle fromrollingawa yby appl ying the
parking brake.
X Apply theelectric parking brake.
X Shift thetransmission toposition 005D
(Y page 137).
X With theSmart Key:turn theSmartKey to
position 0092inthe ignition lockandremove
it.
The immobil izerisactivated.
X With KEYLESS -GO:press theKEYLESS -GO
Start/S topbutton (Ypage 126).
The engine stopsandallthe indicator lamps
in the instrument clustergoout.
If the driver's doorisclosed, thisisthe
same asSmartKey position0047.Ifthe driv-
er's door isopen, thisisthe same asSmart-
Key position 0092(Ypage 126).
The engine canbeswitched offwhil ethe vehi-
cle isin motion bypressing andholdi ngthe
Start/S topbutton forabou tthree seconds.
This function operates independently ofthe
ECO start/stop automaticengine switch-off
function. Ele
ctric parking brake
General notes G
WARNING
If children areleft unsupe rvisedinthe vehi-
cle, they could:
R open doors, thereby endangering other
persons orroad users
R get out and bestruck byoncoming traffic
R operate thevehicle's equipment
Additional ly,children couldsetthe vehicle in
motion if,for example ,they:
R relea sethe parking brake
R shift theautoma tictransmission outof
park position 005Dorshift themanual
transmission toneutral
R start theengine
There isarisk ofan accident andinjury.
When leavingthe vehicle, always take the
SmartKey withyouand lock thevehicle. This
also appliesforthe digitalvehicle keyifthe
"Digital Vehicle Key"function isactivated via
Mercedes meconnect .
Alway skeep theSmartKey outofreach of
children. Thisalso appliesforthe Digital
Vehicle Keyifthe "Digital Vehicle Key"func-
tion isactivated viaMercedes meconnect .
The function ofthe electric parking brakeis
dependent onthe on-board voltage.Ifthe on-
board voltage islow orthere isamalfu nction
in the system, itmay notbepossib leto appl y
the relea sedparking brake.
X Ifthis isthe case, onlypark thevehicle on
level ground andsecure itto prevent itroll-
ing awa y.
X Shift theautoma tictransmission toposition
005D.
It may notbepossib leto relea sean appl ied
parking brakeifthe on-board voltageislow or
there isamalfu nction inthe system. Contact a
qua lifiedspecia listworkshop.
The electric parking brakeperforms afunction
test atregul arintervals whilethe engine is
switched off.The sounds thatcanbeheard
whil ethis isoccurring arenormal. 148
ParkingDrivi
ngand parking

The
ECO display consistsof three 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
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 active 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.
In urban trafficand stop- start traffic,drive pro-
gram Cis recomm ended.
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 196).
Further informationonthe ECO display
(Y page 195). 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. 152
Driving
tipsDriving andparking

Cru
isecont rollever 0043
Tostore thecur ren tspee dor ahigh er
spee d
0044 Tostore thecur ren tspee dor calls upthe
last store dspee d
0087 Tostore thecur ren tspee dor alower
spee d
0085 Todeac tivate cruise control
When youactivat ecr uise control, thest ore d
spee dis sho wninthemult ifunction displ ayfor
fiv esec onds. The spee dis then perm anently
displ ayed inthest atus indicat ortoget her with
th e00B2 symbol.
In veh icleswit hasegm entcir cle inthespee d-
ome ter, thesegm ents bet ween thecur ren tly
st ore dspee dand theen dof thesegm entcir -
cle light up.
St ori ng, maintaini ngand callin gup a
spe ed St
ori ng and maintaini ngaspe ed
X Ac cel erat eth eveh icle tothedesir edspee d.
X Briefl ypres sth ecr uise control leve rup 0043
or down 0085.
X Remo veyour footfr om theacc eler ator
pedal.
Cruis econ trol isact ivat ed. The vehicle auto -
mat icall ymain tainsth est ore dspee d.
You canstore thecur ren tspee difyou are
driv ingfast erthan 20 mph (30km/h).
i Cruis
econ trol may beunab leto main tain
th est ore dspee don uphill gradients.The
st ore dspee dis res umed whenthegrad ient
eve nsout .Cruis econ trol main tainsth e
st ore dspee don down hillgrad ientsby auto -
mat icall yapplyin gth ebrak es. St
ori ng orcalli ngup aspe ed G
WAR
NING
If you callupthest ore dspee dand itdiff ers
fr om thecur ren tspee d,theveh icle acceler -
ate sor dec eler ates.Ifyou donotkn ow the
st ore dspee d,theveh icle coul dacc eler ate
or brak eune xpectedly. Thereis aris kof an
acc iden t.
Pay attentio nto theroad andtraff iccon di-
tio ns bef ore calli ngup thest ore dspee d.If
you donotkn ow thest ore dspee d,store the
desir edspee dagain .
X Briefl ypull thecr uise control leve rto wards
you 0087.
X Remo veyour footfr om theacc eler ator
pedal.
The first tim ecr uise control isact ivat ed, it
st ore sth ecur ren tspee dor reg ulate sth e
spee dof theveh icle totheprev iously store d
spee d.
Set tingaspe ed G
WAR
NING
Keep inmin dth at itmay takeabrie f
mom entunt ilth eveh icle has made thene c-
ess ary adjust men ts.
In cr ease ordec reas eth eset vehicle spee d
to avalue that theprev ailingroad condition s
and legal speedlimit sperm it.Other wise,
sudde nand unexpected acc eler ationor
dec eler ationof theveh icle coul dcaus ean
acc iden tand /or serious injury toyou and
ot her s.
X To
adjust theset speedin1mp hincr e-
men ts(1 km /h incr emen ts):brie flypres s
th ecr uise control leve rup 0043 tothepres -
sure pointfor ahigh erspee d,or down 0085
for alower speed.
Ev ery timeth ecr uise control leve ris
pres sedupordown ,th elast spee dstore dis
inc reas edorreduc ed.
X To
adjust theset speedin5mp hincr e-
men ts(10 km/h incr emen ts):brie fly
pres sth ecr uise control leve rup 0043 past the 156
Driv
ingsyst emsDriv ingand parking

adapt
yourdrivingstyle, norove rride thelaws
of physic s.Ac tiveDis tan ceAssist DISTRO NIC
can nottak eint oacc oun troad, weatherortraf-
fic con dition s.Ac tiveDis tan ceAssist
DI STRO NICison lyan aid. You arerespon sible
for thedist anceto theveh icle infron t,for
veh icle spee d,for brak ingingood timeand for
st aying inyour lane.
Do notuse ActiveDis tan ceAssist DISTRO NIC:
R In road andtraff iccon dition swhic hdo not
allow youtomain tainacon stant spee d,e.g .
in heav ytraff icor on wind ingroads
R on slippe ryroad surfaces .Br akin gor acc el-
erat ingcoul dcaus eth edriv ewheels tolose
tr act ion and theveh icle coul dth en skid
R In poor visibilit y,e.g .due tofog ,heav yrain
or snow
Ac tiveDis tan ceAssist DISTRO NICmay not
det ect narrow vehiclesdriv inginfron t,e.g .
mot orcycles ,or veh iclesdriv inginast agger ed
for mat ion.
In part icular ,th edet ection ofobst aclescan be
impair edif:
R Ther eis dirt onthesen sorsor anyt hingelse
cov erin gth esen sors
R Ther eis sn ow orheav yrain
R Ther eis int erf eren cebyother radar sources
R Ther eare stron gradar reflec tions,for exam -
ple inpark inggarag es
If Ac tiveDis tan ceAssist DISTRO NICnolonger
det ectsa veh icle infron t,Dis tan cePilot
DI STRO NICmay unexpectedly acceler ate to
th espee dstore d.
This spee dmay:
R Be toohigh ifyou aredrivinginatur nin g
lane oran exitlane
R Be sohigh when drivingintherigh t-han d
lane that you overtake vehiclesin theleft -
han dlane
R Be sohigh intheleft lane that you pass
veh iclesdriv ingontherigh t
If th ere isach ang eof driv ers,advis eth enew
driv erofthespee dstore d. Cru
isecontr ollever Cruise
control leve r
0043 Tostore thecur ren tspee dor ahigh er
spee d
0044 Toset aspec ified minimum distance
0087 Tostore thecur ren tspee dor call upthe
last store dspee d
0085 Tostore thecur ren tspee dor alower
spee d
0083 Todeac tivate ActiveDis tan ceAssist
DI STRO NIC
Activ ating Activ eDist ance Assist
DISTR ONICand storin g,ma intaini ng
and callin gup aspeed Imp
ortant safety notes
! When
ActiveDis tan ceAssist DISTRO NIC
or theHOL Dfun ction isact ivat ed, theveh i-
cle brak esauto matically incer tain situa-
tio ns.
To avoid damage totheveh icle,deac tivate
Ac tiveDis tan ceAssist DISTRO NICandthe
HOL Dfun ction inthefoll owin gor simi larsit-
uatio ns:
R when towing theveh icle
R in thecar wash
To act ivat eAc tiveDis tan ceAssist DISTRO NIC,
th efoll owin gcon dition smust befulf illed:
R theeng inemust bestart ed. Itmay takeup
to two minutesof driv ingbefo reActiveDis -
tan ceAssist DISTRO NICisready foruse.
R theelec tric park ingbrak emust berele ased.
R ES P®
must beact ive, butnotint erv ening.
R Ac tivePark ingAssist must notbe act ivat ed.
R thetrans miss ionmust beinposit ion005B. Driv
ingsyst ems
159Drivingand parking Z

Selec
tingthedrive progra m
All vehicles (exceptAMG vehicles ):Act ive
Distanc eAssist DISTRONIC supportsasporty
driving stylewhen youhave selected theSor
S+ drive program (Ypage 133). Acceleration
behind thevehicle infront ortothe setspeed
is then noticeably moredynamic. Ifyou have
selected theCor Edriving program, thevehi-
cle accelerates moregently. Thissettin gis
recommen dedinstop-and- starttraffic.
AMG vehicles :Act ive Distanc eAssist
DISTRONIC supportsasporty driving style
when youhave selected theSor S+ orMdrive
program (Ypage 132). Acceleration behind
the vehicle infront ortothe setspeed isthen
notic eably moredynamic. Whenyouselect the
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.
i When
youchange lanes,Active Distanc e
Assist DISTRONIC monitorsthe left lane on
left-hand- drivevehicles orthe right laneon
right-han d-drivevehicles.
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. Afteratime, theelectric parking brake
secures thevehicle andrelieves theservice
brake.
Depending onthe specified minimum distance,
your vehicle willcome toastandst illat asuffi- cient
distance behindthevehicle infront .The
specified minimum distanceisset using the
cont rolonthe cruise controllever.
The electric parking brakesecures thevehicle
automatically ifAct ive Distanc eAssist
DISTRONIC isactivated and:
R the driver's doorisopen andthedriver's
seat beltisunfastened
R the engine isswitched off,unless itis auto-
matically switchedoffbythe ECO start/
stop funct ion
R asystem malfunction occurs
R the power supply isnot sufficient
If amalfunction inthe electric parking brake
occurs, thenthetransm issionmayalsobe
shifted intoposition 005Dautomatically.
Setting aspeed Keep
inmind thatitmay take abrief moment
until thevehicle hasaccelerated orbraked to
the speed set.
X To
adj ust the setspeed in1mph incre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres-
sure point forahigher speed, ordown 0044
for alower speed.
Every timethecruise controllever is
pressed upordown, thelast speed stored is
increased orreduced.
X To
adj ust the setspeed in5mph incre-
ments (10km/h increments): briefly
press thecruise controllever up0043 past the
pressure pointforahigher speed, or
down 0044for alower speed.
Every timethecruise controllever is
pressed upordown, thelast speed stored is
increased orreduced.
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 162).
The specified minimum distancecanbe
changed whileActive Distanc eAssist
DISTRONIC isswitched onoroff. Driving
systems
161Drivingandparking Z

Deact
ivating Act ive Dist ance Assi st
DIST RONIC Crui
secontro llev er
The reare severalways todeac tivat eAc tive
Di stanc eAs sis tDI ST RON IC:
X Brief lypre ssthecr uise contro llev erfor-
ward s0043.
or X Brak e, unl ess theveh icle isstat ion ary.
Whe nyou deac tivat eAc tive Distanc eAs sis t
DI ST RON IC,theAct ive DistanceAssist Act
ive DistanceAssist
Off Off
messageappe arsonthemult ifunction dis-
play forappr oximat elyfivesec onds.
i The
lastspeedstor ed rem ainsst or ed unt il
you switchoffth een gin e.
i Ac
tive Distanc eAs sis tDI ST RON ICisno t
deac tivat ed ifyou depr esstheacc eler ator
peda l.If you acceler ateto overt ake, Ac tive
Di stanc eAs sis tDI ST RON ICadj ust sth eveh i-
cl e's spe edtothelast speedstor ed after
you havefin ish ed overt aking.
Ac tive Distanc eAs sis tDI ST RON ICisaut omati-
cal lydeac tivat ed if:
R you engage theelec tric par king bra keorif
th eveh icle isaut omatically securedwit hth e
elec tric par king bra ke
R ES P®
inte rven es oryou deac tivat eES P®
R thetrans mis sionis in pos ition 005D, 005Eor005C
R you pull thecr uise contro llev ertoward syou
in order topull away andthefron t-
pass enger dooris ope n
R you activat eAc tive Par king Assis t
R theveh icle issk iddi ng
If Ac tive Distanc eAs sis tDI ST RON ICisdeac ti-
vat ed aut omatically, youwillhear awarn ing
to ne .The Active DistanceAssist Off Act
ive DistanceAssist Off mes
sagewill appe aron themult ifunction dis-
play forappr oximat elyfivesec onds.
Ti ps for drivin gwit hAct ive Dist ance
Assis tDIST RONIC Gen
eral not es
The follow ing co ntain sdes cript ion sof certain
ro ad and traff icco nd ition sin whic hyou mus t
be par ticul arly atte nt ive .In suc hsit uat ions,
bra keifne cessa ry.Active Distanc eAs sis t
DI ST RON ICwill then be deac tivat ed.
Cor nering, goin gint oan dcom ingout of
a bend The
abilityof Active Distanc eAs sis t
DI ST RON ICtodet ectveh icles when corneri ng
is lim ited. Your vehicle may brakeune xpec t-
edly orlate.
Ve hic les trav elin gon adi ffer ent line Ac
tive Distanc eAs sis tDI ST RON ICmay not
det ectveh icles that are notdri vin gin themid -
dle oftheir lane.The distanc eto theveh icle in
fr on twill betoosho rt. Dri
ving systems
163Dr ivi ng andparki ng Z

In
aspeed rangefrom0-37 mph
(0 -60 km/h ),Active Steering Assistfocuses
on the vehicle infront, taking intoaccount
lane markings, e.g.when followingvehicle sin
a traffic jam.
At speed sof more than37mph (60km/h),
Active Steering Assistfocuses onclear lane
markings (leftandright), onlyfocusing onthe
vehicle infront ifdetected lanemarkings are
not present atspeed sof up to80 mph
(130 km/h).
If these conditions arenot present, Active
Steering Assistcannot provide assistance.
Active Distance AssistDISTRONIC mustbe
active inorder forthe function tobe avai lable.
Important safetynotes
Active Distance AssistDISTRONIC withActive
Steering Assistcanneither reducetherisk of
an accident ifyou failtoada ptyou rdriving
style, noroverride thelawsof phys ics.Itcan-
not take intoaccount road,weather ortraffic
conditions. ActiveDistance AssistDISTRONIC
with Active Steering Assistisonly anaid.You
are responsib lefor the distance tothe vehicle
in front, forvehicle speed,for braking ingood
time andforstayi nginyou rlane.
Active Distance AssistDISTRONIC withActive
Steering Assistdoesnotdetect roadandtraf-
fic conditions anddoes notdetect allroad
users. Ifyou arefollow ingavehicle whichis
driving towards theedge ofthe road, your
vehicle couldcome intocontact withthecurb
or other roadbounda ries.Beparticul arly
awa reofother roadusers, e.g.cyclists, that
are directly nexttoyou rvehicle .
Obstacles suchasreflector postsinthe lane
or projecting outinto thelane arenot detec-
ted.
An inapp ropria testeering intervention, e.g.
after youhave intentionally drivenoveralane
marking, canbecorrected atany time ifyou
steer slightlyinthe opposi tedirection.
Active Distance AssistDISTRONIC withActive
Steering Assistcannot continuously keepyour
vehicle inlane. Insome cases, thesteering
intervention isnot sufficie ntto bring thevehi-
cle back tothe lane. Insuch cases, youmust
steer thevehicle yourself toensure thatit
does notleavethe lane. The
supp ortprovide dby the system canbe
impa iredif:
R there ispoor visibility, e.g. due toinsuffi-
cient illuminatio nof the road, ordue to
snow, rain,fogorheavy spray
R there isglare ,e.g. from oncoming traffic,
the sun orreflection fromother vehicle s
(e.g. ifthe road surface iswet)
R the windshi eldisdirty, fogged up,dama ged
or covered, forinstance byasticker, inthe
vicinity ofthe camera
R there arenolane markings, orseveral
unclea rlane markings arepresent, e.g.
arou ndconstruction sites
R the lane markings areworn away,dark or
covered up,e.g. bydirt orsnow
R the distance tothe vehicle infront istoo
short andthus thelane markings cannotbe
detected
R the lane markings changequickly, e.g.lanes
branch off,cross oneanother ormerge
R the road isnarrow andwindi ng
R there arehighl yvaria bleshade conditions
on the roadw ay
The system isswitched topassi veand nolon-
ger assi stsyou byperforming steeringinter-
ventions if:
R you actively changelane
R you switch onthe turn signal
R you take yourhands offthe steering wheel
or do not steer foraprolonge dperiod of
time
i Once
youhave finished changing lanes,
Active Steering Assistautoma ticallyreacti-
vates.
Active Steering Assistcannot provide assis-
tance:
R on very sharp corners
R when aloss oftire pressu reor adefective
tire has been detected anddispl ayed
Observe theimportant safetynotesonActive
Distance AssistDISTRONIC (Ypage 158).
The steering interventions arecarried outwith
a limi ted steering moment. Thesystem
requi resthe driver tokeep hishands onthe
steering wheelandtosteer himsel f.
If you donot steer yourself orifyou take your
hands offthe steering wheelforaprolonge d
period oftime, thesystem willfirst alertyou
with avisua lwarning. Asteering wheelsymbo l Drivi
ngsystems
165Drivingand parking Z