ESP MERCEDES-BENZ SLC 2020 Service Manual

ignit
eifinc ontac twith the exhaus tsyst em
or part softhe engin ethat heat up.There is
ar isk offire.
Carry outregular checkstomake surethat
the reare noflamm ableforeign mate rialsin
the engin ecom part men torint he exhaus t
syst em.
Durin gacoldstar t,the engin eruns athigher
speeds toenable thecatalytic convert erto
reach itsoperat ingtem perat ure.Thesound of
the engin emaychan gedurin gthis time.
Autom atic transm ission X
Depr essthebrak epedal andkeep it
depres sed.
X Shif tthe transm ission toposit ion005D.
Tran smiss ionposit iondisplay 005Disshown
in the multif unction display.
i You
canstartthe engin eint ransm ission
posit ion005Dand 005C.
Sta rting procedur ewiththeS ma rtKey To
star tthe engin eusing theSmar tKey inst ead
of KE YLE SS-GO, pulltheStart/ Stop butt onout
of the ignit ionlock .
X Turn theSmar tKey toposit ion0049
(Y page 118)inthe ignit ionlock andrelease
it as soon asthe engin eisr unn ing.
Using KEYLESS-GO tosta rtthee ngine The
Start/ Stop butt oncan beused tostar tthe
vehic lemanually withoutinse rting the Smar t-
Key intot he ignit ionlock .The Start/ Stop but-
ton must beinse rted inthe ignit ionlock and
the Smar tKey must beinthe vehic le.This
mode forstar tingt he engin eoperat esinde-
pende ntly of the ECO start/sto pautom atic
engin estartfunc tion .
X Depr essthebrak epedal andkeep it
depres sed.
X Press theStart/ Stop butt ononc e
(Y page 118).
The engin estarts. Pulling
away
Gener alnotes G
WARN
ING
If the engin espeed isabove theidling speed
and youengag etransm ission position003A
or 0046,t hevehic lecould pullaway sud-
denly. Thereisar isk ofan acc ident .
When engagingtransm ission position003A
or 0046,a lwaysfirmlydepres sthe brak e
pedal anddonot simult aneously accelerat e.
! Change
gearingood timeand avoid spin-
nin gthe wheels. Youcould otherwise dam-
age thevehic le.
Depr esstheaccelerat orcaref ullywhen pulling
away.
The vehic lelock scentrally onceyou have
pulled away.Thelockingknobs inthe doors
drop down.
You canopen thedoors fromt heinsid eatany
tim e.
You canalso deact ivatethe autom aticlocking
feat ure (Ypage 179).
It is only possible toshift thetransm ission
fro mp osition 005Dtothe desired positionifyou
depres sthe brak epedal. Onlythenist he shift
lock released .
i Upshif
tstak eplace athigher engine
speeds afterac old star t.This helps thecat-
alytic convert erto reach itsoperat ingtem -
perat uremore quickly.
Inf ormat iononthe autom aticrelease ofthe
elect ricpark ingbrak e(Ypage 136).
Hill startassist Hill
star tassist helps youwhen pulling away
for ward orinreve rseonanuphill gradien t.It
holds thevehic lefor ashor ttim ea fter you
have removedyour footfromt hebrak epedal.
This gives youenoug htimet om ove your foot
fro mt hebrak epedal tothe accelerat orpedal
and todepres sitb efor ethe vehic lebegin sto
roll. 120
DrivingDriving
andparking

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

Problems
withtheengine Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine doesnot
start. The
HOLD functionorAct ive Distanc eAssist DISTRONIC isactiva-
ted.
X Deactivat ethe HOLD function(Ypage 152)orAct ive Distanc e
Assist DISTRONIC (Ypage 150).
X Try tostart theengine again. The
engine doesnot
start. Thestarter motor
can beheard. R
There isam alfunction inthe engine electron ics.
R There isam alfunction inthe fuel supply .
Before attempt ingtostart theengine again:
X Turn theSmartK eyback toposition 0092inthe ignition lock.
or X Press theStart /Stopbutton repeatedly untilallindicator lampsin
the instrumen tcluster goout.
X Try tostart theengine again(Ypage 119). Avoid excessively long
and frequent attemptstos tart theengine asthese willdrain the
battery.
If the engine doesnotstart after several attempt s:
X Consult aquali fied specialist workshop. The
engine doesnot
start. Youcannot hear
the starter motor. The
on-board voltageistoo low because thebattery istoo weak or
discharged.
X Jump-start thevehicle (Ypage 261).
If the engine doesnotstart despite attemptstoj ump-st artit:
X Consult aquali fied specialist workshop. The
starter motorwasexposed toathermal loadthatwastoohigh.
X Allow thestarter motortocool down forapproximately two
minutes.
X Try tostart theengine again.
If the engine stilldoes notstart:
X Consult aquali fied specialist workshop. The
engine isnot run-
ning smoothly andis
misfiring. There
isam alfunction inthe engine electron icsorinam echanical
componen tofthe engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic con-
verter anddamage it.
X Have thecause rectified immediately ataq uali fied specialist
workshop. Driving
123Drivingandparking Z

0044 Neut
ral
Do not shiftthe transmi ssion to
0044 whiled riving .The automa tic
tra nsmi ssion cou ldothe rwiseb e
da ma ged.
No powe rist ransmi ttedfromt he
eng inetothe drive wheels.
Re leas ing the brakepedalw illa llow
yo ut om ovet he veh iclef reely, e.g .
to push itor tow it.
If ESP ®
is de acti vated orfaulty: shift
the transmi ssion topositio n0044 if
the vehiclei sind angero fskidd ing ,
e.g .onicy roa ds.
! Co
asting inneu tral005C may
cau sedama getothe drive train. 003A Dri
ve
The automa tictransmi ssion
cha nge sgeara utoma tically. All
for wa rdgearsa reavailabl e. Dri
ving tips
Ch ang ingg ear The
automa tictransmi ssion shifts thro ught he
ind ividu alge arsa utoma ticallyw henitisi n
tra nsmi ssion positio n005B.T hisa utoma ticgear
shi fting behavio risd eterm inedb y:
R the selecte ddrive pro gram
R the positio no fthe acce lera tor pedal
R the roadspeed
Ac celerator pedalposition Yo
ur sty leof dri ving influences howtheauto-
ma tic transmi ssion shifts gear:
R little thro ttle:early up shi fts
R mor ethro ttle :lat eu pshifts Ki
ck dow n Use
kickd ownfor ma xim um accelera tion.
X Dep ressthe acc elera tor pedalbeyond the
pre ssu repoint.
The automa tictransmi ssion shifts toalow er
ge ar dependi ng on the enginespeed.
X Eas eoffthe accelera tor pedalonce the
de sired speedisrea che d.
The automa tictransmi ssion shifts back up. Dri
veprog rams
Dri veprog ramC(Comfo rt) In
city traffica nd stop -starttra ffic, dri ve pro -
gra mCis reco mme nded.
Driv eprogra mCis cha racteri zedbythe follow-
ing :
R the vehicled elive rscomf ortable, eco nomi cal
ha ndl ing characteri stics.
R the vehiclep ulls aw ay mor egently in
for wa rdand revers egears,u nless theaccel-
era tor pedalisd epresse dfully.
R the vehicleh asimp roveddriving stability,
for exa mpl eonslipper yroads urfaces .
R op tima lfue lcons umption resulting fromt he
au toma tictransmi ssion shifting upsoo ner.
The vehiclei sd riven inthe lowe ngine spee d
ra nge and thewheelsarel esslikel yt os pin.
R thes uspe nsi on exh ibits comf ortabled amp-
ing setti ngs(ada pti ve dampi ngsystem only
in veh icles with AMG RIDE CONTR OLsports
su spe nsion) .
R the stee ring exhibits comf ortables tee ring
cha racteri stics.
Dri veprog ramS(Sport) Driv
eprogra mSis cha racteri zedbythe follow-
ing :
R the vehiclee xhibits spo rtydriving character-
is tics .
R the vehiclep ulls aw ay infirst gear.
R the automa tictransmi ssion shifts uplater.
The fuel cons umption possi blyb eing highe r
as aresulto fthe later automa tictransmi s-
si on shiftpo ints . 12
8 Au
tomati ctrans missionDr ivi ng andp arki ng

The
temporary settingisactive foracertain
amount oftime. Under certaincondit ions,the
minimum amountoftime isexten ded,e.g.in
the case oflateral acceleration ,during overrun
mode orwhen driving onsteep terrain.
X To deactivat e:pull steerin gwheel paddle
shifter 0044and hold itin place.
or X Use thelever toswitch thetrans mission
position.
or X Use theDYNA MICSELECT button tochange
the drive program.
Perma nentsetting X
To activat e:shift theselector leverto005B.
X Press button 0043.
X To deactivat e:press button 0043.
Shifting gears All
vehicles (exceptforMercedes-AMG
SLC 43) X
To shift up:pull steerin gwheel paddle
shifter 0044.
The automatic transmission shiftsuptothe
next gear.
If the maximum enginespeedinthe cur-
rent lyengaged gearisreached andyoucon-
tinue toaccelerate, theautomatic transmis-
sion automatically shiftsupinorder topre-
vent engine damage.
X To shift down: pullsteerin gwheel paddle
shifter 0043.
The automatic transmission shiftsdownto
the next gear.
Automat icdown shiftin goccurs whencoast-
ing.
If the engine weretoexceed themaximum
engine speedwhenshiftin gdown, theauto-
matic transmission protectsagainst engine
damage bynot shiftin gdown.
Mercedes-AMG SLC43
! If
manual gearshifting ispermanent lyacti-
vated, theautomatic transmission doesnot
shift upautomatically evenwhen theengine
limiting speedforthe current gearis
reached. Whentheengine limiting speedis
reached, thefuel supply iscut toprevent
the engine fromoverrevv ing.Always make
sure thattheengine speeddoesnotreach
the red area ofthe tachomet er.There isoth-
erwise arisk ofengine damage. X
To shift up:pull steerin gwheel paddle
shifter 0044.
The automatic transmission shiftsuptothe
next gear.
X To shift down: pullsteerin gwheel paddle
shifter 0043.
The automatic transmission shiftsdownto
the next gear. 130
Automa
tictransmissionDriving andparking

Auto
matic down shifting occurswh en coa st-
ing .
If the enginewereto exce edthe maximu m
eng inespeedwhen shifting down, theauto-
ma tic trans mission pro tects against engine
da ma gebynot shifting down.
Shi ftrec omme ndation Al
lv eh icle s( except for Merc edes-AMG
SL C4 3) The
gearshiftreco mme ndations assist youi n
ad op ting aneco nomi caldriving style.T he rec-
omme ndedgeariss hown inthe multifu nctio n
di spl ay.
X Shi ftto reco mme ndedgear0044 acco rding to
gea rshiftreco mme ndation0043 when sho wn
in the multifu nctio ndispl ay ofthe instru-
ment cluster .
Merc edes-AMG SLC4 3 The
gearshi ftreco mme ndations assist youi n
ad op ting aneco nomi caldriving style.T he rec-
omm endedgear issho wninthe multifu nctio n
di spl ay.
X Shi ftto reco mme ndedgear0044 acco rding to
gea rshiftreco mme ndation0043 when sho wn
in the multifu nctio ndispl ay ofthe instru-
ment cluster .
Ki ck dow n X
For maximu maccelera tio n,de pre ssthe
acce lera tor pedalbeyond thepressu re
po int.
The automa tictrans mission shifts toalow er
ge ar dependi ng on the enginespeed.
X Shi ftba ck up once thedesired speedis
rea che d.
Dur ing kickd own,youc anno tshift gea rsusing
the stee ring wheelp ad dles hifters .
If yo ua pplyfullthro ttle,the automa tictrans -
mis sion shifts uptothe next gearwhent he
ma ximu mengine speedisrea che d.Thi sp re-
vents theenginefrom overrevving. Au
tomati ctransmi ssion
131Dr ivi ng andp arki ng 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

Downh
illgrad ient s !
On
long,steep gradie nts, you mus tred uce
th el oad ontheb rake s.To use engin eb rak-
in g, shi ftto alowe rgear ingoo dtime. Thi s
hel psyou toavo idoverh eatingt he bra kes
and wear ingt hemo utexce ssi vel y.
Whe nmakingu seofthee ngineb raking
ef fect ,iti sp ossib lethat ad rive whee lmay
no tturnf or som etime,e.g. inthec aseo f
sudd enlych ang ingo rslipper yroads urfac e
co nd ition s.Thi scouldcau sedam agetothe
dri ve train .Thist ypeo fdam age isno tc ov-
ere dbythe Mer cedes -Ben zw arrant y.
Chan geinto alowe rgear ingoo dtimeo nlon g
and steep down hillgradie nts. Thi sise spec ially
imp ortant ifth ev ehicle islade n.
Thi salso appli esifyou haveactivat edcruise
co ntro lo rA ctiveD istan ceAssis tD ISTR ON IC.
Hea vyandligh tloa ds G
WAR
NING
If you restyour foot on theb rake peda l
whil edrivin g,theb raking sys temc anover-
heat .Thisi nc rea sest he stopp ingd ista nc e
and canevencause theb raking sys temt o
fail .The re isar isko fana cciden t.
Nev eruse theb rake peda lasaf ootre st.
Nev erdepr esstheb rake peda land the
acc eler ator peda latthe sam etime.
! De
pre ssing theb rake peda lcon stan tly
res ultsine xces sive and premat ure wear to
th eb rake pads .
If th eb rake sh aveb eens ubj ectedt oa heav y
load ,don otstop thev ehicle imm ediately, but
dri ve on foras hortwhil e.Thi sallow sthe air-
flo wt ocoolthe bra kesm oreq uickly.
Wet road s If
you havedriven foral ongt imeinh eav yrain
wit hout braking ,the re may beadelayed reac-
ti on from theb rake sw hen braking fort he first
ti me. Thism ayalso occur afterthev ehicle has
bee nwash edordriven thro ugh deepwater.
You then hav etod epr ess theb rake peda l
mo refirmly. Main tain ag reater dis tanc ef rom
th ev ehicle in fron t.
Af terd rivin go naw etroad orhav ingt he veh i-
cl ew ash ed, brakefirmly whilepayin gattenti on to
thet raffic co nd ition s.Thi sw illwarm upthe
bra kediscs,the reby dryi ngthem morequic kly
and protectingt hema gain stcorrosi on.
Lim ited brak ing performa nce onsalt-
tr eat edroad s If
you drive on salt edroads, alayer ofsalt resi-
due may form ontheb rake discsand brake
pads .Thisc an res ult inas igni fic ant lylon ger
bra king distanc e.
R In order topre ven tany salt build -up,apply
th eb rake so ccasion ally whilepayin gatten-
ti on tothet raffic co nd ition s.
R Care fullydepr ess theb rake peda land the
beg inning and endo faj ourney.
R Main tain ag reater dis tanc et ot he veh icle
ahea d.
Ser vici ngtheb rake s !
The
brakeflui dlevel may betool ow, if:
R ifth er ed bra kewarn ingl amp lightsup in
th ei nstru ment clust erand
R you hear awarningt onew hilet he engin e
is run ning
Obs erveaddit ionalwarn ingm essag esinthe
mult ifunction display.
The brakeflui dlevel may betool ow due to
bra kepad wear orleak ingb rake lines.
Hav ethe bra kesys temc hecked imm edi-
at ely. Consult aqualif iedspecialis twork-
sho ptoa rrang ethis.
! As
theE SP®
sys temo perat es aut omati-
cal ly,thee nginea nd thei gn ition mus tbe
swit ched off( theS martKey mustbeinp osi-
ti on 0092 or0047 inthei gn ition lock),ift he
elec tric par king bra keistested on abraking
dyn amo meter(ma ximum 10sec onds).
Br ak ingt rigg ere dautom atically byESP®
may causesev ere dam agetotheb rake sys -
te m.
Al lc he cksa nd main tenan cewor konthe bra ke
sys temm ustb ec arrie do utataq ualif iedspe-
ci alis tworks hop .
Hav ebrake pads inst alled andbrakeflui d
rep laced ataq ualif iedspecialis tworks hop .
If th eb rake sys temh asonlybee nsubj ectto
mo der atel oad s,you should test thef unction -
alit yofyour brakesa treg ular inte rvals.
In fo rm ation onBAS(Brak eA ssist) (Y page 57). 140
Dri
ving tipsDri ving andp ark ing

Mercedes-Ben
zrecommen dsthat youonly
have brake pads/linings installedonyour vehi-
cle which havebeen approved forMercedes-
Benz vehicles orwhich correspond toan
equival entqual itystandard. Brakepads/
linings whichhavenotbeen approved for
Mercedes-Ben zvehicles orwhich arenot ofan
equival entqual itycould affect yourvehicle's
operating safety.
Mercedes-Ben zrecommen dsthat youonly use
brake fluidthathasbeen specially approved
for your vehicle byMercedes-Ben z,or which
corresponds toan equival entqual itystandard.
Brake fluidwhich hasnotbeen approved for
Mercedes-Ben zvehicles orwhich isnot ofan
equival entqual itycould affect yourvehicle's
operating safety.
High-perf ormance brakesystem
(exce ptMercedes-AMG SLC43) AMG
brake systems aredesigned forheavy
loads andhave componen tswith correspond-
ing properties. Thismay lead tonoise when
braking. Thiswilldepend on:
R Speed
R Braking force
R Ambient condition s,e.g. temperature and
humidity
The wear ofindividual componen tsof the
brake system, suchasthe brake pads/linings
or brake discs, depends onthe individual driv-
ing style andoperating conditions.
For this reason, itis impossible tostate amile-
age that willbevalid under allcircumstan ces.
An aggressive drivingstylewilllead tohigh
wear. Youcanobtain moreinformation onthis
from aqualified specialist workshop.
New andreplaced brakepadsanddiscs only
reach theiroptimum brakingeffectaftersev-
eral hundred kilometers ofdriving. Compen-
sate forthis byapply inggreater forcetothe
brake pedal. Keepthisinmind, andadapt your
driving andbraking accordingly duringthis
break-in period.
Exc essive heavybraking resultsincorrespond-
ingly highbrake wear.Observe thebrake sys-
tem warning lampinthe instrumen tcluster
and note anybrake status messages inthe
multifunction display.Especially forhigh per-
formance driving,itis important tomaintain
and have thebrake system checkedregularly . Driving
onwet roads
Hydr oplaning If
water hasaccumulated toac ertain depthon
the road surface, thereisad anger ofhydro-
planing occurring.
For this reason, inthe event ofheavy rainorin
condition sinw hich hydropla ningmayoccur,
you must driveinthe following manner:
R lower yourspeed
R avoid ruts
R avoid sudden steering movement s
R brake carefully
Driving onflooded roads !
Do
not drive through floodedareas.Check
the depth ofany water before driving
through it.Drive slowly through standing
water. Otherwise, watercouldenterthe
vehicle interior orengine compartmen t.It
can then damage theengine's orautomatic
transmission' selectronic componen ts.It
can also besucked inby the engine's air
intake connection andcause engine dam-
age. Winter
driving G
WARNING
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 andaccidents.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface. G
DANGER
If the exhaust pipeisblocked oradequ ate
ventilation isnot possible, poisonous gases
such ascarbon monoxide (CO)mayenter
the vehicle. Thisisthe case, e.g.ifthe vehi-
cle becomes trappedinsnow. Thereisar isk
of fatal injury.
If you leave theengine orthe auxilia ryheat-
ing running, makesuretheexhaust pipeand
area around thevehicle areclear ofsnow. Driving
tips
141Driving 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