change time MERCEDES-BENZ M-Class 2012 W166 Owner's Manual

Welc
ometothe world ofMerce des-Ben z
Before youdrive off,please famil iarize
you rself withyourvehicle andread this
manual, especially thesafety andwarning
not es. This willhelp youtoobtain the
maximum pleasurefromyourvehicle and
avoid endanger ingyourself andother s.
The equipment ormodel designation ofyour
vehicle maydiffer accordingto:
R model
R order
R count ryvariant
R availabili ty
Mercedes- Benziscon stan tlyupdating its
vehicles tothe stateof the art.
Mercedes- Benztherefore reserv esthe right
to introduce changes inthe following areas:
R design
R equipment
R tec hnical features
Therefor e,you cann otbase anyclaims onthe
illustration sor tex tcont ent inthis Operator's
Manual.
The following areintegr alcompon entsofthe
vehicle:
R Operator's Manual
R Servic eBooklet
R Equipment -dependentsupplem ents
Kee pth ese documen tsinthev ehicle atall
times. Whenyousellthevehicle, alwayspass
the documen tson tothe new owner.
The technical documen tationteamat
Daimler AGwishes yousafe andpleasant
moto ring.
Mercedes- BenzUSA,LLC
Mercedes- BenzCanada, Inc.
AD aimler Company
1665841581
É1 665841581ÀË Í

The
SRS compon entsare inoperational
readiness whenthe6 SRSwarning lamp
is not litwhile theengine isrunnin g. G
WARNIN
G The
SRS self-c heck hasdetect eda
malfunct ionifthe 6 SRSwarning lamp:
R does notcome onatall
R fails togo out approximately 4secon ds
after theengine wasstart ed
R comes onafter theengine wasstart edor
while driving
For your safety, Mercedes- Benzstrongly
recom mends thatyouhave thesystem
check edassoon aspossible atan authorized
Mercedes- BenzCenter .Othe rwise the SRS
ma ynot beacti vated when itis nee dedin an
acc ident, which cou ldres ultins erious orfatal
injury. TheSRS might alsodeploy
unexpec tedlyandunnec essarily whichcould
also result ininjury.
In addition, improper workonthe SRS creat es
a risk ofrender ingthe SRS inoperat iveor
causing unintended airbag deployment. Work
on the SRS must theref oreonly beperform ed
by qualified technician s.Contac tan
auth orizedMer cedes-Ben zCent er.
If it is neces sarytomodify anair bag system
to accomm odateaperson withdisabilities,
con tact anauthorized Mercedes-BenzCenter
for details. USAonly: CallourCustomer
Assist anceCenter at1-8 00-FOR-ME RCedes
(1-8 00-367- 6372 )for details.
Safet yguidel inesfor seat belts,
Emerge ncyTensi oningDevic es(ETDs)
and airbags G
WARNING R
Damag edsea tbelts orseat belts thathave
been subject edtostres sin an acciden t
must bereplaced. Theiranchor ingpoint s
must alsobecheck ed.Only useseat belts inst
alled orsupplied byan authorized
Mercedes- BenzCenter .
R Air bags andpyrotec hnicEmer gency
Tension ingDevic es(ETD s)con tain
perchlor atematerial, whichmayrequire
special handling andregard forthe
enviro nment.Check yournation aldisposal
guidelines. Californiaresidents,see
www.dtsc.ca .gov/HazardousWast e/
Perchlora te/index.cfm.
R Air bags andETDsare designed tofunc tion
on aone- time- onlybasis. Anairbag orETD
that hasdeployed mustbereplaced. PRE-
SA FE®
has electr icallyoperated reversible
belt tensioners inaddition tothe
pyrotec hnicETDs.
R Do not pass seatbelts oversharp edges.
They could tear.
R Do not make anymodificat ionthat could
change theeffec tivenessofthe seat belts.
R Do not bleach ordye seat belts asthis may
severely weakenthem.Inacrash theymay
not beable toprovide adequate protection.
R No modificat ionsofany kind maybemade
to any compon entsor wiring ofthe SRS.
R Do not change orremove anycompon ent
or part ofthe SRS.
R Do not installadditional trimmaterial, seat
cover s,badges, etc.tothe:
- padded steering wheelboss
- knee bagcovers
- front -passenger airbag cover
- outer sideoffront seatbolsters
- outer sideofrear bench seatbackrest
seat bolsters
- roof lining trim
R Do not install additional electrical/
electron icequipment onornear SRS
componen tsand wiring.
R Keep areabetween airbags andoccupant s
free ofobject s(e.g. packages, purses,
umbrellas, etc.).
R Do not hang items suchascoat hangers
from thecoat hooks orhandles overthe Occupant
safety
39Safety
Z

Ac
hild inarear-facing childrestraint onthe
front passenger seatwillbeseriously
injured oreven killed ifthe front passenger
front airbag inflates.
R Ifyou have toplace achild inaforward-
facing childrestraint onthe front passenger
seat, move theseat asfar back aspossible,
use theproper childrestraint
recommen dedforthe age, sizeandweight
of the child, andsecure childrestraint with
the vehicle's seatbeltaccording tothe
child seatmanufacturer's instructions. G
WARNING Infant
sand small children shouldnevershare
a seat beltwith another occupant. Duringan
accident, theycould becrushed between the
occupant andseat belt.
Ac hild's riskofserious orfatal injuries is
significantly increasedifthe child restraint s
are not properly securedinthe vehicle and/
or the child isnot properly securedinthe child
restraint .
Children toobigforatoddler restraint must
ride inseats usingregular seatbelts. Position
the shoulder beltacross thechest and
shoulder, notface orneck .Abooster seat
may benecessary toachieve properseatbelt
positioning forchildren over41lb(18 kg)until
they reach aheight wherealap/shoulder belt
fits properly withoutabooster.
When thechild restraint isnot inuse, remove
it from thevehicle orsecure itwith theseat
belt toprevent thechild restraint from
becoming aproject ileinthe event ofan
accident .
If an infant orchild istraveling inthe vehicle:
X Secure theinfant orchild withan
appropriate infantorchild restraint
recommen dedforthe child's ageand
weight.
X Make surethattheinfant orchild is
properly securedatall times whilethe
vehicle isin motion . G
WARNING When
leaving thevehicle, alwaysremove the
Smart Keyfrom theignition lock.Always take
the Smart Keywith youand lock thevehicle.
Do not leave children unattendedinthe
vehicle, evenifthey aresecured inachild
restraint system,orwith access toan
unlocked vehicle.Achild's unsupervised
access toavehicle couldresult inan accident
and/or serious personal injury.Thechildren
could:
R injure themselves onparts ofthe vehicle
R be seriously orfatally injured through
excessive exposuretoextrem eheat orcold
R injure themselves orcause anaccident with
vehicle equipment thatcanbeoperated
even ifthe SmartKey isremoved fromthe
ignition lockorremoved fromthevehicle,
such asseat adjustment ,steering wheel
adjustment ,or the memory function
If children openadoor, theycould injure other
persons orget out ofthe vehicle andinjure
themselves orbe injured byfollowing traffic.
Do not expose thechild restraint systemto
direct sunlight. Thechild restraint system's
metal parts, forexample, couldbecome very
hot, andthechild could beburned onthese
parts. G
WARNING Do
not carry heavy orhard object sin the
passenger compartmen tortrunk unles sthey
are firmly secure din pla ce.
Unsecured orimprop erlypositioned cargo
increase sa child 'srisk ofinjury inthe event
of
R strong braking maneuvers
R sudd enchanges ofdirectio n
R an accide nt
Spec ialseat beltretr act or All
seat beltsexc ept thed river's seatbeltare
equ ipped with aspeci alseat beltretrac tor.
When activated, thespecial seatbelt 56
Childr
eninthevehicleSafety

The
KEYLE SS-GO funct ionischanged as
follows:
X To unlock thedriver 'sdoor: touch the
inner surface ofthe door handle onthe
driver's door.
X To unlock centrally: touchtheinner
surface ofthe door handle onthe fron t-
passenger doororthe rear door.
X To lock centrally: touchtheouter sensor
surface onone ofthe door handles. Restoring
thefactor ysettings
X Press the% and& button s
simultaneously forapproximately six
seconds untilthebattery checklamp
flashes twice. Mechanical
key
General notes If
the vehicle cannolonger beunlocked with
the Smart Key,usethemechanic alkey.
If you usethemechanic alkey tounlock and
open thedriver's door,theanti- theft alarm
system willbetriggered (Ypage 68).
There areseveral waystoturn offthe alarm:
X To turnthe alarmoff with the
Smar tKey: pressthe% or& button
on the Smart Key.
or
X Insert theSmart Keyinto theignition lock.
or
X To deactivat ethe alarmwith KEYL ESS-
GO: press theStart/S topbutton inthe
ignition lock.TheSmart Keymust beinthe
vehicle.
or
X Lock orunlock thevehicle usingKEYLE SS-
GO. TheSmart Keymust beoutside the
vehicle. Removing
themechanical key X
Push release catch: inthe direction of
the arrow andatthe same time,remove
mechanic alkey ;from theSmart Key. Smar
tKeybattery
Impor tantsafety notes Have
thebatteries changedataquali fied
specialist workshop. G
WARNIN
G Batt
eries containtoxicsubstances .
Swallowing batteriescanlead toserious
health issues ordeath.
Keep batteries outofthe reach ofchildren.
Seek medical attentionimmediately ifa
battery isswallowed . G
WARNIN
G The
Smart Keybatteries containperchlorate
material, whichmayrequire specialhandling
and regard forthe environ ment.Observe
governm entdisposal guidelines. California
resident s,see www .dtsc.ca.gov/
Haza rdousW aste/Perchlora te/
index.cfm. Sma
rtKey
75Opening/closing Z

G
WARNING Clo
sing theside windo wswith increas edforce
or witho utthe anti-entrapme ntfeatu recoul d
lea dto serio usoreven fatalinjury .Make sure
th at nobody canbecome trapped when
clo singth eside windows.
If aside windowisobst ructeddurin gclo sing
and reopen sagain slightly:
X Imm ediat elyafterthewind owbloc ks,pull
th ecor respon dingswit chagain untilth e
side windowhas closed.
The side windowisclo sed with increas ed
for ce.
If aside windowisobst ructedagain during
clo singand reopen sagain slightly:
X Imm ediat elyafterthewind owbloc ks,pull
th ecor respon dingswit chagain untilth e
side windowhas closed.
The side wind owisclo sed with outtheant i-
ent rapm entfeat ure. G
WAR
NING Pullin
gand holdi ngtheswit chtoclo sethe
wind owimm ediat elyafterithad been blocked
two timeswill caus eth ewind owtoclo se
with outtheant i-entrapm entfeat ure foras
lon gas you hold theswit ch. Slid
ingsunroof Imp
ortant safety notes
Your vehicle may beequippe dwith aslidin g
sun rooforapanorama roofwith power tilt/
sliding panel.Inthe following section, the
term "sliding sunroof"refer sto both types of
sliding sunroof . G
WARN
ING When
openin gor closin gthe sliding sunroof ,
make surethatthereis no danger ofanyone
being harmed bythe openin g/closing
procedur e.
The sliding sunroof isequipped with
automatic operationandtheanti- entrapmen t feature.
Ifthe movem entofthe sliding sunroof
is block edduring theclosin gprocedu re,the
slid ing sunroof willstop andopen slightly.
The sliding sunroof operatesdiffere ntlywhen
the slidingsunroof switch ispresse dand held .
See the"Prob lemswiththesliding sunroof"
section formore details.
The opening/cl osingprocedu reofthe sliding
sunroof canbeimmed iatelyhal ted by
relea singthesliding sunroof switch or,ifthe
slid ing sunroof switch was moved pastthe
resista ncepoint andrelea sed,bymoving the
slid ing sunroof switch inany directio n. G
WARNING The
slidingsunroof ismade outofgla ss. Inthe
event ofan accide nt,the glassmay shatter.
This may resul tina no penin gin the roof.
In avehicle rollover, occupants notwearing
their seatbelts ornot wearing themproperly
may bethrown outofthe openin g.Such an
openin galso presen tsapoten tialforinjury for
occ upants wearing theirseatbelts properly,
as ent irebody parts orportion sof them may
protr udefrom thepassenger compartment.
! Only open thesliding sunroof ifit is free
of snow andice.Other wise, malfunc tions
may occur.
Do not allow anythin gto protr udefrom the
sliding sunroof .Othe rwise, the sealscou ld
be dama ged.
! Thewe ath ercan change abruptl y.Itcou ld
sta rtto rain or sno w.Ma kesure tha tthe
sl id ing sunroo fisclosed whenyouleave the
vehicle. Thevehicle electronics canbe
damage difwater enters thevehicle
interior. i
Resonance
noisescanoccur inaddition
to the usua lairflow noiseswhenthesliding
sunroof isopen. Theyarecaused byminor
pressure fluctuations inthe vehicle interior.
Change theposition ofthe sliding sunroof
or open aside window slightlytoreduce or
eliminate thesenoises. 88
Sliding
sunroofOpening/closing

X
To switcho ff:set the rocker switch tothe
| position.
The interior lighting automatical lyswitches
on ifyou :
R unlock thevehicl e
R open adoor
R remove theSmartKey fromtheignitio nlock
The interior lightisactivated forashort while
when theSmart Keyisremoved fromthe
ignition lock.Youcanactivate thisdelay ed
switch- offusing theon-board computer
(Y page 235).
Manua linterior lighting control X
To switch thefront interior lighting on:
set the rock erswitch tothe c position.
X To switch thefront interior lighting off:
set the rock erswitch tothe | position.
X To switch therear interior lighting on/
off: press theu button .
X To switch thereading lampson/off:
press thep button . Crash-
responsive emergency lighting
The interior lighting isactivated automatically
if the vehicle isinvolved inan accident .
X To switch offthe crash- responsive
emergency lighting:pressthehazard
warning lampbutton .
or
X Lock andthen unlock thevehicle usingthe
Smart Key. Replacing
bulbs Import
antsafety notes
Xenon bulbs If
your vehicle isequipped withXenon bulbs,
you can recogn izethis bythe following: the
cone oflight from theXenon bulbsmoves
from thetop tothe bottom andback again when
youstart theengine. Forthis tobe
observed, thelights mustbeswitched on
before startingthe engine. G
DANGER Xenon
bulbscarryahigh voltage. Youcould
get anelectric shockandbeseriously oreven
fatally injured ifyou touch theelectric
cont acts onXenon bulbs.Therefore, never
remove thecover fromXenon bulbs.
Do not change Xenonbulbsyourself, buthave
them replaced ataquali fiedspecialist
workshop whichhasthenecessary specialist
knowledge andtools tocarry outthework
required.
Mercedes-B enzrecommen dsthat youusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop.
Bulbs andlamps areanimportant aspectof
vehicle safety.Youmust therefor emake sure
that these functioncorrec tlyatall times.
Have theheadlamp settingcheck edregularly .
Other bulbs There
arebulbs otherthantheXenon bulbs
that youcann otreplace. Replaceonly the
bulbs listed (Ypage 115). Havethebulbs that
you cann otreplace yourself changed ata
quali fiedspecialist workshop.
Mercedes-B enzrecomm endsthatyouusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop.
If you require assistance changingbulbs,
consult aquali fiedspecialist workshop.
Do not touch theglass tubeofnew bulbs with
your bare hands. Evenminor contamination
can burn intotheglass surface andreduce
the service lifeofthe bulbs. Always usealint-
free cloth oronly touch thebase ofthe bulb
when installing.
Only usebulbs ofthe correc ttype. 114
Rep
lacingbul bsLights an dwindshield wipers

If
the new bulbstill does notlightup,con sult
a qualified specialist workshop.
Bulbs andlamps areanimport antaspect of
vehicle safety.Youmust therefore make sure
that these function correctlyat all times .
Have theheadlamp settingchec kedregularly. G
WARN
ING Bulbs
andlamps canbevery hot.Youshould
ther efore allowthemtocool down before you
chang ethem .Othe rwise, yo ucou ldbe burned
if yo utou chthe m.
Kee pbu lbsou to fthe reach ofchildren.
Otherwise, theycould damage thebulbs, for
example, andinjure themselves.
Never useabulb which hasbeen dropped.
Such abulb maybreak oreven explode and
injure you.
Halogen bulbsarepressurized andcan
explode whenyouchange them,particularly
if they arevery hot.Youshould therefore wear
eye protect ionand gloves whenyouare
changing them. Overview:
changingbulbs/bulb types
You canchange thefollowing bulbs.Thebulb
type canbefound inthe legend. Halogen
headlamps
: Low-beam headlamp:H755W
; High-beam headlamp:H755W
= Parking lamp/standing lamp:W5W BV
? Side marker lamp:WY5W Tail
lamp
: Brake lamp:P21 W-L Changing
thefront bulbs
Removing andinstalling thecover inthe
front wheel arch You
must remove thecover fromthefront
wheel housing beforeyoucan change the
front bulbs. X
To remove: switchoffthe lights.
X Turn thefront wheels inwards.
X Slide upcover :and liftitout.
X To install: insertcover:again andslide
it downwards untilitengages. Replacing
bulbs
115Lights and windshield wipers Z

Useful
information
i This
Operat or'sManual describesall
models andallstan dard andoption al
equipment ofyour vehicle available atthe
time ofpublication ofthe Operat or's
Manual. Country-specificdiffer encesare
possible. Pleasenotethat your vehicle may
not beequipped withallfeature s
descr ibed. Thisalso applies tosafet y-
related systemsand func tions. i
Please
readtheinfor mation onqualified
specialist workshops(Ypage 25). Br
eaking-in notes The
first 1000 miles (1500 km)
The more youlook after theengin ewhen itis
new, themore satisfiedyou willbewith its
perfor mancein the future.
R Driv eat varying vehiclespeeds andengin e
speeds forthe first 1000miles (1500km)
for this reason .
R Avo idovers trainingthe vehicle duringthis
period, e.g.drivin gat full throttle.
R Change gearingood time, atthe latest
when thetach omet erneedle is⅔o fthe
way tothe red area inthe tachomet er
displa y.
R Do not manually shifttoalower gearto
brake thevehicle.
R Only select shiftranges 3,2or 1when
driving slowly,e.g. inmountainous terrain.
Aft er1000 miles(1500 km),you can increase
the engine speedgraduall yand bring the
vehicle uptofull speed. i
You
should alsoobserve thesenoteson
runnin gin ifthe engine orparts ofthe drive
train onyour vehicle havebeen replaced. i
Always
observe therespect ivespeed
restr iction s. Driving
Import
antsafety notes G
WARNIN
G Make
sureabsolutely noobject sare
obstruct ingthe pedals' rangeofmovemen t.
Keep thedriver's footwell clearofall
obstacles. Ifthere areany floormats or
carpets inthe footwell, makesurethepedals
still have sufficient clearance.
During sudden drivingorbraking maneuvers
the object scould getcaught between the
pedals. Youcould thennolonger brakeor
accelerate. Thiscould leadtoaccident sand
injury. G
WARNIN
G On
slippery roadsurfaces, neverdownshift in
order toobtain braking action.Thiscould
result indrive wheel slipand reduced vehicle
cont rol.Your vehicle's ABSwillnotprevent
this type ofloss ofcont rol. G
WARNIN
G It
is dangerous toshift theautomatic
transm issionoutofparking position Por
neutral position Nifthe engine speedis
higher thanidlespeed. Ifyour footisnot firmly
on the brake pedal, thevehicle could
accelerate quicklyforward orinreverse. You
could losecontrolofthe vehicle andhit
someone orsomethin g.Only shiftintogear
when theengine isidling normally andwhen
your right footisfirmly onthe brake pedal.
! Warm upthe engine quickly. Donot use
the engine's fullperformanc euntil ithas
reached operating temperature.
Only shifttheautomatic transmission to
the desired driveposition whenthevehicle
is station ary.
Where possible, avoidspinnin gthe drive
wheels whenpulling awayonslippery
roads. Youcould otherwise damagethe
drive train. 138
DrivingDriving and parking

Cert
ainengin esyst ems aredesi gned tokeep
th eleve lof pois onous compo nentsin ex haust
fum eswit hin legal limits.
Thes esyst ems onlywork atpeak efficie ncy
when they are main tainedex act lyin
acc ordanc ewit hth eman ufacturer's
spec ifications.Fo rthis reason, allwork onthe
engine mustbecarried outonly byqual ified
and authorized Mercedes-Ben ztechn icians.
The engin esett ings must notbechanged in
any circumstan ces.Furthermor e,all specific
servic ework must becarried outatregular
int ervals andinaccor dance withthe
Mercedes- Benzservic erequirement s.Det ails
can befound inthe Serv iceBook let. Engine
oil
! Vehicles withadiesel particle filter:
If the vehic leismost lydriven forshort
distan ces,itis possible thatmalfun ctions
may occurduring theautomat icclean ingof
the diesel particle filter. This canlead to
engin edamage. Therefore,ifyou frequen tly
drive short distan ces,make suretodrive
on highways orinter- urban roadsfor20
minut esatleast every 310miles (500km). Br
akes
Imp ortant safet ynotes G
WARN
ING On
slippery roadsurfac es,nev erdowns hiftin
order toobtain brakingact ion. This could
result indrive wheel slipand reduce dvehic le
con trol. Your vehic le'sABSwill notpreve nt
this type ofloss ofcon trol. G
WARN
ING Make
surethatyoudonot endan gerother
road users whenyouapply thebrake s. Downhill
gradient s !
Onlong andsteep gradien ts,you must
reduce theload onthe brake sby shift ing
early toalower gear.Thisallows youtotak e
advant ageofthe engin ebrakin geffe ctand
helps avoidoverheatin gand excessive
wear ofthe brake s.
When youtakeadvant ageofthe engin e
brakin geffe ct,a drive wheel maynotturn
for some time,e.g. onaslippery road
surfac e.This could cause damage tothe
drive train. This type ofdamage isnot
cov ered bythe Merc edes- Benzwarrant y.
Hea vyand lightload s G
WAR
NING De
pre ssin gth ebrak epedal constant lyres ults
in ex ces siveand premat urewear tothebrak e
pads.
It may alsocauseth ebrak estoove rheat,
ser iously impairingth eir effect iven ess.Itm ay
th en notb epossible tostop thevehicle in
sufficien ttime toavoid anacciden t.
If the brakes havebeen subject edtoaheavy
load, donot stop thevehicle immediately, but
drive onfor ashort while. Thisallows the
airflow tocool thebrakes morequickly.
Wet roads G
WARN
ING Aft
erdriving inheavy rainforsome time
without applying thebrakes orthro ugh water
deep enough towet brake compon ents,the
first braking actionmaybesomewhat
reduced. Youhave todepress thebrake pedal
more firmly. Maintain asafe distanc efrom
vehicles infron t.
Aft erdriving onawet road orhaving the
vehicle washed, brakefirmlywhilepaying
atten tiontothe traff iccon ditions .This will
warm upthe brake discs, thereby dryingthem
more quickly andprotec tingthem against
corr osion. Driving
tips
159Driving and parking Z

This
style ofdriving prevent s:
R the vehicle fromlifting offthe ground onthe
brow ofahill
R the vehicle fromtraveling tooquickly down
the other side
Driving downhill R
Drive slowly.
R Do not drive atan angle down steep
inclines. Steer into theline offall and drive
with thefron twheels aligned straight.
Otherwise, thevehicle couldslipsidewa ys,
tip and rollover.
R Before tackling steepdownhill gradients,
select shiftrange 1.
R Act ivate DSR. Ifthis isnot sufficient, brake
gently. Whendoingso,make surethatthe
vehicle isfacing inthe direction ofthe line
of fall.
R Check thatthebrakes areworking normally
after along downhill stretch. i
The
special off-road ABS settin genables
a precise, briefandrepeated lockingofthe
front wheels, causing themtodig into the
loose earth. Beaware thatthefront wheels
easily skidacross theground surface if
completely brakedandtherefore losetheir
abili tyto steer. Driving
systems Cruise
control
Import antsafety notes G
WARNING The
cruise controlisaconven iencesystem
designed toassist thedriver during vehicle
operation. Thedriver isand must always
remain responsible forthe vehicle's speed
and forsafe brake operation.
Only usethecruise controlifthe road, traffic,
and weather condition smake itadvisabl eto
travel ataconst antspeed. R
The useofthe cruise controlcan be
dangerous onwinding roadsorinheavy
traffic because condition sdo not allow safe
driving ataconst antspeed.
R The useofthe cruise controlcan be
dangerous onslippery roads.Rapid
changes intire tract ioncan result inwheel
spin andloss ofcont rol.
R Deactivate thecruise controlwhen driving
in fog.
The "Resu me"funct ionshould onlybe
operated ifthe driver isfully aware ofthe
previously setspeed andwishes toresume
this particular presetspeed. G
WARNING The
cruise controlbrakes automatically so
that thesetspeed isnot exceeded.
General notes Cruise
controlmaintains aconst antroad
speed foryou. Itbrakes automatically inorder
to avoid exceeding thesetspeed. Onlong and
steep downhill gradients, especiallyif the
vehicle isladen ortowing atrailer, youmust
select shiftrange 1,2or 3in good time. By
doing so,you willmake useofthe braking
effect ofthe engine, whichrelieves theload
on the brake system andprevents thebrakes
from overheating andwearing tooquickly.
Use cruise controlonly ifroad andtraffic
condition smake itappropriate tomaintain a
steady speedforaprolonged period.Youcan
set any road speed above20mph
(30 km/h). i
Cruise
controlshould notbeactivated
during off-road driving. Driving
systems
167Driving and parking Z