Page 129 of 446

Driving
Switching on thep owe rsupp lyor ignition
using thes tart/ stopbutton
&
WARNING Risk of accident and injury
due tochildren lef tunat tende dint he
ve hicle
If ch ildren ar eleftu nat tende dint hevehicle,
th ey could:
ROpe ndoors,t hereb yendangering other
persons or road users
RGe tout of thev ehicle and be hit by
oncoming traf fic
ROperat evehicle equipment
In addition, thec hildren could also se tthe
ve hicle in motion, fore xamp le,by:
RRe leasing thep arking brake
RShifting thet ransmission out of park
position j
RStartin gthe engine.
#Ne verlea ve children and animals unat‐
te nde dint hevehicle.
#When leaving thev ehicle, alw ayst ake
th eS martK eywit hyou and loc kthe
ve hicle.
#Ke ep theS martK eyout of ther eac hof
ch ildren.
&
WARNING Risk ofexhaus tgas poisoning
Combustio nengines emit poisonous exhaust
ga ses suc hascarbon monoxide. Inhaling
th ese exhaus tgases causes poisoning.
#Ne verlea ve thee ngine running in an
enclose dspace wi thout suf ficient venti‐
lation.
& WARNING Risk offire caused byflam‐
mable material on thee xhaust system
Flammable materials brought in byeither ani‐
mals or environmen talinfluences ma yignite
if th ey come int ocontact wi thhotp arts of
th ee ngine or exhaus tsyst em.
#Therefore, checkr egularly that there
ar enof lammable materials in the
engine compartmen torontheexhaust
sy stem.
Re quirementsRThe SmartK eyis located in thev ehicle and
th eS martK eybatter yisnotdischar ged.
Driving and parking 12
7
Page 130 of 446

#Toswitc hont he powersupp ly:press but‐
to n1 (USA) or 2(Canada )once.
Yo uc an no wactivat et he windshield wiper,
fo re xamp le.
The po wersupp lyis switched of fagain if thef ol‐
lowing condition sareme t:
RThe driver's door is open.
RYoup ress butto n1 (USA) or 2(Canada)
twice.
#To switc hont he ignition: press button1
(USA) or 2(Canada) twice.
The indicator lamps in thei nstrument clus ter
light up.
The ignition is switched of fagain if one of the
fo llowing condition sismet:
RYo udon otstar tt he vehicle within
15 minutes.
RYoup ress butto n1 (USA) or 2(Canada)
once.
St arting thev ehicle
Starting thev ehicle wit hthe start/s topb ut‐
to n
Requ irements
RThe SmartK eyis located in thev ehicle and
th eS martK eybatter yisnotdischar ged.
#Shif tthe transmission toposition jori.
#Depress theb rake pedal and push button 1
(USA) or 2(Canada) once.
#Ifth ev ehicle does no tstart:s witc hoffnon-
essential consumer sand press button 1
(USA) or 2(Canada) once.
#Ifth ev ehicle still does no tstart:s tart the
ve hicle in emer gency operation mode.
Coolin gorheatingthe vehicl einterior before
st arting thej ou rney
If yo us tart thev ehicle via your smartphone, the
pr ev iousl yselecte dclimat econtrol setting is
active.
Befor estarting, mak esure:
RThe legal stipulation sinthe area wher eyour
ve hicle is par kedp ermit engin estartin gv ia
smartphone.
RIt is saf etostart and runt he engine where
yo ur vehicle is par ked.
RThe fuel tank is suff icientlyfilled.
RThe star terb atter yhas been suf ficiently
ch arge d.
12 8
Driving and pa rking
Page 131 of 446

Starting thev ehicle using asmartphone
&
WARNING Risk of crushing or entrap‐
ment duetou nintentional startin goft he
engine
Limbs could be crushed or trapped if the
engine is star tedu nintentionall yduring
service or maintenanc ework.
#Alw ayss ecur ethe engine agains tunin‐
te ntional startin gbefor ecarrying out
maintenance or repair work.
Re quirementsRPark position jis selected.
RThe anti- thefta larms ystemisn otarmed.
RThe panic alar misnotarmed.
RThe hazar dwarning lightsa reswitched off.
RThe engin ehood is closed.
RThe door sareclosed and loc ked.
RThe windo wsand slidings unroof ar eclosed.
#Startt he vehicle using thes martphone:
RYouc an car ryout amaximum of tw oconsec‐
utiv estartin ga ttem pts.
RYo uc an stop thea gain vehicle an ytime.
Securing thee ngine agains tstarting be fore
car rying out maintenance or repair work:
#Switc hont he hazar dwarning lights.
or
#Un loc kthe doors.
or
#Open theh ood.
St arting thev ehicle in eme rgency operation
mode
If th ev ehicle canno tbestarted, thePlace the
Key in the Marked Space See Operator's Manual
displa ymessag eappear sinthe multifunction
displa y.#Makesuret hat stow ages pace 2is em pty.
#Re mo veSmartK ey1 from thek eyring.
#Place Smart Key1 inthes towa ge space 2.
The vehicle will star ta fter as hor twhile.
If yo ur emo veSmartK ey1 from stowage
space 2thee ngine continues running .For
fur ther vehicle starts ho wever,SmartK ey1
mus tbel ocated in stowages pace 2during
th ee ntir ejourne y.
#Have SmartK ey1 checkedataq ualified
specialis tworks hop.
If th ev ehicle doe snotstar t:
#Lea veSmartK ey1 instow ages pace 2.
Drivin gand parking 12
9
Page 132 of 446

#Depress theb rake pedal and star tt he vehicle
using thes tart/s topb utton.
% Youc an also switchon thep ower suppl yor
th ei gnition wit hthe start/ stop button.
Information on Hill StartA ssist
Hill StartA ssisth olds thev ehicle when pulling
aw ay on ahill under thef ollowing conditions:
RThe transmission is in position hork.
RThe electric parking brak eisreleased.
&
WARNING Risk of accident and injury
caused bythev ehicle rolling away
Af teras horttime, Hill StartA ssistnol onger
holds thev ehicle and it can rollaw ay.
#Therefore, swiftl ymove your foot from
th eb rake pedal tothea ccelerator
pedal. Ne vera ttem pttolea vethev ehi‐
cle if it is being held byHillStart Assist.
Driving tips
Note sonb reaking-in anew vehicle
To preser vethee ngine during thef irst
1, 000 mile s(1,500 km):
Rdriv eatv arying road speeds and engine
speeds.
Rdriv ethe vehicle in driv eprogram Cor E.
Rdo no tshif td ow nag ear manually in order to
brake.
Ravo idove rstraining thev ehicle, e.g. driving at
full thro ttle.
Rdo no tdepress thea ccelera torp edalp ast
th ep ressur epoint (kickdown).
Rgradually increase thee ngine speed only
af te r1 ,000 miles (1,500k m).
Please also observ ethe following breaking-in
no tes:
RIn cer tain drivinga nd drivings afet ys ystems,
th es ensor sadjus tautomaticall ywhile acer‐
ta in dis tance is being driven af tert he vehicle
has been delivered or af terr epairs. Full sys‐ te
me ffecti venes sisn otachie vedu ntil the
end of this teach-in process.
RBrak elinings, brak edisksa nd tires that are
either ne worhavebeen replaced onl yach‐
ie ve optimum braking ef fect and grip af ter
se veralh undred kilom eter sofd riving. Com‐
pensat efor ther educed braking ef fect by
applying greaterf orce totheb rake pedal.
Driving tips
& WARNING Risk of accident duet o
object sinthe driver's foot we ll
Object sinthe driver's foot we ll ma yimp ede
pedal tr avelorb lockad epressed pedal.
This jeopardizes theo perating and road
saf etyoft hevehicle.
#Stow all object sinthevehicle securely
so that they canno tget intot he driver's
fo ot we ll.
#Alw aysi ns tallth ef loor mats securely
and as prescribed in order toensure
th at ther eisa lway ss ufficient room for
th ep edals.
130
Driving and pa rking
Page 133 of 446

#Do notuse loose floor mats and do not
place floor mats on topofo ne ano ther.
&
WARNING Risk of accident duet o
unsuit ablefoot we ar
Operatio nofthe pedals ma yberestricted
due tounsuitable foot we ar suc has:
RShoes wit hplatfo rmsoles
RShoes wit hhigh heels
RSlippers
#When driving alw aysw ear suitable
shoes in order tobe able tooperat ethe
pedals safel y.
&
WARNING Risk of accident duetot he
ignition being switched of fwhils tthe
ve hicle is in motion
If yo us wit ch offt he ignition whils tthe vehi‐
cle is in motion saf ety-re leva nt functions will
be restricted or no longer available. This may
ef fect thep owe rsteering sy stem and brake
fo rc eb oosting ,for example.
Yo uw ill need touse considerably mor eforce
to steer and brake.
#Do no tswitc hoffthei gnition whils tthe
ve hicle is in motion.
&
WARNING Risk ofexhaus tgas poisoning
Combustio nengines emit poisonous exhaust
ga ses suc hascarbon monoxide. Inhaling
th ese exhaus tgases causes poisoning.
#Ne verlea ve thee ngine running in an
enclose dspace wi thout suf ficient venti‐
lation.
& DANG ER Risk of fata linjur ydue topoi‐
sonous exhaus tgases
If th et ailpipe is bloc kedors ufficient ventila‐
tio nisn otpossible, poisonou sexhaust gases
suc hasc arbon monoxide ma yenter thev ehi‐
cle. This is thec ase if thev ehicle getsstuck
in sno w,fore xamp le.
#Keep thet ailpipe and thea reaa round
th ev ehicle free from sno wwhen the
engine or thes tationar yheater ar erun‐
ning.
#Open awindo wont he windwar dside of
th ev ehicle toensur eana dequat esup‐
pl yoff resh air.
&
WARNING Risk of accident or injury due
to driving under thei nfluence of alcohol
and drugs
Driving and thec onsum ption of alcohol
and/or drugs ar eanextreme lydangerous
combination. Even small quantities of alcohol
or drugs can compromis eyour reflexe s, per‐
ception and judgment.
The possibility of aserious or evenfatal acci‐
dent is greatl yinc reased when youd rink or
ta ke drugs and drive.
#Do no tdrink or take drugs and driv eor
allo wanyo netodriv ewho has been
drinking alcohol or taking drugs.
Driving and pa rking 13
1
Page 134 of 446

&WARNING Risk of accident duetoa n
ove rheated brak esystem
If yo ur esty our foot on theb rake pedal whilst
driving, theb rake system ma yoverheat.
This increases theb raking dis tance and the
brak esystemm ayfail.
#Ne veru se theb rake pedal as afootrest.
* NO
TEWearing out theb rake linings by
continuously dep ressing theb rake pedal
#Do no tdepress theb rake pedal contin‐
uousl ywhils tdriving.
#To use theb raking ef fect of thee ngine,
shif ttoa lowe rgear in good time.
* NO
TEDama getothed rive trai nand the
engine when pulling away
#Do no twarmupt he engine when the
ve hicle is stationar y.Pull away immedi‐
atel y.
#Avoid high engine speeds and driving at
full thro ttle unti lthe engine has reached
operatingt emperature.
#Do notallowt he wheels tospin.
* NO
TEDama getothec atalytic con verter
due tonon-combu sted fuel
The engine is no trunn ings moot hly and is
misfiring.
Non-combus tedf uel ma ygetintot he cata‐
lytic con verter.
#Onl ydepress thea ccelera torp edal
slightl y.
#Have thec ause rectifie dimmediately at
aq ualified specialis tworks hop.
Limited braking ef fect on salt-treate droads:
Rtheb raking dis tance can increase conside ra‐
bl yd ue tosalt build-up on theb rake disks
and brak elining.
Rmaintain amuchg reater dis tance tothev ehi‐
cle in front. To
preve nt salt build-up:
Rbrak eoccasionally whil epayinga ttention to
th et raffic conditions.
Rcarefull ydepress theb rake pedal at thee nd
of thej ourne yand when startin gthe next
journe y.
ECOstart/s topf unction
Opera tionoft he EC Ostart/ stopfunction
The engine is switched of fautom atical ly:
RIf yo ub rake thev ehicle toas tandstil lin
transmissionp ositionhori.
RIf all vehicle conditions forana utomatic
engine stop ar emet.
The è symbol appear sinthe multifunction
displa ywhen thev ehicle is stationar y.
If th ee ngine is switched of fbythe EC Ostart/
st op function and youo pen thed rive r's door ,a
wa rning tone sounds. The Driver'sDoor Ope n&
Transmission Not in PRiskofV ehicleRolling
Away displaymessage also appear sinthe multi‐
function displa y.
132
Driving and pa rking
Page 135 of 446
The engine isrestar teda utomatically if:
RIn transmission position hori theb rake
pedal is released when theH OLD function is
no ta ctive.
RYous hiftfromt ransmission position j.
RYoue ngager eve rseg ear k.
RYoud epress thea ccelerator pedal.
RYous wit ch todriv eprogram S+.
RAn automatic engine star tisn ecessar y. Deactivating or activating
theE CO start/
st op function
#Press button :.
If indicator lamp ;lightsu p,theE CO start/
st op function is switched on.
ECO display
The EC Odispla ysummarizes thed riving style
from thes tart of thej ourne ytoits completion
and assists youina chievin gthe mos teconomi‐
cal driving style.
Yo uc an influence consum ption if you:
Rdrivew ithp articular care
Rdriv ethe vehicle in driv eprogram E
Robservetheg earshif trecommendations
The inner segment light supgreen and theo uter
segment fills up:
1 moderat eacceleration
Drivinga nd parking 13
3
Page 136 of 446

2gentle deceleration and rolling
3 consis tent speed
The inne rsegment is gr ayand theo uter seg‐
ment em pties:
1 sporty acceleration
2 heavy braking
3 Fluctuation sinspeed
Yo uh ave driven economicall ywhen:
Rthet hree outer segments ar ecomple tely fil‐
led simultaneousl y.
RtheE CO displa yborder lights up.
The additional rang ea chieve dasar esult of your
drivin gstyle in co mparison toad rive rw itha
ve ry sporty driving styleiss hown under Bonus
fr. Start .The rang ed ispl ay ed does no tindicat ea
fi xe dc onsum ption reduction.
DY NA MIC SELECT switch
Function of theD YNAMI CSELECT switch
Use theD YNAMI CSELECT switc htochangethe
fo llowing driv eprograms:
RI( Individual): individualsettings
RS+ (Spor tPlus): particula rlys portyd rivin g
st yle
RS( Sport): sporty driving style
RC( Comfort): comfortable and economical
drivin gstyle
RE(Economy): particularly economical driving
st yle
Depending on thed rive program selected, the
fo llowing vehicle characteristic swillch ange:
RDriv esystem
-Engine and transmission management
-ESP®
-Dis tance Pilo tDISTRONIC
RSuspension
RSteering
RThe availabilityoft he ECOstart/s topf unc‐
tion
Operating theD YNAMI CSELECT switch
#Press DYNA MIC SELECT switch 1forw ards
or backwards.
The driv eprogram selected appea rsinthe
multifunction displa y.
134
Driving and pa rking