
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

&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

Thestar terb atter ymustbec hargedint hefol‐
lowing situations:
Rth ev ehicle's period out of use mus tbe
ex tended.
Rth eBattery Charge Insufficient for Standby
Mode messag eappear sinthe multimedia
sy stem displa y.
% Standb ymode is automaticall ydeactivated
when thei gnition is switched on.
Ac tivatin gordeactivatin gstandb ymode
Multimedi asystem:
,Vehicle.î Vehicle
Settings.Standby Mode
#Ac tivate Oor deacti vate ª thef unction.
When youa ctivat et he function,ap romp t
appears.
#Select Yes.
St andb ymode is activated.
Driving and driving saf etys ystems
Driving sy stems and your responsibility
Yo ur vehicle is equipped wit hdriving sy stems
whic hassis tyou in driving, parking and maneu‐
ve ring thev ehicle. The driving sy stems ar eaids
and do no trelie veyouofy ourresponsibility .Pay
attention tothet raffic condition satall times
and inter vene when necessary .Beawareofthe
limitation sregarding thes afeu se of these sys‐
te ms.
Fu nction of ther adar senso rs
Some driving and driving safe ty systems use
ra dar sensor stomonitor thea reainf ront of,
behind or next tothev ehicle (depending on the
ve hicle's equipment).
Depending on thev ehicle's equipment, ther adar
sensors arei ntegrated behind theb umpers
and/or behind ther adiator grill. Keep these
parts free of dirt, ice and slush .The sensors
mus tnotbe co vered, fore xamp leby bicycle
ra ck s, ove rhanging loads or radar-reflecting
st icke rs.F ollowing an impact and in thee vent of associated damage
,whic hm aynotbev isible, to
th eb umper sorradiator grille, ha vethef unction
of ther adar sensors checkedataq ualified spe‐
cialis tworks hop. The driver assis tance sy stem
ma ynol onger workproperly.
Overvie wofdriving and driving saf etys ys‐
te ms
In this section, youw illfind informatio nabout
th ef ollowing driving sy stems and driving saf ety
sy stems:
R360° Camer a(→page177)
RABS ( Anti-lo ckBra king Sys tem)
(→pag e148)
RDis tance Pilo tDISTRONIC (→page 159)
RAIR BODY CONTROL (→pag e169)
RActiveB rake Assi stwit hc ross-traf ficf unction
(→page 152)
RAc tiveL aneK eeping Assis t(→page190)
RATTENTION ASSIS T(→page184)
RBA S(Bra keAssist System) (→pag e148)
Driving and parking 14
7

&WARNING Risk of an accident caused by
limited de tection per form anc eofA ctive
Brak eAssist
Ac tiveB rake Assi stcanno talway sc lear ly
identify object sand comple xtraf fics itua‐
tions.
In such cases,ActiveB rake Assi stmight:
Rgiv eanu nnecessa rywa rning or brak ethe
ve hicle
Rno tg iveaw arning or no tbrake thev ehi‐
cle.
#Alw aysp aycareful attention tothet raf‐
fi cs ituation; do no trely on ActiveB rake
Assi stalone.
#Be ready tobrak eand take evasive
action if necessar y.
Alsoo bserve thes ystemb order sofA ctiveBrake
Assi st.
The individua lsubfunctions ar eavailable in
th ef ollowing speed ranges:
Distance warning function
The dis tance warning function issues awarning
at speeds:
RFr om appr oximatel y18m ph (30 km/h), if
ove rseveral seconds thed ista nce main‐
ta ined tothev ehicle tr aveling in front is
insuf ficient fort he driven speed. The dis‐ ta
nce warning lam pthen lights up in the
instrumentc luster·.
RFr om appr oximatel y4mph (7 km/h), if your
ve hicle is criticall yclose toav ehicle or
pedestrian. An intermittent warning tone
sounds and thed ista nce warning lam plights
up in thei nstrument clus ter·.
Brak eimmediatel yortakee vasiv ea ction,p rovi‐
ded it is saf etodoso.
Driving and parking 15
3

%It is recommended that youa lway sl ea ve
Ac tiveB rake Assi stswitched on.
The moment of warning or inter ventio ncan be
adjus tedasf ollows:
#Select Active Brake Assist Warning/Brake
Application: Early:y our selection isretained
when thev ehicle is next star ted.
#Select Active BrakeA ssist Warning/Brake
Application: Medium :your selection is
re tained when thev ehicle is next star ted.
#Select Active BrakeA ssist Warning/Brake
Application: Late:y our selection isretained
when thev ehicle is next star ted.
#Select Active BrakeA ssist Warning/Brake
Application: Off:
Ve hicles without Drivin gAssistanc ePack‐
age: The dis tance warning function and the
autonomous brakin gfunction ar edeactiva‐
te d. When thev ehicle is next star ted, the
middles etting is auto matically selected.
Ve hicles with DrivingA ssistancePack‐
age: The dis tance warning function and the
autonomous brakin gfunction ar edeactiva‐
ted. Evasiv eSteering Assis tisunavailable.
When thei gnition is next star ted, them iddle
setting is selected automaticall yand Evasive
St eering Assis tisavailable.
% When ActiveB rake Assi stis deactivated, the
æ symbol appears inthea ssis tance
graphicint he multifunction displa y.
Speed control cruise control
Function of cruise control
Cruise cont rola ccelerates and brakes thev ehi‐
cle automaticall yinorder tomaintain aprevi‐
ously stored speed.
If yo ua ccelerat etoovertake, fore xamp le,the
st ored speed is no tdele ted. If your emo veyour
fo ot from thea ccelerator pedal af tero vertaking,
cruise control will resume speed regulation back
to thes tore ds peed.
Yo uc an operat ecruise cont rolw itht he cruise
control le ver.
If yo uf ail toadap tyour driving style, cruise con‐
trol can neither reduce ther isk of an accident
nor override thel aws of ph ysics. It canno ttake int
oa ccount road, weather or traf ficc onditions.
Cruise control is only an aid. Youa re re sponsible
fo rt he dis tance tothev ehicle in front, forv ehi‐
cle speed, forb raking in good time and fors tay‐
ing in your lane.
Sy stem limitations
Cruise control ma ybeunable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when theg radient evens out.
Do no tuse cruise control in thef ollowing situa‐
tions:
RIn traf fics ituations whi chrequ iref requ ent
ch anges of speed, e.g .inheavy traf fic, on
winding roads.
ROn slippery roads. Accelerating can cause
th ed rive wheels tolose traction and the
ve hicle could then skid.
RWhen visibility is poor.
Driving and parking 15
7

or
#Pressthel eve rbeyo ndthep ressur epoint:
st ored speed is increased =orreduced ?
by 10 mph(10 km/h).
or
#Press and hold le verb eyo ndthep ressure
point :store ds peed is increased =or
re duced ?in10 mph(10 km/h) incre‐
ments.
If cruise control has beend eactivated,thec ur‐
re nt driven speed is adop tedw ith= or?.
% Ifyo ub rake ,d eactivat eESP orifES Pinter‐
ve nes, cruise control is deacti vated.
% When yous wit ch offt he vehicle, thel ast
speed stored is cleared.
Setting thes peed limit forw inte rt ires
Multimedia sy stem:
,Vehicle.î Vehicle
Settings.Winter Tires Limit
#Select thes peed or deactivat ethe function.
Distance Pilo tDISTRONIC
Function of Distance Pilo tDISTRONIC
Dis tance Pilo tDISTRONIC:
RMaintains thes etspeed and accelerates or
decelerates thev ehicle if thed ista nce from
th ev ehicle in front permits.
RAssists youinm aintainin gthe dis tance from
th ev ehicle in front and can bring your vehi‐
cle toas tandstil lifnecessar y.
RBrakesyour vehicle wit hupto50%oft he
maximum possible braking po wer.If greater
decelera tionp erform ance is requ ired, avis‐
ual and acoustic warning is given and you
mus tthen inter vene yourself.
RVe hicles with DrivingA ssistancePack‐
age, Parking Pilo tand COMAND: When
driving in stop-s tart traf fic, thed rive riss up‐
por tedbyane xtended, au tomatic restar tin
traf ficj ams.
RVe hicles with DrivingA ssistancePack‐
age: Responds in urban speed ranges tosta‐
tionar yvehicles (e xcep tb icycles, mo torcy‐ cle
sand pede strians )ifc onditionsa resuf fi‐
cient toenable de tection.
If yo uf ail toadap tyour driving style, Dis tance
Pilo tDISTRONIC can nei ther reduce ther isk of
an accident nor override thel aw sofp hysics.
Dis tance Pilo tDISTRONIC canno ttak ei nto
account road, weather or traf ficc onditions .Dis‐
ta nce Pilo tDISTRONIC is only an aid. Youa re
re sponsible fort he dis tance tothev ehicle in
front, forv ehicle speed,
forb raki
ng in good time
and fors taying in your lane.
If all act ivatio ncondi tionsa remet, youc an acti‐
va te Dis tan ce Pil otDISTRONI Cdurin gaj ourn ey
or while stationar y.When Dis tance Pilot
DISTRONIC is acti vated, as peed is stored which
th ed rive rc an increase or reduce at an ytime.
The speed can be adjus tedb etwe en 15 mp h
(20 km/h) and 120m ph (200 km/h).
Ve hicles with theD riving Assistance Pack‐
age: The speedc an be adjusted between
15 mp h(20 km/h) and 130m ph (2 10km/h).
Ve hicles with DrivingA ssistancePacka ge,
Park ing Pilo tand COMAND: Ifth ev ehicle is
st opped on ahighw ayorah igh-speed major
Driving and parking 15
9

road, thev ehicle follo ws upto30 seconds
behind thev ehicle ahead, without thed rive r
needing tointer vene. If an obst acle is detected
in front of thev ehicle during thed riving-of fpro‐
cedure, atakeo verw arning is given. Acceleration
is reduced, thed rive risg ivenavisual and acous‐
tic warning and mus tstopt he vehicle before
re achingt he obstacle or take evasiv eaction.
Ve hicles with theD riving Assistance Pack‐
age: In conjunction wit hnavigatio nsystems, Dis‐
ta nce Pilo tDISTRONIC pr events prohibi tedo ver‐
ta king on ther ight at speeds over50m ph
(80 km/h) in right-hand traf fica nd overtaking on
th el eftinl eft-side tra ffic on highw aysa nd high-
speed major roads.
If yo ua ctivat et he tur nsignal indicator tochange
lanes, thev ehicle will accelerat emoreb riskly to
th es etspeed under thef ollowing conditions:
RDis tan ce Pil otDISTRONI Cisa ctivated.
RIfth ed riving speed is higher than 45 mph
(70 km/h).
RIf th ed rive ns peed drops belo wthe stored
speed.
RIf th et raffic situation in theo vertakin glane
permitsas afel ane change.
Ve hicles with DrivingA ssistancePacka ge
and Traf ficS ign Assis t:Distanc ePilot
DI ST RO NIC also has theS peed Limit Pilo tfunc‐
tion .This function can be confi gured inthem ul‐
timedia sy stem. If achang eint he speed limit is
de tecte
d and Dis tance Pilo tDISTRONIC is acti va‐
te d, Dis tance Pilo tDISTRONIC assumes this new
speed.
The driven speed is adap tedw hen thev ehicle is
le ve lw itht he tra ffic signs. The speed limit dis‐
pla yint he Instrument Displa yisalway su pdate d
when thev ehicle is le velw itht he tra ffic sign.
If th eD ista nce Pilo tDISTRONIC hasb eenp ut
int op assive mode bypressing thea ccelerator
pedal, onl yspeed limits whic harehigher than
th es etspeed ar eadop ted.
Pulling thec ruise control le verw ills et thed is‐
pla yeds peed limit as thes peed, pr ovided that:
RThe Speed Limit Pilo thas been activated in
th em ultimedia sy stem and
RDis tance Pilo tDISTRONIC hasb eena ctiva‐
te d.
If no speed limit is displa yedw hen thel ever is
operated, thes peed se tbythe driver is adop ted.
Driv eprogram
The DYNA MIC SELECT switc hallows yout o
ch ang ethe driving styleofD ista nce Pilot
DISTRONIC.D epending on whic hdrive program
is selected ,the driving characteristic scan be
ge ared towa rdsf uel econom y,comfor tor
dynami cperform anc e(
→pag e134).
Sy stem limitations
Dis tance Pilo tDISTRONIC is acti veinthe0 mph
(0 km/h) to120m ph (200 km/h) speed range.
Ve hicles with theD riving Assistance Pack
‐
age
: Dis tance Pilo tDISTRONIC is acti veinthe
0m ph (0 km/h) to130m ph (2 10km/h) speed
ra nge.
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
Rin sno w,rain, fog, heavy spr ay,ift hereis
gl are, in direct sunlight or in greatly varying
light conditions.
16 0
Driving and pa rking

theç symbol is displa yedc yclicall ywhen the
ve hicle is ready topull away.
Ve hicles with Spee dLimit Pilo t:Ifas peed
limitisa utomatical lyadop ted, this is shown as
th es tore ds peed wit hthe ê symbol.
Operating Distance Pilo tDISTRONIC
&
WARNING Risk of accident if de tection
function of Dis tance Pilo tDISTRONIC is
impaired
The Dis tance Pilo tDISTRONIC does not
re act:
RTo people or animals.
RTostationar yobstacles on ther oad, e.g.
st opped or par kedv ehicles (vehicles with‐
out theD riving Assis tance Package).
RTo stationar yobstacles on ther oad, e.g.
st opped or par kedv ehicles, if conditions
ar en otsuf ficient toenable de tection
(vehicle switht he Driving Assis tance
Pa ckage).
RTo oncoming vehicles and crossing traf‐
fi c.
As aresult, Dis tance Pilo tDISTRONIC may
nei ther giv ewarning snor inter vene in such
situations.
#Alw aysc arefully obser vethet raffic con‐
ditionsa nd beready tobrak eata ll
times.
& WARNING Risk of accident duetol imi‐
te dd etectability of road user sand traf fic
situations
Dis tance Pilo tDISTRONIC canno talway s
clear lyidentify other road user sand complex
traf fics ituations.
In these conditions ,Dista nce Pilot
DISTRONIC may:
RGi ve an unnecessar ywarning and then
brak ethe vehicle.
RNeither giv eawarning nor inter vene.
RAc celerat eorbrake unexpectedly.
#Continue driving wi thcar eand be ready
to brake, particular lyif Dis tance Pilot
DISTRONIC warnsy ou.
&
WARNING Risk of accident duetoi nsuf‐
fi cient decele ratio nbyD ista nce Pilot
DISTRONIC
Dis tance Pilo tDISTRONIC brakes your vehi‐
cle wit hupto50%oft he maximum possible
braking po wer.If th is decele ratio nisn otsuf‐
fi cient, Dis tance Pilo tDISTRONIC alerts you
wit hav isual and acoustic warning.
#Appl ythe brakes yourself in these situa‐
tion sand tr ytot akee vasiv ea ction.
&
WARNING Risk of accident duetoD is‐
ta nce Pilo tDISTRONIC still being activa‐
te dw hen youl eave thev ehicle
If yo ul eave thed rive r's seat while thev ehicle
is being braked byDis tance Pilo tDISTRONIC
only ,itc anrollaw ay inthef ollowing situa‐
tions:
RIf th er eisam alfunction in thes ystemo r
in thep owe rsupp ly.
16 2
Driving and pa rking