
take ab reak wher enecessar y.Ifyo udon ottake
ab reak and ATTENTION ASSIS Tcontinues to
de tect increasing lapse sinconcentration, you
will be warned again af teram inimu mof
15 minutes.
Youc an ha vethef ollowing status information for
AT TENTION ASSIS Tdispla yedint he assis tance
menu of theo n-boar dcomputer:
RThe lengt hofthe journe ysince thel ast
break.
RThe attention le veld etermined byATTENTION
ASSIS T. if
AT TENTION ASSIS Tisunable tocalculat ethe
attention le vela nd canno tissue awarning ,the
System Suspen dedmessage appears.
If aw arning is given in theI nstrument Displa y,
th em ultimedia sy stem of fers to sear chforar est
area. Youc an select aresta reaa nd star tn aviga‐
tio ntot hisrest area. This function can be activa‐
te da nd deactivated in them ultimedia sy stem.
If AT TENTION ASSIS Tisdeactivated, theé
symbol appear sinthe assis tance graphicint he
Instrument Displa ywhen thee ngine is running.
AT TENTION ASSIS Tisactivated automatically
when thee ngine is re-sta rted. The las tselected
sensitivity le velremain sstore d.
Sy stem limitations
AT TENTION ASSIS Tisactiveint he37 mph
(60 km/h) to124m ph (200 km/h) speed range.
The functionality of ATTENTION ASSIS Tis
re stricted, and warnings ma ybedelayedorn ot
occur at all in thef ollowing situations:RIfyo uh ave been driving forl ess than 30
minutes.
RIf th er oad condition is poor (une venr oad
sur face or po tholes).
RIfth er eisas tron gs idew ind.
RIf yo ua dop tas porty drivin gstyle (hig hcor‐
nering speeds or high ratesofa cceleration).
RIfth eS teering Pilo tfunction of DISTRONIC is
active.
RIf th et ime has been se tincor rectl y.
RIn activ edriving situations, if youc hange
lanes and vary your speedf requ entl y.
The ATTENTION ASSIS Ttiredness or alertness
assessment is dele teda nd restar tedw hen con‐
tinuing thej ourne yinthefollowing situations:
RIf yo us witch offt he engine.
RIfyo uu nfas teny our seat belt and open the
driver's door (e.g. chang edrive rs or take a
break).
Driving and parking 18
5

Newm essages ar eidentified bythe1 symbol
in them ultimedia sy stem's displa yand an audi‐
ble signal.
RThe multimedia sy stem displa ys the100
ne west text message s.
RTheú symbol is displa yedw hen the
mobilep hone's message memoryisfull.
Con figuring thet extm essages displa yed
Multimedia sy stem:
,Phone.Z Options.Open
Messages
#Select ¥.
Am enu wit hthe following option sisshown:
RAll Messages
RNew and Unread Messages
RNew Messages
ROff(The text message sarenotd ispla yed
automaticall y.)
#Select an option. Re
ading text messages
Multimedia sy stem:
,Phone.i Text Message
Re ading atextm essage
#Select atextm essage .
The messag etextisd ispl ay ed.
Using ther ead-aloud function
#Select atextm essage .
#Select¥.
#Select+.
The text message isread aloud.
Composing and sending atextm essage
Multimedia sy stem:
,Phone.i Text Message
#Navigat etot he lef ttwice.
#Select Write New Text Message.
Dictating text
#Select Press to Dictate .
The App fort he dictation function is loaded.
Ifth er ew as no prior Interne tconnection, a
connection is no westablished.
#To star tt he dictation function:p ress thec on‐
troller or touchpad.
#Sa yy our message.
The dictation ends automatically af tery ou
ha ve finished speaking.
Af tert he voice messag ehas been processed,
it is shown as text.
Editin gtext
#Select thew ord.
#Tocal lupt he cor rection menu :press the
controller or touchpad.
The following option sareavailable:
RAd justing thec apitalization of words( if
suppor tedbyt hecharacter set)
RExpanding thec hoice of words
RDel eting thes election
RRecording anew dictation
#Tolea vethem enu: select Done.
Multimedia sy stem 24
3

5Search
6Devices
7Sound settings
8Full screen
9Options
AOpera tor's Manual
Connecting USB devices * NO
TEDama gecaused byhigh temp era‐
tures
High temp eratures can damag eUSB devices.
#Remo vetheU SB device af teru se and
ta ke it out of thev ehicle.
The multimedia connection unit is found inthe
stow agec ompartment unde rthe armres tand
has tw oUSB ports. Depending on thev ehicle
equipment, afurther USB por tislocated in the
stow agec ompartment in thec enter console at
th ef ront.
#Connec tthe USB device totheU SB port.
Pla yable music files ar eplaye do nlyift he
cor responding media displa yisactivated.
% Use theU SB por tshown as çtouse
Ap ple CarPlay™ and An droid Auto™. Selecting
atrack
Multimedia sy stem:
,Media
Vi as kip function
#Toskip backwards or forw ards toa
track: navigat eupord own.
Vi ac urrent trac klists
#Select è.
#SelectCurrent Track List .
#Selectatrack .
Selecting playbac koptions
Multimedia sy stem:
,Media.Z Options
Playing bac ksimilar trac ks
#SelectPlay Simila rTracks.
At rack list wit hs imilar trac ksis created and
pla yedb ack. Pla
ym ode
#Select Playback Mode.
#SelectNormal Track Sequence.
The cur rent trac klistisp laye dint he order it
appear sonthe dat astora ge medium.
#Select Random Mode -Current Playlist .
The cur rent trac klistisp laye dinr andom
order.
#Select Random Mode -Current Medium.
All trac kson thed atas tora ge medium are
pla yedinr andom order.
Pa use and playbac kfunction
Multimedi asystem:
,Media
#Press thet ouchpad or thec ontroller.
#To pause playback: selectÌ.
#Tocontinue playback :select Ë.
Multimedia sy stem 259

Batterydisconnection periods
The AS SYST PLUS service inter vald isplay
can onl ycalculat ethe serviced uedate when
th eb attery is connected.
#Notedown thes ervice due dat edispla yedi n
th ei nstrument displa ybefor edisconnecting
th eb atter y(
→page277).
Engin ecom partment
Activ eh ood( pedestrian pr otection)
Operation of thea ctiv ehood (pedestrian pro‐
te ction)
In cer tain accident situations ,the risk of injury
to pedestrians can be reduced bythea ctuation
of thea ctiv ehood. The rear area of thee ngine
hood is raised byappr oximatel y85m m.
Fo rthe driv etotheworkshop, rese tthe trig‐
ge reda ctiv ehood yourself.Ift he activehood
has been triggered, pedestrian pr otection may
be limited.
Aq ualified specialis tworks hop mus tre-ins tate
th ef ull functionality of thea ctiv ehood. The activ
ehood is no tavailable in all countries.
Re setting thea ctiv ehood
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
#With your handf lat, push down activ ehood
1 inthea reaa round theh inges on bo th
sides (ar rows).
The engine hood mus tengag einp osition.
#Ifth ea ctiv ehood can be raised slightly at
th er ear in thea reaoft he hinges, repeat the
st ep until it engages cor rectl yinp osition.
Opening/closing the engine hood
&
WARNING Risk of accident if thee ngine
hood is unlatched while driving
An unloc kede ngin ehood ma yopen up when
th ev ehicle is in motion and bloc kyour vie w.
#Neveru nlatc hthe engine hood while
driving.
#Befor eevery trip, ensur ethat the
engine hood is latched.
27 8
Maintenance and care

&WARNING Risk of accident and injury
when opening and closing thee ngine
hood
When opening or closing thee ngine hood, it
ma ysuddenl ydropi ntot he end position.
Ther eisar isk of inju ryfora nyo ne in the
engine hood's rang eofm ovement.
#Onlyopen or close thee ngine hood
when ther ea reno persons in the
engine hood's rang eofm ovement.
&
WARNING Danger of burn swhen open‐
ing thee ngine hood
If yo uo pen thee ngine hood when thee ngine
has overheated or during afireint he engine
compartment, youc ouldcome int ocontact
wit hh otgases or other escaping operating
fl uids.
#Befor eopening thee ngine hood, allow
th ee ngine tocool down.
#Inthee vent of afireint he engine com‐
partment, keep thee ngine hood closed
and call thef ires ervice.
&
WARNING Risk of injury duetomoving
parts
Cer tain component sinthe engine compart‐
ment ma ycontinue tomo veor suddenly
mo veagain evenafter thei gnition has been
switched off, e.g. thec ooler fan.
Make sureoft hefollowing befor eperform ing
ta sk sint he engine compartment:
#Switc hthe ignition off.
#Ne vertouc hthe danger zone sur round‐
ing movin gcomponent pa rts, e.g. the
ro tatio na reaoft hefan.
#Re mo vejewe lrya nd watches.
#Keep items of clo thing and hair away
from moving parts.
& WARNING Risk of injury fromtouching
co mp onent parts under voltage
The ignition sy stem and thef uel injection
sy stem workunder high voltage. If yout ouch
component parts whic hareunder voltage,
yo uc ouldreceive an electric shoc k.
#Nevertouc hcomponent pa rtso fthe
ignition sy stem or thef uel injection sys‐
te mw hen thei gnition is switched on.
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
Maintenance and care 27
9

Engine oil
Checkingthee ngine oil le velu sing theo il
dip stick
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
Depending on thee ngine, theo il dipstic kmaybe
ins talled in thee ngine compartmen tindiffe re nt
locations.
Wa itin gtimeb efor echecking theo il le vel:
REngine at normal operatin gtemperature: five
minutes.
REngine no tatnormal operating temp erature
(e.g. thee ngine waso nly star tedb rief ly): 30
minutes.
#Pa rk thev ehicle on aflat sur face.
#Re mo veoil dipstick 1and wipe off.
#Slowl yslide oil dipstick 1intot he guide
tube tothes top, and take it out again af ter
appr oximatel ythree seconds.
ROil le velisc orrect:o il le velisb etwe en 2
and 3.
ROil le veltoo low: oil le velisa t3 or
belo w.
#Ifth eo il le velist oo lo w,add 1.1USq t(1l)o f
engine oil.
To pping up engine oil
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
&
WARNING Risk offire and injur yfrom
engine oil
If engine oil comes int ocontact wi thhot
component parts in thee ngine compart‐
ment ,itmayignite.
#Mak esuret hat no engine oil is spilled
next tothef iller opening.
Maintenance and care 281

#Allow thee ngine tocool of fand thor‐
oughl yclean thee ngine oil from compo‐
nen tparts befor estartin gt he vehicle.
* NO
TEEngine damag ecaused byan
incor rect oil filter ,incor rect oil or addi‐
tives
#Do no tuse engine oil soroilfilters
whic hdon otcor respond tothes pecifi‐
cation sexplicit lyprescribed fort he
service inter vals.
#Do no talter thee ngine oil or oil filter in
order toachie velonger chang einter vals
th an prescri bed.
#Do notuse additives.
#Followt he instructions in thes ervice
inter vald ispla yregarding theo il
ch ange.
* NO
TEDama gecaused bytopping up too
muc hengine oil
Topping up toom uche ngine oil can cause
damag etothe engine or thec atalytic con‐
ve rter.
#Ha ve excess engine oil siphonedo ffat
aq ualified specialis tworks hop.
#Tu rn cap 1counter-clockwise and remo ve
it.
#Ad de ngin eoil.
#Replace cap 1and tur nitclockwise as far
as it will go.
#Chec kthe oil le vela ga in (→pag e281).
Checking coolant le vel
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
&
WARNING Danger of burn sfromh ot
coolant
The engine cooling sy stem is pressurized,
particularly when thee ngine is warm.Ify ou
282
Maintenance and care

openthec ap, youc ould be scalded byhot
coolant spr aying out.
#Le tthe mo torc ool down befor eopening
th ec ap.
#When opening thec ap, wearglove sand
pr otectiv eeyewe ar.
#Slowl yturnt he cap half aturntoa llow
pressur etoescape.
#Park thev ehicle on aflat sur face.
#Chec kthe coolant temp eratur edispla yint he
instrument clus ter.
The coolant temp eratur emustbeb elow
15 8°F( 70 °C).
#Slowly tur ncap 1 counter-clockwise to
re lie ve ove rpressure.
#Continue turning cap 1counter-clockwise
and remo veit.
The coolan tleve lisc orrect:
RIfth ee ngine is cold, up tomar kerb ar2
RIfth ee ngine is warm,upt o0.6 in (1.5 cm)
ove rmarke rb ar2
#If necessar y,add coolant that has been tes‐
te da nd appr ovedbyM ercedes-Benz.
RFurther information on coolant (→pag e347)
Re filling thew indshield washer sy stem
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
&
WARNING ‑Riskoff irea nd injur yfrom
windshield washer concentrate
Wi ndshield washer concentrat eishighly
fl ammable. It coul dignit eifitc omes into
con tact wi thhote ngine component parts or
th ee xhaust system.
#Mak esuret hat no windshield washer
concentrat espills out next tothef iller
opening.
Maintenance and care 283