
RThe engine hood mustbeclosed.
#Remo veyour foot from thea ccelerator pedal.
#Tostor ec urrent speed 2.
Yo ur vehicle adapts its speed tothat of the
ve hicle in front, but onl yuptothestored
speed.
or
#To cal lups tore ds peed 2.
#OrOn vehicles with DrivingA ssistance
Pa ckag ea nd Traf ficS ign Assis t:The dis‐
pla yeds peed limit is adop ted, if available 2.
#Todeactivat eDista nce Pilo tDISTRONIC 1.
#Toinc rease 3orreduce 4thes peed.
#Toreduce 5or increase 6thes pecified
dis tance from thev ehicle in front.
Pulling away wit hD istance Pilo tDISTRONIC
Re quirement: aspeed mus thave been pr evi‐
ousl ystore d.
#Re mo veyour foot from theb rake pedal.#Brief lypull thec ruise control le vertow ards
yo u2.
16 4
Driving and pa rking

or
#Accelerat ebrief ly.
Yo ur vehicle pulls away and adapts its speed
to that of thev ehicle in front. If no vehicle is
de tected in front, your vehicle accelerates to
th es etspeed.
Ad opting thes peed limit as thes toreds peed
Re quirements:
RSpeed Limit Pilo tisactivated in them ultime‐
dia sy stem (→pag e187).
RDis tance Pilo tDISTRONIC is acti vated.
RThe sy stem de tects atraffic sign indicating a
speed limit.
#Brief lypull thec ruise control le vertow ards
yo u3.
The displ ayed speed limit is adop tedast he
st ored speed. Your vehicle adapts its speed
to that of thev ehicle in front, but onl yupto
th es tore ds peed. If Speed Limit Pilo tisacti‐
va ted, an ydetected changes in thes peed
limit ar eadop tedbyt he system. Collision
warning
If Dis tance Pilo tDISTRONIC is unabl etosuffi‐
ciently decele rate thev ehicle in order topreve nt
it from approach ingthev ehicle in front, youw ill
be warned visually and acousticall y.An intermit‐
te nt wa rning tone will then sound and thed is‐
ta nce warning lam pwill light up in thei nstru‐
ment clus ter.
#Brak eimmediately in order toinc rease the
dis tance from thev ehicle in front.
or
#Ta ke evasiv eaction pr ovided it is saf etodo
so.
Fu nction of DRIVE PIL OT
The DRIVE PILOTfunctio nisavailable only
on vehicles with aDrivingA ssistanc ePack‐
age.
DRIVE PIL OTincludes thef ollowing driving and
driving saf etys ystems:
RSt eering Pilo twithA ctiv eLaneC hangeA ssist
(→pag e165)
RDis tance Pilo tDISTRONIC (→page 159)
RSpeed Limi tPilot (→pag e157)
Ste ering Pilot
Function of Steering Pilot
Ste ering Pilo tisonlya vailable forv ehicles
wit hthe Driving Assistance Package.
RSteering Pilo tisoperational at speeds up to
13 0m ph (2 10km/h) and helps youtos tayi n
th ec enter of thel ane bymeans of moderate
st eering inter ventions.
RIt uses as areferenc ethe vehicle in front or
th el ane markings, depending on thed rive n
speed.
RSt eering Pilo trequires youast he driver ,to
ke ep your hands onthes teering wheel at all
times so that youa reable tointer vene at any
time tocor rect thec ourse of thev ehicle and
ke ep it in lane.
RThe Steering Pilo tcan be overridden at any
tim ebys teering thev ehicle yourself.
RIfth es ystemd etects that ther ea reno lane
markings ,itusesthev ehicle ahead as aref‐
erence up toas peedo f80mph (130 km/h).
Driving and parking 16
5

Assistanc ewhen changing lane sisprovide difa ll
th ef ollowing condition sareme t:
RYoua redrivin gonah ighwayorhigh-speed
multi-lan emajor road wit hmultiple lane sin
th ed irection of tr avel.
RThe neighboring lane is free and separated
byab roke nl ane marking.
RThe driven speedisb etwe en 45 mph
(7 5k m/h) and 110m ph (180 km/h).
RThe tur nsigna lindicator is switched on for
longer than tw oseconds.
Ste ering and contact de tection
St eering Pilo trequires youast he driver ,tokeep
yo ur hands onthes teering wheel at all times so
th at youa reable tointer vene at an ytime tocor‐
re ct thec ourse of thev ehicle and keep it in lane.
The driver mus texpect achang efroma ctiveto
passiv emode or vice versaata nytime.Ifyo ua renots teering yourself or ifyo ut ake
yo ur hands offt he steering wheel forap ro‐
longed period of time, thes ystemw ill, depend‐
ing on thes ituation ,first aler tyou wit havisual
wa rning. 1appear sinthe multifunction displa y.
If yo ua restill no tsteering thev ehicle yourself or
if yo uh ave nottaken hold of thes teering wheel,
aw arning tone sounds in additio ntothewarning
messag etoremind youtot akec ontrol of the
ve hicle.
The warning messag edoes no tappear or disap‐
pear sifo ne of thef ollowing condition sareme t:
RThe driver steer sthe vehicle.
RThe driver presses asteering wheel button or
operates Touc hC ontrol.
Ac tiv eE me rgency Stop Assist
If th ed rive rc ontinues toigno rethea coustic
wa rning, Dis tance Pilo tDISTRONIC reduces the
speed. If thed rive rs tilld oes no trespond, the
ve hicle is decelerated in stages toas tandstill.
The driver can cancel thed eceleration at any
time byper form ing one of thef ollowing actions:
RSteering
RBraking or accelerating
RPressing asteering wheel button or operat‐
ing Touc hC ontrol
RActivating or deacti vating Steering Pilo tor
Dis tance Pilo tDISTRONIC
The driver must beready totake control of the
ve hicle at an ytime.
Ac tivatin gSteering Pilot
Requ irements
RESP®mustbes witched on, but no tinter ven‐
ing.
Driving and pa rking 16
7

RDistance Pilo tDISTRONIC must be activated.
#If indicator lamp 1is off: press button 2.
HOLD function
HOLD function
The HOLD function holds thev ehicle at astand‐
st ill without requ iring youtod epress theb rake pedal, suc
haswhen pulling away on steep
slopes.
Sy stem borders
The incline mus tnotbe grea tert han 30%.
Ac tivating/deactivatin gthe HOL Dfunction
&
WARNING Risk of an accident duetot he
HOLD function being acti vewhe nyou
lea vethev ehicle
If yo ul eave thev ehicle while onl ythe HOLD
function is braking thev ehicle, thev ehicle
can rollaw ay inthef ollowing situations:
RIfth er eisam alfunction in thes ystemo r
in thep owe rsupp ly.
RIf th eH OLD function is deactivated by
depressing thea ccelera torp edalort he
brak epedal, e.g. byavehicle occupant.
RIfth ee lectrics in thee ngine compart‐
ment ,the batter yorthe fuses ar etam‐
pered with.
RIf th eb atter yisd isconnected.
#Alwaysd eactivat ethe HOLD function
and secur ethe vehicle agains trolling
aw ay befor eleaving thev ehicle.
* NO
TEDama gefrom au tomatic braking
IfAc tiveB rake Assi st,D ista nce Pilot
DISTRONIC or theH OLD function is activa‐
te d, thev ehicle brakes automatically in cer‐
ta in situations.
To avo id damag etothevehicle, deactivate
th ese sy stems in thef ollowing or simila rsit‐
uations:
#During towing
#In ac arwa sh
PrerequisitesRThe vehicle is stationar y.
RThe engine is running or hasb eena utomati‐
cally switched of fbythe EC Ostart/s top
function.
RThe electric parking brak eisreleased.
RDistance Pilo tDISTRONIC is no tactivated.
16 8
Driving and pa rking

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

Displayinthe Instrument Display
1Perm issible speed
2Perm issible speed when ther eisar estriction
3Additional sign wit hrestriction
% The illustration sh owstheI nstrument Display
in theW idescreen Cockpit
Sinc eTraffic Sign Assis talso uses thed ata
st ored in then avigation sy stem, it can update
th ed ispla yint hefollowing situations without
de tecting traf fics igns:
RWhe nthe vehicle changes roads, e.g .high‐
wa ye xit or slip road.
RWhen avillag eorc ityb oundar yispassed
whic hiss tore dint he digital map.
Traf ficS ign Assist is notavailable in all coun‐
tries. If it is una vailable, display 1is shown in
th es peedome ter.
Sy stem limitations
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
RIfth er eisp oor visibility ,e.g. due toinsuf fi‐
cient illumination of ther oad, if ther ea re
highl yvariable shade conditionsorinr ain,
sno w,fogors pray .
RIfth er eisg lare, e.g. from oncoming traf fic,
dire ct sunlight or reflections from other vehi‐
cles.
RIf th ew indshield in thea reaoft he multifunc‐
tion camer aisdirty,orift he camer aisfog‐
ge du p, damaged or co vered.
RIfth et raffic signsa rehar dtod etect, e.g .due
to dir tors now, or because they arec overed
or because of insuf ficient lighting.
RIf th ei nformation in then avigation sy stem's
digital map is incor rect or out-of-da te.
RIfth es igns ar eambiguous, e.g. traf fics igns
on construction sites or in adjacent lanes.
Setting Traf ficS ign Assist
Multimedia sy stem:
,Vehicle.k Assistance.Traffic
Sign Assist
Speed Limit Pilo tfor Distanc ePilot
DISTRONIC
Speed limi tatio niss etautomatically if
DISTRONIC is activated.
#Select Speed Limit Pilot.
Driving and parking 18
7

Instrument displayoverview
&
WARNING Risk of accident duetoa n
instrumentd isplaymalfunction
If th ei nstrument displa yhasfailed or mal‐
functioned, youc anno trecognize function
re strictions applying tosaf etyr ele vant sys‐
te ms.
The operating saf etyofy ourvehicle ma ybe
impaired.
#Driv eonc arefull y.
#Have thev ehicle checkedi mmediately
at aq ualified specialis tworks hop.
Ifth eo perating saf etyofy ourvehicle is
impaired, par kthe vehicle safel yassoon as pos‐
sible. Contact aqualified specialis tworks hop. Instrument displa
y(standard)
Instrument displa yintheWidescree nCock‐
pit
1Speedomet er
2Multifunction display
3Tach ome ter
4Coolantt emperatur edisplay
5Fuel le vela nd fuel filler flap locatio nindica‐
to r
The segment sinspeedome ter1 indica tethe
sy stem status fort he following:
RCruise control (→pag e157)
RDis tance Pilo tDISTRONIC (→page 159)
19 4
Instrument Displa yand on-boar dcomputer

#Tocall up thes ubmenu or confir mthe
selection: pressthel eft-hand side of Touch
Control.
#To exitth es ubmenu: presstheb ackb ut‐
to n.
If yo ua rebrows ingasubmenua ndyoup ress
and hold theb ackb utton, them enu bar appears.
Displa ysinthem ultifunction display
:Outside temp erature
;Driv eprogram
=Transmission position (→pag e135)
?Time
ADispla ysection
Fu rther displa ysinthem ultifunction display:
Z Gearshif
trecommendatio n(
→page 138)
X j YPa
rking Pilot
¯ Cruise control (
→pag
e157)
ç Distance Pilo tDISTRONIC (
→page 165)
(→pag e159)
a St
eering Pilo t(
→page165)
ë HOLD function (
→pag
e168)
_ Ad
aptiv eHighbeam Assis t(
→page112)
Ve hicles wit haninstrument displa y(standard)
and Traf ficS ign Assist :displ ay si nstructions and
traf fics igns de tected byTraf ficS ign Assist
(
→pag e186)
Adjustin gthe in stru men tlighting
#Tu rn brightness control 1up or down.
The lightin gofthe instrument displa yand in
th ec ontrols in thev ehicle interior is adjus‐
te d.
Instrument Displa yand on-boar dcomputer 19
7