2015 MERCEDES-BENZ C-CLASS COUPE lane assist

If there is no vehicle in front, DISTRONIC PLUS
operates in the same way as cruise control.
If DISTRONIC PLUS detects that the vehicle in
front has slowed down, it brakes yourv ehicle.In
this way,t he distance you have selected is main-
tained.
If DISTRONIC PLUS detects afaster-moving
vehicle in front, it increases the driving speed.
However, the vehicle is only accelerated up to
the speed you have stored.
Selecting the drive program DISTRONIC PLUS supports asporty driving style
when you have selected the Sor S+ drive pro-
gram (Y page 161). Acceleration behind the
vehicle in front or to the set speed is then notice- ablym ore dynamic. If you have selected the Cor
E drive program, the vehicle accelerates more
gently. This setting is recommended in stop-
start traffic.
Changing lanes
If you change to the overtaking lane, DISTRONIC
PLUS supports you if:
R you are driving faster than 70 km/h
R you switch on the respective turn signal
R DISTRONIC PLUS does not detect adanger of
collision
If these conditions are met, yourv ehicle is accel-
erated. Acceleration willbei nterrupted if chang-
ing lanes takes too long or if the distance
betwee nyourv ehicle and the vehicle in front
becomes too small.
i Vehicles with COMAND Online:
when you
change lanes, DISTRONIC PLUS monitors the right lane in the case of left-side traffic or the
left lane in the case of right-side traffic.
Vehicles with Audio 20: when you change
lanes, DISTRONIC PLUS monitors the left lane
on left-hand-drive vehicle sorthe right lane on
right-hand-drive vehicles. Road and traffic conditions i
The following function is only available in
vehicle swith the Driving Assistance Plus
package.
The function is not operational in all coun-
tries.
DISTRONIC PLUS uses additional information
from yourn avigation system so that it can adapt
to certain traffic situations. This is the case if,
whilef ollowing avehicle,D ISTRONIC PLUS is
active and you:
R approach or drive around aroundabout
R approach aT-junction
R turn off at amotorway exit
R approach atollgate
Even if the vehicle in front leaves the detection
range, DISTRONIC PLUS temporaril ymaintains
the current driving speed and does not acceler- ate. This is basedont he current map data in the
navigation system.
Afterwards, the vehicle accelerates back to the
speed you set.
The system takes into account the fact that
overtaking on the right is not permitted on
motorway sorhigh-speed major roads at speeds
above 80 km/h. The driving speed is adjusted to the speed of the queueofv ehiclesinthe adja-
cent lane to the left.
i Prevention of overtaking on the right applies
to countries where traffic drives on the right.
In countries where traffic drives on the left,
overtaking on the left is prevented accord-
ingly. Driving systems
187Driving and parking Z

You will see the stored speed for approximately
five seconds when you activate DISTRONIC
PLUS.
Deactivating DISTRONIC PLUS There are several ways to deactivate
DISTRONIC PLUS:
X Briefly press the cruis econtrol lever forwards
=.
or
X Brake, unless the vehicle is stationary.
or X Briefly press the cruis econtrol lever in the
direction of arrow ;.
Variable SPEEDTRONIC is selected. LIM indi-
cator lamp :in the cruis econtrol lever lights
up.
When you deactivate DISTRONIC PLUS ,you will
see the DISTRONI CPLUS off
DISTRONI CPLUS off messageinthe
multifunction display for approximately five sec-
onds.
i The last speed stored remain
sstored until
you switc hoff the engine.
i DISTRONIC PLUS is not deactivate
difyou
depres sthe accelerator pedal.
DISTRONIC PLUS is automatically deactivated
if: R you apply the electric parking brak eorifthe
vehicle is automatically secured with the elec- tric parking brake
R ESP ®
intervenes or you deactivate ESP ®
R the transmission is in the P,Ror Nposition
R you pull the cruis econtrol lever towards you
in order to pull away and the front-passenger door or one of the rear doors is open
R the vehicle is skidding
R you activate Activ eParking Assist If DISTRONIC PLUS is deactivated, you will hear
aw arnin gtone. You will see the DISTRONIC
DISTRONIC
PLUS off PLUS off messageinthe multifunction display
for approximately five seconds.
Tip sfor driving with DISTRONIC PLUS General notes
Pay particular attention in the followin gtraffic
situations:
R Cornering, enterin gand exiting abend: the
ability of DISTRONIC PLUS to detec tvehicles
when cornering is limited. Your vehicle may
brak eunexpectedly or late.
R Driving on adifferen tline: DISTRONIC PLUS
may not detec tvehicles which are not driving
in the middle of their lane. The distance to the
vehicle in fron twill be too short.
R Other vehicles changing lane: DISTRONIC
PLUS has not detected the vehicle cuttin gin
yet. The distance to this vehicle will be too
short.
R Narro wvehicles: DISTRONIC PLUS has not
yet detected the vehicle in fron tonthe edge
of the carriageway because of its narrow
width. The distance to the vehicle in fron twill
be too short.
R Obstacles and stationar yvehicles:
DISTRONIC PLUS does not brak efor obsta-
cles or stationar yvehicles. If, for example, the
detected vehicle turn sacorner and reveals an
obstacle or stationar yvehicle, DISTRONIC
PLUS will not brak efor these.
R Crossin gvehicles: DISTRONIC PLUS may mis-
takenly detec tvehicles that are crossin gyour
lane. Activatin gDISTRONIC PLUS at traffic
light swith crossin gtraffic ,for example, could
cause your vehicle to pull away unintention-
ally.
In such situations ,brak eifn ecessary.
DISTRONIC PLUS is the ndeactivated. 190
Driving systemsDriving and parking

DISTRONI
CPLUS wit hSteering Assist
an dS top&Go Pilot General notes
DISTRONIC PLU
SwithS teerin gAssista nd
Stop&Go Pilo taids you in keepin gthe vehicle in
th ec entre of thedrivin glan ebym eans of mod-
erate steerin ginterventions inas peed range
from 0-200km/h.
It monitors th eareainf rontof your vehicle by
means of multifunction camera :,atthetopof
th ew indscreen.
In as peed range from 0-60km/h, Stop&Go
Pilo tfoc uses on th evehicle in front, taking into
accoun tlan em arkings, e.g. when followin gvehi-
cles in atraffic jam.
At speeds of more than 60 km/h, Steering
Assis tfoc uses on detecte dlanem arking s(left
and right), only focusin gonthevehicle in fron tif
detecte dlanem arking sare no tpresent.
If these condition sare no tpresent, Steering
Assis tand Stop&Go Pilo tcanno tprovid eassis-
tance.
DISTRONIC PLU Smustbea ctive in order fo rthe
function to be available.
Important safet ynotes
If you fail to adapt your drivin gstyle, DISTRONIC
PLU SwithS teerin gAssista nd Stop&Go Pilot
can neither reduce th eriskofana ccidentnor
override th elaws of physics. It canno ttak einto
accoun troa d, weather or traffic conditions.
DISTRONIC PLU SwithS teerin gAssista nd
Stop&Go Pilo tisonlyana id. You are responsible
fo rt he distanc etothevehicle in front, fo rvehi-
cl es peed, fo rbraking in goo dtimea nd fo rstay-
in ginl ane.
DISTRONIC PLU SwithS teerin gAssista nd
Stop&Go Pilo tdoesn otdetec troa da nd traffic
condition sand doe snotdetec tall road users. If
you are followin gavehicle whic hisdriving toward
sthe edg eoft hecarriageway, your vehi-
cl ec ould come into contact wit hthe kerb or
other road boundaries .Beparticularly awar eof
other road users, e.g. cyclists, that are directly
next to your vehicle.
Obstacles suc hastraffic pylon sonthelaneor
projectin gout into th elan ea re no tdetected.
An inappropriat esteerin gintervention, e.g. after
intentionally drivin goveral anem arking ,can be
correcte datany time if you steer slightly in the
opposite direction.
DISTRONIC PLU SwithS teerin gAssista nd
Stop&Go Pilo tcanno tcontinu ously keep your
vehicle in lane. In som ecases, th esteering
intervention is no tsufficien ttobring th evehicle
bac ktot helane. In suc hcases, you mus tsteer
th ev ehicle yoursel ftoensuret hatitd oesn ot
leav ethe lane.
The syste mmay be impaire dormay notfunction
if:
R there is poo rvisibility, e.g. due to insufficient
illumination of th eroad, or due to snow, rain,
fo gors pray
R there is glare, e.g. from oncomin gtraffic ,the
sun or reflection from other vehicles (e.g. if
th er oads urfac eisw et)
R thew indscree nisdirty, miste dup, damaged
or covered, fo rinstance byasticker ,inthe
vicinit yofthe camera
R no or several, unclear lan emarking sare pres-
en tfor onelane, e.g. in aconstructio narea
R thel an em arking sare wor naway, dar korcov-
ere dup, e.g. by dir torsnow
R thed istanc etothevehicle in fron tistoosmall
and th elan em arking sthusc anno tbed etec-
ted
R thel an em arking schang eq uickly, e.g. lanes
branc hoff,c ross on eanother or merge
R ther oadisn arrowand winding
R there are highly variable shade condition son
th er oad
The syste misswitched to passive and no longer
assist syou by performin gsteerin ginterventions
if:
R you actively chang elane
R you switch on th eturns ignal
R you take your hands of fthe steerin gwhee lor
do no tsteer fo raprolonged period of time
i Afte
ryou hav efinished changin glanes,
Steerin gAssista nd Stop&Go Pilo tare auto-
matically active again. Driving syste
ms
191Driving an dparking Z

B
Vehicle centre axis (locating aid)
C Yellow guidel ine atadistance of approx-
imately 1.0 mfrom the rear of the vehicle
D Bumper
E Red guidel ine atadistance of approximately
0.30 mfrom the rear of the vehicle
The guidel ines are shown when the transmis-
sion is in position R.
The distance specifications only applyto
objects that are at ground level.
Top view with image from the front cam-
era :
Symbol for the split-screen setting with top
view and front camera image
; Yellow guidel ine atadistance of approx-
imately 4.0 mfrom the front of the vehicle
= Yellow guidel ine for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
? Yellow lane marking the course the tyres will
take at the current steering wheel angle
(dynamic)
A Red guidel ine atadistance of approximately
0.30 mfrom the front of the vehicle
B Yellow guide line at adistance of approx-
imately 1.0 mfrom the front of the vehicle Top vie
wand enlarged rear view :
Symbo lfor the split-screen setting with top
view and reversing camera image enlarged
; Red guide line at adistance of approximately
0.30 mfrom the rear of the vehicle
This view assists you in estimating the distance to the vehicl ebehind you.
i This setting can als
obeselected as an
enlarged front view.
Top vie wwithi mage from the side cam-
eras :
Symbo lfor the top view and forward-facing
side camera setting
; Yellow guide line for the vehicl ewidth
including the exterior mirror (right side of
vehicle)
= Yellow guide line for the vehicl ewidth
including the exterior mirror (left side of
vehicle)
i You can als
oselect the side camera setting
for the rear-facing view. Driving systems
213Driving and parking Z

ATTENTION ASSIST
Genera lnotes ATTENTION ASSIST help
syou during long,
monotonous journeys suc hasonmotorways
and trunk roads. It is active in th e60km/ hto
20 0k m/ hspee drange. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapse sinconcentratio nonthepart of the
driver ,itsuggest staking abreak.
Important safety notes ATTENTION ASSIST is only an aid. It may not
always detec tfatigue or lapse sinconcentration
until to olate, or may no tdetec tthe mata ll. The
system is no tasubstitut efor aw ell-reste dand
attentive driver.
The functionalit yofATTENTION ASSIST is
restricted, and warning smay be delaye dornot
occur at all:
R if th elengt hoft hejourney is less than approx-
imately 30 minutes
R if th eroad condition is poor ,e.g.ift hesurface
is uneven or if there are potholes
R if there is astron gs ide wind
R if you hav eadopted asport ydrivin gstyle with
high cornering speeds or high rates of accel-
eration
R if you are predominantly drivin gataspeed
belo w60k m/horabov e200 km/h
R if you are drivin gwitht he active Steer Assist
of DISTRONI CPLUS
R if th etimeh as been set incorrectly
R in active drivin gsituations, suc haswhen you
chang elanes or chang eyour speed
The ATTENTION ASSIST tiredness assessment
is delete dand restarte dwhen continuing the
journey, if:
R you switch off th eengine
R you tak eoff your seat belt and open th edriv-
er' sd oor ,e.g.f or ac hang eofd riversorto
tak eab reak Displaying th
eattention level You can hav
ecurren tstatus information dis-
played in th eassistanc emenu( Ypage 244) of
th eo n-bo ard computer.
X Selec tthe assistanc egraphic sdisplay for
ATTENTION ASSIST usin gthe on-board com-
puter (Y page 243).
The followin ginformation is displayed:
R thel engt hoft hejourney since th elast break
R thea ttention level determine dbyATTENTION
ASSIST (Attention level Attention level), displayed in a
bar display in fiv elevels from high to low
R if ATTENTION ASSIST is unable to calculate
thea ttention level and canno tissue awarn-
ing ,the System suspended System suspended message
appears. The bar display then changes the
display, e.g. if you are drivin gataspeedbelow
60 km/h or abov e200 km/h.
Activating ATTENTION ASSIST X
Activat eATTEN TION ASSIST usin gthe on-
boar dcom puter (Y page 246).
The system determine sthe attention level of
th ed river depending on th esetting selected:
If Standard Standard is selected: th esensitivit ywith
whic hthe system determine sthe attention level
is set to normal.
If Sensitive
Sensitive is selected: th esensitivit yisset
higher. The attention level detecte dbyATTEN-
TIO NA SSIS Tisa dapted accordingly and the
driver is warned earlier.
When ATTENTION ASSIST is deactivated, the
é symbol appear sinthemultifunction dis-
play in th eassistanc egraphic display.
When ATTENTION ASSIST has been deactivated, it is automatically reactivated after th eengine
has been switched off .The sensitivit yselected Driving systems
215Driving and parking Z

Important safety notes
Traffic Sig
nAssist is only an aid and is no talways
able to correctl ydisplay spee dlimits and over-
taking restrictions. Traffic sign salways have pri-
ority ove rthe Traffic Sig nAssist display.
The system may be either functionally impaired
or temporarily unavailable if:
R visibilit yispoor,e.g.d ue to snow, rain ,fog or
spray
R there is glare, e.g. from th esun bein glow in
th es ky
R there is dirt ,ice or misting on th ewindscreen
in th evicinity of th ecamera
R traffic sign sare hard to detec t(dirt, ice ,sno w)
R thet raffic sign sare insufficientl ylit at night
R sign sare ambiguous (e.g. traffic sign soncon-
struction sites or in adjacent lanes)
R thei nformation in th edigital stree tmap of the
navigation system is incorrec torout of date
Activating Traffic Sign Assist X
Activat ethe Traffic Sig nAssist display using
th eo n-bo ard computer (Y page 245).
If you hav eactivated th eTraffic Sig nAssist dis-
play in th eon-bo ard computer, th etraffic regu-
lation s(speed limits and overtaking restrictions)
are displayed in th einstrumen tcluste rfor five
seconds respectively. The wrong-way warning
and th etraffic sign display for spee dlimits and
overtaking restriction sremain active in the
Assist graphic eve nwhen th edisplay has been
deactivated. Instrumen
tcluster display Speed limit with unknown restriction
:
Maximum permitte dspeed
; Maximum permitte dspee dfor vehicles for
whic hthe restriction in th eadditional sign is
relevant
= Additional sign for unknown restriction
Am aximum permitte dspee dof80k m/h
(80 mph )and aspee dlimi tof60k m/h(60 mph)
wit hanu nknown restriction apply.
No entry (wrong-way warning) If no entr
ysign sare passed, awarning message
is displayed in th einstrumen tcluste rshould
Traffic Sig nAssist detec ttha ty ou are driving in
th ew rong direction .You will then also hear a
warning tone .You should immediately check
your direction of travel in order to avoi ddanger
to yourself and other road users. Lane Tracking package
General notes The Lan
eTrackin gpackag econsists of Blind
Spot Assist (Y page 218) and Lan eKeeping
Assist (Y page 219). Driving systems
217Driving and parking Z

Blind Spo
tAssist General notes
Blind Spo tAssist monitors the areas on either
side of the vehicl ethata re not visible to the
driver with two lateral, rear-facing radar sen-
sors. Awarning display in the exterio rmirrors
draws your attentio ntovehicles detecte dinthe
monitore darea. If yo uthen switch on the cor-
responding turn signa ltochange lanes, yo uwill
also receive avisua land audibl ecollision warn-
ing.
Blind Spo tAssist supports yo ufrom aspeed of
approximatel y30km/h.
Important safety notes G
WARNING
Blind Spo tAssist does not react to vehicles:
R overtake ntoo closel yonthe side ,placing
them in the blind spo tarea
R when the difference in the speed of
approach and overtaking is too great
As aresult, Blind Spo tAssist canno twarn
driver sinthesesituations. There is ariskofan
accident.
Alway spaycarefu lattentio ntothe traffic sit-
uatio nand maintain asafed istance at the side
of the vehicle.
Blind Spo tAssist is onl yanaid.Itm ayfailto
detect som evehicles and is no substitute for
attentive driving .Alway sensure tha tther eis
sufficient distance to the side for othe rroad
users and obstacles.
Radar sensors
The radar sensors for Blind Spo tAssist are inte-
grated into the rea rbum per. Make sure tha tthe
bumpers are free from dirt, ice or slush. The
sensors must not be covered ,for exampl eby
cycl eracks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the functio nofthe radar sensors
checked at aquali fied specialist workshop.
Blind Spo tAssist ma ynolonger work properly. Monitorin
grange
In particular, the detection of obstacle scan be
impaired in the cas eof:
R dirt on the sensors or obscured sensors
R poor visibility ,e.g.d ue to fog ,heavy rain,
snow or spray
R narrow vehicles, e.g .motorcycle sorbicycles
R ver yw idel an es
R narrow lanes
R vehicles not driving in the middl eoftheirlane
R barriers or othe rroa db oundaries
Vehicles in the monitoring rang eare then not
indicated. Blind Spo
tAssist monitors the are aupto3.0 m
behind your vehicl eand directl ynext to your
vehicle, as shown in the diagram.
If the lanes are narrow ,vehicles driving in the
lane beyond the lane next to your vehicl emaybe
indicated ,especially if the vehicles are not driv-
ing in the middl eoftheirlan e. Thi smaybe the
cas eift hereare vehicles at the edge of thei rlane
neares tyou rv ehicle.
Due to the nature of the system:
R warning smaybe issued in error when driving
close to crash barriers or similar solid lane
borders
R warning smaybe interrupte dwhend riving
alongsid elon gv ehicles, for exampl elorries,
for aprolonged time 218
Driving systemsDriving an
dparking

Warning display
:
Warning display
Blind Spot Assist is not active at speeds below
approximately 30 km/h. Vehicles in the moni-
toring range are then not indicated.
If av ehicl eisd etected withi nthe monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the correspond-
ing side lights up red. This warning lamp always lights up when avehicl eenters the blind spot
monitoring range from behind or from the side.
When you overtake avehicle, the warning only
occurs if the difference in spee disless than
12 km/h.
If you select the reverse gear, Blind Spot Assist
is not operational.
The brightness of the warning lamp sisauto-
matically adapted to the brightness of the sur-
roundings.
Collisionw arning
If av ehicl eisd etected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, adouble warning tone
sounds. Red warning lamp :flashes. If the turn
signa lremains on, detected vehicles are indica-
ted by the flashing of red warning lamp :.
There are no further warning tones.
Activating Blind Spot Assist X Make sure that Blind Spot Assist is activated
in the on-board computer (Y page245).
X Turn the key to position 2in the ignition lock.
Warning lamps :in the exterior mirrors light
up red until the engine is started. Display in the assistance graphic
When Blind Spot Assist is activated, grey radar
waves propagating backwards appear next to
the vehicl einthe assistance display in the mul-
tifunction display .Above aspee dof30k m/h,
the colou rofthe rada rwaves in the assistance
display changes to green :.Blind Spot Assist is
then read yfor use.
Towing atrailer
If you coupl eupatrailer, make sure that you
have correctly established the electrical con-
nection. This can be accomplishe dbychecking
the trailer lighting. Blind Spot Assist is then
deactivated. The Blind Spot Assist not Blind Spot Assist not
available when towing atrailer See
available when towing atrailer See
Owner's Manual
Owner's Manual message appears in the mul-
tifunction display.
Lane Keepin gAssist General notes
Lane Keeping Assist monitors the area in front of
you rvehicl ebym eans of multifunction cam-
era :attached at the top of the windscreen.
Lane Keeping Assist detects lane markings on
the road and can warn you before you leave your lane unintentionally. Driving systems
219Driving and parking Z