2017 MERCEDES-BENZ S-Class CABRIOLET lane assist

Vehicles in the monitoring range are then not
indicated.
Active Blind Spot Assist may not detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles at the inner edge of
your lane.
Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning lamp
Active Blind Spot Assist is not operational at
speeds below approximately 20 mph (30 km/h).
Vehicles in the monitoring range are then not
indicated.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp:on the correspond-
ing side lights up red. This warning is always
emitted when a vehicle enters the blind spot
monitoring range from behind or from the side.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
7 mph (12 km/h).
If you select the reverse gear, Active Blind Spot
Assist is not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the sur-
roundings.
When Active Blind Spot Assist is activated, gray
radar waves propagating backwards appear
next to the vehicle in the assistance display in
the multifunction display. Above a speed of
20 mph (30 km/h), the color of the radar waves
in the assistance display changes to green ;.
Active Blind Spot Assist is then ready for use.
Visual and acoustic collision warning
If you switch on the turn signals to change lanes and a vehicle is detected in the side monitoring
range, you receive a visual and acoustic collision warning. You will then hear a double warning
tone and red warning lamp flashes. If the turn
signal remains on, detected vehicles are indica-
ted by the flashing of red warning lamp . There
are no further warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a lat-
eral collision in the monitoring range, a course-
correcting brake application is carried out. This
is meant to assist you in avoiding a collision.
GWARNING
A course-correcting brake application cannot always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs,
the red warning lamp flashes in the exterior mir-
ror and a dual warning tone sounds. In addition,
a display underlining the danger of a side colli-
sion appears in the multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-cor-
recting brake application may be interrupted at
any time by countersteering slightly or acceler-
ating.
Driving systems183
Driving and parking
Z

The course-correcting brake application is avail-
able in the speed range between 20 mph
(30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-cor-
recting brake application adapted to the drivingsituation occurs if:
Rthere are vehicles or obstacles, e.g. crash
barriers, located on both sides of your vehicle.
Ra vehicle approaches you too closely at the
side.
Ryou have adopted a sporty driving style with
high cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g. ESP®
or PRE-SAFE®Brake.
RESP®is switched off.
Ra loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist
XMake sure that Active Blind Spot Assist is
activated in the on-board computer
(
Ypage 200)
XSwitch on the ignition.
Warning lamps in the exterior mirrors light up
red for approximately 1.5 seconds. Gray radarwaves propagating backwards appear next to
the vehicle in the assistance display on the
multifunction display.
Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunction
camera :at the top of the windshield. Various
different areas to the front, rear and side of your
vehicle are also monitored with the aid of the
radar sensor system. Active Lane Keeping Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally. If you do not react to the warning, a
lane-correcting application of the brakes can
bring the vehicle back into the original lane.
This function is available in a speed range
between 40 mph and 120 mph (60 km/h and
200 km/h)
.
Important safety notes
Ifyou fail to adapt your driving style, Active Lane
Keeping Assist can neither reduce the risk of an accident nor override the lawsof physics. Active
Lane Keeping Assist cannot take account of
road and weather conditions. Itmay not recog-
nize traff icsituations. Active Lane Keeping
Assist isonly an aid. You are responsible for the
dist ance to the vehicle in front, for vehicle
speed, for braking ingood time and for staying in
your lane.
Active Lane Keeping Assist cannot continuously
keep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
to the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention ina non-critical driv-
ing situation.
The system may be impaired or may not function
if:
Rthere ispoor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray
Rthere isglare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera
184Driving systems
Driving and parking

Rthe radar sensors in the front or rear bumpers
or the radiator trim are dirty, e.g. obscured by
snow
Rthere are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made.
Warning vibration in the steering wheel
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 second s.
In orde r that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Lane-correcting brake application
If you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
GWARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate brake application, e.g. after intentionally driv-
ing over a solid lane marking. There is a risk of
an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.
If a lane-correcting brake application occurs,
display :appears in the multifunction display.
The brake application also slightly reduces vehi-
cle speed.
A lane-correcting brake application can be made
after driving over a lane marking recognize as
being solid or broken. Before this, a warning
must be given by means of intermittent vibration
in the steering wheel. In addition, a lane with
lane markings on both sides must be detected.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
A further lane-correcting brake application can
only occur after your vehicle has returned to the original lane.
Driving systems185
Driving and parking
Z

No lane-correcting brake application occurs if:
Ryou clearly and actively steer, brake or accel-erate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signal.
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration.
RESP®is switched off.
Rthe transmission is not in position D.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Ran obstacle in the lane in which you are driving
has been detected.
Active Lane Keeping Assist may not detect other
road users or traffic situations. An inappropriate
brake application may be interrupted at any time
if you:
Rsteer slightly in the opposite direction.
Rswitch on the turn signal.
Rclearly brake or accelerate.
A lane-correcting brake application is interrup-
ted automatically if:
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Rlane markings can no longer be recognized.
Activating/deactivating Active Lane
Keeping Assist
XPress button ;.
Indicator lamp :lights up. The Lane Keep‐
ingAssistOnmessage appears in the mul-
tifunction display. If all conditions have been
satisfied, a warning or steering intervention
may be made. If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic
(
Ypage 198) appear in green. Active Lane
Keeping Assist is ready for use.
XTo deactivate: press button;.
Indicator lamp :goes out. The Active Lane
Keeping Assist is deactivated. The Lane
Keeping Assist Offmessage appears in
the multifunction display.
Selecting Standard or Adaptive setting
XIn the DriveAssistmenu on the on-board
computer, select the Active Lane Keep‐
ing Assistfunction (Ypage 200).
XSelect settingStandardorAdaptive.
When Standardis selected, no warning vibra-
tion occurs in the following situations:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
When Adaptive
is selected, no warning vibra-
tion occurs in the following situations:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
186Driving systems
Driving and parking

Assistance graphic menu
XPress theò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eAssistanc eGraphi cmenu.
XConfirmby pressing aon thesteering
wheel.
The assistanc egraphic displays th estatus of
and information from th efollowin gdrivin g
systems or drivin gsafet ysystems :
RDistancedisplay of DISTRONI CPLU S
(Ypage 150)
RSpotligh tfunction of Night View Assis tPlus
(Ypage 202)
RDistanc ewarning and th eautonomous
braking function COLLISION PREVENTION
ASSIST PLU S (
Ypage 64)
RPRE-SAF E®Brake(Ypage 68 )
RActive Blind Spot Assis t (Ypage 181)
RATTENTION ASSIST(Ypage 176)
RActive LaneKeepin gAssis t (Ypage 184)
XPress :to display th eATTENTION ASSIST
assessment.
Service menu
Introd uction
Dependin gon th eequipmen tinstalled in th e
vehicle, you hav eth efollowin goption sin th e
Servic e
menu:
RCallingup display message sin message
memory (Ypage 204)
RChecking th etire pressur eelectronically
(Ypage 308)
RCallin gup th eservic edue dat e (Ypage 278).
RChecking th eengin eoil level usin gth eon -
boar dcomputer (Ypage 274) (Mercedes-
AM G S 65 only)
Settings menu
Introd uction
Dependin gon th eequipmen tinstalled in th e
vehicle, you hav eth efollowin goption sin th e
Settings
menu:
RChangin gassistanc esetting s (Ypage 198)
RChangin ghead-up display setting s
(Ypage 201)
RChangin gth eligh tsetting s (Ypage 202)
RChangin gth einstrumen tcluste rsetting s
(Ypage 202)
RRestoring th efactory setting s (Ypage 203)
Assistance submenu
Deactivating/activating ESP®
Observ eth e"Importan tsafet ynotes" section in
th edescription of ES P®(Ypage 66).
GWARNING
If you deactivat eES P
®,ES P®no longer sta-
bilizes th evehicle. There is an increased ris k
of skiddin gand an accident.
Only deactivat eES P
®in th esituation sdescri-
bed in th efollowing.
It may be best to deactivat eES P
®in th efollow-
ing situations:
Rwhen usin gsnow chain s
Rin deep snow
Ron sandor gravel
Fo rfurther information about ES P®,see
(Ypage 66).
XStart th eengine.
XPress th eò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eSettingsmenu.
XConfir mby pressing aon thesteering
wheel.
198Menus and submenus
On-board computer and displays

Activating/deactivating PRE-SAFE®
Brake
PRE‑S AF E®Brake is only available for vehicles
wit hth eDrivin gAssistanc ePlus package.
XPress th eò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eSettingsmenu.
XConfir mby pressin ga on thesteering
wheel.
XUse : or9 to select th eDriveAssistsubmenu.
XPress ato confirm your selection .
XPress the: or9 buttonto select PRE-SAFEBrake.
XPress ato confirm .
The curren tselection appears.
XTo act ivate/deact ivate:press th ea but-
to nagain .
When PRE-SAF E
®Brake is deactivated, th e
æ symbol appear sin th emultifunction dis-
play in th eAssistanc eGraphi c
menu.
Fo rmor einformation on PRE ‑SAFE®Brake ,see
(Ypage 68).
Activating/deactivating Active Blind Spot
Assist
XPress th eò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eSettingsmenu.
XConfir mby pressin ga on thesteering
wheel.
XUse : or9 to select th eDriveAssistsubmenu.
XPress ato confirm your selection .
XPress the: or9 buttonto select
Blind Spo tAssist.
XPress ato confirm .
The curren tselection appears.
XTo act ivate/deact ivate:press th ea but-
to nagain .
When Activ eBlin dSpo tAssist is activated,
whit eradar waves propagating backwards
appear ne xtto th evehicl ein th eAssistanc e
Graphic.
Fo rfurther information about Activ eBlin dSpo t
Assist ,see (
Ypage 181).
Setting ATTENTION ASSIST
XPress th eò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eSettingsmenu.
XConfir mby pressin ga on thesteering
wheel.
XUse : or9 to select th eDriveAssistsubmenu.
XPress ato confirm your selection .
XPress:or9 to select ATTENTIONASSIST.
XPressato confirm your selection .
XPress:or9 to select Off,Standardor Sensitive.
XPress th ea buttonto confirm th eselec-
tion.
When ATTENTI ONASSIST is deactivated, th e
é symbol appear sin th eAssistanc e
Graphicmenuin th emultifunction display.
Fo rfurther information about ATTENTI ON
ASSIST ,see (
Ypage 176).
Acti vating/deactivating Active Lane
Keeping Assist
XPress th eò buttonon th esteering whee l
to open th emen ulist .
XPress :or9 on thesteering whee lto
select th eSettingsmenu.
XConfir mby pressin ga on thesteering
wheel.
XUse : or9 to select th eDriveAssistsubmenu.
XPress ato confirm your selection .
XPress the: or9 buttonto select
Lan eKeepin gAssist.
XPress ato confirm .
The curren tselection ,Standardor Adap‐tiv e,appears.
XTo change th esetting: pressaagain.
Fo rfurther information about Activ eLan eKeep-
ing Assist ,see (
Ypage 184).
200Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
RadarSensorsDirtySee Operator' sMan ‐ual
The radar sensor system is malfunctioning .
Possibl ecauses are:
RDirt on sensor s
RHeavy rain or snow
RWhendrivin gon inter-urban roads without traffic or infrastructure,
e.g. in desert-like area s
At least on edrivin gsystem or drivin gsafet ysystem is malfunctioning
or is temporarily unavailable :
RPRE-SAFE®PLUS
RPRE-SAF E®Brake
RCOLLISION PREVENTION ASSIST PLU S
RActive LaneKeepin gAssis t
RActive Blind Spot Assis t
RDISTRONICPLU Swit hSteering Assis tand Stop&Go Pilo t
If th eradar sensor system in fron tis dirty, Active Blind Spot Assis twill
no tperfor m acourse-correcting brak eapplication .
A warning tone also sounds.
Once th ecaus eof th eproblem is no longer present, th edrivin gand
drive safet ysystems will be available again .The display message dis-
appears.
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 140).
XSwitchoff th eengine.
XClean all sensor s (Ypage 284).
XRestart theengine.
The display message disappears.
6
SRSMalfunctionSer ‐viceRequired
The restrain tsystem is malfunctioning .The 6 warning lamp also
lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th erestrain tsystem, see (
Ypage 41).
212Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
AIRMATIC is malfunctioning. Awarning tone also sounds.
XDo no tdrive at speeds abov e50 mph (80 km/h).
XMak eonly slight steering movements. Otherwise ,th efron tfender
or th etires could be damaged if th esteering movement is to olarge.
XListe nfor scraping sounds.
XPull ove rand stop th evehicl esafely, payin gattention to roa dand
traffic conditions, and set ahigher vehicl elevel.
Dependin gon th emalfunction ,it may be possibl eto rais eth evehi-
cle .
XVisit aqualified specialist workshop .
¨
Malfunction
The AIRMATIC function is restricted. The vehicle's handlin gcharac -
teristics may be affected.
XDo no tdrive at speeds abov e50 mph (80 km/h).
XVisit aqualified specialist workshop .
ActiveLaneKeepin gAssist CurrentlyUnavailable SeeOperator' sManual
Active Lan eKeepin gAssis tis deactivated and temporarily inoperative.
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty
Rvisibilit yis impaire ddue to heav yrain ,snow or fog
Rthere hav ebeen no lan emarking sfor an extended period
Rth elan emarking sare worn, dark or covered, e.g. by dir tor snow
Whe nth ecauses state dabov eno longer apply, th edisplay message
disappears.
Active Lan eKeepin gAssis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 140).
XClean th ewindshield.
ActiveLan eKeepin gAssist InoperativeActive Lan eKeepin gAssis tis malfunctioning .
XVisitaqualified specialist workshop .
Display messages221
On-board computer and displays
Z