2012 MERCEDES-BENZ SL ROADSTER brake

R
Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the location. In some cases, Active Parking
Assist may guide you too far into a parking
space, or not far enough into it. In some
cases, it may also lead you across or onto
the kerb. If necessary, you should cancel
the parking procedure with Active Parking
Assist.
R You can also engage forward gear prema-
turely. The vehicle redirects and does not
drive as far into the parking space. Should a
gear be changed too early, the parking pro- cedure will be cancelled. A sensible parkingposition can no longer be achieved from
this position.
Exiting a parking space Active Parking Assist can only assist you with
exiting a parking space if you have parked thevehicle using Active Parking Assist.
X Start the engine.
X Switch on the turn signal on the side facing
the street.
X Shift the transmission to position Dor R.
The Start Park Assist? Yes: OK No: Start Park Assist? Yes: OK No:
% message appears in the multifunction
display.
X To cancel the procedure: press the%
button on the multifunction steering wheel
or pull away.
or X To exit a parking space using Active
Parking Assist: press theabutton on
the multifunction steering wheel.
The Park Assist active Accelerate
Park Assist active Accelerate
and
and brake brake Observe
Observe surroundings
surroundings mes-
sage appears in the multifunction display. X
Release the multifunction steering wheel.
X Reverse the vehicle or drive forwards, being
ready to brake at all times. Do not exceed a maximum speed of approximately 10 km/h
when exiting a parking space. Otherwise,
Active Parking Assist will be cancelled.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
X Shift the transmission to position Dor Ras
required while the vehicle is stationary.
Active Parking Assist immediately steers in the other direction.
i You will achieve the best results by wait-
ing for the steering procedure to complete before pulling away.
If you reverse after activation, the steering
wheel is moved to the straight-ahead posi- tion.
X Drive forwards or reverse the vehicle, being
ready to brake at all times.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
X Drive forwards and reverse as prompted by
the PARKTRONIC warning displays, several
times if necessary.
Once you have exited the parking space com- pletely, the steering wheel is moved to the
straight-ahead position. You hear a tone and
the Park Assist switched off
Park Assist switched off message
appears in the multifunction display. You will
then have to steer and merge into traffic on
your own. PARKTRONIC is still available.
Cancelling Active Parking Assist You can cancel Active Parking Assist at any
time.210
Driving systemsDriving and parking

Problems with Night View Assist Plus
Problem
Possible causes/consequences and
M
MSolutions The picture quality of
Night View Assist Plus
has deteriorated. The windscreen is misted up on the inside.
X Fold down camera cover (Y page 572).
X Demist the windscreen (Y page 147). The windscreen is iced up.
X De-ice the windscreen (Y page 146). The windscreen wipers are smearing the windscreen.
X Replace the wiper blades (Y page 136). The windscreen is smeared after the vehicle has been cleaned in a
car wash.
X Clean the windscreen (Y page 570). The windscreen has been damaged by stone impact in the cam-
era's field of vision.
X Replace the windscreen. The pedestrian and ani-
mal recognition is not
available. The infrared camera in the radiator grille is dirty.
X Use a soft cloth and water to clean the infrared camera. Active Driving Assistance package
General notes The Active Driving Assistance package con-
sists of DISTRONIC PLUS (Y page 185), Active
Blind Spot Assist (Y page 220) and Active
Lane Keeping Assist (Y page 223).
Active Blind Spot Assist General notes
Active Blind Spot Assist uses a radar sensor
system to monitor the area to the sides of
your vehicle which are behind the driver. A
warning display in the exterior mirrors draws
your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lanes, you
will also receive an optical and audible colli-
sion warning. If a risk of side impact is detec- ted, corrective braking may help you avoid a
collision. To support the course-correcting
brake application, Active Blind Spot Assist
also uses the forward-facing radar sensor sys-
tem.
Active Blind Spot Assist supports you from a
speed of approximately 30 km/h.
For Active Blind Spot Assist to assist you
when driving, the radar sensor system must
be operational.
Important safety notes
Active Blind Spot Assist is only an aid. It may fail to detect some vehicles and is no substi-
tute for attentive driving. 220
Driving systemsDriving and parking

Indicator and warning display
:
Yellow indicator lamp/red warning lamp
Active Blind Spot Assist is not active at
speeds below approximately 30 km/h. Vehi-
cles in the monitoring range are then not indi-
cated.
If Active Blind Spot Assist is activated, indi-
cator lamp :in the exterior mirrors lights up
yellow up to a speed of 30 km/h. At speeds
above 30 km/h, the indicator lamp goes out
and Active Blind Spot Assist is operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
sponding side lights up red. A warning is
always issued 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 12 km/h.
The yellow indicator lamp goes out if reverse gear is engaged. Active Blind Spot Assist is
then no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. Visual and acoustic collision warning When 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 then hear a double warning tone and red warning
lamp :flashes. If the turn signal remains on,
detected vehicles are indicated by the flash-
ing of red warning lamp :. There are no fur-
ther warning tones.
Course-correcting brake application G
WARNING
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. 222
Driving systemsDriving and pa
rking

If a course-correcting brake application
occurs, red warning lamp :flashes in the
exterior mirror and a dual warning tone
sounds. In addition, display ;appears in the
multifunction display.
If Active Blind Spot Assist detects a risk of a
side impact in the monitoring range, a course- correcting brake application is carried out.
This is designed to help you avoid a collision.
The course-correcting brake application is
available in the speed range between
30 km/h and 200 km/h.
Either a very slight course-correcting brake
application, or none at all, may occur if:
R there are vehicles or obstacles, e.g. crash
barriers, on both sides of your vehicle
R a vehicle approaches too closely on the
side
R you have adopted a sporty driving style with
high cornering speeds
R you clearly brake or accelerate
R a driving safety system intervenes, such as
ESP ®
or PRE-SAFE ®
Brake R
ESP ®
is deactivated.
R a loss of tyre pressure or a defective tyre is
detected
Activating Active Blind Spot Assist X
Make sure that the radar sensor system
(Y page 242) and Active Blind Spot Assist
(Y page 238) are activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of camera :
at the top of the windscreen. Active Lane
Keeping Assist detects lane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the warning, a lane-correcting application of the Driving systems
223Driving and parking Z

brakes can bring the vehicle back into the
original lane.
If you select km kmin the Display unit
Display unit
Speed-/odometer
Speed-/odometer function on the on-board
computer (Y page 239), Active Lane Keeping
Assist is activated starting at a speed of
60 km/h. If the miles
miles display unit is selected,
the assistance range begins at 40 mph.
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of an accident nor override the laws of
physics. Lane Keeping Assist cannot take into account road, weather or traffic conditions.
Lane Keeping Assist is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time, and for staying in lane.
Active Lane Keeping Assist cannot continu-
ously keep your vehicle in its lane. G
WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
R give an unnecessary warning and then
make a course-correcting brake application
to the vehicle
R neither give a warning nor 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 in a non-critical driv-
ing situation.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
R there is glare, e.g. from oncoming traffic,
the sun or reflection from other vehicles
(e.g. if the road surface is wet) R
the windscreen is dirty, misted up, dam-
aged or covered, for instance by a sticker,
in the vicinity of the camera
R no, or several, unclear lane markings are
present for one lane, e.g. in a construction
area
R the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R the road is narrow and winding
R there are highly variable shade conditions
on the road
Warning vibration through 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 steer-
ing wheel for up to 1.5 seconds.
In order that you are warned only when nec-
essary and in good time if you cross the lanemarking, the system recognises certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend
R the road has very wide lanes, e.g. a motor-
way
R the system recognises solid lane markings
The warning vibration occurs later if:
R the road has narrow lanes
R you cut the corner on a bend
Lane-correcting brake application G
WARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident. 224
Driving systemsDriving and parking

Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation. G
WARNING
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 to the side for
other traffic or obstacles.
In rare cases, Active Lane Keeping Assist can
recognise unclear markings or particular
structures on the roadway as solid lane mark-
ings. An inappropriate brake application may
be interrupted at any time if you steer slightly in the opposite direction. If a lane-correcting brake application occurs,
display :appears in the multifunction dis-
play.
If you leave your lane under certain circum-
stances, the vehicle will brake briefly on one
side. This is intended to help you return the
vehicle to the original lane.
This function is available in the range between
60 km/h and 200 km/h.
A lane-correcting brake application can only
be made after driving over a solid, recognis- able lane marking. Before this, a warning
must have been issued by means of intermit-
tent vibration through the steering wheel. In
addition, a lane with lane markings on both
sides must be recognised. The brake applica- tion also slightly reduces driving speed.
i A further lane-correcting brake applica-
tion can only occur after your vehicle has
returned to the original lane.
No lane-correcting brake application occurs
if:
R you clearly and actively steer, brake or
accelerate
R you cut the corner on a sharp bend
R you have switched on the turn signals
R a driving safety system intervenes, such as
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist
R you have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration
R ESP ®
is deactivated
R the transmission is not in position D
R a loss of tyre pressure or a defective tyre
has been detected and displayed
Active Lane Keeping Assist does not detect
road and traffic conditions. An inappropriate
brake application may be interrupted at any
time if:
R you steer slightly in the opposite direction
R you switch on the turn signal
R you clearly brake or accelerate
A lane-correcting brake application is inter-
rupted automatically if:
R a driving safety system intervenes, such as
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist
R lane markings are no longer be detected Driving systems
225Driving and parking Z

Activating Active Lane Keeping Assist
X Activate Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
Standard orAdaptive Adaptive (Ypage 238).
If you drive at speeds above 60 km/h and
lane markings are detected, the lines in the
assistance graphics display (Y page 237)
are shown in green. Lane Keeping Assist is
ready for use.
If Standard
Standard is selected, no warning vibra-
tion occurs if:
R you have switched on the turn signals. In
this case, the warnings are suppressed
for a certain period of time.
R a driving safety system intervenes, such
as ABS, BAS or ESP ®
.
When Adaptive
Adaptive is selected, no warning
vibration occurs if:
R you have switched on the turn signals In
this case, the warnings are suppressed
for a certain period of time
R a driving safety system intervenes, such
as ABS, BAS or ESP ®
R you accelerate hard, e.g. kickdown
R you brake hard
R you steer actively, e.g. swerve to avoid an
obstacle or change lane quickly
R you cut the corner on a sharp bend 226
Driving systemsDriving and pa
rking

Assistance menu
Introduction In the
Assist.
Assist. menu, you have the following
options:
R Showing the assistance graphic
(Y page 237)
R AMG vehicles only: setting the vehicle level
(Y page 202)
R Activating/deactivating the Speed Limit
Assist message function (Y page 237)
R Activating/deactivating PRE-SAFE ®
Brake
(Y page 238)
R Activating/deactivating ATTENTION
ASSIST (Y page 238)
R Activating/deactivating Active Blind Spot
Assist (Y page 238)
R Activating/deactivating Active Lane Keep-
ing Assist (Y page 238)
Showing the assistance graphic X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press 9or: to select Assistance
Assistance
graphic
graphic.
X Press the abutton.
The multifunction display shows the DIS-
TRONIC PLUS distance display in the assis- tance graphic (Y page 191).
The assistance graphic can display the status of and information from other driving systems
or driving safety systems. The assistance graphic shows:
R the é symbol when ATTENTION ASSIST
(Y page 214) is deactivated.
R the lane markings as bright lines when
Active Lane Keeping Assist (Y page 223) is
activated.
R the Ä symbol when Speed Limit Assist
(Y page 215) is operational.
The assistance graphic can also display
traffic signs that are detected and indicate speed limits.
R the æ symbol when PRE-SAFE ®
Brake
(Y page 77) is deactivated.
R the pedestrian symbol of the spotlight func-
tion when the spotlight function of Night
View Assist Plus (Y page 240) is activated.
Speed Limit Assist Activating/deactivating the Speed Limit
Assist message function
X Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Speed Limit Assist
Speed Limit Assist .
X Press the abutton.
The multifunction display shows Speed
Limit Assist.
X Press the :button.
The current selection is displayed.
X To activate or deactivate: pressa.
When the Speed Limit Assist message
function is activated, the assistance
graphic shows the Äsymbol in the mul-
tifunction display.
If the Speed Limit Assist message function
is activated, a detected speed limit is auto-
matically displayed for five seconds. Other items in the multifunction display are not
shown during this time. Menus and sub
menus
237On-board computer and displays Z