Mercedes-Benz SL Roadster 2012 Owner's Manual page 226

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:
there are vehicles or obstacles, e.g. crash
R
barriers, on both sides of your vehicle
a vehicle approaches too closely on the
R
side
you have adopted a sporty driving style with
R
high cornering speeds
you clearly brake or accelerate
R
a driving safety system intervenes, such as
R
® ®
ESP or PRE-SAFE Brake
®
ESP is deactivated.
R
a loss of tyre pressure or a defective tyre is
R
detected
Activating Active Blind Spot Assist
Make sure that the radar sensor system
X
( page 242) and Active Blind Spot Assist
Y
( page 238) are activated in the on-board
Y
computer.
Turn the key to position 2 in the ignition
X
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
223
Z