DISTRONIC PLUS
Driving assistance systems
111
Introduction of the New E-Class, Model Series 212 Sedan
b
PRE-SAFE
®
brake
The PRE-SAFE
®
brake will be available as special
equipment in combination with DISTRONIC PLUS in
the new E-Class for the first time.
As in the DISTRONIC PLUS system, the combined data
from the long and short range radar is used to contin-
uously calculate the potential risk of a collision.
The distance warning function can be activated and
deactivated separately via a menu in the instrument
cluster.
The distance warning is triggered whenever a deceler-
ation of more than 6m / s
2
is necessary in order to
avoid a collision. The warning alerts the driver to
moving or stationary obstructions in his lane in the
vehicle speed range from 30 to 250 km / h. The
distance warnings are given by the DISTRONIC
warning lamp and an intermittent tone. The
DISTRONIC warning lamp remains lit until the correct
distance has been reestablished.
If a critical driving situation is detected, the visual and
acoustic distance warnings are given first.
If the driver fails to react adequately to the warning,
the PRE-SAFE
®
brake automatically initiates a notice-
able partial braking maneuver. This relaxes the situa-
tion slightly and at the same time the driver is again
requested to take action (brake). In parallel,
PRE-SAFE
®
measures are initiated in addition to the
braking action.
Thanks to the PRE-SAFE
®
brake, the driver receives a
very clear warning that enables him to intervene in a
potentially hazardous situation by pressing the brake
pedal at an even earlier stage.
The maximum deceleration is limited to 4 m / s
2
.
P30.30-2245-00
Detection of a potential accident situation
– This printout will not be recorded by the update service. Status: 01 / 2009 –
