Mercedes-Benz E-Class Series 207 Service Manual page 98

PRE-SAFE brake
The PRE-SAFE brake is a collision mitigation system
(CMS) and will be available as special equipment in
combination with DISTRONIC PLUS in the new
E-Class coupé for the first time.
As in the DISTRONIC PLUS system, the combined
data from the long and short range radar is used to
continuously calculate the potential risk of a colli-
sion.
The distance warning function can be activated and
deactivated separately via a menu in the instrument
cluster.
The proximity warning is triggered whenever a
2
deceleration >6 m/s 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.
A potential accident situation is detected
– This printout will not be recorded by the update service. Status: 01 / 2009 –
If a driving situation is recognized to be critical, the
visual and acoustic distance warnings are given
first.
If the driver fails to react adequately to the warning,
the PRE-SAFE automatically initiates a noticeable
partial braking maneuver. This relaxes the situation
slightly and at the same time the driver is again
requested to take action (brake). In parallel, the
braking effect causes PRE-SAFE measures to be
initiated.
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
Introduction of the New E-Class Coupé, Model Series 207
DISTRONIC PLUS
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P30.30-2246-00
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