Collision Prevention Assist
Details & Technology
The COLLISION PREVENTION ASSIST is a radar-based collision warning system which
recognizes an inadequate distance from a vehicle ahead in the speed range between 19mph
up to vehicle top speed and stationary objects ahead of the vehicle between 19mph and
43mph with a gap up to 65 m [213 feet]. The radar unit is mounted on the right side behind
the front bumper.
When the inadequate distance respectively a danger of a collision is detected, the system
emits a visual- and additional- in step two an acoustic warning whereby the driver needs to
initiate the brake application actively. The Brake Assist PRO supports the driver during this
brake application with increased brake pressure.
• Step1: Static distance warning
The visual warning (permanent warning light in the instrument cluster) will be
activated when vehicle ahead is recognized and the gap is too low. The static distance
warning operates only compared to moving objects and as of vehicle speed of 19mph
• Step2: Dynamic drive warning
The dynamic rear-end warning will be activated when the own vehicle draws nearer to
the vehicle ahead with high speed or high acceleration. In this case, the system emits
a visual (warning light flash fast) as well as an acoustic warning (two sounds).
The COLLISION PREVENTION ASSIST is always active and can be deactivated via the
pushbutton in the upper control panel. With the deactivation of the system the warning light
in the Low-Line instrument cluster flashes the warning light stays switched on and
additionally an “OFF” is shown for 4s.
The High-Line instrument cluster shows a message about the system deactivation additional
to the warning light.
©2015 Mercedes-Benz USA, LLC / Daimler Vans USA, LLC
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