Driving and operating
147
In the following cases, forward
collision alert may not detect a vehicle
ahead or sensor performance is
limited:
Forward collision alert 3 145.
Front pedestrian protection 3 149.
The feature uses various inputs (e.g.
camera sensor, brake pressure,
vehicle speed) to calculate the
probability of a frontal collision.
Functionality
Active emergency braking is
equipped with a front camera and
operates in forward gear in the range
between walking speed and 53 mph.
The system detects stationary
vehicles only if the speed does not
exceed 50 mph.
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driving on winding or hilly roads
driving in the dark
weather limits visibility, such as
fog, rain, or snow
9 Warning
A precondition is that forward collision
alert with front camera system is not
deactivated in the vehicle
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the sensor in the windscreen is
blocked by snow, ice, slush, mud,
dirt etc.
the windscreen is damaged or
affected by foreign objects, e.g.
stickers
This system is not intended to
replace the driver responsibility for
driving the vehicle and looking
ahead. Its function is limited to
supplemental use only to reduce
the vehicle speed before a
collision.
The system may not react to
animals. After a sudden lane
change, the system needs a
certain time to detect the next
preceding vehicle.
personalisation menu 3 96.
The system includes:
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emergency automatic braking
forward looking brake assist
forward collision alert
Active emergency braking
Active emergency braking can help to
reduce the damage and injury from
crashes with vehicles, pedestrians
and obstacles directly ahead, when a
collision can no longer be avoided
either by manual braking or by
steering. Before the active
front pedestrian protection
Emergency automatic braking
After activation of brake preparation
system and just before the imminent
collision, this function automatically
applies limited braking to reduce the
impact speed of the collision or
The driver must always be ready
to take action and apply the brakes
and steer to avoid collisions.
emergency braking applies, the driver
is warned by the forward collision
alert or the front pedestrian protection
alert.
prohibit a crash. If active emergency
braking is applied, m flashes in the
instrument cluster. Depending on the