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216 Driving and parking
Active Brake Assist
Function of Active Brake Assist
Active Brake Assist consists of the following func-
tions:
Distance warning function
R
Collision warning
R
Autonomous braking function
R
Situation-dependent braking assistance
R
Vehicles with Driving Assistance Package and
R
Active Steering Assist: Evasive Steering Assist
Active Brake Assist can help you to minimise the
risk of a collision with vehicles, cyclists or pedes-
trians or to reduce the effects of such a collision.
If Active Brake Assist has detected a risk of colli-
sion, a warning tone sounds and the L dis-
tance warning lamp lights up.
In the
Assistance
menu, an insufficient distance
1
to the vehicle in front is displayed in red. If you
further reduce the distance, the vehicle in front is
also highlighted in red. When the system detects a
risk of collision, red radar waves
front of the vehicle.
If you do not react to the warning, autonomous
braking can be initiated in critical situations.
In particularly critical situations, Active Brake
Assist can also initiate autonomous braking
directly. In this case, the warning lamp and warn-
ing tone occur simultaneously with the braking
application.
If you apply the brake yourself in a critical situa-
tion or apply the brake during autonomous brak-
ing, situation-dependent braking assistance
occurs. The brake pressure increases up to maxi-
mum full-stop braking if necessary.
2
appear in
If autonomous braking or situation-dependent
braking assistance has occurred, pop up
appears in the driver's display and then automati-
cally goes out after a short time.
If the autonomous braking function or the situa-
tion-dependent braking assistance is triggered,
additional preventive measures for occupant pro-
tection (PRE-SAFE
1
®
) may also be initiated.
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