Mercedes-Benz A-Class 2021 Operator's Manual page 175

Active Brake Assist
Function of Active Brake Assist
Active Brake Assist consists of the following
functions:
Distance warning function
R
Autonomous braking function
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Situation-dependent braking assistance
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Vehicles with Driving Assistance Pack‐
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age: Evasive Steering Assist and cornering
function
Active Brake Assist can help you to minimize the
risk of a collision with vehicles, cyclists or
pedestrians 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 instrument
cluster.
®
Vehicles with PRE-SAFE : depending on the
country, an additional haptic warning occurs in
the form of slight, repeated tensioning of the
seat belt.
If you do not react to the warning, autonomous
braking can be initiated in critical situations.
In especially critical situations, Active Brake
Assist can initiate autonomous braking directly.
In this case, the warning lamp and warning tone
occur simultaneously with the braking applica‐
tion.
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 max‐
imum full-stop braking if necessary.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nize dangers ( page 151).
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Driving and parking 173
If autonomous braking or situation-dependent
braking assistance has occurred, display
appears in the multifunction display and then
automatically 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
protection (PRE-SAFE ® ) may also be initiated.
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