If Active Brake Assist has detected a risk of colli-
sion, a warning tone sounds and the
L
warning
lamp lights up in the instrument cluster.
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 are acti-
vated simultaneously with the braking application.
If you apply the brake yourself in a situation detec-
ted as critical by Active Brake Assist, or apply the
brake during autonomous braking, situation-
dependent brake force boosting occurs. The brake
pressure increases up to maximum full-stop brak-
ing if necessary.
If autonomous braking or a situation-dependent
braking boosting effect has occurred, the
L
warning lamp flashes briefly and then goes out.
Vehicles with PRE-SAFE
®
: if the autonomous brak-
ing function or the situation-dependent brake force
boosting is triggered, additional preventive meas-
ures for occupant protection (PRE-SAFE) may also
be initiated (
/
page 38).
&
WARNING Risk of an accident caused by
limited detection performance of Active
Brake Assist
Active Brake Assist cannot always clearly iden-
tify objects and complex traffic situations.
In such cases, Active Brake Assist might:
R
Give a warning or brake without reason
R
Not give a warning or not brake
Active Brake Assist is only an aid. The driver is
responsible for maintaining a sufficiently safe
distance to the vehicle in front, vehicle speed
and for braking in good time.
#
Always pay careful attention to the traffic
situation; do not rely on Active Brake
Assist alone.
#
Be prepared to brake or swerve if neces-
sary.
Observe the system limitations of Active Brake
Assist. Due to the nature of the system, complex
but non-critical driving conditions may also cause
Active Brake Assist to intervene during braking.
The individual subfunctions are available in the fol-
lowing speed ranges:
Distance warning function
The distance warning function warns you in the fol-
lowing situations:
R
From approximately 30 km/h, if over several
seconds the distance maintained to the vehicle
travelling in front is insufficient for the driven
speed, the
L
warning lamp lights up in the
instrument cluster.
R
From approximately 7 km/h, if your vehicle is
critically close to a vehicle or pedestrian, an
intermittent warning tone sounds and the
L
warning lamp lights up in the instrument clus-
ter.
Brake immediately or take evasive action, provided
it is safe to do so and the traffic situation allows
this.
The distance warning function can aid you in the
following situations with an intermittent warning
tone and a warning lamp:
R
Vehicles travelling in front: up to approximately
250 km/h
R
Stationary vehicles: up to approximately
80 km/h
R
Crossing vehicles: no reaction
R
Moving pedestrians/cyclists ahead: up to
approximately 80 km/h
R
Crossing cyclists: up to approximately
60 km/h
R
Stationary pedestrians: no reaction
Autonomous braking function
The autonomous braking function may intervene at
speeds starting from approximately 7 km/h in the
following situations:
R
Vehicles travelling in front: up to approximately
200 km/h
R
Stationary vehicles: up to approximately
50 km/h
R
Crossing vehicles: no reaction
R
Cyclists ahead: up to approximately 80 km/h
R
Moving pedestrians/crossing cyclists: up to
approximately 60 km/h
R
Stationary pedestrians: no reaction
Driving and parking 151
T447 0414 02
Summary of Contents for EQV 2021
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