Mercedes-Benz GLB 2023 Operator's Manual page 202

200 Driving and parking
If autonomous braking or situation-dependent
brake force boosting has occurred, display
appears in the instrument display and then auto-
matically goes out after a short time.
If the autonomous braking function or the situa-
tion-dependent brake force boosting is triggered,
additional preventive measures for occupant pro-
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tection (PRE-SAFE ) may also be initiated.
& 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:
Give a warning or brake without reason
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Not give a warning or not brake
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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
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situation; do not rely on Active Brake
Assist alone.
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Be prepared to brake or swerve if neces-
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sary.
If Active Brake Assist is deactivated or the func-
tions are restricted, e.g. due to activation of
another driving system, the ê display message
appears on the instrument display.
If the system is unavailable due to dirty or dam-
aged sensors or due to a malfunction, or if the
functions are restricted, the Ó warning lamp
appears in the driver's display.
Also observe the system limits of Active Brake
Assist.
The individual subfunctions are available in vari-
ous speed ranges:
The distance warning function can issue a warn-
ing in the following situations:
From approximately 4 mph (7 km/h), if your
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vehicle is critically close to a vehicle, cyclist or
pedestrian, you will hear an intermittent warn-
ing tone and the L distance warning lamp
lights up on the instrument display.
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Vehicles with PRE-SAFE : depending on the
country, an additional haptic warning occurs
in the form of slight, repeated tensioning of
the seat belt.
Brake immediately or take evasive action, provi-
ded it is safe to do so and the traffic situation
allows this.
Collision warning (vehicles without Driving Assis-
tance Package)
The collision warning can aid you in the following
situations with an intermittent warning tone and a
warning lamp:
From approximately 4 mph (7 km/h), if your
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vehicle is critically close to a vehicle, cyclist or