Mercedes-Benz GLA 180 Owner's Manual page 74

Situation-dependent braking assis-
tance
General information
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Observe the "Important safety notes" sec-
tion ( page 68).
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With the help of the radar sensor system, Adap-
tive Brake Assist can detect obstacles that are in
the path of your vehicle for an extended period
of time.
If Adaptive Brake Assist detects a risk of colli-
sion with the vehicle in front, it calculates the
brake pressure necessary to avoid a collision. If
you apply the brakes forcefully, the situation-
dependent braking assistance automatically
increases the brake pressure to a degree appro-
priate to the traffic situation.
Situation-dependent braking assistance pro-
vides braking assistance in hazardous situations
at speeds above 7 km/h. It uses the radar sen-
sor system to assess the traffic situation.
Situation-dependent braking assistance is capa-
ble of reacting to moving objects which have
already been recognised as such at least once
over the period of observation, up to a speed of
around 250 km/h.
Situation-dependent braking assistance can
also detect stationary objects, up to a speed of
around 70 km/h.
If situation-dependent braking assistance
demands particularly high brake pressure, pre-
ventative passenger protection measures (PRE-
®
SAFE ) are triggered simultaneously
( page 55).
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Keep the brake pedal depressed until the
X
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
you release the brake pedal
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a danger of collision with the vehicle in front
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no longer exists
no obstacle is detected in front of your vehicle
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Situation-dependent braking assistance is then
deactivated.
Important safety notes
i
Observe the "Important safety notes" sec-
tion for driving safety systems (
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Adaptive Brake Assist does not react:
to people or animals
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to oncoming vehicles
R
to crossing traffic
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when cornering
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As a result, Adaptive Brake Assist may not
intervene in all critical conditions. The risk of
an accident remains.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might:
intervene unnecessarily
R
not intervene
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The risk of an accident remains.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
Due to the nature of the system, complex but
non-critical driving conditions may also cause
Active Brake Assist to intervene.
Even if Active Brake Assist is not available due to
a malfunction in the radar sensor system, the
brake system is still available with full brake
boosting effect and BAS.
Adaptive brake lights
The adaptive brake lights warn following traffic
in an emergency braking situation by:
flashing brake lamps
R
the hazard warning lamps are activated
R
If you brake sharply from a speed of more than
50 km/h or if braking is assisted by BAS or BAS
PLUS, the brake lamps flash rapidly. In this way,
traffic travelling behind you is warned in an even
more noticeable manner.
page 68).
Y
If you brake sharply from a speed of more than
70 km/h to a standstill, the hazard warning
lamps are switched on automatically. If the
Driving safety systems
WARNING
WARNING
71
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