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Autonomous braking function
If the vehicle is traveling at speeds above
approximately 4 mph (7 km/h), the autono‐
mous braking function may intervene in the
following situations:
Vehicles traveling in
Up to approx.
front
124 mph (200 km/h)
Stationary vehicles
Up to approx. 31 mph
(50 km/h)
Crossing vehicles
No reaction
Moving pedestrians
Up to approx. 37 mph
(60 km/h)
Stationary pedes‐
No reaction
trians
Situation-dependent brake force boosting
Situation-dependent brake force boosting
may intervene at speeds above approx‐
imately 4 mph (7 km/h) in the following sit‐
uations:
Vehicles traveling in
Up to approx.
front
155 mph (250 km/h)
Stationary vehicles
Up to approx. 50 mph
(80 km/h)
Crossing vehicles
No reaction
Moving pedestrians
Up to approx. 37 mph
(60 km/h)
Stationary pedes‐
No reaction
trians
Canceling a brake application of Active Brake
Assist
You can cancel a brake application of Active
Brake Assist at any time by:
Fully depressing the accelerator pedal or
R
with kickdown.
Driving and parking 161
Releasing the brake pedal.
R
Active Brake Assist may cancel the brake appli‐
cation when one of the following conditions is
fulfilled:
You maneuver to avoid the obstacle.
R
There is no longer a risk of collision.
R
An obstacle is no longer detected in front of
R
your vehicle.
System limits
Full system performance is not available for a
few seconds after switching on the ignition or
after driving off.
The system may be impaired or may not function
in the following situations:
In snow, rain, fog, heavy spray, if there is
R
glare, in direct sunlight or in greatly varying
ambient light.
If the sensors are dirty, fogged up, damaged
R
or covered.
If the sensors are impaired due to interfer‐
R
ence from other radar sources, e.g. strong
radar reflections in a parking garage.
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