Adaptive Brake Assist - Mercedes-Benz CLA Operator's Manual

Always pay careful attention to the traffic
situation and be ready to brake.
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
give an unnecessary warning
R
not give a warning
R
Always pay careful attention to the traffic
situation and do not rely solely on the
distance warning function.
Function
To activate/deactivate: activate or
X
deactivate the distance warning function in
the on-board computer (
If the distance warning function is not
activated, the æ symbol appears in the
assistance graphics display.
The distance warning function can help you
to minimize the risk of a front-end collision
with a vehicle ahead or reduce the effects of
such a collision. If the distance warning
function detects that there is a risk of a
collision, you will be warned visually and
acoustically. Without your intervention, the
distance warning function cannot prevent a
collision.
Starting at a speed of around 4 mph
(7 km/h) the distance warning function warns
you if you rapidly approach a vehicle in front.
An intermittent warning tone will then sound,
and the · distance warning lamp will light
up in the instrument cluster.
Brake immediately in order to increase the
X
distance from the vehicle in front.
or
Take evasive action provided it is safe to do
X
so.
For the distance warning function to assist
you when driving, the function must be
activated in the on-board computer and be
operational ( page 204).
Y
Due to the nature of the system, particularly
complicated but non-critical driving
conditions may also cause the system to
display a warning.
With the help of the radar sensor system, the
distance warning function can detect
obstacles that are in the path of your vehicle
for an extended period of time.
From a speed of around 40 mph (70 km/h),
the distance warning function can also react
to stationary obstacles, such as stopped or
parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision,
the system will initially alert you both visually
and acoustically.
In particular, the detection of obstacles can
page 204). be impaired if:
Y
R
R
R
R
R
R
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensor checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.

Adaptive Brake Assist

i
Driving safety systems
dirt on the sensors or anything else
covering the sensors
snow or heavy rain
interference by other radar sources
there are strong radar reflections, for
example in parking garages
a narrow vehicle traveling in front, e.g. a
motorbike
a vehicle traveling in front on a different line
relative to the center of your vehicle
Observe the "Important safety notes"
section for driving safety systems
( page 61).
Y
G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic
situations. In these cases, Adaptive Brake
63
Z