Warning levels and brake assist
Front Assist is active from 5km/h (3mph).
Depending on dierent conditions (vehicle
speed, speed and type of object recognised,
etc.), some of the stages described below are
omitted to optimise the performance of the
system.
Safety distance warning
If the system detects that you are
driving too close to the vehicle in
front, it will warn the driver with
this indication on the instrument cluster
display.
The timing of the warning varies depending
on driver behaviour, vehicle speed and relative
speed between both.
The safety distance warning is active from ap-
prox. 65km/h (40mph).
Advance warning
If the system detects a possible collision
with the vehicle in front, it alerts the
driver by means of an audible warning
and an indication on the instrument panel
display .
The warning moment varies depending on the
traic situation and driver behaviour. At the
same time, the vehicle will prepare for a possi-
ble emergency braking ››› in Introduction
on page211.
When Front Assist is connected, the indica-
tions of other functions on the screen may be
hidden.
Critical warning
If the driver fails to react to the advance warn-
ing, the system may actively intervene in the
brakes and generate a brief jolt to warn the
driver of the imminent danger of a collision.
Automatic braking
If the driver also fails to react to the critical
warning, the system may initiate independent
emergency braking by progressively increasing
the braking in accordance with the criticality of
the situation.
Driver emergency braking assistance system
If the driver, after the critical warning, starts
braking but the system detects that the brake
is not being applied with suicient force, the
braking intensity will be increased. This brake
assist only occurs if the pedal is pressed rmly.
WARNING
●
The system cannot prevent a collision, al-
though it can signicantly minimise the con-
sequences by reducing the speed and the
force of the impact.
●
When the Front Assist causes a braking, the
brake pedal is “harder”.
●
Automatic interventions by the Front Assist
on the brakes may be interrupted by press-
ing the accelerator or moving the steering
wheel.
●
The Front Assist may brake the vehicle until
it stops completely. However, the brake sys-
tem does not halt the vehicle permanently.
Use the foot brake!
Pedestrian and cyclist recognition
The system recognises pedestrians and cyclists
who travel in the same lane and direction and
pedestrians and cyclists who transversely cross
the vehicle's path.
Pedestrian and cyclist recognition technology
cannot exceed the physically prescribed limits
and works exclusively within the system’s limits.
The responsibility for braking always depends
on the driver.
The pedestrian and cyclist recognition can
cause undesired warnings and braking inter-
ventions, e.g. with a hidden radar sensor or a
dirty camera eld of vision.
Be ready to take charge of the vehicle at any
time.
The pedestrian and cyclist recognition operat-
ing speed range is lower than that of the Front
Assist.