x
If Front Assist issues a warning, brake your vehi-
cle immediately depending on the traffic situa-
tion or avoid the obstacle.
x
Adapt your speed and distance from the vehi-
cles ahead to suit visibility, weather, road and
traffic conditions.
x
Front Assist cannot prevent accidents and seri-
ous injuries on its own.
x
Front Assist can issue unnecessary warnings
and carry out unwanted braking interventions in
certain complex driving situations, e.g. at traffic
islands.
x
Front Assist can issue unnecessary warnings
and carry out unwanted braking interventions
when its function is impaired, e.g. if the radar
sensor is dirty or its position has been changed.
x
Front Assist without Pedestrian Monitoring does
not react to persons. In addition, the system
does not react to animals or to vehicles that are
crossing or approaching in the same lane.
x
If you are unsure whether your vehicle possess-
es Pedestrian Monitoring, please enquire about
this at a qualified workshop before starting your
journey.
x
Be prepared to take over control of the vehicle
yourself at all times.
Warning levels and braking intervention
Please refer to
at the start of the chapter on page 165.
Front Assist can detect the following objects within
the system limits and depending on the vehicle
equipment:
— Pedestrians and vehicles also moving relative to
your vehicle.
— Crossing pedestrians.
— Stationary vehicles.
Front Assist can provide assistance and intervene if
the vehicle is approaching a detected object in such
a way that a collision with the object will occur if the
vehicle speed is maintained and there is no driver in-
tervention. The assistance may include an advance
warning, an urgent warning and automatic braking.
Under ideal conditions, this can prevent a collision or
help to reduce the consequences of the collision.
Front Assist operates in the following speed ranges:
Advance warning
Urgent warning
Automatic braking
Braking interven-
tion
Vehicle stationary
30 to 85 km/h
(20 to 53 mph)
-
5 to 55 km/h
(3 to 33 mph)
5 to 85 km/h
(3 to 53 mph)
Vehicle also moving
30 to 250 km/h
(20 to 155 mph)
30 to 250 km/h
(20 to 155 mph)
5 to 250 km/h
(3 to 155 mph)
5 to 250 km/h
(3 to 155 mph)
Pedestrian also
moving
30 to 65 km/h
(20 to 40 mph)
-
5 to 65 km/h
(3 to 40 mph)
5 to 65 km/h
(3 to 40 mph)
Crossing pedestrian
30 to 65 km/h
(20 to 40 mph)
-
5 to 65 km/h
(3 to 40 mph)
-
The values apply only under ideal conditions and are
approximate values which depend on the market
and vehicle equipment. Please contact a qualified
workshop if you have any queries about the equip-
ment installed in your vehicle.
Advance warning
The system detects a possible collision and
prepares the vehicle for possible emergency
braking.
An acoustic warning sounds and the red warning
lamp lights up. Brake or take avoiding action.
Urgent warning
If the driver does not react to the advance warning,
the system may initiate a short braking jolt in order
to draw attention to the increasing collision risk.
Brake or take avoiding action.
Automatic braking
If the driver also does not react to the urgent warn-
ing, the vehicle can be braked automatically with
braking force that increases in several stages. The
reduced speed means that it is possible to minimise
the consequences of an accident.
166
Driver assist systems
