Mercedes-Benz V-Class Operating Instructions Manual page 214

Driving systems
212
If you fail to adapt your driving style, the dis-
tance warning function can neither reduce the
risk of an accident nor override the laws of phys-
ics. The distance warning function cannot take
into account road, weather or traffic conditions.
The distance warning function is only an aid. You
are responsible for the distance to the vehicle in
front, for vehicle speed, braking in good time
and for staying in your lane.
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 slow
speeds where there is no visible damage to the
front of the vehicle.
If you change wheel size, make sure they corre-
spond to the correct wheel size category
Y
( page 365). If the category is changed without
recoding the control units in the vehicle, the
functioning of the distance warning feature may
be impaired. COLLISION PREVENTION ASSIST
may then detect a fault and switch itself off.
Function
X
To activate/deactivate: activate or deacti-
vate the distance warning function in the on-
board computer (
When the distance warning function is deac-
tivated, the æ symbol appears in the assis-
tance graphic on the display.
The distance warning function can help you to
minimise the risk of a rear-end collision with a
vehicle ahead or reduce the effects of such a
collision. With the help of the radar sensor sys-
tem, the distance warning function can detect
obstacles that are in the path of your vehicle for
an extended period of time. If the distance warn-
ing function detects that there is a risk of a col-
lision, you will be warned visually and, where
necessary, acoustically. Without your interven-
tion, the distance warning function cannot pre-
vent a collision.
The distance warning function issues a warning
at speeds:
from about 30 km/h if, over several seconds,
R
the distance maintained to the vehicle travel-
ling in front is insufficient for the speed being
driven. The · warning lamp in the instru-
ment cluster then lights up.
from about 7 km/h if you approach a vehicle
R
travelling in front or a stationary vehicle too
quickly. The · warning lamp in the instru-
Y
page 257).
ment lights up and an intermittent warning
tone also sounds.
At speeds up to about 70 km/h, the system
also detects stationary obstacles, for exam-
ple stopped or parked vehicles.
X
Brake immediately until the distance from the
obstacle increases and the risk of a front-end
collision passes.
or
X
Take evasive action, provided it is safe to do
so.
Adaptive Brake Assist
General notes
Adaptive Brake Assist evaluates the traffic sit-
uation with the help of the radar sensor system
and can detect obstacles which have been in
your vehicle's path for an extended period of
time. From speeds above 7 km/h, Adaptive
Brake Assist aids you in braking during hazard-
ous situations.
Up to a speed of approximately 200 km/h,
Adaptive Brake Assist is capable of reacting to
moving obstacles that have already been detec-
ted as such at least once over the period of
observation.
Important safety notes
G
WARNING
Adaptive Brake Assist does not react:
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
to stationary obstacles
R
when cornering
R
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.