Volvo S80 Owner's Manual page 166

Brake support
If the risk of collision still increases after the
collision warning then the brake support is acti-
vated. The brake support prepares the brake
system for rapid braking and the brakes are
applied gently, which may be noticed as a
slight jerk.
If the brake pedal is depressed sufficiently
quickly then full brake function is implemented,
even with light pedal force.
Auto Brake
If the driver has not yet started an evasive
manoeuvre in this situation and the risk of a
collision is imminent then the Auto Brake func-
tion comes into effect, without the driver need-
ing to touch the brake pedal. Braking then
takes place with limited brake force in order to
reduce collision speed. The driver has to brake
in order to achieve full brake force.
Operation
Settings are made from the centre console dis-
play via a menu system. For information on
how the menu system is used, see page 116.
NOTE
The Auto Brake function is always switched
on and cannot be switched off.
On and Off
To select whether the collision warning system
should be switched on or off: Under the
settings Collision warning settings
On
select between the options for
setting selected when the engine was switched
off is automatically obtained when the engine
is started.
Activating/deactivating warning signals
The warning sound and warning lamp are acti-
vated automatically when the engine is started
if the system is switched on.
The warning sound can be activated/deacti-
vated separately using the options for
Off under Car settings Collision warning
settings Warning sound.
Set warning distance
The warning distance regulates the distance at
which the visual and acoustic warnings are
deployed. Select one of the options from
Long , Normal or Short under Car settings
Collision warning settings
distance.
The warning distance determines the system's
sensitivity. Warning distance Long
Long
earlier warning. First test with
setting produces too many warnings, which
could be perceived as irritating in certain sit-
04 Comfort and driving pleasure
Collision Warning with Auto Brake*
uations, then change to warning distance
Normal .
Car
Only use warning distance
menu,
tional cases, e.g. for dynamic driving.
Off.
or The
NOTE
When the adaptive cruise control is in use
the warning lamp and warning sound will be
used by the cruise control even if the colli-
sion warning system is switched off.
The collision warning system warns the
driver in the event of a risk of a collision, but
the function cannot shorten driver reaction
time.
On
or
In order for the collision warning system to
be effective, always drive with the Distance
Alert set at time interval 4 – 5. see
page 161.
NOTE
Even if the warning distance has been set to
Long then in certain situations warnings
could be perceived as being late. E.g. in the
Warning
event of large differences in speed or if vehi-
cles in front brake heavily.
provides an
Checking settings
and if this
The settings required can be controlled on the
centre console display. Access via the menu
*
Option/accessory, for more information, see Introduction.
Short in excep-
04
165