Volvo 2008 V70 Owner's Manual page 163

NOTE
The camera has certain limitations, see
DAC is designed to help detect a slowly changing driving pattern. It is primarily intended to be used on main roads
and is not meant for use in city traffic.
WARNING
DAC is not intended to extend the duration of driving. Always plan breaks at regular intervals to help remain
alert.
In certain cases, fatigue may not affect the driver's behavior. In situations of this type, no warning will be
provided. Therefore, it is important to take breaks at regular intervals, regardless of whether or not DAC has given a
warning
Limitations
In certain situations, DAC may provide warnings even if the driver's driving pattern has not become erratic.
if the driver is testing the LDW function
in strong crosswinds
on grooved road surfaces.
174
04 Comfort and driving pleasure
Driver Alert System-option
Operating DAC
Certain settings can be made from the menu system controlled from the center instrument panel. See
more information on the menu system.
The current system status can be checked on the trip computer's display by using the buttons on the left steering wheel
lever.
Thumb wheel. Turn this wheel until
Unavailable, or [-----], i.e., the number of bars.
READ button. Confirms and erases a message in the display.
Activating DAC
In the center instrument panel, go to
page 170.
Driver Alert is displayed. The second line shows the alternative Off,
Car settings Driver Alert. Select On.
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