Volvo XC90: Driver support / Driver Alert Control limitations
Driver Alert Control (DAC) functionality may be reduced in certain situations.
In certain situations, the system may provide a warning even if it has not detected
a change in driving behavior, e.g.:
- in strong crosswinds
- on grooved road surfaces.
WARNING
In certain cases, driving behavior might not be affected despite the driver's
fatigue – when using the Pilot Assist* function – resulting in the driver not getting
a warning from DAC.
It is therefore very important to always stop and take a break at the slightest
sign of fatigue, regardless of whether the function has issued a warning or not.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain
general limitations.
* Option/accessory.
In vehicles equipped with Sensus Navigation*, the driver can activate a guide
that can automatically suggest a suitable rest stop if the Driver Alert Control
(DAC) warning is given...
(Option/accessory.)
The Distance Alert function can help the driver become aware if the time interval
to the vehicle in front is too short. The vehicle must be equipped with a head-up
display* in order to display Distance Alert...
Other information:
The function for assisting when starting the vehicle on inclines (HSA1)
helps prevent the vehicle from rolling backward when starting on an uphill gradient.
When backing up a hill, HSA helps prevent the vehicle from rolling forward.
The function retains pressure from the brake pedal in the brake system for several
seconds after the brake pedal has been released...
Symbols and messages for the Park Assist Camera (PAC1) may be displayed
in the instrument panel and/or the center display. Several examples are provided
below.
A An authorized Volvo workshop is recommended.
A text message can be erased by briefly pressing the
button in the center of the rightside
steering wheel keypad...