Limitations of Driver Alert Control

The Driver Alert Control (DAC) function may have limitations in certain situations.

In some cases, driving behaviour may not be affected, despite the driver being tired - e.g. when using the Pilot Assist function - with the result that the driver is then not given a warning from DAC. For this reason, it is always very important to stop and take a break in the event of the slightest sign of driver fatigue, regardless of whether DAC has given a warning.

In some cases the system may issue a warning despite driving ability not deteriorating, for example:
  • in strong side winds
  • on rutted road surfaces.


The function uses the car's camera unit, which has some general limitations, see the "Limitations for camera unit" section.