PRINCIPLE OF OPERATION
WARNING   WARNING:  You are responsible for controlling your vehicle at all times. The system is designed to be an aid and does not relieve you of your responsibility to drive with due care and attention. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death.
WARNING   WARNING:  The system may not function if the sensor is blocked.
WARNING   WARNING:  Take regular rest breaks if you feel tired. Do not wait for the system to warn you.
WARNING   WARNING:  Certain driving styles may result in the system warning you even if you are not feeling tired.
WARNING   WARNING:  In cold and severe weather conditions the system may not function. Rain, snow and spray can all limit sensor performance.
WARNING   WARNING:  The system will not operate if the sensor cannot track the road lane markings.
WARNING   WARNING:  If damage occurs in the immediate area surrounding the sensor, have your vehicle checked as soon as possible.
WARNING   WARNING:  The system may not correctly operate if your vehicle is fitted with a suspension kit not approved by us.

Note:   The system may not operate correctly if you modify the ride height.
Note:   Keep the windshield free from obstructions. For example, bird droppings, insects, snow or ice.
Note:   If the camera is blocked or if the windshield is damaged, the system may not function.
Note:   If enabled in the menu, the system activates at speeds above 40 mph (64 km/h). When below the activation speed, the information display informs the driver that the system is unavailable.
Rear View Mirror Camera
The system automatically monitors your driving behavior using various inputs including the front camera sensor.
If the system detects that your driving alertness is reduced below a certain threshold, the system alerts you using a chime and a message in the information display.
USING DRIVER ALERT
Switching the System On and Off
Switch the system on or off using the information display.  See   General Information. 
When active, the system monitors your alertness level based upon your driving behavior in relation to the lane markings and other factors.
System Warnings
Note:   The system does not issue warnings below approximately 40 mph (64 km/h).
The warning system has two stages. First, the system issues a temporary warning that you need to take a rest. This message only appears for a short time. If the system detects further reduction in driving alertness, it may issue another warning that remains in the information display for a longer time. You can press OK on the steering wheel control to clear the warning.
System Display
When active, the system runs automatically in the background and only issues a warning if required. You can view the status at any time using the information display.  See   General Information. 
The alertness level is shown by six steps in a colored bar.
Driver Alert Screen
The current assessment of your alertness is within a typical range.
Driver Alert Screen
The current assessment of your alertness indicates that you should rest as soon as safely possible.
The status bar travels from left to right as the calculated alertness level decreases. As the meter approaches the rest icon, the color turns from green to yellow to red.
The yellow position indicates the first warning is active and the red position indicates the second warning is active.
Note:   If you have recently received a warning, you should consider resting, even if the current assessment is within the typical range.
Note:   If the camera sensor cannot track the road lane markings, or if your vehicle speed drops below approximately 40 mph (64 km/h), the alertness level changes to grey for a short time and the information display informs you that the system is unavailable.
Resetting the System
You can reset the system by either:
  • Switching the ignition off and on.
  • Stopping the vehicle and then opening and closing the driver’s door.