ATTENTION ASSIST can assist you on long, monotonous journeys, e.g. on motorways and trunk roads. If ATTENTION ASSIST detects indicators of fatigue or increased lapses in concentration on the part of the driver, it suggests taking a break.

ATTENTION ASSIST is only an aid. It cannot always detect drowsiness or increased lapses in concentration in good time. The system is not a substitute for a well-rested and attentive driver. On long journeys, take regular and timely breaks that allow you to rest properly.

If fatigue or increased lapses in concentration are detected, the ATTENTION ASSIST: Take a break! warning appears in the Instrument Display. You can acknowledge the message and take a break if necessary. If you do not take a break and ATTENTION ASSIST continues to detect increased lapses in concentration, you will be warned again after a minimum of 15 minutes.

Instrument Display (colour display)

You can have the following status information for ATTENTION ASSIST displayed in the Assistance menu of the on-board computer:

• the journey length since the last break

• the attention level determined by ATTENTION ASSIST:

  • the fuller the circle is, the higher the detected attention level is

  • the circle in the centre of the display empties from the outside inwards as attentiveness decreases

Instrument Display (black and white display)

You can have the following status information for ATTENTION ASSIST displayed in the Assistance menu of the on-board computer:

• the journey length since the last break

• the attention level determined by ATTENTION ASSIST:

  • the fuller the bar is, the higher the detected attention level is

  • the bar empties as attentiveness decreases

If ATTENTION ASSIST cannot calculate the attention level and cannot issue a warning, the Attention level message appears.

If a warning is displayed in the Instrument Display, the multimedia system offers to search for a rest area. You can select a rest area and start navigation to this rest area. This function can be activated and deactivated in the multimedia system.

If ATTENTION ASSIST is deactivated, the symbol appears in the assistance graphic in the Instrument Display when the engine is running. ATTENTION ASSIST is activated automatically when the engine is re-started. The last selected sensitivity level remains stored.

System limits

ATTENTION ASSIST is active in the 60 km/h to 200 km/h speed range.

The functionality of ATTENTION ASSIST is restricted, and warnings may be delayed or not occur at all, in the following situations:

• the journey lasts less than approximately 30 minutes

• the road condition is poor (uneven road surface or potholes)

• the vehicle is subjected to a strong crosswind

• you have a sporty driving style (high cornering speeds or high rates of acceleration)

• the time is set incorrectly

• you change lanes and vary your speed frequently in active driving situations

The ATTENTION ASSIST drowsiness or alertness assessment is deleted and restarted when continuing the journey in the following situations:

• if you switch off the engine

• you unfasten your seat belt and open the driver's door (e.g. change drivers or take a break)

Related topics

• Displaying the assistance graphic
• Activating/deactivating ATTENTION ASSIST