Mersedes SUV Manuals

Attention assist

Mercedes-Benz GL-Class / Mercedes-Benz GL-Class Owners Manual / Driving and parking / Driving systems / Attention assist

Important safety notes

Attention assist is only an aid to the driver. It might not always recognize fatigue or increasing inattentiveness in time or fail to recognize them at all. The system is not a substitute for a well-rested and attentive driver.

Attention assist helps you during long, monotonous journeys, such as on highways.

It is active in the range between 50 mph (80 km/h) and 112 mph (180 km/h).

If attention assist detects typical indicators of fatigue or increasing lapses in concentration on the part of the driver, it suggests you take a break.

Attention assist assesses your level of fatigue or lapses in concentration by taking the following criteria into account: your personal driving style, e.G. Steering characteristics
journey details, e.G. Time of day and length of journey
the functionality of attention assist is restricted and warnings may be delayed or not occur at all:
if the road condition is poor, e.G. If the surface is uneven or if there are potholes if there is a strong side wind if you have adopted a sporty driving style with high cornering speeds or high rates of acceleration
if you are predominantly driving slower than 50 mph (80 km/h) or faster than 112 mph (180 km/h)
if you are currently using comand or making a telephone call with it if the time has been set incorrectly in active driving situations, such as when you change lanes or change your speed

Warning and display messages in the multifunction display

■ activate attention assist using


activate attention assist using the onboard computer  .

Symbol 1 appears in the multifunction display.

the attention assist: take a break! Message appears in the multifunction display. If necessary, take a break.

press the button to confirm or
the message. button to confirm
the message.

If attention assist is active, you will be warned no sooner than 20 minutes after your journey has begun. In addition to the message shown in the multifunction display, you will then hear an intermittent warning tone twice.

On long journeys, take regular breaks in good time to allow yourself to rest properly. If you do not take a break and attention assist still detects increasing lapses in concentration, you will be warned again after 15 minutes at the earliest.

ATTENTION ASSIST is reset when you continue your journey and starts assessing your tiredness again if:

you switch off the engine.

you take off your seat belt and open the driver's door, e.g. for a change of drivers or to take a break.

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