Mercedes-Benz A 220 4MATIC 2021, Operator'S Manual

Page: 161 / 426

You can have the following status information for
ATTENTION ASSIST displayed in the assistance
menu of the on-board computer:
R
The length of the journey since the last
break.
R
The attention level determined by ATTENTION
ASSIST:
-
The fuller the circle, the higher the atten‐
tional level determined
-
As your attention wanes, the circle in the
center of the display becomes smaller
If ATTENTION ASSIST is unable to calculate the
attention level and cannot issue a warning, the
System Suspended message appears.
If a warning is given in the Instrument Display,
the multimedia system offers to search for a rest
area. You can select a rest area and start naviga‐
tion to this rest area. This function can be activa‐
ted and deactivated in the multimedia system.
If ATTENTION ASSIST is deactivated, the
Û
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 37 mph
(60 km/h) to 124 mph (200 km/h) speed range.
Particularly in the following situations, ATTEN‐
TION ASSIST only functions in a restricted man‐
ner and warnings may be delayed or not occur:
R
If you have been driving for less than approx‐
imately 30 minutes.
R
If the road condition is poor (uneven road
surface or potholes).
R
If there is a strong side wind.
R
If you adopt a sporty driving style (high cor‐
nering speeds or high rates of acceleration).
R
If the Steering Assist function of Active Dis‐
tance Assist DISTRONIC is active.
R
If the time has been set incorrectly.
R
If you change lanes and vary your speed fre‐
quently In active driving situations.
The ATTENTION ASSIST drowsiness or alertness
assessment is reset and restarted when continu‐
ing the journey in the following situations:
R
If you switch off the engine.
R
If you unfasten your seat belt and open the
driver's door (e.g. to change drivers or take a
break).
Driving and parking 159