Mercedes-Benz GLB 2021 Series, Operator'S Manual

Page: 216 / 446

take a break where necessary. If you do not take
a break and ATTENTION ASSIST continues to
detect increasing lapses in concentration, you
will be warned again after a minimum of
15 minutes.
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.
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or not
occur at all in the following situations:
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 tiredness or alertness
assessment is deleted and restarted when con‐
tinuing 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. changing drivers or taking
a break).
214 Driving and parking