Mercedes-Benz B-Class Owner's Manual page 234

If drowsiness or increasing lapses in concentra-
tion are detected, the ATTENTION ASSIST: Take
a break! warning appears in the Instrument Dis-
play. You can acknowledge the message and 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 a er 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:
The length of the journey since the last break.
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The attention level determined by ATTENTION
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ASSIST:
the fuller the circle, the higher the atten-
-
tion level determined
as your attention wanes, the circle in the
-
centre 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 o ers 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. A er the vehicle is started,
ATTENTION ASSIST is automatically activated. The
last selected sensitivity level remains stored.
System limits Syst em limits
ATTENTION ASSIST is active in the 60 km/h to
200 km/h speed range.
Driving and parking 231
Particularly in the following situations, ATTENTION
ASSIST only functions in a restricted manner and
warnings may be delayed or not occur:
If you have been driving for less than approx-
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imately 30 minutes.
If the road condition is poor (uneven road sur-
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face or potholes).
If there is a strong side wind.
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If you adopt a sporty driving style (high corner-
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ing speeds or high rates of acceleration).
If Active Steering Assist is activated and active
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( page 241).
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If the time has been set incorrectly.
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If you change lanes and vary your speed fre-
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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:
You switch o the vehicle.
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If you unfasten your seat belt and open the
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driver's door (e.g. to change drivers or take a
break).
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