Mercedes-Benz E 450 4MATIC 2019, Operator'S Manual

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If the time has been set incorrectly.
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In active driving situations, if you change
lanes and vary your speed frequently.
The ATTENTION ASSIST tiredness or alertness
assessment is deleted and restarted when con‐
tinuing the journey in the following situations:
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If you switch off the engine.
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If you unfasten your seat belt and open the
driver's door (e.g. changing drivers or taking
a break).
Setting ATTENTION ASSIST
Multimedia system:
4
Vehicle
5
k Assistance
5
ATTENTION ASSIST
Setting options
#
Select Standard , Sensitive or Off .
Suggesting a rest area
#
Select Suggest Rest Area .
#
Activate O or deactivate the function ª .
If ATTENTION ASSIST detects fatigue or
increasing lack of attention, it suggests a
rest area in the vicinity.
#
Select a suggested rest area: you are gui‐
ded to the selected rest area.
Traffic Sign Assist
Function of Traffic Sign Assist
Traffic Sign Assist detects traffic signs with mul‐
tifunction camera 1 . It assists you by display‐
ing detected speed limits and overtaking restric‐
tions in the instrument cluster and optionally in
the Head-up Display.
Since Traffic Sign Assist also uses the data
stored in the navigation system, it can update
the display in the following situations without
detecting traffic signs:
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When the vehicle changes roads, e.g. a free‐
way entry or exit road.
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When a village or city boundary which is
stored in the digital map is passed.
The camera also detects traffic signs with a
restriction indicated by an additional sign (e.g. in
wet conditions).
Traffic Sign Assist is only an aid. The driver is
responsible for keeping a safe distance to the
vehicle in front, for vehicle speed and for braking
in good time. The maximum permissible speed
also depends on factors such as the road sur‐
face and traffic conditions.
Warning when the maximum permissible
speed is exceeded
The system can warn you if you unintentionally
exceed the maximum permissible speed. To do
204 Driving and parking