Attention Assist - Mercedes-Benz 212 Sedan E-Class Service Manual

ATTENTION ASSIST

The ATTENTION ASSIST system is standard equipment
in the new model series 212 and assists the driver
during long, monotonous journeys. It is active in the
speed range between 80 and 180 km / h. When the
ATTENTION ASSIST detects excessive fatigue or
increasing inattention on the part of the driver, it
suggests taking a break as a way of improving driving
safety.
The ATTENTION ASSIST is activated in the instrument
cluster by means of the buttons on the multifunction
steering wheel.
The function sequence is determined by an analysis of
the steering wheel angle signal for certain steering
patterns which occur more frequently as fatigue or
inattention increase. In the first 20 minutes of driving,
parameters for pattern recognition and the warning
threshold for the driver are calculated individually. If
the warning threshold is exceeded by an increased
frequency of so-called "steering events", the driver is
warned accordingly. In addition, the driver's personal
driving style, the time of day and the driving time are
taken into account.
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Introduction of the New E-Class, Model Series 212 Sedan
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– This printout will not be recorded by the update service. Status: 01 / 2009 –
When the ATTENTION ASSIST detects fatigue or
increasing inattention on the part of the driver, it
issues an acoustic warning in the form of double four-
tone signal from the instrument cluster and a visual
warning in the multifunction display.
A warning can be confirmed and canceled by pressing
the "OK" button in the left multifunction steering
wheel button group. Another waning cannot be issued
for another 15 minutes.
The function of the ATTENTION ASSIST is restricted
and warnings are not issued, or issued only after a
delay, in the case of:
• Sporty driving style
• Active driving situations such as lane changes,
sharp acceleration or high cornering speeds
• Poor road conditions with surface undulations or
potholes
• Long-lasting strong crosswind
• Distraction by operating the audio equipment, the
telephone or the switches of various systems (e.g.
lights, turn signals etc.)
Representation in multifunction display (example)
1 ATTENTION ASSIST active
P54.32-7149-00