Mercedes-Benz 2009 GL-Class Automobile User Manual


 
Driving systems
172
Distronic
Safety notes
When activated, the Distronic adaptive cruise
control increases the driving convenience
afforded by the cruise control while traveling
on expressways and other major roadways.
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If the Distronic distance sensor detects a
slower moving vehicle directly ahead, your
vehicle speed will be reduced so that you
follow that vehicle at your preset following
distance.
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If there is no vehicle directly ahead of you,
the Distronic will function in the same way
as standard cruise control (Y page 169).
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Warning!
The Distronic is a convenience system. Its
speed adjustment reduction capability is
intended to make cruise control more
effective and usable when traffic speeds
vary. It is not however, intended to, nor
does it, replace the need for extreme care.
The responsibility for the vehicle’s speed,
distance to the preceding vehicle and, most
importantly, brake operation to ensure a
safe stopping distance, always remains
with the driver.
Complex driving situations are not always
fully recognized by the Distronic. This could
result in wrong or missing distance
warnings.
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Warning!
The Distronic adaptive cruise control is not
a substitute for active driving involvement.
It does not react to pedestrians or on
stationary objects, nor does it recognize or
predict the lane curvature or the movement
of preceding vehicles.
The Distronic can only apply 20% of the
maximum braking power of the vehicle.
It is the driver’s responsibility at all times to
be attentive to the road, weather and traffic
conditions. Additionally, the driver must
provide the steering, braking and other
driving inputs necessary to remain in
control of the vehicle.
High-frequency sources such as toll
stations, speed measuring systems etc.
can cause the Distronic system to
malfunction.
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Warning!
The Distronic requires familiarity with its
operational characteristics. We strongly
recommend that you review the following
information carefully before operating the
system.
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Warning!
The Distronic cannot take road and traffic
conditions into account. Only use the
Distronic if the road, weather and traffic
conditions make it advisable to travel at a
constant speed.
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Warning!
Use of the Distronic can be dangerous on
slippery roads. Rapid changes in tire
traction can result in wheel spin and loss of
control.
The Distronic does not function in adverse
sight and distance conditions. Do not use
the Distronic during conditions of fog,
heavy rain, snow or sleet.
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Warning!
The Distronic cannot take weather
conditions into account. Switch off the
Distronic or do not switch it on if:
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roads are slippery or covered with snow
or ice. The wheels could lose traction
Controls in detail