SSP 396 - EN - Lane Change Assist.pdf

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Service Training
Self-study Programme 396
Lane Change Assist
Design and function
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Lane change assist is a further technical innovation in
driver assistance systems. This system is designed to
prevent accidents.
This self-study programme explains how this kind of
driver assistance system works in Volkswagen
vehicles. The system informs and warns the driver
about hazards when changing lane on motorways
and dual-carriageways.
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NEW
Important
Note
The self-study programme shows the design and
function of new developments.
The contents will not be updated.
For current testing, adjustment and repair
instructions, refer to the relevant
service literature.
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Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Components and their locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Monitoring procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Incorporation in the vehicle networking concept . . . . . . . . . . . . . . . . . . . . . .14
Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Test Yourself . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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Introduction
General description
Situation
A frequent cause of accidents is failing to see vehicles
when changing lanes on multi-lane roads. In 2005,
there were approx. 5000 accidents involving personal
injury and property damage that were caused partly
by mistakes when changing lane.
Driver assistance systems can contribute to
reducing accidents in these traffic situations and warn
the driver about possible dangers in good time.
Dangers when changing lane
Blind spot
If a vehicle is travelling in the lane next to you, there is
a danger that it is in the blind spot of the rear-view
mirrors and you will therefore not see it when you
change lane.
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Reducing risks when changing lane
The lane change assist monitors the space next to and
behind the vehicle with the aid of radar beams.
The driver will be informed if there is a vehicle in the
monitored area or if a vehicle is approaching at
a higher speed.
The risk of accident is thus reduced by the lane
change assist and therefore contributes to safety.
If the driver is planning to change lane in this situation
and indicates this by activating the turn signal, the
system will issue a warning.
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