Self-Study Programme 398 Audi lane assist.pdf

Service Training

Audi lane assist

Self-Study Programme 398

Preface

To mark the launch of the new Q7 premium SUV, Audi extended its range of driver assist systems to include

two new systems: the radar-assisted "Audi side assist" system and the rear-view camera. Both systems met

with a very encouraging response from customers and experts alike. They once again emphasise the fact that

Audi takes its slogan "Vorsprung durch Technik" very seriously.

A logical consequence of this is that Audi is now extending this range to include a new system:

Audi lane assist. This system helps the driver to stay in lane.

In the event that the driver is inattentive or distracted, the vibrating steering wheel can warn when the vehicle

is about to leave its lane. The aim is to help avoid accidents.

Despite the availability of this technology, however, it is still imperative that motorists only get behind the

steering wheel when they feel fit to drive. Audi lane assist is a driver assist system designed to help the driver.

However, the responsibility for staying in lane ultimately rests with the driver.

Under current plans, Audi lane assist will be available on models A4, A5, A6, Q7 and A8.

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Excellence in design & performance

Contents

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Communication structure. . . . . . . . . . . . . . . . . . . . . . . . . 18

System calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

The self-study programme teaches the design and function of new vehicle models,

new automotive parts or new technologies.

Reference

Note

The self-study programme is not a repair manual!

All values given are intended as a guideline only, and refer

to the software version valid at the time of publication of the SSP.

For maintenance and repair work, always refer to the current technical literature.

Function

Audi lane assist helps the driver to stay in lane.

A camera is used for detecting lane markers.

Audi lane assist is "on alert" when lane markers are

detected on either side of the lane in which the

vehicle is driving. When the vehicle approaches

a detected lane marker and is about to leave the

lane in which it is driving, Audi lane assist alerts the

driver by making the steering wheel vibrate. If Audi

lane assist is "on alert" and the driver indicates

before crossing a lane marker, no warning is given

because the system assumes that the lane change is

deliberate.

The steering wheel vibrates once only in order to

alert the driver when the vehicle is approaching or

crossing a detected lane marker. A second warning

is only given if the vehicle has moved a sufficient

distance away from the lane marker after the first

warning and subsequently approaches the lane

marker again. This avoids warnings being given

continuously when the vehicle is travelling in

parallel with a lane marker.

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The system is designed for use on motorways and

trunk roads. For this reason, it does not become

active until the vehicle is travelling at a speed of

approx. 65 kph or higher.

Adverse ambient conditions, e.g. dirty or snow-

covered road surface, a lane being too narrow or

ambiguous lane markers such as occur in road

works on motorways, may result in the system

being temporarily unavailable. Current system

status is indicated to the driver on the dash panel

insert.

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Note

Audi lane assist is a driver assistance system. The system helps the driver to avoid leaving

a lane inadvertently by issuing an alert warning before the vehicle crosses detected lane

markers. However, the responsibility for staying in lane ultimately rests with the driver!

Displays

Warning lamp on dash panel insert

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Possible states of the warning lamp

If the warning lamp on the dash panel insert is lit green, the system is active and "on alert" .

If the warning lamp on the dash panel insert is lit yellow, this means that the system is active

but not "on alert" due to the prevailing conditions.

In this condition, Audi lane assist does not assist the driver and gives no alert warnings .

Possible reasons for deactivation are given below.

If Audi lane assist warning lamp is not lit, then the system is inactive .

To activate the system, push the Audi lane assist button on the indicator stalk.

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