| General notes on lane departure warning function |
| The lane departure warning function assists the driver in keeping the vehicle in its lane. If the vehicle approaches one of the detected lane markings while the system is active, the steering wheel vibrates to warn the driver that the vehicle might be about to cross one of the markings. If the driver operates the turn signal before crossing one of the lane markings (while the system is active), the system will detect that the lane change is intended and will not warn the driver. |
| The steering wheel is equipped with a vibration motor to generate the required warning vibration. The vibration motor is located under a layer of foam in the lower right spoke of the steering wheel. The vibration in the steering wheel is generated by an eccentric weight that is rotated by the motor. The motor cannot be renewed separately. If the vibration motor is defective the complete steering wheel must be renewed → Chapter. The duration of the steering wheel vibration is normally approx. one second, but varies according to the driver's reaction. |
| The camera and the lane departure warning control unit -J759- are installed together in a single housing. The entire unit has to be replaced if the camera or the control unit are defective. |
| The lane departure warning control unit -J759- is located at the top of the windscreen in the centre, level with the interior mirror. It is attached to a bracket which is bonded to the windscreen. |
| Anything that restricts the view of the camera, such as stone chips or stickers applied to the windscreen, can cause malfunctions of the system. |
| The lane departure warning button -E517- is integrated in the turn signal lever. The system can be switched on and off by pressing the button. If the lane departure warning button -E517- is defective, the complete unit (including the CCS switch -E45- and intermittent wiper switch -E22-) must be renewed → Rep. gr.94. |
Note | The message „Audi lane assist not available: currently no sensor vision“ will appear in the display if the camera is not able to detect the lane markings for longer than a defined period. This can be caused by the following: |
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| Camera vision is obstructed by dirt or ice, etc. This should be rectified accordingly. |
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| Camera vision is obstructed by condensation. Wait for condensation to clear. |
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| Lane markings not visible for long periods due to road conditions (e.g. snow-covered surface). |
| If the condensation does not clear by itself, or if the inside of the windscreen is very dirty (in the camera's range of vision), the relevant area must be cleaned by hand. To do this, remove the control unit and the backlight masking screen and clean the windscreen with cleaning fluid. Removing control unit and backlight masking screen → Chapter. |
| The lane departure warning must be calibrated correctly to ensure proper function. |
| Re-calibration is required when: |
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| The fault „No or incorrect basic setting / adaption“ is registered in the event memory. |
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| The lane departure warning control unit -J759- is renewed. |
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| The windscreen is removed or renewed. |
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| The rear axle toe setting is changed. |
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| The running gear of the vehicle is modified in any way – e.g. conversion from standard running gear to sports running gear. |
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| The vehicle level senders have been re-adapted on vehicles with electronic damping control. |
Note | Before performing a calibration of the lane departure warning system, read out the event memory and rectify any faults as necessary. The direction of travel of the vehicle must be determined in order to provide the reference position of the setting device -VAS 6430- when calibrating the lane departure warning system. Calibration of the lane departure warning system must always be performed using the wheel alignment equipment approved by VW/Audi. Always use the setting device -VAS 6430- for calibrating the lane departure warning system. |
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