On a 1999 Audi A6, the wiper relay is typically located in the relay panel, which is found in the driver's side footwell. To access it, you'll need to remove the cover of the relay panel. The specific relay for the windshield wipers is usually labeled in the diagram on the panel cover. If you're having difficulty locating it, consult the owner's manual for detailed information.
With a screwdriver
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no.
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because of the flashers relay in dash board.