Mine works perfectly on both our mk5's, you think the auto wipers are bad on vw try a Renault
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and the reason why they reset everytime you get back in the car and start engine is because you wouldn't want the auto wiper to kick straight in on a cold morning over a frosty screen now would you otherwise you would need to remember to turn auto mode off everytime you got out of the car
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clever little system, good old vw thought of everything