Mine works perfectly on both our mk5's, you think the auto wipers are bad on vw try a Renault
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
clever little system, good old vw thought of everything