In my automatic 02 A6 the little indicator light that highlights which gear you are in will disappear after a little while of driving. It sometimes comes back and as far as I know is always fine when I just start the car after it has been sitting for a while. Seems to drive fine even when the light is gone except I can't go in reverse. And what does it mean when it lights up all the positions (P R N D) and blinks? That happens at times too. Anybody else ever have a problem like this?