Both dipped and full bean used to be fine on my wifes 2000 A6 Avant, normal bulbs, but of late they are just plain *****. I am convinced they are not working properly. Can someone confirm the various stages of brightness. On dipped beam with the ignition off get just side lights. On dipped beam with the ignition on get dipped light, this is where I seem to recall the lights got brighter when the engine was started, can someone confirm/deny this because they don't now and its like driving around without them being on. Thanks.