If you search "intermittent camera" you should find the discussions about this. Unfortunately, it seems to be one of the issues that quite a few people here are having with their E70's. We had this problem and recently had the whole camera replaced AND got a software update. It's been flawless ever since. I haven't driven it at night since so I don't know if the new camera has better "night vision" but the colors are MUCH more accurate on the new camera!