OK, so I have been a bit annoyed with the headlight sensor not being sensitive enough - compared to my previous 335xi anyway. So, I took the senor out and cut a piece of 20% tint to fit precisely over the 'eye' of the sensor. The tint adheres to it without the use of solution as you would typically use on windows. In any event, I am very pleased with the results. The lights actually turn on when they should and typically come on when it is dreary and raining. Not sure if anyone has done this yet, but I figured I would share.