The installation worked almost perfectly. You have to really fumble and press the push-fit visor body in the car. The microphone must be laid under the dashboard. I was lucky for me I could well move everything with a lot of fumbling. You need a nice day, a lot of time and a helper. When the installation not to trusts, you should go to the workshop. The Bavarian with the iPhone will not pop up right away. I needed a lot of attempts. Otherwise, everything works perfectly. Play Siri at your fingertips and audio files from iPhone works very well. Making calls is also fun. Only the display and navigating through a USB stick does not work so well. This should be done at a red light, because you have to take quite a long time from the street views.