My friend's car is BMW X5 2006. And I found the odometer is stopping when we go to a bar last night . And my friend when to buy a tool that he can repair it by himself. So he asked me to give him some ideas, I found a tool named tacho universal 2008. But I don't know anything about it , and I never buy anything in such a web. Is there anyone know about it or the web .Could you tell me ?Thanks.