I have a 2007 X3. Keeps getting Service Engine light every 2000 miles. I bought it as certified pre owned in 2007 May. So far I have been to service for about 15 times (This is real number, not exaggeration). Dealer keeps saying they don't know what's wrong, they just do whatever BMW engineers tells them to do and looks like BMW engineers haven't been able to figure out what's wrog so far. Every time they find a new excuse on what's wrong. If they can't even find the reason behind such a small issue, one wonders about the accuracy of their claims towards their "intelligent" safety features - its probably just a claim.