I must say, this forum is awesome. I have had my 05 XF for about 2 months and love it. Then, the other day I got the dreaded "Check Engine" light. Did a search on this forum and found out that I could disconnect the negative battery terminal and possibly clear the light. Well, it worked and the light did not return. Then today I decided to take her out on the road and the BAS ESP light was on....I thought, oh no, I hope this isn't a sign of things to come...so, I went straight back home and did another search to find out that the BAS ESP light will come on after disconnecting the battery! I followed the advise from the forum on resetting it and once again...saved by CrossfireForum. I also went ahead and purchased an Actron OBD II Code Reader and it says I have no errors.