When I purchased my 06 sport two weeks ago I noticed the low pressure light was on. I had the dealer put air in the tire that was causing the fault. After about 30 mins. of tire filling, they came back and said I needed to drive for about 10 mins. and the light would reset. So on my 7 hr. ride home I found the reset button on the center panel. But after driving my new X for two weeks I thought I made a terrible decision for going for the Sport package until this morning! I was checking the pressure on my 911 tires and then thought I would check the X5. What did I find? 51psi. in all four tires. My conclusion was that the dealer didn't know about the reset button and just kept filling up all the tires until the light shut off. Idiots!!!!!! Anyway, I am now the very happy and satisified owner of a 06 X5 Sport. Problem Solved. Thanks for listening.