Picked up our Kia Sorento and 3 days later, the tire pressure warning light came on. Pulled over and realized the steering wheel light went on and I didn't have power steering. By the time I called for vehicle assistance, the lights went off and I could drive it. First time in shop, found no problem but took some air out of tires. Then a few days later, happened again. Again, shows no problems on diagnostics!! Again car in shop--told me to pick up, then called back in 10 mins and said the mechanic took it around block another time, and the warning lights came on! So again another 4 days in the shop and they paid for a crappy rental car. Got the car out again and after a few good days, all of the warning lights started coming in!! We've opened a case with Kia Consumer Affairs and are hoping they'll replace this car for us. If not, time for arbitration(Calif Lemon Law.) Anyone else with this problem?