2011 jeep grand cherokee overland w/hemi

purchased jeep in may of 2011, had it in the shop about 15 times already for different censors. had to remove both gas tanks to fix the one problem they said its the only one in the whole us with this problem "great" also the 4 wheel drive keeps coming on and the traction control light and the tire pressure light which wont go off even after its been reset more then 3 times. they keep telling me theres nothing wrong? We will see just dropped it off today for the tire pressure light once again. They called and said when they started the car it was off i dont belive it maybe because its been in there so many time. (lemon law) but i will see when i pick it up today.