So many problems with my 04 Touareg
 

I purchased an 04 v8 touareg in May. Since then I've had to have the key module replaced $775.00, the tire monitor system keeps failing, which is another $700.00 to replace the batteries in the tires, I have a faulty tire on board, and now my fan is staying on after it is shut off. Does anyone know if I can return this car to the dealer? It's has cost me 1800.00 and I've only had it for 3 months. Also, I don't know a lot about cars, but I would like to try and get some of these issues fixed without going to the dealer. Any suggestions?