I just wanted to post the results of this, in case anyone is interested. After about 2 weeks of it being in the dealer, it turns out that all of the warning messages were caused by the throttle pedal sensor. As for the noise from teh back they said thats nothing.
Im thinking it not nothing, since it took them two weeks to figure out its a sensor. Wouldnt a sensor set a code, and be able to discover the sensor is bad like in 10 minutes or somethig.
They told me the sensor was installed the day after i droped it off, well actually the moday after i dropped it off, and they were keeping it just to check some other things out.
The whole situation is kida weird, but i didnt say anything to them. I still got a long way to got to the end of my warranty, so if anything goes wrong it will hopefully fall within the warranty period.
So after all, I cant get a locker put in, as i origionally planned.
