These cars are doing weird things I tell you..

My mom just bought a 07 XLE V6 and had XM put in. She would change the channel and after 5 seconds or so it would change it up a channel OR 2 by itself. It would do this randomly. Toyota was confused about it and tried to blame it on XM. I knew this was bull as XM does not change your channels. It has just completely stopped doing it as of 2 days ago on it's own.