Software problems of the 2001 Nissan Pathfinder

My complaint is quite the same as I can see all ready listed on this site. I have a 2001 Nissan Pathfinder which I purchased in 2004. I have had to replace my sway bar which no one especially the dealer knows how it got bent and needed to be replaced. My 6cd bose changer also shut down on me in 2007 just stop working and not ejecting cds and doing a click click noise all the time I have two cds in there I can not remove or get out. According to Nissan they don't handle these issues and do not fix them they replace the whole cd changer for $700-$800. This is a continuous problem and issue with them and their sister companies with the bose system the vehicles are provided with when you purchase them. You do not order the system it comes with the vehicle but they wont accept responsibility nor fix it. I also had the engine light problem and took to a mechanic whom stated was the catalytic converter code on the diagnostic test and had to take to Nissan because they would not touch the vehicle and was still under manufacturer warranty being under 80,000. Quote per Nissan all it was is an electrical computer upgrade code. Needed to upgrade my electrical computer software?????? the engine light came on then went off within a couple of weeks and then came back on and stayed on and never shut off until Nissan reprogrammed the system. I also had my muffler fall completely off from the back end up until the middle part. Was totally rusted and came right off and of course it fell off right after Nissan passed me for my inspection w/ emissions 30 days prior??? I see all these complaints and for years and nothing being done nor are they taking care of anything that is obviously repetitious on the site all the same common complaints but yet Nissan not doing anything nor this site to help us consumers and have Nissan take responsibility for all of this.