Engine Cooling System problems of the 2007 Chrysler 300

I purchased a brand new 2007 Chrysler 300l in June 2008 with 127 miles my car has been to service 7 times for numerous reasons. First in June my sunroof would not close took it in I was told fuse was bad also took it back in 12-2008 cold air was coming thru was told sunroof was misaligned. 7-2008 only had 1800 miles check engine light came on was told intake manifold tuning valve failure check engine light came in again in 12-2008(7k miles) took to service was told transmission leak fault replaced adapter left the service department 10 mins later check engine light came on again I immediately called & asked to speak with the service manager & I took my vehicle back the next day which I was told they found no problem why check engine light was illuminated & found no problem stored code for short runner valve control to reset check engine light. Been having constant problems with brakes grinding & squeaking since 2k miles took car to service in 8-2008 (3k miles)complaining of brakes was told found no problem brakes were at 95% front & rear pads still heard brakes noise complained to customer service & took car back to service in 9-2008 went for test ride with service manager he stated it was my front pads brought car back they changed my front pads(4k miles). Still heard noise called customer service to complain about braked in 10-2008 took my car to another service department (5k miles) they stated it was my rear brakes & rotors which they replaced took it back 12- 2008 I was told my brakes were at 50% & 2 days later I was told my brakes lining was 8-9 mm. I asked the service manager for a complete detailed summary of my car history I found out a customer complained about brakes shake when applied with only 107 miles on the car 4-2008 the service department stated front rotors out of round replace front rotors. Also some electrical work was done in 3-2008. I have filed a lemon law with Chrysler & I also reached out to an attorney to handle my case.