Does this smell like chloroform to you?
I love my '05 Mag RT and my dealer is great. Having said that, they just replaced the regulator for the rear passenger side window again for the 2nd time in less than a year. My car has ZERO other problems but this particular bug seems to be a real PITA. I'm planning on keeping my Mag for a while and now I'm thinking I need to spring for the $1.200 for an extended warranty so I can keep getting this friggin' part replaced. This was a known issue with '05 300C and Magnums but I thought the first replacement was with a unit that fixed the problem. Well I can't complain I guess, I have not had any other problems with mine and I can drive down the highway with no hands and the car tracks straight. Your mileage may vary.