I purchased the car in August 2009. It had 36,000 miles on it. I brought it in to Mercedes Service and had it inspected for any major defects...none found. A few months later little issues arose here and there. My door locks went crazy while I drove, my trunk would not open or lock, my clock reset itself for no reason, radio would turn back on when I would turn car off and remove the key..Heat stopped working, felt like it was going to stall..I told my service rep that I could hear water coming in through somewhere...all these issues only happened on rainy days...
Well now my warranty is up and my car is back in service for strange activity happening again during rain..except this time they find a $2400 issue..my rear sam unit has water damage and corrosions...can anyone tell me if this is a normal wear and tear thing>? What exactly is a rear sam unit and why isnt it protected from water? How much does this part cost?? and should I be responsible for this when I have brought the car in from the first month of purchase to fix all these issues and they never detected such a big problem?