I have a 2004 acura mdx and the car was sitting for one week while I went on vacation. My battery went dead and also had to change the alternator at the dealers and at the same time my vtm-4 dash light came on, and upon acceleration the vsa, ! comes on. I had diagnostics performed and no codes are coming up, dealership doesn't know whats wrong and wants to continue to trouble shoot at my expense or get a new car because awd is essential for where I live. I also had the rear differential oil change and rear sensor changed to see if that was the problem. The car is running great, but no awd.