Ford calls it "roll stability control" or RSC for short.I have an 08 E-350, the warning light and really annoying alarm for the RSC came on yesterday after driving through a lot of snow and road slush.It also keeps turning the advace trac on and off.The dealer says they can't look at it till next week because of the holiday.Does anyone know what the problem could be?Or at least where I should start looking?Thanks