After reading responses to Benzmark23's similar post thought I'd add some info about mine: Had my usual benz shop pull the codes. He said there aren't any. System works very well once I turn off the EC light. You'd never know anything was amiss. Could I have a problem with the temp or pressure switch at the drier? I noticed the plastic connector on the temp switch is cracked, doesn't look like any wires are broken though. Are these the "input sensors" M.B.DOC refered to? Thanks, Dan