Actually I had found that out about ten days ago. I cleared two stored codes (off the top of my head I don't recall what they were) and I have not had a chance to test it since. I do plan on taking it for a drive and doing a flush this sunday if my week finishes decently by saturday night.There are a number of data points you can get from the Climatronic through the front panel. There are a number of write-ups on how to run diagnostics from the head unit. Do a search on climatronic diagnostics to narrow it down.