This is EXACTLY the same problem I have(as big.mike described in his archival post from the earlier thread). I'm starting a new thread because the old one will disappear from many readers listing due to time-out settings. Has anyone been able to identify the cause yet? Like many others out there (I imagine), I think this behavior is a pain in the ***. After reading other's accounts of trying the more intuitively obvious things no avail, I want to avoid too much effort until something repeatable across the troubled population of vehicles has materialized as the most likely cause. Thanks.