SIGH … well this fix has turned out to have occasional quote marks around it. It mostly has worked and on short local trips has always worked. When on longer ones of an hour or so it has quit working a couple of times. I could resuscitate it with the procedure, but that really seems now only a stopgap.
Of course, the weather has been and expects to be beastly hot so I am loathe to get into the the process of sussing it out. It seems heat rtelated though - the longer it works correctly, the more a component heats up and )(it seems) is then lore likely to stop because of the internal heat generated.
Idf it is the relay, of course, that would make sense. If it is the climate “brain” then I’d say it acts more like a heat related seperation of some soldered component only to work when it cooled down sufficiently.
I am perplexed and a bit bummed out by the absence of help out in the etherworld. I am loathe to go to the dealer as I have always reliably relied on the Pattern Failures as recorded here and, hopefully, elsewhere.
So I am casting a wider net in the hopes that those pattern failure gods will show themselves and we can move on.