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I have the same problem Was there ever a fix found?
My hazards just come on when they feel like. I thought maybe some water was getting in to the hazards and causing a false connection (as if the button had been pressed), but its more random than that. Sometimes they switch on for one click and go straight of, sometimes three, sometimes on constantly.
If thee is a fix that would be amazing!
I found your post from 3 years asking if anyone had found a solution to the above issue. I have already replaced my switcher and I'm thinking it may be the general module or 3-5? relay but really dont know. Did you ever find out what the issue was? If so any details would be greatly appreciated.