Sorry circmand. Didn't mean to send things so far off. As a pittance, I started searching threads but came up empty. I seem to remember someone who had a similar problem but couldn't find it.

Since the VX has a plethora of sensors, I'd have to guess one of them is getting an intermittent wrong reading. Can you have someone read it for error codes? It may be throwing a code that doesn't trigger any idiot lights.