Have most people done an IWE here?
I have one done, but it’s sort of in my control.
If you disengage 4wd while it’s still below zero, it fails. I don’t think I’ve heard of one failing if it’s above zero and the snow/slush melted out.
Am I out to lunch here? Mine happened driving to Sask with slush and it was colder yet in Saskatoon. When we went to 2wd, it didn’t have enough vacuum/couldn’t overcome the built up snow and caused the grindy noises. Dealer fixed it right up warranty.