I have a 2011 cx9. I'm having the 4wd light come on. The issue doesn't appear to be the solenoid because when I drive it 8n the rain it will go off for a couple of weeks. I got it to go off by washing the under carriage once but haven't tried again yet. This has happened several times. I inspected the underside and don't see any obvious wire issues. Any one hear of this?