Long time lurking first time posting. Had a question about the diff lock traction control switch. We got hit hard here with a colorado low. Lots of snow. I went to use my wifes sorento, got into some thick stuff. Not stuck but enough that I wanted to use the diff lock. Low and behold it's not engaging and the light on the dash isnt coming on. Neither is the traction control switch. I checked some fuses, not all of them some I wasnt sure what they were so I left them alone. The ones I checked were not blown. wondering if anyone had run into this issue at all. Thanks for looking.