Well, the manual isn't a whole lot of help on that. Just says "switch out of range". But it's still working. You could follow that wire harness out to the end and check for a rub through. Disconnect the connector, spray it with electrical cleaner and plug it back in, if it's readily accessible. That might save you 200 bucks. If it was me, I don't know if I would bother trying to take the whole switch assembly apart or just replace it. If you run that part number on Google, a lot of the places say out of stock or special order item from the factory. So, you know that might be a long shot. There does seem to be a place on eBay that claims to have one left and a couple of used ones on there, too. Good luck.

https://www.ebay.com/itm/17537734514...3ABFBMmrD6iMpi