CorAegean

My rear view has not worked since I've had the car. The courtesy lights underneath work, but neither the auto-dimming nor the homelink works. Homelink does not even illuminate to reset. Just dead.
I have looked for a fuse, but no luck finding one that is broken corresponding to the fuse map.

Dealer looked and told me "the tech says it probably involves replacing the mirror." I have no issue doing that, and I can obtain one on eBay—pretty good price.

Before I do, does anyone have any troubleshooting ideas? I'd really like to know for sure before I go ahead and order one.
Thanks much!