TL;DR - If you’re HD Radio isn’t working, go get your battery (12v) checked!
HD radio stopped working a few months back. Tried everything from resets to pulling fuses and more. Couldn’t figure out why.
Coincidentally, and I’m only realizing this now, the car started having low battery signs. Radio wouldn’t stay on as long when I shut car off, things like that.
Anyways, car finally wouldn’t start, or I could trick it at least until the hybrid battery was drained. Replaced the battery and now HD radio works again! Wonder if because it was low on charge it wasn’t powering that aspect.
So, if your HD radio isn’t working, maybe that’s a sign of a low battery? Who knows.
Hope this helps someone!