Factory Interactive Sat Kit

Installed a Satellite Radio kit from Factory Interactive several years ago in a 2006 Prius. It has worked great for years, but then yesterday it stopped saying it can't acquire a signal. The Sat signal is fine, used to portable Sat radio and had no problems with the signal.

My thinking is the issue may be between the antenna and the Sat box, hoping a connection just came lose. I'm thinking is the issue was a back box the radio wouldn't say it couldn't acquire a signal, but instead just be blank.

So I'm wondering if anyone else has had a similar issue with their Factory Interactive Satellite Radio and how they fixed it?

But I'm not looking forward to removing the back seat to get to the Satellite control box above the rear wheel well.