You are welcome, I like it when people LISTEN, it does little good for me to put effort into helping people when they wont even try - you tried, you learned and now you know what was wrong with your car!

As to the procedure, this is the kind of stuff I've been doing for a living since 1982.

 

I'm having a similar issue with my 2005 limited. I was driving it and I couldn't lower the radio volume and I couldn't shut it off. Went to drive it 2 days later and the radio didn't turn on. Wasn't too worried about it. The next day the battery was dead. I did the diagnostics you suggested but found everything is ok. What would you suggest I do from here as I don't want to be stranded? The battery is less than a year old.

 

I would remove the fuse for the radio and see if that helps since you know it has been acting strange. It sounds like a short.

 

You have what is the most difficult issue to resolve: An intermittent electronic failure. That is, based on what you typed, the radio is acting up in such a way that it does not always turn off, taking the battery down. Since this is all I know about the car, I'd replace the radio right away. That, or yank BOTH fuses to the radio and give it a few days - if the battery goes dead again, you know there is something else wrong.

But the symptoms you talk about are similar to how my factory radio died. For $85, a new JVC from Best Buy was the best move I could make - and it sure sounds better than the old factory head.

 

I didn't realize there were two fuses for the radio? One for the radio and one for the amp?

 

One fuse is the battery feed to the radio (provides constant power for memory support, etc.)
One is the accessory/ignition feed (tells the radio when the key is on).

There is an additional fuse to power the amp.

The exact location/fuse numbers vary a bit by trim level and year, I believe.