Yes, call Monaco 877-466-6226 and have the last six of your vin handy. I'd check for 12V on the large red cables in the front run box under your feet... outside. If you have 12V then which boards are not lit up before calling.
Probably in the bathroom there is a 12V fuse panel... 12V there? It gets it's power from the back run box on the right in the engine bay.
And the simplest solution... turn on the disconnect switch by the door BUT the seats are not on that part of the 12V system usually.
This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Sold 04 Dynasty to our son after 14 great years.
Upgraded with a 08 HR Navigator 45’...