As I’m sure you know the Wrangler Unlimited is rated for towing 3500 lbs. The 17’ Casita weighs about 2800 dry. The Jeep pulls it fine, plenty of power, but you definitely know it’s back there. The longer wheelbase Gladiator may be in my future. Too early to decide for sure.
It is a 17’ Spirit Deluxe. it will sleep 3. The back dinette converts to a full size bed. The side dinette converts to a narrow twin that can be made wider.
Pics here. https://casitatraveltrailers.com/spirit/
They have a huge following, similar to Jeeps.
Hope they find the real problem. I had an Infinity that drained the battery every time I left it at the airport for 3-4 days. After 6-7 trips to the dealer in the first 12 months I sold it back to them.