SighAlso, today I went to use remote start and that isn’t working. Going to start with main battery and search on my own to see if there is an aux battery for start/ stop system
Your Cherokee only has ONE battery. Some service poeple at Jeep dealerships mistake a Cherokee for a Grand Cherokee... because V6  Grand Cherokees have 2 batteries (and V6 Wranglers).
Don't let them touch your Jeep and let them know that you know there is only one battery (the one under the hood).
My advice : go to a big auto parts store, they willl test your battery for FREE (ask before you go, to make sure). Do not let this dewaler rip you off... Grrr....
Remote start won't work if you have a Check engine light condition. Is this the case ?
Late edit to add 'Grand' up there in first paragraph