have you checked the battery's charge?
if you don't have a battery disconnect switch and it's not plugged into shore power, the trailer's parasitic power drains will empty a battery in just a few days.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package