My truck is 3 months old and battery was dead this morning (No clue what drained the battery). After jumpstarting the truck the 'Service Trailer Brake System' warning was on and I couldn't dismiss the message as the toggle button wouldn't work. On top of that steering wheel heating wasn't working. Can this happen due to a dead battery until sufficient charge is restored to the battery? After driving for a while and shutting off and restarting truck warning wasn't on anymore. I recently moved the camper into storage and unplugged the wiring harness while truck was running and was making sure that would have caused some internal issue that would drain battery.