Welcome to the forums.
As this is a used TT you need to be double sure everything works BEFORE you pull it off the lot because once it is off and something goes south it's on you.
If the dealer will not fix a problem walk away.
To reiterate, if something does not work and the dealer will not fix it BEFORE you pull it off the lot, leave.
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping