Gone the route with the proverbial lemon...its not a good feeling.
That said, I would definitely make the dealer and Jeep aware of the new issue that appeared while in their hands. Memory is telling me that you mentioned this car was to be a toad. If so, that brake will be an essential safety device when you have the dof in neutral.
2014 Jeep Cherokee LATITUDE 4X4
3.2-Liter V6 24-Valve VVT Engine
9-Speed Transmission With Jeep Active Drive II
Cold Weather Group
1st Jeep '74 J-20 that spent it's first life as a tow truck - RIP