car does not register that it is in park when it is
 

My 2017 Clubman all 4 S is having an issue with the computer saying the car is not in Park, when it is. I am wondering if this is a common problem? I took it in to dealership and they say its about a 1800.00 repair.( Must replace shifting unit) Although they are going to cover part of the repair as time wise I am under warranty, but miles wise over, I think this is a flaw with mini. I would appreciate any feedback or comments if anyone has had similar problem.