No one is going to drive or take you the FCT. Even if your plane arrives at an apron, the best you are going to get is a plane-side limo that will take you to the bowels of the terminal, where you are on your own to find your way to either a FCL or the FCT. Since the FCT is in Germany, you will have to go thru immigration before you enter Germany, exit the terminal and walk past the taxi stand to the FCT.

As an FYI for another time, if you were flying Air France via CDG, then you would be met at your arriving gate and driven to the La Première Lounge where you would indeed go thru private immigration.