The steer by wire, or DAS, system settings will only take affect if you have the drive mode selector set to personal. Do you have it set to personal or standard? Every time you start the car it will put it in standard mode, then you have to move the switch up twice to get to your personal mode.
As for the drifting when you let go of the steering wheel, do you have the technology package? Without the tech package you wont have the Lane Departure System with Active Lane control. If you do have the tech package, you can go through the intouch settings to see if its enabled.
As for the drifting when you let go of the steering wheel, do you have the technology package? Without the tech package you wont have the Lane Departure System with Active Lane control. If you do have the tech package, you can go through the intouch settings to see if its enabled.