Welcome to the Group
The way the ATTESSA system works is when wheel speed variance it engages the elctro-magnetic clutch inside the transfer case.
Under normal driving conditions and accelerating at ~<1/4-1/2 throttle application (depending on input from the steering angle,decel/G, and numerous other sensors) all the torque is applied to the rear wheels and no current is applied to the magnet. Once a variance of somewhere around 2-3 mph between any of the wheels, current is increased to the magnet in accordance to what is needed to regain traction. Most of the time the VDC will momentarily cut throttle control and fuel injector pulse to assist your G in regaining traction.
If your front wheels are turning when they are not supposed to be you may have an issue. This is one of those things you may have to bite the bullet on, having it properly diagnosed will give you the piece of mind knowing that it's running the way it should be. Depending on what if anything is wrong it may be covered under warranty, hopefully it is for your sake.
You should have gone for an extended warranty, these cars (when out of warranty) are not cheap to fix, general component failure is not common even with crazy mileage. Some things do wear over time and there are countless electronic devices that have serviceable lives. You might want to think about putting some cash aside to cover incidentals that may pop up.