I am curious if any 2010 FWD TL owners also have this issue when at times the steering wheel just feels real loose like there's no resistance and at times feels tight like how sports car feels while driving. I checked the tire pressure which is the correct psi and even had 2-3 wheels alignment done but doesn't seem to get rid of this annoying problem

 

I've had this happen with my tires being cold and needing to warm them up for about 5-6 miles before they felt way better. Harder to get heat into the rears so it feels a bit off in the rear until they warm up.