I just bought this car and was told it was AWD. I noticed it is 4WD. My car feels like it is dragging or like a wheel or brake is locked and when driving at about 35 - 40 MPH it sometimes gives a bucking feeling. I went in the manual to see if I needed to do something special with the 4WD that might be causing the problem. All the manual talked about is the indicator light that should come on when I turn the key on. Neither this or a TCS light come on. I am scared to drive my vehicle if there is something wrong with either of these systems and now that I notice the lights not coming on, I think there must be something wrong with it for sure.