4x4/DSC warning light on

[mihai]

hey guys. i have a 2006 3.0i X5 with 87k miles on it.
i recently got the car and i didn't really drive it because i wanted to change a few things before. ever since i got the car i have the tire pressure warning light on and the 4x4 warning light comes on after about 100-200 meters of driving. no other warning lights.
i did some research on google and most of the people that have the 4x4 light on, also have the break and abs on also. this is not my case.
i found several others that had the 4x4 light on as soon as they start the car, and they fixed the issue(in most cases) after changing the battery/alternator.
but in my case...in order for the 4x4 to come on, i have to drive the car.
has anyone had this exact issue?

thanks a lot!