DSC/4x4/ABS/BRAKE/Traction/SelfLevel Susp. Inac ERRORS

[lemans4.8]

I have an 05 4.8is with around 56k miles. Every time I start the car and drive 5 feet, I get ABS, BRAKE, and traction light come on, followed by "DSC/ 4x4 Inac." on the DIS, then followed by "SelfLevel Susp. Inac." I know the second DIS message is very common on X5's, but does it usually proceed all the other messages? The car isn't in limp mode (can drive up to 65mph) but the car feels funny. Really don't want to go to stealership, but may have to.....

BTW, front struts were replaced 2-3yrs ago with Arnott ones. Never received a message when those went out and I had GT1 calibration/reset after replacement. Also, disconnected battery and checked fuses, all fine and problem still there. What do you guys think it is? Air module behind glovebox?

Thanks