I jut replaced my upper and lower control arms, tie rods, ball joints and Brembo brake pads on my '03 G35 sport coupe. Now the "VDC" and "Slip" lights come on and the trouble seems to be with the steering angle sensor. Apparently, I should've adjusted neutral position of steering angle sensor before running vehicle. My question is can I adjust it now or do i really have to buy a new $800 steering angle sensor? Any good advice would be greatly appreciated.

Did you get a resolution to this? I think I might have a similar issue. A body shop did an alignment (poorly) and without following infiniti procedures. Now I have 4was VDC and slip lights on... no ABS light though.

Check your brake fluid level as well.

I would assume that you can take it in, have the alignement checked, do the neutral adjustment, etc... and be good. I can't imagine that the sensor would now be dead.