Factory Unit W/ASL Swap For 1809 Scion

[imdav2u]

I swapped out the factory head unit with ASL for a Scion 1809 hu.The sound difference is amazing,but my check engine light and skid control lights came on and stayed on until swapped them back.Today at the dealership for an oil change,the tech told me it was because the Scion doesn't have ASL,that is why the lights came on.Has anyone else had this problem,and if so,how do you fix it?I have a 2008 4Runner Sport with the 6 disc stereo.