Just purchased a 2007 IS 350. Check engine light and VSC came on shortly after I got it. Found out the CATS were removed and headers were added. Just had extensions added to move the O2 sensors which apparently fixed that issue (we'll see).
At pickup, the shop told me the ABS light and VSC light is on. Code read C1203. The code relates to the ABS ECU at a cost of 1700$ without labor. After some talk around the shop, turns out they just lowered another IS which resulted in the same code being thrown. Apparently my IS was lowered in the rear. There may be some relay box that can fix the issue. Anyone have this issue? I've search this site and found tons of people who have lowered their vehicles but no mention of this problems. Can anyone help?