Hi All Sometimes the abs and traction control warning lights come on on my car, it has a mind of its own when it comes on but turns back off when I turn off and back on the ignition. It is readingy abs fault 1 , I have replaced the brake pedal switch which did not cure the problem. The mechanic feel it is either the abs thrust switch or the abs pump. Any Ideas? Car is a 2003 Quattro TDI 2.5 and an auto.