I had a long drive on Christmas, all the sudden the ASR light went on, so I parked my car and shut it off,then I turned the engine back on again, the light went off, so I kept driving for about one hour and the light went on again. so everytime when the light goes on, I have to shut the engine off and turn it back on to let the light goes off. what is wrong with my car??

Regards,
Stephen