Hi, I have a 2002 Audi s6 avant quattro and every now and then when i start the car up its fine, once i drive down the road a ways for about 5 mins the traction control and abs lights come on until i shut the car off. I can turn the car back on and sometimes it will come back on other times it will stay off til the next time. I have done some research and some say it is the abs module and others start saying other stuff so i dont really know and was wondering if anyone had any information. Thanks guys.