Colin1966

Hi I have a Audi a8 3tdi 2004. Can anybody tell me if you have had this problem with an 0003 abs code but you can't clear it on the code reader. The 0003 also shows up on the code reader as sat nav fault. I have been told it could be my body control module because of all the errors it is showing. If so does anybody know were the body control module is on the a8. Many thanks Colin