Just Failed the test on my E53 3.0d on abs light not working it does not come on when i turn on the ignition even though the battery went dead and the abs light was on but went off after a minute. any suggestions appriciated.

My second problem is the sat nav head unit is not working lines keep running up the screen i might try a new ribbon cable but i dont know the part number if anyone could post a link that would be great of where to buy one.