I have a 95 c220 with 120000 miles.  Intermittently, the ABS light will stay on after starting.  It will occur for 3-5 starts then go away for a while.  The battery is new and there are no detectable power issues.  The ABS seems to be functioning.  I am suspecting that the speed sensor or ABS relay may need to be replaced.  Anyone have any advice or thoughts about my suspicions before I take it to the shop?   I don't want to get hit for a $1200 ABS controller if the solution is something cheaper and simpler.  Thanks for any advice that you can offer!