Thank you all for the advice! I was about to order an ABS control module for 2002 ML 320. However after reading maybe I should check the wiring first.

Only issue we have that has not been duplicated is that at some points our ABS pump will start for no reason. The dash lights come on and the pump continues to run even after the car is shut off! The only way to stop is to remove the relay, after which we are good for a few days untill it does it again.

Has anyone seen this???

Thanks in advance
Ray