One problem related to speed sensor has been reported for the 2001 Mercedes Benz ML320. The most recently reported issues are listed below.
I am having safety issues with my 2001 Mercedes Benz ml 320 with a esp bas light coming on and locking front brake causing the abs to come on and stop SUV. To avoid an accident and almost getting rear ended with my kids in car. Contacted mercedes dealer and cant guarantee what problem is already changed brake light switch 2 times said it could be abs pump {800} or wheel speed sensors {1200} or yaw sensor, ignition switch, maybe even computer but said they could not guarantee to fix this problem. Mercedes benz should have a recall on this issue it has been going on for years some one is going to get killed. Spoke to benz at corporate and they only say bring it to the dealer who does not know how to fix this problem. Hope I can get a answer to this situation.