I am sure you have had many responses to this thread. I too have a 98 ML320 that has had the ETS and ABS lights "stay on", and planned to look into your solution this weekend. Was wondering if you had input on how often this solution resolved the problem, or where there other solutions that worked as well? just curious. Aslo, I have not looked for the ABS pump on my car, Is it located near the drivers side headlamP?