In the last two days, the left front wheel speed ABS sensor of my Leisure Travel Sprinter 3500 van has failed twice. Every time, just seconds before I got the ESP, ABS and Visit Workshop dashboard messages with the wheel skidding icon, I felt something snap around the front left wheel followed by a brief loss of power until the dashboard messages showed up. I read a number of posts and cannot relate my driving conditions to these of other sprinter owners with the same problem. No strong wind, the sprinter battery had been working fine, the cruise control was not being used, etc... I replaced both front wheel speed ABS sensor with Mercedes Benz ABS sensors after a MB certified mechanic scanned the car for the code of the failing component and was able to drive about 120 miles in good weather at good steady speed before one of the new ABS speed sensor failed again. Does this sound familiar? Any idea? I am leaving the Florida Keys in a few days with the Sprinter and its failed sensor and hope to make it (carefully) to Hollywood, FL, where I last replaced the wheel speed ABS sensors. I am looking for the underlying cause if the sensor failure. I am assuming it is not dirt and grit in the wheel well since the weather was great and the road conditions excellent.