NHTSA Complaint #11539850 — 2017 MERCEDES-BENZ SPRINTER 3500

The ESP and ABS warning lights went on suddenly after what sounded like a thud. The car had not run over anything. There was some initial brief chattering of the break pedal, and that subsided. The car was not near a suitable and available repair shop at the time. It was driven to complete a trip. There were several instances of break pedal chattering that led concern about the controllability of the vehicle. During the trip, it was taken to a brake shop, and the technicians felt it was likely safe to drive. Eventually after the servicing dealer first replaced the front speed sensors, the ESP unit was found to be shorted. This event is of concern because the speed sensors on the rear have been replaced on recall and the front speed sensors have been granted an extended warrantee. Both feed into the ESP unit that failed. It seems possible the previously suspect parts may have damaged the ESP unit. There appears to be a safety issue with faulty break performance in this situation. The vehicle only had about 13,000 miles on the odometer. at the time of the event. Service an repair records are available upon request