2015 Mercedes Benz Sprinter 3500

WE WERE TRAVELING ON FLAT, OPEN INTERSTATE ROADWAY IN RAINY WEATHER AT NIGHT WITH CRUISE CONTROL SET WHEN THE VEHICLE UNEXPECTEDLY ACCELERATED QUICKLY. I NOTICED THE VEHICLE FELT LIKE IT DOWNSHIFTED AND FELT LIKE IT WAS ACCELERATING HARD. I LOOKED AT SPEEDOMETER AND SPEED HAD INCREASED BY MORE THAN 5 MPH OVER WHAT CRUISE WAS SET IN A MATTER OF 4 SECONDS OR SO. I THEN APPLIED PRESSURE TO BRAKE PEDAL AT WHICH POINT THE VEHICLE FELT LIKE BRAKE SYSTEM PULSED 4 TIMES, AND CRUISE CONTROL DID NOT APPEAR TO DISENGAGE. I THEN HIT BRAKES AGAIN, AND PUSHED THE CRUISE CONTROL LEVEL TOWARD DASH AND CRUISE DISENGAGED THIS TIME. DURING OR IMMEDIATELY AFTER THIS EVENT, WARNING LIGHTS CAME ON IN DASH FOR ABS, ESP, VISIT WORKSHOP, AND OTHER WARNING LIGHTS THAT SAFETY FEATURES WERE DISABLED SUCH AS FORWARD COLLISION, BLIND SPOT INDICATORS IN MIRROR, ETC. THESE WARNING LIGHTS HAVE OCCASIONALLY WENT OFF FOR SHORT PERIODS OF TIME, BUT HAVE REMAINED ON FOR MOST OF TIME. SOMETIMES THEY WILL BE OFF WHEN STARTED, BUT COME ON AFTER TOUCHING BRAKE PEDAL. NO WARNING LIGHTS WERE ON PRIOR TO THIS EVENT.

I WAS DRIVING ON AN INTERSTATE HWY AND THE ABS AND ESP WARNING MALFUNCTION OCCURED WITH A VISIT WORKSHOP MESSAGE. THE ENGINE RPM REVED UP AND THE VEHICLE SLOWED TO 40 MPH. I WAS ABLE TO GET TO A SAFE PLACE. CONSULTATION WITH A REPAIR FACILITY DETERMINED THE CAUSE TO BE THE WHEEL SPEED SENSORS ON THE REAR WHEELS. FURTHER INVESTIGATION REVEALED THIS SAME THING PREVIOUSLY OCCURED WITH THE PREVIOUS OWNER WITH 4000 MILES ON THE VEHICLE THE SPEED SENSORS WERE REPLACED AT FACTORY AUTH DEALER AT THAT TIME. THIS INCIDENT I AM DESCRIBING OCCURED AT 12000 MILES ON THE VEHICLE. I WAS 700 MILES FROM HOME AND THE NEAREST FACTORY REPAIR FACILITY'S ONLY EMERGENCY OPENING WAS 3 DAYS IN THE FUTURE. THE INDEPENDENT REPAIR FACILITY THAT DIAGNOSED THE PROBLEM WAS NOT ABLE TO PERFORM THE NECESSARY REPAIRS. I DROVE HOME IN LIMP MODE. 4 SPEED SENSORS WERE PURCHASED AT A MERCEDES DEALER FOR A COST OF $900.00 AND REPLACED BY MYSELF. PRIOR TO REPLACING THE SENSORS THE SECOND TIME THE ABS AND ESP WARNING OCCURED BRIEFLY AND CLEARED ON THEIR OWN. MUCH RESEARCH HAS SHOWN THIS IS A VERY COMMON FAILURE OF THESE VEHICLES.

I WAS DRIVING AT 65 MILES AN HOUR ON INTERSTATE AND THE VEHICLE DECELERATED AND THEN ACCELERATED AND CONTINUED TO ACCELERATE. THE CRUISE CONTROL WAS NOT ON AT THE TIME. I TRIED TO BRAKE BUT THE VEHICLE CONTINUED TO TRY TO ACCELERATE AS I DEPRESSED THE BRAKE PETAL. THE ONLY WAY TO STOP THIS WAS TO PHYSICALLY PUT THE VEHICLE IN NEUTRAL. AFTER SITTING FOR A PERIOD OF TIME MULTIPLE ALARMS WERE DISPLAYED. I WAS ABLE TO DRIVE AGAIN ONCE THE VEHICLE WAS IN ALARM MODE AND THE ANTI LOCK BRAKING SYSTEM HAD DISABLED ITSELF. I AM AN EXPERIENCE DRIVER. I AM AFRAID THAT ANOTHER PERSON MAY HAVE PANICKED AND THE RESULT MAY HAVE BEEN MUCH DIFFERENT. THE ATTACHED IMAGES SHOWS THE ALARMS THAT WERE PRESENT AFTER THE INCIDENT, ABS ALARM, ESP ALARM, AND ANTI TRACTION LIGHT THE PROBLEM WAS ULTIMATELY FOUND TO BE A FAULTY WHEEL SPEED SENSOR ON THE DRIVER SIDE REAR TIRE. VERY DANGEROUS, I HAVE ALSO FOUND OTHER TESTIMONIALS ONLINE SINCE THIS INCIDENT