NHTSA Complaint #11387991 — 2017 ENTEGRA CORNERSTONE

THE DEF MEASURING DEVICE IN THE DEF TANK FAILED AT AROUND 27,500 MILES. THE DEF MEASURING DEVICE MEASURES QUANTITY AND QUALITY OF THE DEF FLUID. WHEN THIS DEVICE FAILS TO WORK PROPERLY, IT THROWS ECM CODES THAT START TO LIMIT THE ENGINE FOR SPEED AND WILL LIMIT THE MILES THE COACH CAN BE DRIVEN. IF THE COACH CONTINUES TO BE DRIVEN, THE ECM CAN DE-RATE THE ENGINE TO 5MPH. AS YOU CAN IMAGINE, A 45' LONG 13' TALL 8' WIDE COACH WEIGHING 45,000 LBS WHILE TOWING ANOTHER VEHICLE IS DE-RATED AND CAN TRAVEL AT NO MORE THAN 5MPH DOWN THE INTERSTATE WILL CREATE A HUGE PROBLEM FOR BOTH THE OWNER OF THE COACH AND THE TRAFFIC THAT IS TRAVELING AROUND IT. THE COACH IS BASICALLY YOUR HOME ON WHEELS, SO WHEN IT FAILS, IT LEAVES YOU STRANDED WHILE YOU TRY TO FIND A REPAIR SHOP WITH THE CAPABILITIES TO DO THE REPAIR. THEN IN OUR CASE WE HAD TO WAIT 2 WEEKS FOR THE PART DUE TO SO MANY FAILURES WITH THIS DEVICE AND THE MANUFACTURER COULD NOT PRODUCE ENOUGH TO FILL DEMAND. SEARCHING THE INTERNET OR USER FORUMS, YOU CAN EASILY FIND POSTS ABOUT THIS PROBLEM. WHEN THE DEVICE FAILS, YOU ARE STRANDED AND YOU CAN ONLY HOPE THAT WHEN IT HAPPENS, IT WILL BE IN A PLACE WHERE YOU CAN FIND A PLACE TO PULL OVER. THESE DEVICES DO NOT APPEAR READY FOR "PRIME TIME" AS THEY ARE FAILING FAR TOO OFTEN. I HAVE READ WHERE SOME PEOPLE HAVE SUFFERED FAILURES ON NEW COACHES WITH FEW MILES, ONLY TO HAVE IT REPAIRED AND IT FAIL AGAIN IN A FEW THOUSAND MILES. PRESSURE NEEDS TO BE PUT ON THE DEF MANUFACTURERS TO PRODUCE UNITS THAT WORK. IN OUR CASE WE HAD A 5 YEAR EMISSION SYSTEM WARRANTY. THE REPAIR COSTS RUN ABOUND 1,200 TO 2,000 TO DO A REPAIR, NOT COUNTING ANY TOWING COSTS WHICH COULD EASILY RUN INTO THE SEVERAL THOUSAND DOLLAR RANGE. THERE SHOULD BE A WAY TO ALLOW THE COACH TO BE CONTINUED TO BE USED BY DEACTIVATING THE DE-RATE OF THE ENGINE TO ALLOW A USER TO GET SAFELY TO A REPAIR FACILITY. PLEASE LOOK INTO I