NHTSA Complaint #11234736 — 2012 HYUNDAI ACCENT

DRIVING ON THE HIGHWAY I HEARD A KNOCKING IN THE ENGINE. THE CHECK ENGINE LIGHT CAME ON. I TOOK THE VEHICLE TO GET THE LIGHT CHECKED FOR A CODE AND WAS TOLD THE KNOCK SENSOR NEEDED REPLACING. TOOK THE CAR TO THE DEALER I PURCHASED IT FROM AND DEALER SAID THERE WAS NO CODE AND NO HISTORY OF A CODE SO THEY COULD DO NOTHING ABOUT IT AFTER I TOLD THEM HOW TO REPLICATE THE KNOCKING. DEALER RELEASED THE CAR. TWO DAYS LATER WHILE DRIVING ON THE HIGHWAY THE LIGHT CAME BACK ON AND THE ENGINE CONTINUED KNOCKING. I TOOK IT STRAIGHT TO THE DEALER AGAIN AND THEY WERE ABLE TO REPLICATE THE ISSUE AND FIND A CODE. THE DEALER CONTACTED THE MANUFACTURER ABOUT THE CODE AND THE MANUFACTURER RECOMMENDED APPLYING A PATCH TO THE KNOCK SENSOR AND, ACCORDING TO THE DEALER "SEE WHAT HAPPENS". THE DEALER PERFORMED THE PATCH AND RELEASED THE VEHICLE TO ME. THE VERY NEXT DAY I WAS DRIVING HOME AFTER WORK ON THE HIGHWAY AND THE ODOMETER WENT FROM 3000RPM'S TO 0. WHILE I COULD TRY TO ENGAGE THE ACCELERATOR AND COULD HEAR THE ENGINE REV NO RPMS REGISTERED. THE VEHICLE WENT INTO AN IDLE STATE AND WOULD NOT REACT. CAUSING MANY NEAR ACCIDENTS I WAS ABLE TO GET THE CAR TO THE SHOULDER BEFORE IT BECAME STATIONARY. ATTEMPTED TO RESTART CAR A DOZEN TIMES AND THE RPM'S WOULD NOT REGISTER STILL.CAR HAS NOW BEEN WITH THE DEALER WHO HAS NOT BEEN ABLE TO REPLICATE THE ISSUE AND HAS NOT REACHED OUT TO THE MANUFACTURER. THE CAUSE AND EFFECT OF AN ISSUE HAPPENING AFTER APPLYING A COMPUTER PATCH IS NOT BEING INVESTIGATED NOR DISCUSSED WITH THE MANUFACTURER.