2015 Hyundai Sonata UNKNOWN OR OTHER

WHILE TRAVELING ON I-65 I ACCIDENTALLY ENGAGED THE DRIVERS REAR WINDOW SWITCH AND THE WINDOW ROLLED DOWN ABOUT HALF WAY. ALL OF A SUDDEN A LOUD WHOMP, WHOMP, NOISE STARTED AND THE WHOLE CAR SHOOK AND THE STEERING WHEEL STARTED TO VIBRATE EXCESSIVELY. I REALLY THOUGHT THE CAR WAS ABOUT TO COME APART AT 65 MPH. IT TOOK ONLY A FEW SECONDS TO REALIZE WHAT HAD HAPPENED, UPON ROLLING THE WINDOW UP STABILITY RETURNED INSTANTLY. TO TEST IF WHAT HAD HAPPENED WAS REAL I PURPOSELY LET DOWN THE REAR PASSENGER SIDE WINDOW DOWN AND THE EXTREMELY LOUD NOISE AND INSTABILITY IMMEDIATELY RETURNED AND JUST AS QUICKLY DISAPPEARED WHEN I LET UP THE REAR WINDOW. THE A/C WAS ON, WHETHER OR NOT THAT EFFECTED THE PROBLEM, I DON'T KNOW. THE WHOLE EPISODE SCARRED ME AND MY WIFE SO BAD WE ARE NOW LOOKING FOR ANOTHER CAR. I AM NOT EXAGGERATING THIS INCIDENT. THE WHOLE REAR END OF THE CAR SEEMED AS IF IT WAS BEING HIT FROM EACH SIDE INDEPENDENTLY CAUSING THE REAR END TO SHIFT ABOUT A FOOT FROM LEFT TO RIGHT . I WILL NOT BE KEEPING THIS CAR.

MY DASHBOARD MONITOR SAYS REPAIR ON OFF AND THEN I SEE A WRENCH. THIS SIGNAL/WARNING STAYS ON WHETHER I AM STATIONARY OR IN MOTION. WHAT DOES THIS MEAN?

I AM WRITING IN REGARDS TO MY NEW 2015 HYUNDAI SONATA ECO THAT I PURCHASED IN MAY 2015 FROM MCCARTHY HYUNDAI AUTOMOTIVE IN OLATHE, KANSAS. SHORTLY AFTER BRINGING IT HOME, I NOTICED THAT EACH TIME THE CAR WAS STARTED ON A COLD START, IT WOULD HESITATE AND PAUSE UPON ACCELERATION WHEN I WOULD TAKE OFF. AFTER THE CAR WARMED UP, IT WAS MUCH BETTER BUT STILL WOULD PAUSE AND HESITATE SOMETIMES WHEN I WAS NEEDING TO ACCELERATE QUICKLY. I TOOK THE CAR 4 SEPARATE TIMES TO MCCARTHY HYUNDAI SERVICE DEPT. IN OLATHE. EACH TIME, THEY WOULD ONLY SAY THAT THE CAR IS 'OPERATING AS DESIGNED' AND THAT THIS IS ONE OF THE CHARACTERISTICS OF THE NEW ECO'S SINCE THEY HAVE THE DUAL CLUTCH TRANSMISSION. WE DROVE 4 OTHER ECO'S AND EXPERIENCED THE SAME PROBLEM. HOWEVER, THEY DID ADMIT THAT IT SEEMED ABNORMAL AND POSSIBLY A PATCH/UPDATE WILL COME OUT IN THE FUTURE TO CORRECT THE PROBLEM. UNFORTUNATELY, THIS COULD TAKE MANY YEARS OR NOT AT ALL. THERE IS NO WAY OF KNOWING. ONE OF THE TIMES THAT THE CAR WAS AT THEIR SERVICE CENTER, THEY DID FIND A FAULTY FUEL PUMP AND REPLACED IT. THIS ALONE DID NOT TAKE CARE OF THE ISSUE THAT I AM EXPERIENCING WITH THE CAR. MY MAIN CONCERN AT THIS POINT IS THE SAFETY ISSUE. I DO NOT KNOW WHEN THE CAR WILL OR WON'T HESITATE AND PAUSE UPON ACCELERATION. I LIVE IN A METROPOLITAN AREA AND DRIVE IN A LOT OF TRAFFIC. THERE ARE MANY TIMES THAT I NEED TO BE ABLE TO MERGE INTO TRAFFIC AND MANY OTHER REASONS WHEN I MUST DEPEND ON MY CAR ACCELERATING LIKE A NORMAL CAR DOES. IT DOES NOT. IF THERE IS ANY WAY THAT YOU CAN HELP OR LOOK INTO THIS ISSUE WITH THE 2015 HYUNDAI SONATA ECO'S, I WOULD GREATLY APPRECIATE IT. IT COULD SAVE LIVES.