2011 Hyundai Sonata Cruise Control Problems

When my car is turned on there is a very noticeable shake coming from the engine area. It's not that bad once the car is driving. However, I was driving 40 miles an hour when my check engine light came on, then I was unable to accelerate and my car stalled (it's an automatic car).Once my car started up again, the check engine light was flashing, and I could only drive at like 15-20 miles per hour for my speed. Made it to O'Reilly and had them run the check engine light codes for me and it popped up with the P1326 code regarding the knock signal range/performance. I recently got a check engine light code for a p0449 EVAP vent control valve (it wouldnt allow me to pump gas into the car). I'm unsure if the issues are related but wanted to provide all the details.

I changed my oil on Saturday and it now has no oil. The engine light started flashing and my engine seized up. Now it does not run at all. It turns on halfway where the dashboard turns on but the motor/engine does not turn. It appears to be white smoke coming out of the car after trying to turn it back on.

On 1/3/2024 the car was at a low speed - once when parking and once stopping at an intersection - when it suddenly accelerated without the accelerator being touched. The only way that the car stopped was that I was able to shift it into neutral. According to online forums, this has been a known issue with several Kia and Hyundai models.

This is a 'Stop Lamp Switch' issue. The car will randomly turn on the ABS light causing the ABS system to engage and not allow you to use the accelerator pedal. This is very dangerous as if you are about to merge on or off a highway the car does not allow you to correctly control your speed. This issue happens more prevalently at night time when the full beam headlights (auto or manually turn on when dark out), which is very concerning. This issue has been going on for a year now and no mechanics at Hyundai can fix or diagnose. It happened again to me this morning and came very close to causing an accident as I could not engage the accelerator pedal on a turn. Please, in the interest of safety and saving lives fix this dangerous defective part issue.

Even on a perfectly dry road, the cruise control can't be set and the traction control light comes on. The nearest dealer (75 miles away) said it was likely in need of a new brake light switch. That didn't solve the problem. Now, it is beyond the fact that the brake lights stay on whether the car is running or not. The brake light switch is clearly impacting various other functions and makes the car unsafe to drive, because vehicles following it conclude (incorrectly) that the driver is engaging the brakes. Additionally, if someone doesn't detach the battery cables when spending some time at a destination, they can be stranded as the result of a dead battery. If the manufacturer had integrity, they would replace whatever related parts are needed to make the car drive safely, They know there's a problem in such vehicles, and even the head of the nearest service department is currently stumped. And, today I was told by the manufacturer that I have to drive it to that distant dealer to see what kind of offer they might give for the car "as is". There should be a recall.

While driving on the interstate, the car suddenly stopped accelerating even though my foot was still pressing the accelerator. I took my foot off the gas pedal and let the car coast for a moment, though the deceleration seemed faster than normal coasting, almost as if the brake was slightly engaged. When I pressed the gas pedal again, it started to accelerate for a moment but then the same thing happened and it felt like the brake was engaging and the car was slowing down even though I was still pressing the gas pedal. So I took my foot off again and tried this process several more times, and in the meantime moved to the right lane and put my flashers on because I could not get the car to go more than 30 miles per hour and I was nearly hit several times. I was about to pull over when the issue seemed to resolve itself just as quickly as it had started. I called the dealership and they said because the car is not under any active recall, there's nothing they can do. This is a big safety issue! I was nearly run down by a truck! I just read that NHTSA has an active investigation for throttle issues, and that my 2011 Sonata is one of the affected vehicles. Please conclude your investigation and fix this issue before someone gets killed!

My engine keeps making a knocking sound. When I am driving it will reduce speed, and begins to idle while already driving. Which concerns me that these same issues occurred on my same year, make and model on my vehicle and some how Hyundai dealership will tell me that my car does not have a recall. 470,000 cars of the same year make, and model went in for exactly what my car is doing.

motor ticking. car gets hot. car runs rough

I WAS DOING 60 AND MY CAR JUST DIED OUT OF NO WHERE ON MARCH 9 2021. I THEN GOT IT TO START AND EVERY TIME I PICK UP SPEED IT DIES AGAIN. I SMELL WHAT MAY BE ELECTRICAL BURNING. I CALLED DEALERSHIP IN VANDAILA THEY SAID NO RECALL ON MOTOR SO I HAVE TO FIGURE THE PROBLEM OUT.

EVER SINCE I HAD A NEW ENGINE PUT IN MY CAR, MY CAR HASN'T BEEN THE SAME. IT ACTS LIKE IT DOESN'T WANT TO GO WHEN PRESSING THE GAS PEDAL RIGHT AFTER (WAS TOLD IT WAS THE ECO MODE), THEN MY DASH STARTED TO CRACK, NOW IS EXTREMELY CRACKED WHICH HAS AN AIR BAG, GAS GAGE HAS A MIND OF ITS OWN, BURNING A SEVERE AMOUNT OF OIL A WEEK SO THERE IS NO POINT IN 'CHANGING THE OIL', OIL LIGHT NEVER ONCE COMES ON LETTING ME KNOW ITS LOW, NO OIL ON MY DRIVEWAY OR UNDER THE HOOD, INTERIOR DOME LIGHT SOMETIMES DOESN'T SHUT OFF, THE BRAKE LIGHTS SHORT OUT ON A MONTHLY BASIS AND GET PULLED OVER BY THE COPS ALL THE TIME. NOW WITH ONLY 50,000 MILES ON THE 'NEW ENGINE', I TAKE IT BACK TO THE DEALERSHIP BECAUSE ITS SMOKING WHEN I CRANK IT, DOESN'T ACCELERATE SOMETIMES GOING DOWN THE ROAD WHEN I PRESS THE GAS, THEN STARTS SMOKING, HEADLIGHTS FLICKER, ENGINE LIGHT STAYS ON AND LOW TIRE LIGHT STAYS ON (EVEN AFTER GETTING NEW TIRES & ALIGNMENT). TOOK IT IN YESTERDAY, HYUNDAI IS STATING MY OXYGEN SENSORS, CATALYTIC CONVERTER & GASKETS AND INTAKE MANIFOLD NEED TO BE REPLACED AT $3,177. THE CAR ISN'T EVEN WORTH THAT MUCH. THIS IS NOT THE REASON WHY MY CAR IS USING EXCESSIVE AMOUNTS OF OIL, SMOKING WHEN I CRANK IT AND ACTS LIKE THE ENGINE IS ABOUT TO BLOW UP. THEN THEY COME BACK TO TELL ME IT NEEDS THE ABOVE, PLUS AN ENGINE REPLACEMENT BUT OUT OF 'GOODWILL' THEY WILL ONLY CHARGE ME 20% ($2,000) WITH NO LOANER CAR. ITS GOING ON 3 WEEKS NOW. THE CORPORATE OFFICE IS USELESS AND VERY RUDE. I HAVE A VOICEMAIL STATING 'THIS IS THE HIGHEST CUSTOMER SERVICE DEPARTMENT AND ONCE THE DECISION HAS BE MADE, THOSE DECISIONS ARE FIANL AND ITS UP TO YOU TO DECLINE OR ACCEPT OUR OFFER.' IT'S THE ENGINE, AGAIN! WHICH THEN LEAD TO OTHER ISSUES! I WILL NEVER BUY ANOTHER HYUNDAI AGAIN!! THIS CAR HAS CAUSED NOTHING BUT MONEY AND TIME, COMPLETE WASTE OF JUNK!

MY CAR STALL WHILJNG DRIVING THEN STOP IN FRONT OF ANOTHER VEHICLES. I HAD TO PUSH IT OVER ON NEUTRAL. MY VEHICLES HAD KNOCKING SOUND WHEN TRYING TO GET IT BACK UP RUNNING . LET IT SIT FOR A WHILE AND IT START BACK UP ON ITS OWN. I TOOK IT TO HYNDUAI 8/8 THE SERVICE WORKER JIM SAID HE CAN'T DIAGNOSTIC CAUSE THE LIGHT IS GONE. I TOLD HIM THAT I CANT RISK DRIVING THIS VEHICLE WHEN I KNOW IT HAD A KNOCK SENSOR RECALL LAST YEAR CAMPAIGN 953 AND ITS DOING IT AGAIN. HE TOLD ME THEIR IS NOTH I NG HE CAN DO AND ADVICE ME TO DRIVE IT BACK HOME UNTIL IT HAPPENS AGAIN AND THEN GET TOW. J SCOLD HIM AND SAID AND RISK MY KIDS LIFE AND OTHERS. IT STALLS IN THE MIDDLE OF DRIVING. THE ENGINE COMPLETELY GOES OUT FOR ALMOST 40 MINUTE. THIS THE 6TH TIME IT HAPPEN BETWEEN OCT 2019 TO AUG 2020.

WHILE DRIVING THIS VEHICLE AT SLOW SPEEDS IN A PARKING LOT, THE ENGINE WENT TO FULL THROTTLE WITHOUT TOUCHING THE GAS PETAL AT ALL. THE VEHICLE WAS PUT INTO NEUTRAL AND THE ENGINE KEPT REEVING AT FULL SPEED. THERE WAS NEARLY A CRASH AS A RESULT OF THIS FAILURE. THE VEHICLE HAD TO BE TOWED TO THE DEALER SINCE THE ENGINE WOULD NOT STOP OPERATING AT FULL SPEED. IT IS NOW AT THE HYUNDAI DEALER FOR REPAIR AGAIN. THIS IS THE SECOND OCCURRENCE OF THIS ISSUE. THE SAME ISSUE OCCURRED 1 YEAR PRIOR AND A HYUNDAI SERVICE CENTER REPAIRED THE PROBLEM. THERE ARE MANY OF THESE ISSUES REPORTED ON-LINE. THE MANUFACTURER HAS APPARENTLY TAKEN NO RESPONSIBILITY. THIS VEHICLE IS NOT SAFE TO DRIVE . PLEASE HELP US WITH RESOLVING THIS ISSUE WITH THE MANUFACTURE BEFORE SOMEONE GET HURT.

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA HYBRID. WHILE DRIVING 65 MPH, THE CRUISE CONTROL FAILED TO ENGAGE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO CENTENNIAL HYUNDAI (LOCATED AT 6200 CENTENNIAL CENTER BLVD, LAS VEGAS, NV 89149, (702) 483-2200) WHERE IT WAS DIAGNOSED THAT THE CLOCKSPRING NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 96,000. THE VIN WAS UNKNOWN.

CAR RANDOMLY WOULD NOT ACCELERATE AND CAR CAME TO A STOP AND JUST WOULD NOT CUT BACK ON. THERE IS A ENGINE RECALL ON MY CAR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. WHILE DRIVING APPROXIMATELY 65 MPH WITH THE CRUISE CONTROL ACTIVATED, THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO DEACTIVATE THE CRUISE CONTROL AND FAILED TO IMMEDIATELY STOP THE VEHICLE. THE CONTACT MANAGED TO CONTROL THE VEHICLE UNTIL IT STOPPED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TOWED TO ED VOYLES HYUNDAI (2135 COBB PKWY SE, SMYRNA, GA 30080, 770-952-8881), BUT THE FAILURE COULD NOT BE DUPLICATED OR DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 45,000. *TT UPDATED 10/2/18*JB

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. ON SEVERAL OCCASIONS, WHILE DRIVING 70 MPH, THE CRUISE CONTROL ENGAGED INDEPENDENTLY AND THE SPEED INCREASED TO 80 MPH. THE CONTACT WAS FORCED TO APPLY THE BRAKE PEDAL TWICE BEFORE THE CRUISE CONTROL DISENGAGED TO APPROXIMATELY 75 MPH. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED.THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 116,350.

KNOCKING IN THE ENGINE,CRUISE CONTROL DOESN'T GO OFF WHEN BRAKE IS PRESSED,SHIFT LOCK DOESN'T WORK.HAVE TO MANUALLY PRESS OVERRIDE BUTTON TO PUT IN GEAR.CAR STALLS SOMETIMES AFTER A TURN. ECS LIGHT IS CONSTANTLY ON. LOSS OF POWER SOMETIMES,HAD TO REPLACE BRAKE LIGHT BULB TWICE IN THE LAST 6 MONTHS AND THEY WERE COMPLETELY BLACK,LIKE BURNT.VEHICLE WAS GENERALLY IN MOTION WHEN ISSUES OCCURRED.

AFTER A COMPLETE STOP, THE VEHICLE WILL DELAY ITS ACCELERATION, AS IF IT WAS GOING TO TURN OFF, THE AFTER 3-4 SECONDS IT ACCELERATES, IT HAPPENS SEVERAL TIME A DAY WHILE DRIVING.

CRUISE CONTROL FAILS TO DISENGAGE BY REPEATEDLY AND FIRMLY DEPRESSING THE CANCEL SWITCH ON THE STEERING WHEEL. CRUISE CONTROL MUST BE DISENGAGED BY MANUALLY DEPRESSING THE BRAKE PEDAL. UPON HARSHLY HITTING THE WHEEL IN THE GENERAL PROXIMITY OF THE SWITCH IT WILL SOMETIMES BEGIN TO WORK AGAIN RANDOMLY, OTHER TIMES IT WILL NOT FUNCTION AT ALL.

DEFECTIVE BRAKE SWITCH STUCK IN ON POSITION CAUSED THE CAR SLOW DOWN OF ITS OWN ACCORD IN TRAFFIC. CAR DROVE AS IF YOU HAD FOOT ON BRAKE AND ACCELERATOR SIMULTANEOUSLY. BRAKE LIGHTS STAYED ON AFTER TAKING FOOT OFF BRAKE PEDAL.

CRUSE CONTROLS DOES NOT ENGAGE AND/OR DOES NOT DISENGAGE.

ALL OF A SUDDEN MY CAR IS HAVING AN A PROBLEM WITH ACCELERATING. I WAS DRIVING 40-45MPH AND THE CAR DECILARRATED DOWN TO 30MPH THEN TO 20MPH I STEPPED ON THE GAS PEDAL ALL THE WAY DOWN AND THE CAR SLOWED TO ALMOST A STOP, AND THEN WITH MY FOOT STILL FULLY DOWN ON THE GAS PEDAL THE RPM SHOT TO THE NUMBER 4 AND THE CAR TOOK OFF FROM UNDERNEATH ME IF I HADN'T GOTTEN CONTROL I WOULD HAVE GOTTEN INTO AN ACCIDENT THANK GOD NO ONE WAS IN FRONT OF ME. MIND YOU I HAD JUST LEFT HYNDAI MECHANICS FOR THE 2ND TIME THIS WEEK WITH THE REPORTED PROBLEM AND THEY STILL SAY THEY CAN'T FIND NOTHING WRONG. IT HAPPENED RANDOMLY, BUT IN THE PAST WEEK IN A HALF MORE OFTEN THEN I'D LIKE TO COUNT. IT'S A VERY DANGEROUS SITUATION ESPECIALLY WHEN YOU HAVE A CHILD IN THE CAR AND IT'S FUSTERATING WHEN HYUNDAI TELLS YOU IF IT CONTINUES TO HAPPEN BRING IT BACK, FOR WHAT FOR THEM TO TELL ME THE SAME THING THEY TOLD ME TWICE BEFORE , THE FIRST I WAS TURNING AT A LIGHT THE SECOND ON A HIGHWAY THE 3RD DOWN A RURAL ONE WAY ROAD AND ANOTHER WHILE MAKING A U TURN

CRUISE CONTROL WILL NOT CANCEL WITH CANCEL BUTTON. WILL HAPPEN ANYTIME I'M DRIVING ON HIGHWAY AND SET THE CRUISE CONTROL.

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. WHILE DRIVING 25 MPH AND MAKING A LEFT TURN, THE RPMS INCREASED INDEPENDENTLY AND THE VEHICLE LUNGED FORWARD WITHOUT WARNING. IN ADDITION, ONCE THE VEHICLE WAS PLACED IN PARK, THE RPMS CONTINUED TO INCREASE AND THEN DECREASED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000.

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. WHILE DRIVING 5 MPH, THE VEHICLE ACCELERATED RAPIDLY ON ITS OWN, WHICH ALMOST CAUSED A CRASH. THE VEHICLE WAS TAKEN TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS 93,000.

DURING MY LAST SCHEDULED VEHICLE MAINTENANCE IN APRIL 2016, I EXPLICITLY COMMUNICATED MY CONCERNS TO THE HYUNDAI DEALER ABOUT MY ENGINE AND THE FACT THAT THE OIL LIGHT KEPT COMING ON WHEN I TRIED TO ACCELERATE AND WOULD GO OFF AS SOON AS I TOOK MY FEET OFF THE ACCELERATOR. I JUST FOUND OUT THROUGH LOCAL NEWS AND INFORMATION FROM ONLINE BLOGS THAT THIS WAS A SIGN OF ENGINE MANUFACTURING PROBLEMS ORIGINATING FROM HYUNDAI'S ALABAMA ENGINE MANUFACTURING PLANT. THE DEALER DID NOT INFORM ME THAT THE ENGINE IN MY VEHICLE WAS BEING RECALLED. INSTEAD, I WAS TOLD VIA THE MAINTENANCE REPORT THAT OIL LEVEL WAS LOW AND THERE WERE NO VISIBLE LEAKS. I HAVE RECEIPTS TO PROVE THAT I ADHERED TO ALL RECOMMENDED OWNER MAINTENANCE SERVICES AND HAVE BEEN DILIGENT ENOUGH TO SERVICE MY VEHICLE ACCORDING TO THE SERVICE SCHEDULE PRESCRIBED DURING VEHICLE PURCHASE. I HAVE STRONG REASONS TO BELIEVE HYUNDAI HAS NOT BEEN HONEST WITH ITS CUSTOMER. THIS BEING BECAUSE, RATHER THAN ELABORATE ON THE CAUSE AND SOLUTION TO THE PROBLEM (I.E. HYUNDAI SONATA 2011-2012 ENGINE RECALL), INFORMATION WAS DELIBERATELY WITHHELD FROM ME BY HYUNDAI. I NEVER RECEIVED A RECALL NOTICE FROM THE DEALER DESPITE PURCHASING THE VEHICLE FROM AN AUTHORIZED HYUNDAI PRE-OWNED VEHICLE DEALER. I'M EVEN MORE FRUSTRATED BECAUSE THIS RECALL WAS ANNOUNCED IN SEPTEMBER 2015, 4 MONTHS AFTER I PURCHASED MY VEHICLE UNDER WARRANTY AND PAID EXTRA TO HAVE EXTENDED WARRANTY COVERAGE ADDED ON MY VEHICLE. IT'S NOW 7 MONTHS AFTER THE RECALL ANNOUNCEMENT AND I STILL HAVE NOT RECEIVED NOTICE OF THE RECALL FROM HYUNDAI. AS OF TODAY, 3 WEEKS AFTER MY VEHICLE STALLED ON THE ON-401 HIGHWAY WHILST DRIVING AT APPROX. 100KM/HR., I HAVE NOT HEARD BACK FROM HYUNDAI. I HAD TO COAST MY VEHICLE TO THE OUTSIDE SHOULDER OF THE BUSIEST HIGHWAY IN NORTH AMERICA AT 9:00PM. 3 WEEKS ON, I HAVE NO VEHICLE, NO REPAIR TIMELINE AND NO RESPONSE FROM HYUNDAI

TL* THE CONTACT OWNED A 2011 HYUNDAI SONATA. WHILE PULLING INTO A PARKING SPACE AT APPROXIMATELY 5 MPH, THE VEHICLE ACCELERATED AND CRASHED INTO A BUILDING. THE FAILURE OCCURRED WITHOUT WARNING. THE AIR BAGS DEPLOYED. THE POLICE WAS CALLED TO THE SCENE AND A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED INJURIES THAT REQUIRED MEDICAL ATTENTION. THE VEHICLE WAS TOWED TOTALED BY THE INSURANCE COMPANY. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 85,000. UPDATED 09/27/16*LJ *TR

CRUISE CONTROL WONT ENGAGE. BUTTONS FOR CRUSE CONTROL INTERMENTLY WORK. WHEN AND IF CRUISE CONTROL DOES ENGAGE BUTTONS CANCEL,SET, +/- SPEED MAY OR MAY NOT OPERATE. SETTING CRUISE CONTROL AND INCREASING OR DECREASING ACCELERATOR SPEED MAY OR MAY NOT ENGAGE. MAY HAVE NO CONTROL IF UNINTENDED ACCELERATION HAPENS. NO CONTROL OF SPEED AND SETTINGS. NUMEROUS SONATA OWNWERS ARE HAVING THIS PROBLEM. GOOGLE PROBLEM AND ITS WELL KNOW. WHAT IS HYUNDAI DOING TO PREVENT OR FIX THE PROBLEM IF AND WHEN UNINTENDED ACCLERATION OCCURS. OR IS HYUNDAI GOING TO WAIT UNTILL SOMEONE MENTIONS CLASS ACTION LAWSUIT LIKE IN THE REPLACEMENT OF SONATA ENGINES.....

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 65 MPH, THE VEHICLE DECELERATED INDEPENDENTLY AND THE RPMS INCREASED. IN ADDITION, THE VEHICLE HESITATED WITHOUT WARNING AND THE CONTACT HEARD AN ABNORMAL NOISE COMING FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FAILURE WAS UNDETERMINED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT RECEIVED A NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V568000 (ENGINE) HOWEVER, THE PART TO DO REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 59,000. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. UPDATED 04/20/16*LJ UPDATED 05/11/18*JB *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE SUDDENLY BEGAN TO SPUTTER AND STALLED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE THROTTLE BODY WAS FAULTY. THE THROTTLE BODY WAS REPAIRED ,BUT THE FAILURE CONTINUED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 95,000.

TL* THE CONTACT OWNED A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 TO 35 MPH AND WHEN THE ACCELERATOR PEDAL WAS APPLIED, THE VEHICLE VEERED TO THE LEFT AND ACCELERATED. AS A RESULT, THE VEHICLE ACCELERATED VIOLENTLY AND THE CONTACT CRASHED INTO A TREE. A POLICE REPORT WAS FILED. THE VEHICLE WAS DESTROYED. THE APPROXIMATE FAILURE MILEAGE WAS 54,000.

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT THE BRAKE WARNING LIGHT AND THE ESC WARNING LIGHT RANDOMLY ILLUMINATED. THE CONTACT STATED THAT THE VEHICLE CONSTANTLY HESITATED. WHILE DRIVING 45 MPH, THERE WAS A DRASTIC REDUCTION IN SPEED. THE VEHICLE WAS TOWED TO THE DEALER TWICE, BUT THE FAILURE COULD NOT BE DUPLICATED. THE CONTACT STATED THAT THE CONDITION PROGRESSED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE STOP LAMP BRAKE SWITCH NEEDED TO BE REPLACED. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBERS: 13V113000 (EXTERIOR LIGHTING, SERVICE BRAKES, HYDRAULIC) AND 14V433000 (SERVICE BRAKES, HYDRAULIC). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED NO REMEDY. THE APPROXIMATE FAILURE MILEAGE WAS 50,800.

I AM HAVING PROBLEMS WITH MY CAR NOT WANTING TO ACCELERATE SOMETIMES, I TYPICALLY NOTICE THIS WHEN I AM ON THE FREEWAY GOING ABOUT 60 MPH AND WHEN I TRY TO GO PAST THAT IT WILL SEEM TO NOT WANT TO ACCELERATE AND THEN JERK AND THEN GO ACCELERATE FASTER. LATELY I HAVE ALSO NOTICE THIS WHEN GOING NORMAL SPEEDS IT SEEMS LIKE IT WANTS TO STALL. *TR

ON OCTOBER 3, 2014, I HAD MY CAR SERVICED FOR TWO SONATA RECALLS, ONE REGARDING THE SHIFT CABLE AND THE OTHER REGARDING THE BRAKES. THAT SAME AFTERNOON, MY STABILITY CONTROL LIGHT ILLUMINATED ON MY DASH. I HAVE HAD THIS CAR FOR 4 YEARS AND COULD NOT REMEMBER IT DOING THAT EVER BEFORE. PRESSING THE STABILITY CONTROL BUTTON DID NOTHING TO CHANGE THE LIGHT (IT WOULD NOT TURN OFF). THE NEXT DAY, WHILE PRESSING THE GAS PEDAL, I NOTICED A FAILURE TO ACCELERATE. THIS HAS HAPPENED DOZENS OF TIMES SINCE, AT VARYING SPEEDS, AND WHILE THE CAR WAS BOTH COLD AND WARM. IT ALWAYS LASTS SEVERAL SECONDS AND THEN I CAN ACCELERATE AGAIN. DURING ONE OF THESE EPISODES, I CAN PRESS THE GAS PEDAL ALL THE WAY TO THE FLOORBOARD AND GET NO ACCELERATION. THIS IS BECOMING INCREASINGLY DANGEROUS. I'VE BEEN IN TO THE DEALERSHIP, AND THEY DENIED ANY CONNECTION TO THE RECALL WORK, DESPITE THIS PROBLEM PRESENTING IMMEDIATELY UPON LEAVING. THEY SAID THEY REPLACED THE BRAKE SWITCH AND THAT THEY SHOULD HAVE CHARGED ME FOR THAT, BUT THEY DID NOT. I GOT NO PAPERWORK SHOWING THAT THEY ACTUALLY REPLACED THE BRAKE SWITCH. AFTER THAT VISIT, THE TRACTION LIGHT WAS OFF FOR A DAY BEFORE THIS PROBLEM REOCCURRED. I AM TERRIFIED DRIVING THIS CAR TO AND FROM WORK BECAUSE I NEVER KNOW WHEN THE ACCELERATION WILL FAIL. IT HAS HAPPENED WHILE CHANGING LANES IN HEAVY TRAFFIC, AND ALSO ON THE RAMPS IN MY OFFICE PARKING GARAGE. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE REVERSING, THE VEHICLE MOVED FORWARD AND CRASHED INTO A POLE. THERE WERE NO INJURIES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 53,000. UPDATED 10/02/14*LJ THE CONSUMER STATED THE FAILURE OCCURRED 3 TIMES BEFORE THE ACCIDENT. UPDATED 3/5/2015 *JS

ON THURSDAY, FEB 6, 2014 APPROXIMATELY AT 2PM ON A BUSY STREET. I WAS APPROACHING A STOPLIGHT AND AS I WAS APPROACHING STOP LIGHT AND ATTEMPTED TO PUT ON BRAKES TO STOP. INSTEAD OF STOPPING THE CAR THE CAR SPED UP AND DIDN'T STOP UNTIL I SMASHED INTO HIM. CAR DID NOT STOP UNTIL COLLISION OCCURRED UPON IMPACT. I HAD NO BRAKES!!!!! I SMASHED HIS REAR BUMPER AND CRACKED HIS LICENSE PLATE WINDOW. ON SATURDAY, FEB 8TH 2014 I TOOK CAR INTO HYUNDAI DEALER THEY INSISTED NOTHING WAS WRONG WITH VEHICLE. I WAS ASKED IF BY HYUNDAI DEALER IF STREET WAS ICY AND THE STREETS WERE COMPLETELY DRY. I CALLED INSURANCE REPORTED INCIDENT, AND WITH THIS COLLISION THERE WAS 1300.00 DAMAGE TO HIS VEHICLE. LUCKILY THERE WAS NO INJURY THIS TIME. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 55 MPH THE ACTIVE AIR FLAP WARNING LIGHT ILLUMINATED. THE CONTACT MENTIONED THAT THE ENGINE RPMS INCREASED EXCESSIVELY AND THE VEHICLE WOULD SUDDENLY ACCELERATED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE ACTIVE AIR FLAP SENSOR NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 70,000.

I BOUGHT MY CAR IN SEPTEMBER 2013, IT IS CERTIFIED PRE-OWNED AND CAME WITH THE ORIGINAL 100,000 MILE/10 YEAR WARRANTY, I PURCHASED THE EXTRA ELECTRICAL WARRANTY. I WAS DRIVING AT ABOUT 40 MPH AND I NOTICED MY TRANSMISSION WASN'T SWITCHING GEARS WHEN I WAS ACCELERATING AND IF I TOOK MY FOOT OF OFF THE BRAKE THE CAR WANTED TO STOP, MY BRAKES WERE LOCKING UP. THERE WAS SMOKE COMING FROM THE FRONT DRIVERS SIDE TIRE AND FROM THE BACK PASSENGER SIDE TIRE AND A LOUD NOISE. I PULLED OVER, SHUT OFF THE CAR AND WAITED ABOUT 10-15 MINUTES UNTIL THE SMOKING STOPPED AND I TURNED THE CAR ON AND BEGAN TO DRIVE HOME. I WAS ONLY ABOUT 3 MINUTES FROM MY HOME AT THAT TIME. THE TRANSMISSION WAS CONTINUING TO DEMONSTRATE PROBLEMS AND THE BRAKES TO MAKE A LOW RUMBLING NOISE. I CALLED HYUNDAI ROADSIDE ASSISTANCE RIGHT AWAY TO TAKE MY CAR TO THE DEALERSHIP TO BE EVALUATED AND FIXED. I CALLED AT 3PM AND THEY DID NOT PICK UP MY CAR UNTIL 9:30 PM. THE NEXT DAY THEY CALLED ME AND TOLD ME MY CAR WAS DRIVING FINE AND THEY WERE GOING TO CHECK SEVERAL OTHER COMPONENTS OF THE CAR TO CONFIRM EVERYTHING WAS IN WORKING ORDER. A FEW HOURS LATER I CALLED TO GET A STATUS UPDATE ON MY VEHICLE AND I WAS TOLD THAT THEY DISCOVERED SOMETHING WRONG, THEY HAD CONDUCTED A TEST DRIVE FOR THE SECOND TIME AND DISCOVERED ALL OF THE PROBLEMS I WAS INITIALLY REPORTING ABOUT THE CAR. THE SERVICE MANAGER THEN TOLD ME HE WAS NOT SURE OF THE CAUSE AND THAT HE WOULD HAVE TO CHECK SEVERAL OTHER THINGS AND I WOULD NEED A RENTAL CAR BECAUSE HE DID NOT KNOW HOW LONG THE REPAIR WOULD TAKE. I GOT THE RENTAL CAR AT ABOUT 2 IN THE AFTERNOON AND WAS CALLED AT 5:30 AND TOLD ME CAR WAS READY FOR PICK-UP AND THAT THEY REPLACED THE BRAKE LIGHT SWITCH. I WENT THE NEXT MORNING TO PICK UP MY CAR AND DROP OFF MY RENTAL AT ABOUT 10AM. I DROVE THE CAR HOME AND EVERYTHING SEEMED TO BE FINE, BUT AT ABOUT 3PM HAD THE SAME PROBLEM AGAIN. *TR

I HAD BEGUN TO ACCELERATE FROM A RED LIGHT. THE CAR IN FRONT BEGAN TO STOP AGAIN. WHEN I PRESSED ON THE BRAKE PEDAL, IT WOULD NOT GO DOWN, WAS NOT STOPPING THE CAR AT ALL. THE CAR CONTINUED TO ACCELERATE ON ITS OWN AND I HIT A VAN. THE AIRBAG WENT OFF, BUT THE ENGINE REVVED UP, AND THE CAR SHOT FORWARD AGAIN, HITTING THE OTHER VEHICLE AGAIN. I TRIED PUTTING THE CAR IN NEUTRAL AND PARK. NOTHING STOPPED IT UNTIL I TURNED THE VEHICLE OFF COMPLETELY. I HAVE THE 'NORM' SEATBELT BRUISING, SMASHED MY KNEE ON THE DASH, AND HAVE WHIPLASH AS WELL. *TR

THE AUTO ON SEVERAL, SPORADIC OCCASIONS HAD AN ACCELERATION PROBLEM, WHILE SITTING STILL IN TRAFFIC. WHILE SITTING STILL IN TRAFFIC, THE RPMS WOULD START TO INCREASE, GOING TO 6000 RPMS BEFORE I GEARED IT BACK DOWN AND SHUT THE ENGINE OFF. I TOOK IT TOO THE DEALER ON SEVERAL OCCASIONS, THEY KEPT IT COUPLE OF DAYS EACH TIME, THEY TOLD ME, THEY COULD FIND NOTHING WRONG, AND GO AHEAD AND DRIVE IT, IF IT HAPPENED AGAIN, BRING IT BACK, SENDING ME AWAY IN A UNSAFE VEHICLE. THE LAST TIME, DATE MENTIONED ABOVE, A SERVICE TECHNICIAN TEST DROVE MY CAR, THE ACCELERATION PROBLEM OCCURRED, AND HE TOTALED OUT MY VEHICLE. I WAS NOT NOTIFIED UNTIL 2 DAYS LATER THAT MY VEHICLE HAD BEEN IN A ACCIDENT. I WAS TOLD, IT HAPPENED THE NIGHT BEFORE, I WAS NOTIFIED ON SEPT 13, 2013, THAT WOULD HAVE THE ACCIDENT OCCURRING ON SEPT.12,2013, WHEN IN FACT IT OCCURRED ON SEPT. 11, 2013. I HAVE SEARCHED AND FOUND ON SEVERAL OCCASIONS THAT THIS VEHICLE, DID INDEED, HAVE ACCELERATION PROBLEMS, WHICH THE DEALER HAD INFORMED ME, HAD NEVER HAPPENED BEFORE. THE VEHICLE, SHOULD HAVE BEEN DIAGNOSED AND THE PROBLEM FIXED, THE FIRST TIME, INSTEAD OF THE DEALERSHIP, SENDING ME AWAY EACH TIME IN A UNSAFE VEHICLE. VERY UNETHICAL OF THE DEALER, FOR TELLING LIES ABOUT THE CAR,AND, THE CORRECT DATE THE INCIDENT OCCURRED, NOT NOTIFYING ME FOR 2 DAYS, THAT IT OCCURRED, AND.NOT FIXING THE PROBLEM, AS SHOULD HAVE BEEN EXPECTED OF THEM, THE FIRST TIME IT OCCURRED, AND SENDING ME AWAY EACH TIME IN A UNSAFE VEHICLE. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE SITTING AT A TRAFFIC LIGHT, THERE WAS AN ABNORMAL INCREASE IN ENGINE RPMS. THE CONTACT MENTIONED THAT HE FELT AS IF THE VEHICLE WANTED TO LUNGE FORWARD EVERY TIME THE FAILURE OCCURRED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE VEHICLE WAS TEST DRIVEN BY A TECHNICIAN. THE FAILURE RECURRED WHILE BEING TEST DRIVEN AND THE VEHICLE INDEPENDENTLY ACCELERATED UP AN EMBANKMENT, CRASHED INTO A TREE AND THEN ROLLED OVER. THE TECHNICIAN SUSTAINED MINOR INJURIES AND THE VEHICLE WAS DESTROYED. A POLICE REPORT WAS FILED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 36,000 AND THE CURRENT MILEAGE WAS 44,500.

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED WHILE THE VEHICLE WAS PARKED WITH THE ENGINE RUNNING THE VEHICLE ROLLED AWAY ON ITS OWN AND CRASHED THROUGH THE GARAGE WALL INTO THE KITCHEN OF HIS HOME. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 14,000. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT ATTEMPTED TO DECELERATE BUT THE VEHICLE SUDDENLY ACCELERATED. THE CONTACT HAD TO QUICKLY SHIFT INTO PARK IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE THE FAILURE COULD NOT BE REPLICATED. THE FAILURE AND CURRENT MILEAGES WERE 20,000. THE VIN WAS NOT AVAILABLE. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA HYBRID. WHILE DRIVING IN REVERSE APPROXIMATELY 5 MPH, THE BRAKE PEDAL WAS ENGAGED AND THE VEHICLE BEGAN TO ACCELERATE RAPIDLY. THE CONTACT CRASHED INTO A TREE. THE VEHICLE WAS COMPLETELY DESTROYED AND TOWED TO A COLLISION CENTER. THERE WERE NO INJURIES REPORTED. A POLICE REPORT WAS NOT FILED OF THE INCIDENT. THE MANUFACTURER WAS NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 23,594.

I WAS DRIVING INTO A PARKING SPACE IN A PARKING LOT AND CAME TO A STOP WHEN THE CAR SUDDENLY ACCELERATED, JUMPED A CURB WHICH WAS FIVE INCHES HIGH AND FIVE INCHES WIDE, SMASHED INTO A FENCE AND CAME TO REST ON A SCATTERED PILE OF BRICKS. I HURT MY KNEE WHICH HIT THE DASHBOARD. THIS INJURY DID NOT REQUIRE HOSPITALIZATION ALTHOUGH I WAS IN A STATE OF SHOCK.THERE WAS CONSIDERABLE DAMAGE TO THE CAR WHICH IS NOW IN THE BODY SHOP. IT WILL TAKE THREE WEEKS AT LEAST TO REPAIR THE CAR. IN THE MEANTIME I AM DRIVING A RENTAL CAR. I BELIEVE THIS COULD BE A CASE OF UNINTENDED SUDDEN ACCELERATION CAUSED BY AN ELECTRONIC MALFUNCTION. I THINK THIS ACCIDENT NEEDS TO BE INVESTIGATED THOROUGHLY. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA HYBRID. THE CONTACT WAS DRIVING 8 MPH WHEN THE ACCELERATOR PEDAL WAS DEPRESSED AND THERE WAS A NOTICEABLE DELAY BEFORE THE VEHICLE WOULD RESPOND. THE FAILURE RECURRED TWICE.THE VEHICLE WAS TAKEN TO THE DEALER AND THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 16,000 AND THE CURRENT MILEAGE WAS 20,000.

THIS IS WHAT I WROTE TO HYUNDAI: RENTED A SONATA. LOVED THE CAR EXCEPT: SAFETY ISSUE. WHILE USING THE CRUISE CONTROL THE CAR LEAPED AHEAD SEVERAL TIMES AFTER I HAD APPLIED THE BRAKE (BECAUSE I WAS GETTING TOO CLOSE TO THE CAR IN FRONT OF ME) AND WAS TEMPORARILY HANDLING SPEED WITHOUT THE CRUISE CONTROL. NEARLY HAD AN ACCIDENT ON TWQ SUCH OCCASIONS. THEN I FIGURED OUT WHAT WAS HAPPENING. THE "RESUME" BUTTON IS SO CLOSE TO THE RIM OF THE WHEEL, AND SO EXPOSED, THAT THE HEEL OF MY RIGHT HAND WAS TOUCHING IT INADVERTANTLY AND THE CRUISE CONTROL REENGAGED WHEN I DIDN'T WANT IT TO AND DIDN'T KNOW IT WAS HAPPENING. IMHO, YOUR BUTTON NEEDS TO BE RELOCATED OR PROTECTED BY A RIDGE. IMHO, THIS IS A MAJOR SAFETY ISSUE THAT NEEDS TO BE ADDRESSED NOW. PLEASE LET ME KNOW IF YOU AGREE. IF NOT, I WILL CONTACT THE NTSB. THANK YOU. HYUNDAI DID NOT AGREE THAT IT NEEDED IMMEDIATE ATTENTION, SO I AM WRITING TO YOU. I NOTICED ON YOUR SITE THAT THERE WERE TWO PREVIOUS COMPLAINTS REGARDING THE SONATA'S SPEED CONTROL, ONE OF THEM SIMILAR IN SYMPTOM, ALTHOUGH THE COMPLAINANT DID NOT RECOGNIZE THE CAUSE. PLEASE NOTE, THIS WAS A RENTAL, NOT A PURCHASE, BUT TO GET THROUGH YOUR FORM I HAVE TO SAY, LATER, THAT IT WAS A PURCHASE. I ALSO INVENTED THE MILEAGE, AS I DO NOT RECALL THE MILEAGE ON THE RENTAL CAR. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) *TT

WHILE DRIVING AT 55 MPH ON THE HIGHWAY, THE CAR SELF ENGAGED AND SET THE CRUISE CONTROL WITH NO DRIVER INPUT. THE CAR STARTED TO ACCELERATE TO A HIGHER SPEED, BUT STOPPED ACCELERATING WHEN THE BRAKE PEDAL WAS PRESSED. THE CRUISE CONTROL WAS OFF AT THE TIME OF THE INCIDENT. THE CAR IS LESS THAN 2 MONTHS OLD AND HAS ALREADY BEEN IN THE SHOP FOR OTHER CRUISE CONTROL RELATED PROBLEMS. THIS CAR IS THE NEW SONATA HYBRID AND HAS HAD MULTIPLE OTHER PROBLEMS REQUIRING NUMEROUS VISITS TO THE SERVICE DEPARTMENT.

SONATA 2011 HORN AND ACCELERATION PROBLEMS. PEOPLE CAN NOT HEAR THE HORN. ALSO WHEN I TEST DROVE THEY SONATA THE TEST CAR HAD PROBLEMS WHERE THERE WAS ACCELERATOR PROBLEMS. WHEN I STEPPED ON THE GAS THE CAR ALMOST QUIT, PAUSED AND THEY TOOK OFF. THIS IS DANGEROUS AND COULD CAUSE AN ACCIDENT BY NOT ACCELERATING IN TIME. THIS HAS HAPPENED ON MY CAR AT LEAST 7 TIMES, ACCELERATE, PAUSE OR HESITATION THE MOTOR KICKS IN. WHEN I ASKED THE SALESMAN ABOUT IT AT THE DEALER HE TOLD ME THE MOTOR ON THE TEST CAR WAS PROBABLY COLD. THIS HAPPENS WHEN THE CAR IS WARMED UP. THIS IS VERY SCARY WHEN YOU PULL OUT IN TRAFFIC. ALSO THE HORN IS A JOKE. YOU CAN'T HEAR THE HORN AND IT NEEDS TO BE REPLACED. *TR