2011 HYUNDAI SONATA Engine And Engine Cooling Problems

The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the engine started to overheat, with the check engine and temperature warning lights illuminated. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 184,000.

The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light was illuminated. The contact stated that on a separate occasion, while driving 35 MPH, there was smoke coming from underneath the hood. The contact pulled over to the side of the road and turned off the vehicle. The contact opened the hood, and there was smoke coming from the valve cover and coolant reservoir. The contact waited for the engine to cool down and the vehicle was able to restart. The contact stated that on a separate occasion, after turning off the vehicle after arriving at work, there was an abnormal bubbling sound coming from underneath the hood. The contact opened the hood and there were bubbles coming from the radiator. Prior...

The contact owns a 2011 Hyundai Sonata. The contact stated that while driving approximately 35-40 MPH, the vehicle lost motive power and stalled. The vehicle was towed to a certified mechanic who diagnosed that cylinder #4 had failed causing the engine to seize. The engine was replaced with a used engine. The engine was replaced at approximately 109,000 miles. The contact stated that while driving for approximately 45 minutes, the contact noticed that the vehicle would not exceed 60 MPH. The check engine warning light started flashing. The contact continued to drive the vehicle to a rest stop. After being parked for a while and then restarting the vehicle, several unknown warning lights illuminated. The vehicle then failed to exceed 45 MPH. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the engine had seized due to a lack of engine oil. The contact...

The contact owns a 2011 Hyundai Sonata. The contact stated while driving approximately 35 MPH, the vehicle inadvertently lost motive power and stalled. The contact stated there was a piston failure in the engine allowing oil to leak onto the ground. There were no warning lights illuminated. The vehicle was towed to the local dealer but was not diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was not included in NHTSA Campaign Number: 17V226000 (Engine and Engine Cooling). The approximate failure mileage was 150,000. The VIN was invalid.

We have refill engine oil weekly. After every oil change a month the oil is dark and a needs a quart more to refill. This is regularly since 2015. We purchased the car in 2012. 2019 the front ball joints started clumping in reverse, replaced in 2021. While driving on the freeway and exiting off onto a ramp the car dramatically down shifted and was unable to correct itself. Later discovered the computer module needed replacement. We still are refilling oil weekly. Not to mention replacing the clock spring twice.

2011 HYUNDAI SONATA. CONSUMER WRITES IN REGARDS TO NHTSA SAFETY RECALL 15V-568. THE CONSUMER REQUESTED TO BE INCLUDED IN THE RECALL, AS THE VEHICLE HAS EXPERIENCED THE SAME FAILURE. THERE WAS METALLIC DEBRIS IN THE ENGINE CRANKSHAFT. THIS CAUSED THE ROD BEARINGS TO BE RESTRICTED OF OIL FLOW AND CAUSED MY ROD BEARINGS TO BE DAMAGED. THE ENGINE FAILED.

2011 HYUNDAI SONATA. CONSUMER WRITES IN REGARDS TO MUFFLER NOISES, FUSE OUTLET REPLACEMENT, LOOSE WINDOW HANDLE AND ENGINE REPLACEMENT REPAIR ISSUES. *SMD THE CONSUMER WAS INFORMED THE BAFFLES IN THE MUFFLER WERE COMING APART. ALSO, THE VEHICLE SUDDENLY STALLED WHILE IN THE MIDST OF DRIVING AND IT WOULD NOT RE-START. THE VEHICLE HAD TO BE TOWED TO THE DEALER. THE DEALER STATED THE ENGINE NEEDED TO BE REPLACED. HOWEVER, IT WOULD HAVE TO BE TAKEN APART TO SEE WHAT CAUSED IT TO HAPPEN. THE DEALER INFORMED THE CONSUMER THE CONNECTING RODS WERE BAD AND A RECALL HAD BEEN ISSUE ON THE ENGINE DUE TO CONCERNS OF METAL DEBRIS ENTERING THE ENGINE COMPARTMENT CAUSING THE CONNECTING RODS TO FAIL. THE ENGINE WAS REPLACED. HOWEVER, WHEN THE CONSUMER WENT TO RETRIEVE THE VEHICLE, THE OTHER PROBLEMS WERE NOT FIXED. WHEN THE CONSUMER DROVE OFF THE LOT, THE VEHICLE BEGAN TO SHAKE VIOLENTLY...

THE CAR RANDOMLY STALLED AT TRAFFIC LIGHTS FOR ABOUT TEN TIMES NOW THROUGHOUT MY 3.5 YEARS' OWNERSHIP. I BOUGHT MY CAR IN MARCH 2010. WITHIN ONE MONTH, THE ENGINE STALLED WHEN BRAKING TO A FULL STOP AT TRAFFIC LIGHT. THE DEALER COULDN'T REPRODUCE THE PROBLEM. ONE MONTH LATER, MY CAR CUT OFF AGAIN WHILE SITTING AT TRAFFIC LIGHT. ANOTHER ONE OR TWO MONTHS LATER, IT HAPPENED THE THIRD TIME. THE DEALER KEPT MY TOWED CAR FOR TWO WEEKS BUT HAD NO CLUE. FROM THEN ON, I JUST GAVE UP. ONE DAY, WHEN IT SAT AT TRAFFIC LIGHT, THE CAR SHOOK A LITTLE LIKE SOMEONE HIT ME. THE OTHER DAY, THIS HIT-LIKE SHAKE HAPPENED AGAIN WHILE AT TRAFFIC LIGHT. THIS TIME, THE CAR EVEN SHOOK SEVERAL TIMES DURING DRIVING AFTER LEAVING THAT TRAFFIC LIGHT, WITH THE CHECK ENGINE LIGHT BLINKING IN ACCORDANCE WITH THE SHAKE. ON THE FOLLOWING DAY, MY CAR...

THERE IS A SMELL OF GAS/ENGINE FUMES NOTABLE IN THE VEHICLE ON OCCASION. THE PROBLEM DOES NOT HAPPEN CONSISTENTLY, HOWEVER THERE ARE SOME COMMON FACTORS TO WHEN THE SMELL IN NOTICEABLE. THESE FACTORS INCLUDE: 1) THE ENGINE MUST BE HOT, GENERALLY HAVING BEEN DRIVEN FOR AT LEAST 15 MINUTES OR MORE. THE SMELL IS NEVER NOTICEABLE WHEN THE ENGINE IS COLD, SUCH AS AFTER SITTING OVERNIGHT. 2) THE VEHICLE MUST BE EITHER MOVING AT VERY SLOW SPEEDS OF <25 M.P.H., OR SITTING STILL. EXAMPLES WOULD INCLUDE DRIVING THROUGH PARKING LOTS, SITTING AT AN IDLE FOR A LONG PERIOD AT A STOP LIGHT, WHEN FIRST STARTING THE VEHICLE AFTER SITTING IN A PARKING LOT FOR AWHILE, ETC. 3) WHEN THE GAS / FUME SMELL IS NOTABLE WITH GREATEST INTENSITY, IT SEEMS TO OCCUR AFTER A HOT ENGINE SOAK OF 15~45 MINUTES AT AMBIENT TEMPERATURES OF 30 DEGREES FAHRENHEIT OR ABOVE AND...

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT THE CHECK ENGINE WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TOWED TO THE DEALER FOR DIAGNOSTICS, WHICH LOCATED THE FAILURE AT THE ENGINE. THE ENGINE OIL EXPERIENCED A BLOCK THAT CAUSED THE OIL NOT TO CIRCULATE AND THE ENGINE TO FAIL. THE ENGINE WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE AND THE CURRENT MILEAGE WAS 30,000.

THE 2011 SONATA IS UNABLE TO START BY PRESSING DOWN ON BOTH THE BRAKE PEDAL AND START BUTTON. I HAD THIS PROBLEM FOR OVER 3 MONTHS. THIS FAILURE HAPPENS ABOUT 1-2 TIMES A WEEK. ONCE FAILED TO START, THE BRAKE PEDAL LOCKED UP WHILE THE DASHBOARD DISPLAY STILL SAYS "PRESS DOWN BRAKE PEDAL TO START." WITH REPEATED TRIES TO START THE CAR, IT SOMETIMES STARTED AFTER 5-10 MINUTES, BUT SOMETIMES IT TOOK OVER 1 HOURS TO START THE ENGINE. HYUNDAI DEALERSHIP SAID THEY CANNOT HELP BECAUSE THE PROBLEM CANNOT BE REPRODUCED WHEN THEY SERVICE THE CAR. IT IS A RATHER NEW CAR BUT VERY UNRELIABLE. *TR

AFTER HAVING 3 OF 5 RECALL FIXES PERFORMED, BATTERY CHARGING SYSTEM WARNING LIGHT AND SOUNDS ACTIVATED. CAR LOST POWER AT LOW REVS. REQUIRED GIVING FULL THROTTLE TO ENABLE GAS ENGINE TO KICK IN AND GAIN ENOUGH SPEED TO SAFELY STAY WITH TRAFFIC. AFTER PULLING OVER AND TURNING ENGINE OFF/ON, PROBLEM SEEMED TO RESOLVE ITSELF. HAPPENED AGAIN IN HIGHWAY TRAFFIC WHILE ENTERING EXIT RAMP RESULTING IN A DANGEROUS LOSS OF POWER. RETURNED VEHICLE TO DEALERSHIP FOR REPAIR. DEALERSHIP ASSURED ME THAT THEY KNEW WHAT THE ISSUE WAS AND THAT IT WOULD BE REPAIRED. 2 DAYS LATER ISSUE HAPPENED 3 TIMES. EACH TIME ON THE HIGHWAY AT APPROX. 65MPH WITH NOWHERE SAFE TO CONVENIENTLY PULL OVER.

THIS IS ON THE HYBRID SONATA. TWICE IN 2 WEEKS, I AM DRIVING DOWN A HIGHWAY, I FELT A JERK IN THE CAR, THE READY LIGHT FLASHES AND THE WRENCH SYMBOL SHOWS UP. THE CAR IS ON BATTERY POWER ONLY. I COAST ON BATTERY TILL I CAN PULL INTO A PARKING LOT. SHUT THE CAR OFF. LUCKILY BOTH TIMES IT STARTED BACK UP. BOB KING HYUNDAI IN WINSTON-SALEM SAYS THEY DON'T KNOW WHY IT WOULD DO THAT. WE ARE WAITING ON SOME PARTS THAT ARE UPDATES, BUT DON'T KNOW IF THAT WILL FIX THE SHUT DOWN ISSUE. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THAT AFTER DRIVING THE VEHICLE FOR EXTENDED PERIODS OF TIME, OCCUPANTS WOULD BECOME FATIGUED, LIGHT HEADED, AND EXPERIENCED HEADACHES. THE CONTACT ALSO STATED THAT SHE NEARLY PASSED OUT ON ONE OCCASION. THE CONTACT TOOK THE VEHICLE TO A FIRE DEPARTMENT TO HAVE IT TESTED FOR CARBON MONOXIDE AND THE TEST CAME BACK NEGATIVE. THE FIREMAN THAT TESTED THE VEHICLE ALSO REPORTED THAT HE BECAME LIGHT HEADED AND EXPERIENCED A HEADACHE WHILE DRIVING IT. THE CONTACT SPOKE WITH THE MANUFACTURER AND WAS INFORMED THAT THERE WAS NOTHING THAT COULD BE DONE BECAUSE THE DEALER STATED THAT THERE WERE NO CARBON MONOXIDE LEAKS. THE FAILURE MILEAGE AND CURRENT MILEAGE WAS UNKNOWN. THE VIN WAS UNKNOWN.

WHILE DRIVING ON THE FREEWAY I EXPERIENCED A LARGE JOLT WHICH RESULTED IN AN UNEXPECTED SHIFT IN THE TRANSMISSION GEAR WHERE MY SPEED OF APPROX. 65 MPH AT 2000 RPM DROPPED TO 45 MPH AT APPROX 3800 RPM. HAD THE FREEWAY TRAFFIC NOT BEEN LIGHT AT THE TIME, THIS COULD HAVE CAUSED AN ACCIDENT. ALTHOUGH THE TRANSMISSION INDICATOR SHOWED IT WAS IN "D", THE GEAR WAS PROBABLY CLOSER TO 2ND GEAR. I PULLED OFF THE FREEWAY AND SHIFTED FROM D TO R TO N TO P, HOWEVER IT SEEMED THAT IT WAS LOCKED IN 2ND GEAR. I MANAGED TO DRIVE IT IN THAT GEAR TO THE LOCAL HYUNDAI DEALER. HOWEVER ONCE THE ENGINE WAS SHUTOFF AND RESTARTED, THE TRANSMISSION WAS BACK IN ITS NORMAL GEAR AND THEY WERE NOT ABLE TO DUPLICATE THAT EVENT. IN ADDITION, ACCORDING TO THE SERVICE REPRESENTATIVE, THE COMPUTER SHOWED NO PROBLEMS. AFTER DOING A SEARCH...

ON THE WAY TO WORK THIS MORNING, MY SONATA HYBRID STARTED BEEPING AND "CHECK CHARGING SYSTEM" APPEARED ON THE DASHBOARD. MY CAR SUDDENLY STARTED LOSING ENGINE POWER TO THE POINT WHERE MY CAR WOULD NOT MOVE AFTER THE STOP LIGHT TURNED GREEN, LEAVING ME STUCK IN THE MIDDLE OF A HUGE INTERSECTION WITH PEOPLE ALMOST HITTING ME. AFTER RESTARTING MY CAR, IT FINALLY STARTED TO MOVE, BUT REPEATED THE SAME INSTANCE AT THE NEXT STOP LIGHT. THIS IS A SERIOUS SAFETY ISSUE. I HAD TO HAVE MY CAR TOWED TO THE DEALERSHIP BECAUSE I WAS NOT GOING TO RISK MY SAFETY AND LIFE. PEOPLE NEED TO BE AWARE OF THIS ISSUE BECAUSE IF OTHER VEHICLES ARE EXPERIENCING THE SAME PROBLEM, SOMEONE COULD GET INTO A SERIOUS CAR WRECK WHICH COULD BE POTENTIALLY FATAL, IF HAPPENED ON A FREEWAY. *TR

HYUNDAI SONATA HYBRID. FIRST PROBLEM OCCURRED AT APPROXIMATELY 6400 MILES. I WAS DRIVING BETWEEN 60-65 MPH ON THE FREEWAY. VEHICLE LOST POWER AND ALARM SOUNDED. "CHECK CHARGIN SYSTEM" LIGHT ILLUMINATED AND THE CAR LOST ALL POWER TO DRIVE, GAS ENGINE AND HYBRID ENGINE SHUT-OFF IN MIDDLE OF FREEWAY. WAS ABLE TO MAKE IT OFF FREEWAY. LET CAR COME TO REST AND RESTARTED CAR. EVERYTHING SEEMED NORMAL, DROVE IN PARKING LOT AND WAS CLOSE TO HOME. TAKING TO DEALERSHIP WHO HAS NOT HEARD OF ISSUE. *TR

POWER TO THE ENGINE COMPLETELY CUT OUT WHILE DRIVING. ALL WARNING LIGHTS ILLUMINATED AND A LARGE WARNING MESSAGE APPEARED: CHECK CHARGING SYSTEM. I COASTED TO THE HIGHWAY SHOULDER. THE ELECTRICAL SYSTEM WAS PROVIDING POWER TO THE ACCESSORIES ONLY (RADIO, AIR) BUT IT WAS STUCK IN THIS MODE. WOULD NOT TURN OFF UNTIL I DEPRESSED THE START/STOP BUTTON FOR APPROX 5 SECONDS. EVENTUALLY THE CAR POWERED ON AGAIN. THIS HAPPENED TWICE IN THE LAST 48 HOURS. THE CAR IS CURRENTLY AT THE DEALER. READING THROUGH NHTSA REPORTS, IT APPEARS THIS HAS HAPPENED TO OTHER SONATA HYBRID CUSTOMERS. IT SEEMS THERE IS A VERY DANGEROUS PROBLEM THAT CAUSES THE ENGINE TO TURN OFF WHILE DRIVING. *TR

I DRIVE THE HYUNDAI SONATA HYBRID. THE FIRST TIME THE PROBLEM OCCURRED AT APPROX 9800 MILES, I WAS DRIVING 60 MPH ON A HIGHWAY WHEN THE VEHICLE LOST BATTERY POWER AND AN ALARM SOUNDED, AND THEN A SIGNAL INDICATING TO "CHECK CHARGING SYSTEM." I IMMEDIATELY TOOK THE VEHICLE TO MY HYUNDAI DEALERSHIP WHERE THEY WERE AWARE OF THE ISSUE, BUT DID NOT KNOW HOW TO FIX IT AND SUGGESTED I JUST SIMPLY TURN OFF AND THEN RESTART MY CAR. IT HAPPENED TWO ADDITIONAL TIMES, ONE WHILE APPROACHING A STOP LIGHT, AND ANOTHER TIME WHILE I WAS STOPPED AT A STOP LIGHT. THE LAST TIME IT HAPPENED, I COULD NOT GET MY VEHICLE TO RESET BY RESTARTING ONCE. I HAD TO SHUT THE VEHICLE OFF, THEN ATTEMPTED SEVERAL TIMES TO RESTART. THE 4TH TIME I TRIED TO START IT, I WAS ABLE TO DO SO SUCESSFULLY. I DID NOTICE THE LAST...

2011 HYUNDAI SONATA HYBRID STOPS LOSES POWER COMES TO COMPLETE STOP - FOR THE THIRD TIME IN TWO MONTHS WHEN I STARTED MY CAR THE SERVICE INDICATOR LIGHT CAME ON AND STAYED ON. I NOTICED THIS TIME THAT THE CAR WOULD NOT GO FASTER THAN 40 MPH AND THE ENGINE IS NOT RUNNING THE CAR APPEARS TO BE RUNNING JUST OFF THE ELECTRIC MOTOR AND THE BATTERY. THE CAR WENT FOR ABOUT 2 MILES AND THE CAR LOST POWER AND CAME TO COMPLETE STOP. I HAD TO COMPLETELY SHUT OFF THE CAR AND RESTART IT BEFORE IT WOULD MOVE AGAIN - THIS IS A RE-OCCURRING AND VERY DANGEROUS SITUATION. *TR

TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED WHILE DRIVING 20 MPH THE VEHICLE STALLED. THE VEHICLE WOULD NOT RESTART. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER AND THE CONTACT WAS INFORMED THAT THE FUEL PUMP FAILED. THE FUEL PUMP WAS REPLACED, BUT THE FAILURE CONTINUED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHO WAS IN THE PROCESS OF DIAGNOSING THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 8,500.

AT 5:15 PM ON 8/22/11, I GOT INTO MY CAR TO GO WORK AND IT WOULD NOT START. IT WAS VERY HOT AND I WAS SWEATING TRYING TO GET THE CAR STARTED. I TRIED SEVERAL TIMES BUT THE CAR WOULD NOT START. I CALLED THE DEALERSHIP AND I GOT NO ASSISTANCE. THE SCREEN ON THE DASH-BOARD READ "PRESS THE BRAKES" WHICH I DID LIKE I HAVE DONE IN THE PAST. I GAVE UP AND CONTACTED A FRIEND TO TAKE ME TO WORK. LATER, THAT NIGHT IT DID START BUT WOULD NOT START AGAIN SO I ASSUMED IT WAS THE BATTERY. I CALLED ROADSIDE SERVICE AND THEY ARRIVED 5:30 AM IN THE MORNING TO JUMP START THE CAR (NOT THE BATTERY). IT GETS BETTER, A LADY THAT LIVES IN MY AREA WAS WALKING HER DOG, WHO HAS A BLACK SONATA 2011 TOLD ME THAT HER SONATA WOULD NOT START AND SHE...

LOSS OF POWER, CAR SHUTS DOWN, 'CHECK CHARGING SYSTEM' ALARM/CHIME WITH ALARM SYMBOLS ON DASH DISPLAY FOR BATTERY, CHECK ENGINE AND WRENCH ICONS. HAVE TO PULL OFF THE HIGHWAY SOMEHOW (IN MIDST OF HEAVY TRAFFIC) TO SHUT CAR COMPLETELY OFF AND RESTART. ON THIRD INCIDENT (ONE DAY AFTER SECOND), CAR WOULD NOT RESTART FOR 10 MINUTES AND CHECK ENGINE ICON REMAINED LIT. EVERY INCIDENT HAS BEEN WHILE TRAVELING AT HIGH RATE OF SPEED IN COMMUTER HIGHWAY TRAFFIC. VERY FRIGHTENING AND DANGEROUS EXPERIENCE FOR DRIVER AND SAFETY HAZARD TO OTHERS WHEN IT OCCURS. *TR

UPON PULLING OUT FROM A STOP SIGN THE ENGINE STALLED, AFTER COASTING TO A STOP AND PLACING IN PARK I TRIED TO RESTART ENGINE. ALL LIGHTS WENT OFF AND MOTOR DID NOT TURN. ATTEMPTED AGAIN, SAME THING THEN PASSENGER COMPARTMENT FILLED WITH SMOKE. FIRE DEPT ARRIVED AND DETERMINED SOMEWHERE IN DASH A COMPONENT HAD FRIED.THEY THEN DISCONNECTED BATTERY. VEHICLE WAS TOWED TO DEALER, PER DEALER ENGINE LOCKED UP AND THEY HAVE TO DISASSEMBLE DASH TO DETERMINE WHAT HAD FRIED. *TR

WHEN PULLING OUT OF A PARKING LOT FROM A STOP THE SERVICE LIGHT CAME ON AND THE CAR'S READY LIGHT STARTED FLASHING. THE CAR LOST ALMOST ALL POWER WHILE I WAS IN THE CENTER OF THE ROAD. OTHER CARS WERE ABLE TO AVOID ME, BUT THEY COULD HAVE EASILY RAN INTO ME. SHUTTING THE CAR OFF AND RESTARTING IT RESTORED NORMAL OPERATIONS. *TR

SONATA HYBRID. DRIVING ON THE FREEWAY AT 60 MPH ON CRUISE CONTROL. EXIT RAMP WITH CRUISE CONTROL OFF AND CAR GLIDING TO STOP LIGHT IN EV MODE. STOPPED AT RED LIGHT FOR 3-5 SECONDS. THEN PUSHED THE ACCELERATOR ... THE CAR LOST POWER, WOULD NOT MOVE, INSTRUMENT PANEL LIGHTS FLASHED, AUDIBLE DING WARNING SOUNDED. DISPLAY SCREEN SHOWED "CHECK CHARGING SYSTEM" THEN SCREEN SHOWED TO PUT CAR IN PARK. I THEN PLACED CAR IN PARK AND PUSHED THE IGNITION BUTTON AND CAR HAD POWER TO DRIVE OFF THE STREET AND OUT OF THE FLOW OF TRAFFIC. I THEN LOOKED OVER THE CAR, NO WARNING LIGHTS OR SOUNDS. I TEST DROVE IT IN A PARKING LOT TO MAKE SURE IT WOULD NOT STOP AGAIN. CONDITIONS AT TIME OF EVENT: BLUE DRIVING MODE, GAS TANK LEVEL AT 1/2, HYBRID BATTERY CHARGE AT 1/2 RADIO ON, HEADLIGHTS ON, AIR CONDITIONER OFF, AND THE OUTSIDE...

2011 HYUNDAI SONATA HYBRID STOPS LOSES POWER COMES TO COMPLETE STOP - FOR THE SECOND TIME IN TWO MONTHS WHEN I STARTED MY CAR THE SERVICE INDICATOR LIGHT CAME ON AND STAYED ON. I NOTICED THIS TIME THAT THE CAR WOULD NOT GO FASTER THAN 40 MPH AND THE ENGINE IS NOT RUNNING THE CAR APPEARS TO BE RUNNING JUST OFF THE ELECTRIC MOTOR AND THE BATTERY. THE CAR WENT FOR ABOUT 2 MILES AND THE CAR LOST POWER AND CAME TO COMPLETE STOP. I HAD TO COMPLETELY SHUT OFF THE CAR AND RESTART IT BEFORE IT WOULD MOVE AGAIN. *TR

2011 SONATA LIMITED WITH SMART KEY FOB HAS FAILED TO START A MINIMUM OF 7 TIMES IN THE LAST 60 DAYS.IT APPEARS THAT SOMETIMES THE CAR DOES NOT RECOGNIZE THE SMART KEY AND THIS DOESN'T CHANGE IF THE SMART KEY IS INSERTED INTO THE CENTER CONSOLE SMART KEY HOLDER. THE BATTERIES HAVE BEEN REPLACED IN THE KEY FOB AND THIS DOES NOT RESOLVE THE PROBLEM. WHEN ATTEMPTING TO START THE CAR THE COMPUTER SIMPLY STATES TO DEPRESS THE BRAKE PEDAL AND PUSH THE START BUTTON, WHICH I'VE BEEN DOING. THE BRAKE PEDAL OFTEN FEELS HARD AS A ROCK ALMOST LIKE IT'S LOCKED.THE NORMAL DIAGNOSTIC LIGHTS AND FUEL GUAGE DOES OPERATE BUT THE CAR DOESN'T START. I'VE WAITED AS LONG AS 1/2 HOUR ATTEMPTING AND RE-ATTEMPTING TO START THE VEHICLE. AFTER IT STARTS, THE CAR MAY WORK PERFECTLY FINE FOR THE NEXT FEW TRIPS UNTIL THE PROBLEM REAPPEARS. THIS IS A...

HYUNDAI SONATA HYBRID STOPS LOSES POWER COMES TO COMPLETE STOP - WHILE DRIVING DOWN THE ROAD AT ABOUT 40 MPH CAR LOST POWER AND CAME TO COMPLETE STOP. I HAD TO COMPLETELY SHUT OFF THE CAR AND RESTART IT BEFORE IT WOULD MOVE AGAIN. *KB

ENGINE CAN EASILY BECOME HYDRO-LOCKED IN HEAVY RAIN AND ROAD SPLASH BACK FROM OTHER VEHICLES DUE TO THE DESIGN OF THE DIRECT AIR INTAKE OF THE SONATA HYBRID. WITH ITS DESIGN, IT DOES NOT HAVE ANY WATER BAFFLES TO PREVENT WATER FROM ENTERING THE AIR FILTER AND ONCE IT ENTERS THE AIR FILTER BOX, THERE ARE NO DRAIN HOLES FOR IT TO DRAIN OUT. THIS FORCES THE WATER THROUGH THE ENGINE AS THAT IS THE ONLY WAY FOR IT TO GET OUT OF THE FILTER BOX. WHEN THE ENGINE STALLED, NO ELECTRONIC CONTROL WARNING LIGHTS WERE ILLUMINATED AND THE CAR REMAINED IN THE 'READY' STATE. THIS COULD LEAD TO DAMAGE OF THE HEV SYSTEM AND BATTERY PACK. PER THE TECHNICIAN SERVICING THE CAR, THEY STATED THAT THE HEV WARNING LIGHT ONLY ILLUMINATED WHEN THE HEV BATTERY REACHES 15% CHARGE (THE POINT AT WHICH THEY HAVE TO REPLACE IT), THIS CONTRADICTS...

TURNED INTO DRIVEWAY, CAR SLOWED TO 5 MPH. SUDDENLY CAR RAPIDLY ACELERATED AND CAR STRUCK GARAGE DOOR PILLAR ON LH SIDE. CAR STOPPED BY IMPACT. EXTENSIVE DAMAGE TO GARAGE STRUCTURE. CAR HAS EXTENSIVE DAMAGE TO LEFT FENDER, HEAD LIGHT, BUMPER AND HOOD. MAY HAVE HIDDEN DAMAGES.

I DROVE TO THE LOCAL TOM THUMB STORE AND WAS PULLING INTO A PARKING SPACE. MY FOOT WAS ON THE BRAKE AND THE CAR WAS ALMOST TO A COMPLETE STOP WHEN IT SUDDENLY LURCHED FORWARD AND THE ENGINE SPONTANEOUSLY WENT TO FULL THROTTLE. I MASHED DOWN ON THE BRAKE PEDDLE AS THE CAR JUMPED THE CURBED AND CRASHED THROUGH THE STORE FRONT. THE ENGINE CONTINUED TO RACE UNTIL I SWITCHED OFF THE KEY. SKID MARKS WERE EVIDENT ON THE PAVEMENT WHERE THE BRAKES TRIED TO HOLD THE CAR WITH THE ENGINE RACING. THE FLORIDA HIGHWAY PATROL INVESTIGATOR DID NOT ISSUE A CITATION STATING THAT THERE "WAS AN OBVIOUS VEHICLE MALFUNCTION".

WHEN STARTING FROM A STOP, THE VEHICLE WOULD ACCELERATE FOR A VERY FEW FEET - MAYBE 6-8 FEET, AND THEN QUIT - LIKE THE ENGINE HAD DIED, BUT IT HADN'T. THIS HAS HAPPENED 4-5 TIMES AND 3 OF THESE TIMES WERE WHEN TURNING LEFT THROUGH AN INTERSECTION WITH ON-COMING TRAFFIC. THE LAST TIME WAS ESPECIALLY HARROWING BECAUSE IT WAS DURING RUSH HOUR TRAFFIC. IT SEEMS TO TAKE 3-5 SECONDS FOR THE ENGINE TO "CATCH" AND ACCELERATE ON THROUGH THE INTERSECTION. PUMPING THE ACCELERATOR PEDDLE DID NOT HELP. IT IS LIKE THE ENGINE IS RECEIVING NO FUEL, OR IT IS FLOODING OUT FROM TOO MUCH FUEL (NO SMELL OF GASOLINE WAS DETECTED, HOWEVER). THIS IS A POTENTIALLY DANGEROUS SITUATION IF THE ENGINE EVER FAILS TO "RECOVER" AND ACCELERATE AS IT SHOULD. IT SHOULD ALSO BE NOTED THAT I HAVE COMPLAINED TO MY DEALER THAT THIS CAR DOES NOT RUN FROM IDLE...

2011 HYUNDAI SONATA: I HAD HEARD ABOUT THE DOOR LATCH RECALL ON MY NEW SONATA VIA NEWS REPORTS. I PURCHASED THIS SONATA ON FEB 16TH,2010. SO,I CALLED AND THE DEALER(ST.AUGUSTINE HYUNDAI)SAID I WASN'T INCLUDED IN THE DOOR LATCH RECALL. THE DEALER SAID THERE WAS 2 BULLETINS ON MY SONATA ANYHOW. #1,THE IGNITION WIRE NEEDS REROUTING OR IT COULD BECOME AFRAID. #2,THE ECM COMPUTER NEEDED RE-PROGRAMMING AT THAT TIME WITH AN EXPLANATION THAT SOME NEW SOFTWARE FROM HYUNDAI WHEN IT ARRIVED TO THE DEALER,THEY WOULD CHECK THE PARAMETERS OF THE ECM COMPUTER PROGRAM. NOW,I HAVEN'T TO THIS DATE RECEIVED ANY INFORMATION REGARDING ANY OF THESE 3 ISSUES WITH MY NEW 2011 SONATA FROM ANYONE IN THE MAIL? ON 3/16/2010 YESTERDAY I RECEIVED A CALL FROM HYUNDAI USA CORPORATION. THE MAN SAID MY CAR" IS" AFFECTED NOW BY THE DOOR LATCH RECALL. I DIDN'T ASK HIM ABOUT THE OTHER 2 BULLETINS MENTIONED...