2016 Hyundai Sonata Hybrid

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/30/2021· ENGINE

  1. engine blew 2. driving on highway, lost power, had to coast off exit 3. at dealer was told waiting to hear from Hyundai 4. at dealer 5. oil light went on in between oil changes, had to add oil in between oil changes, knocking, and poor gas mileage, prior to engine blowing, no other warning lights no other warning lights

• 12/30/2019· SERVICE BRAKES,ENGINE

  DRIVING TO AIRPORT IN CAR. JUST PULLED IN TO FREEWAY AFTER STOPPING AT STORE 45 MINS INTO DRIVE. MY 3016 SONATA HYBRID LIMITED STARTED MAKING A KNOCKING SOUND. MY BOYFRIEND WHO IS A MECHANIC RECOGNIZED IT IMMEDIATLY. THEN SUDDENLY ENGINE MADE LOUD NOISE AND PARTS AND OIL FLEW ALL OVER BEHIND US FROM UNDERNEATH CAR. HE MANAGED TO GET IT OFF ROAD WITHOUT US GETTING HIT.WAITED 4 HOURS FOR TOW THAT WAS COVERED BY WARRANTIES I PURCHASED. HYUNDAI TRIED TO STATE THAT ONLY 2 PEOPLE COULD RIDE IN TOW TRUCK. SO ONE PERSON (THERE WERE 2 ADULTS AND A CHILD) WOULD HAVE TO WAIT IN MIDDLE OF NOWHERE WHILE OTHER 2 WENT THE HOUR BACK HOME WITH TOW TRUCK AND THEN CAME THE HOUR BACK. THERE WASN'T A GAS STATION OR ANYTHING AROUND. THE CAR IS IN SHOP WAITING TO SEE WHAT WARRANTY SAYS ABOUT IT NEEDING A NEW ENGINE. ALL MAINTENANCE WAS DONE AND WAS IN HYUNDAI SHOP 5 WEEKS PRIOR WITH ABS UNIT NEEDING REPLACED. THERE WAS NO WARNING LIGHT OR ENGINE LIGHT THAT ALERTED US TO A POSSIBLE ISSUE.

• 12/20/2016· UNKNOWN OR OTHER

  SPONTANEOUS EXPLOSION OF PANORAMIC SUNROOF AS I WAS TRAVELLING DOWN THE HIGHWAY AT ABOUT 60 MPH. NO FOREIGN OBJECT INVOLVED. SOUNDED LIKE A BOMB WENT OFF ABOVE MY HEAD. THANK GOODNESS, THE INNER LINER WAS CLOSED.

• 12/16/2019· POWER TRAIN

  THE AUTOMATIC TRANSMISSION ON THE 2016 HYUNDAI SONATA HYBRID WENT OUT ON THE CAR OCT 31, 2019. MY WIFE WAS DRIVING THE CAR, WHEN SHE LOST DRIVABILITY OF THE CAR. THE CAR WOULD NOT GO, SHE WAS ABLE TO PARK IT ON A SIDE STREET. SHE RESTARTED THE CAR BUT WOULD NOT GO INTO GEAR, THE ENGINE WAS RUNNING. THE CAR WAS TOWED TO THE CLOSEST DEALERSHIP, WHEN SCANNED, INDICATING OF A TRANSMISSION PROBLEM. THE CAR HAS BEEN AT THE DEALERSHIP SINCE OCT 31, 2019 WITH NO ETA OF WHEN A NEW TRANSMISSION WILL BE AVAILABLE TO REPAIR THE CAR. AT THIS POINT I CAN NOT SALE THE CAR BECAUSE IT NEEDS A TRANSMISSION. HYUNDAI NEEDS TO GIVE A DATE WHEN THE TRANSMISSION WILL BE AVAILABLE. THE DEALERSHIP HAS NO TIME FRAME WHEN THEY WILL GET A TRANSMISSION FROM HYUNDAI.

• 12/14/2017· VEHICLE SPEED CONTROLCrash

  HTTPS://YOUTU.BE/Z4THV5A3LRK DYNAMIC CRUISE CONTROL THAT STOPS AND STARTS IN BUMPER-TO-BUMPER TRAFFIC IS WHAT SOLD ME ON THIS CAR. LAMENTABLY, I DID NOT KNOW HYUNDAI EXCLUDES AEB FROM HYBRID LTD ULTRAS. AS THE VIDEO SHOWS, FRANTIC BEEPING FROM THE FORWARD COLLISION WARNING SYSTEM WAS NOT ACCOMPANIED BY ANY BRAKING AT ALL. I SLAMMED ON THEM TOO LATE. I WAS IN DCC MODE WHEN THE WARNING SOUNDED. DCC CAN GRADUALLY SLOW FROM FREEWAY SPEED TO A STOP AND RESUME, BUT FCW APPARENTLY CANCELS DCC'S BRAKING! THIS MUST BE NO MORE THAN A DIFFERENCE IN SOFTWARE BETWEEN GAS-ONLY AND HYBRID LTD ULTRAS BECAUSE ALL SENSING AND CONTROL HARDWARE ARE IDENTICAL. HYUNDAI'S RESPONSE TO MY INQUIRIES ARE JUST REPETITIOUS CONFIRMATIONS OF WHAT I ALREADY DISCOVERED THE HARD AND EXPENSIVE WAY.

• 12/09/2020· STEERINGCrash

  ON FRIDAY NIGHT, OCTOBER 23, 2020, I WAS DRIVING EAST ON E. MAIN STREET IN MESA, AZ HEADED TO THE RED MOUNTAIN 202 FREEWAY. THE LIGHT WAS GREEN AS I APPROACHED THE INTERSECTION AND I MADE A RIGHT TURN ONTO THE FREEWAY FRONTAGE ROAD TO HEAD SOUTHBOUND. I WAS DRIVING APPROXIMATELY 25 MPH AS MY CAR'S STEERING BECAME RIGID AND FELT LIKE MY POWER STEERING HAD GONE OUT. I COULD BARELY COMPLETE THE RIGHT TURN CAUSING MY CAR TO CAREEN INTO THE CONCRETE SIDE BARRIER CAUSING DAMAGE TO THE FRONT DRIVER'S SIDE OF THE VEHICLE. MANY OF THE DASHBOARD LIGHTS WERE ON WITH MANY DIFFERENT ALERTS AS I PULLED OVER WITH MY PASSENGER. WE PULLED OVER IMMEDIATELY AFTER THE COLLISION TO ASSESS THE DAMAGES AND OUR WELL BEING FOR A FEW MINUTES. I THEN PROCEEDED TO DRIVE TO MY PLACE OF WORK A FEW MILES AWAY AND PARK THE CAR SO I COULD CONTACT THE DEALERSHIP WHO HAD WORKED ON MY CAR THREE DAYS PRIOR. THE NEXT MORNING, OCTOBER 24, 2020, I CALLED THE HORNE HYUNDAI DEALERSHIP AND LEFT A MESSAGE AT THE SWITCHBOARD FOR A SERVICE MANAGER TO CALL ME. I INFORMED HER THAT I HAD BEEN INVOLVED IN AN ACCIDENT. ON MONDAY MORNING, OCTOBER 26, 2020 I DROVE THE CAR TO THE DEALERSHIP TO BE INSPECTED. ON WEDNESDAY, OCTOBER 28, 2020, I WAS INFORMED BY MATT COLTON, SERVICE MANAGER FROM HORNE HYUNDAI, THAT IT WAS NOT THEIR ISSUE AND THAT I 'NEEDED TO TURN IT INTO MY INSURANCE.' AS A RESULT, I HAVE NOT DRIVEN MY UNREPAIRED CAR, IT IS SECURELY PARKED AT MY PLACE OF EMPLOYMENT AS TO PRESERVE IT FOR INSPECTION.

• 12/07/2020· POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM

  2016 HYUNDAI SONATA HYBRID IGNITION ISSUE THE ENGINE IS RATTLING WHILE IDLING AND UNDER ACCELERATION AND THE CHECK ENGINE LIGHT IS COMING ON. BELIEVE IT IS AN ISSUE WITH EITHER SPARK PLUGS OR IGNITION COIL. SERVICE DEPT SAID BOTH COMPONENTS LOOKED FREE OF DAMAGE UPON INSPECTION.

• 12/03/2016· EXTERIOR LIGHTING

  ON A DARK OR DIMLY LIT ROAD THE LOW BEAM HEADLIGHTS CREATE A SHARP BOUNDARY LOOKING THROUGH THE WINDSHIELD WITH HEADLIGHT ILLUMINATION ON THE LOWER AREA AND DARKNESS ON TWO THIRDS DOWN FROM THE TOP OF THE VIEWING AREA. IT IS AS IF THE WINDSHIELD HAS A LINE HORIZONTALLY ACROSS IT TWO THIRDS DOWN IN THE FIELD OF VIEW. THE LINE BOUNCES WHEN THE CAR BOUNCES AND DARK UPPER PORTION CAN NOT BE PROPERLY VIEWED THROUGH TO SEE THE ROAD AHEAD. IT IS A SAFETY ISSUE DUE TO POOR VISIBILITY. THE DEALER HAS SAID A FEW TIMES THERE IS NO ISSUE AND NO REPORTED ISSUE. THIS IS A CONTINUOUS FLAW IN THE CAR FROM WHEN WE FIRST PURCHASED IN NOV 2015.

• 11/22/2025· UNKNOWN OR OTHER

  Vehicle experiences intermittent DTC C222908 (Integrated Brake Actuator internal circuit malfunction). Warning lights (Brake, ABS, ESC, Hybrid System) illuminate intermittently, brake pedal feel changes, and regenerative braking fails. Dealer confirmed stored code but refused repair stating "no current issue". This is a known failure in 2015-2019 Hyundai hybrids that can lead to sudden loss of hydraulic brake assist and increased stopping distance. Safety critical defect.

• 11/21/2022· ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,UNKNOWN OR OTHER

  While driving on the highway at speed, I received a red Check Hybrid System error, and immediately lost all acceleration, putting myself and all occupants at risk on a busy interstate highway, as we tried to find a safe way to quickly change lanes and coast to a stop in a safe location. The cause is under diagnosis by a Hyundai Service Center. This was a sudden failure and there had been no previous warning alerting us to substandard system condition.

• 11/19/2021· SERVICE BRAKES, AIR

  The contact owns a 2016 Hyundai Sonata. The contact stated while driving 40 MPH, the warning message "Stop Car, Check Brake" illuminated and the brake pedal felt rigid when depressed. The contact veered to the side of the road and turned off the vehicle. The contact stated that as she restarted the vehicle, the brake pedal was no longer rigid, and responded when depressed. The contact drove the vehicle to her residence. The vehicle was taken to the independent mechanic who diagnosed that the brake unit and the pressure source needed to be replaced. The manufacturer and the dealer were not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 114,897.

• 11/18/2021· ENGINE

  eginning in June 2020, my check engine light on my 2016 Hyundai Sonata Hybrid started coming on. I took it into a dealer to get it fixed. The problem seemed to be fixed until the light came on again, took it to the dealer who replaced a different part, seemed be fixed, and so forth until the engine blew while I was driving to work(2/3/2021). It was towed to a dealer and the engine was found to be seized. Luckily Hyundai had just sent out a recall letter to me cautioning about a faulty engine. (There are now lawsuits against Hyundai for this same reason).Hyundai replaced the engine. Meanwhile I found their campaign reimbursement page (case #17706103) and submitted all my out of pocket cost since the first check engine light occurrence (6/10/20) through to the car rental cost which was when the car engine was replaced (6/21/2021). Sum total $2,644.55. Before Hyundai replaced the engine, they knew about the engine failure associated with my car. But they had no remedy so dealers were left with no other choice but to replace a part and reset the warning light hoping to satisfy me until Hyundai came up with a solution. (This caused me to rack up repair bills with no real permanent solution.) I was assigned 3-4 case managers who promised to help me recover my losses but all of them actively or passively pacified me until I found out my case was arbitrarily closed.

• 11/12/2020· POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

  WHILE THE VEHICLE IS MOVING THE CHECK HYBRID SYSTEM WARNING LIGHT BEEPS AND COMES ON. THE MESSAGE REQUEST TO TURN ENGINE OFF. THE GAS ENGINE SOMETIMES WILL CUT THE POWER TO THE VEHICLE CAUSING THE VEHICLE TO LOSS POWER ON THE ROAD.

• 11/10/2023· ENGINE

  I was driving on the freeway and the car went from 70 mph to 60 then 50 then 40 slowing on the freeway each second. This has happened multiple times, each time taken in Hyundai and “repaired” only to happen a couple months later.

• 11/03/2021· POWER TRAIN,ELECTRICAL SYSTEMCrash

  The parking mechanism in the transmission failed. The car was parked in my garage . The lever was in the "Park" position when the car drove backwards out of my garage and crashed into the fence. It continued driving into the street and into the neighbors yard. Two people were out walking and saw it happen. I know I did not leave my car in neutral or reverse when I parked it in my garage. When I tested this later sitting in my car, in my garage, the car immediately began moving backwards instantly, while i was still at the wheel. Had the car been in neutral or reverse at the time this incident occurred, I would have known it was moving immediately and shifted it into park right away. When this incident happened I put the car into park, and I got out of my car , I got things from my trunk and went inside the house. Then I went back to the car to get more things. This is when I witnessed it driving out of my garage backwards. I was standing on my back step. Then I ran across the street to my car and got in the drivers seat to attempt driving it back to my garage. I had to yank it out of park and then shove it back into park to get it to start correctly. Then I was able to get it running again and drove it back across the street to my house. thank God no one including myself got hurt. The possibility of this happening shook me up for days. I reported this to Hyundai and waited 3 months for them to make a determination, they said they cant prove it , that it is my word against theirs. I looked online , and saw reports of this happening to other vehicles as late as 2017 even tho the recall for this was 2011-2014. I started using the electronic parking brake because i read online that other people who have had this happen said to do it. I need to buy a new car dont feel safe in this one.

• 11/01/2016· VEHICLE SPEED CONTROL

  TL* THE CONTACT OWNS A 2016 HYUNDAI SONATA HYBRID. WHEN DRIVING THE VEHICLE UP OR DOWN AN HILL, IT FAILED TO MAINTAIN THE DESIRED SPEED. INSTEAD, THE VEHICLE'S SPEED WOULD INCREASE OR DECREASE 5-6 MPH FROM THE DESIRED SPEED. THE CONTACT ALSO STATED THAT THE VEHICLE'S RESUME FEATURE FAILED TO RETURN THE VEHICLE BACK TO THE DESIRED SPEED WHEN DRIVING. THE FEATURE SET THE VEHICLE AT THE AUTOMATIC SET SPEED OF 40 MPH. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHERE IT WAS DISCOVERED THAT THE SPEED CONTROL ONLY WORKED ON HIGH INCLINE TYPE OF ROAD CONDITIONS. IN ADDITION, THE RESUME FEATURE FAILED. THE VEHICLE'S COMPUTER SYSTEM WAS RESET; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND BELIEVED IT MAY BE PART OF THE DESIGN FEATURE. THE APPROXIMATE FAILURE MILEAGE WAS 8,000. *TR

• 10/30/2018· ELECTRICAL SYSTEM

  TL* THE CONTACT LEASED A 2016 HYUNDAI SONATA HYBRID. THE CONTACT STATED THAT THE VEHICLE FAILED TO START WITH THE TRIANGLE SHAPED (MASTER WARNING LIGHT) WARNING INDICATOR LIGHT ILLUMINATING. THE CONTACT STATED THAT THE VEHICLE WAS ABLE TO START AFTER SEVERAL ATTEMPTS. THE VEHICLE WAS NOT TAKE TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 33,600.

• 10/27/2016· VISIBILITY

  WHILE I WAS DRIVING ON INTERSTATE , MOONROOF/SUNROOF START MAKING AWKWARD NOISE. I NOTED THE MOONROOF HAD CAME OUT OF IT'S POSITION. I HELD WITH ONE HAND AND DRIVE SO THAT OTHER VEHICLES APPROACHING WILL BE SAFE. UNFORTUNATELY I COULD NOT HOLD LONGER DUE TO THE WIND POWER AND IT FLEW BACK AND SHATTERED THE ENTIRE MOONROOF. I JUST WANT THE NHTSA TO BE AWARE OF THIS INCIDENT. *TR

• 10/23/2023· ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,FORWARD COLLISION AVOIDANCE

  HEV WARNING TURN OFF ENGINE SIGN WHILE DRIVING ON THE INTERSTATE MY CAR LOST POWER AND THE CAR BEHIND ME HAD TO SUDDENLY MOVE OVER THIS IS VERY UNSAFE WHILE DRIVING DOWN THE INTERSTATE

• 10/23/2023· ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE

  HEV WARNING TURN OFF ENGINE CAR STARTED SHAKING while driving on the interstate gas pedal went to the floor car started making a loud noise from the engine I put car in park and it would not move for 45 minutes at a stop sign

• 10/22/2021· ENGINE AND ENGINE COOLINGFire

  The contact owns a 2016 Hyundai Sonata. The contact stated that while the daughter was driving approximately 55 mph smoke was suddenly present coming from under the hood before the engine failed and the vehicle stalled. The vehicle was towed to the local dealer who diagnosed that the engine needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 140,000.

• 10/18/2019· UNKNOWN OR OTHER

  THE ANCHOR THAT HOLDS THE SUNROOF DEFLECTOR IN PLACE SEPARATED WHERE IT WAS BONDED AND GETS IN THE WAY WHEN THE SUNROOF TRIES TO CLOSE. THE DEFLECTOR PARTIALLY DETACHED IN THE FRONT, AND INTERFERES WITH THE GLASS OF THE SUNROOF WHEN CLOSING. THIS HAPPENED WHILE DRIVING DOWN THE HIGHWAY. I HAD TO PULL OVER TO THE SIDE OF THE ROAD AND STAND OUTSIDE THE VEHICLE WHILE ANOTHER PERSON CLOSED THE SUNROOF. WE NEEDED TWO PEOPLE TO GET THE SUNROOF CLOSED.

• 10/17/2018· ELECTRICAL SYSTEM,STRUCTURE

  VEHICLE STATIONARY. TRUNK WOULD NOT OPEN WITH ELECTRIC SWITCH, USED VEHICLE KEY TO OPEN TRUNK, THEN TRUNK WOULD NOT LATCH CLOSED. INTERMITTENT AND OR UNRELIABLE TRUNK OPEN/CLOSED WARNINGS IN DRIVER INFORMATION CENTER... TRUNK LIGHT INTERMITTENT AND/OR UNRELIABLE, IRRESPECTIVE OF OPEN/CLOSED STATUS IN DRIVER INFORMATION CENTER. DEALER SERVICE DETERMINED LATCH ASSEMBLY TRUNK LID HYUNDAI PART 81230 ' C1010 FAILURE OF DETENT SPRING INTERNAL OF LATCH, BROKEN AND LOOSE. DEALER RESOLUTION, REPLACE MENTIONED PART.

• 10/12/2023· ELECTRICAL SYSTEM,ENGINE

  As I was driving on the highway at 65MPH, a sudden warning appeared on the dashboard that read, "CHECK HYBRID SYSTEM/TURN OFF ENGINE". Immediately after that, I noticed that my vehicle started behaving erratically, making it difficult to control. I stepped on the gas pedal expecting the car to pick up speed and move forward. Despite the pressure I applied, the car failed to accelerate, leaving me stuck in my current position. After nearly causing a severe accident on a busy interstate, I was able to safely pull my car over to the side of the road. After conducting extensive research, I discovered that the issue I am facing with my hybrid vehicle is actually quite common among Hyundai Sonata Hybrids. It's surprising to note that despite this problem's prevalence, no recall or common solution has been provided to address it. I am highly concerned that Hyundai has not taken any action to address this issue. I request an immediate resolution as I could have been severely injured or lost my life today!

• 10/09/2025· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  The car will randomly lose acceleration and jerk forward. It will make a beeping noise while the hev system warning flashes on the dash. It also says to turn off engine. While the warning is flashing and engine light is on it goes into a limp mode and you have limited acceleration. It has almost caused multiple wrecks when I go to acceleration from turning or at lights in traffic because I cant go over 20-30 mph. I have turned the car on and off and the hev system and engine light turns off and the car continues to work normal. It eventually comes back on and does the same loss of power/hev warning. It will be random and does not matter on how fast you are going to trigger the warning lights and loss of power.

• 10/02/2020· EXTERIOR LIGHTING

  WITH THE HEADLIGHTS SET TO AUTO, WHEN USING USING THE TURN SIGNAL THE HEADLIGHT TURN OFF OCCASIONALLY. THIS HAPPEN MORE OFTEN WHEN SIGNALING RIGHT TURN OR LAIN CHANGES. LINK TO VIDEO THE FILE IS TO LARGE TO UPLOAD. THIS HAPPENS DAILY NOW. HTTPS://YOUTU.BE/-GOIGZ3TBHY

• 09/25/2017· SERVICE BRAKES

  9/14 VEHICLE PARKING BREAKS ENGAGED. REPLACED PARKING BREAK SENSOR AND MOTOR AND CAR WAS AVAILABLE TO BE PICKED UP ON 9/21, BUT NOT PICKED UP UNTIL 9/24. ON 9/25 PARKING BREAK ENGAGED AGAIN DOING ROUGHLY 15MPH AFTER TURNING THE VEHICLE ON IN A PARKING LOT.

• 09/19/2017· SERVICE BRAKES

  WHILE DRIVING IN A PARKING LOT, THE PARKING BREAK AUTOMATICALLY ENGAGED. APPROX SPEED WAS 15 MPH. REPAIRS STILL BEING WORKED AFTER 5 DAYS. UNKNOWN ROOT CAUSE. ATTEMPTING TO REPLACE THE MOTOR NEXT.

• 09/17/2024· POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

  While on the highway vehicle started shaking violently, flashing engine light then service hybrid system along with every light on the dash! Car still running poorly, stiff steering very hard to slow down to get to safety! By the time I was able to pull over the engine was knocking and a burning smell was coming from the engine compartment. I popped the hood shut the car off , the exhaust manifold and converter(in one together) was so hot it was glowing! I’m thankful I was able to get to safety without it catching fire because it was on its way there! I called for a tow and sent it to the dealer where Hyundai is replacing the engine.

• 09/13/2020· ELECTRICAL SYSTEM,UNKNOWN OR OTHER

  NUMEROUS POSTS AND THIS HAS OCCURRED TO ME NUMEROUS TIMES WITHIN THE PAST 2 MONTHS. AFTER DRIVING VEHICLE ON THE FREEWAY, AND GETTING OFF TO GET GAS OR STOP TO GET GROCERIES OR ANYTHING, WHEN THE VEHICLE IS TURNED OFF, CHECK HYBRID SYSTEM LIGHT COMES ON AND VEHICLE IS DISABLED. WILL NOT START OR ATTEMPT TO START FOR AT LEAST 20 MINUTES. WHEN VEHICLE STARTS BACK UP THE CHECK ENGINE LIGHT COMES ON AND STAYS ON UNTIL THE VEHICLE IS TURNED OFF AGAIN THEN THE CEL GOES AWAY. SOUNDS LIKE NUMEROUS PEOPLE ARE HAVING THIS ISSUE, I HOWEVER HAVE BEEN LUCKY THAT IT HASN'T SHUT OFF WHILE DRIVING ON THE FREEWAY, SOUNDS LIKE MANY OTHER PEOPLE IT HAS. THERE NEEDS TO BE A RECALL OR THE CAR BE LABELED AS LEMON OR SOMETHING.

• 09/07/2026· POWER TRAIN,ELECTRICAL SYSTEM

  Vehicle Impact:While driving, the vehicle suddenly displayed a "Check Hybrid System" warning on the dashboard and suffered a complete, sudden loss of propulsion while on the road. The vehicle dropped power completely and would not restart, creating an immediate, severe safety hazard to myself and surrounding traffic.Diagnostic & Component Confirmation:The vehicle was towed to a certified Hyundai dealership (Hyundai of Goshen, Repair Order #6080674). Diagnostic testing confirmed trouble codes P0717 (Input Speed Sensor No Signal) and P0A40 (Drive Motor Position Sensor).The dealership's certified technician explicitly documented that they "followed TSB and found input speed sensor valve body harness is faulty due to heavy corrosion on the sensor connector."Safety Hazard Summary:This is a critical manufacturing and sealing defect where an internal, non-wear component (the transmission valve body wire harness) corrodes prematurely. This corrosion blinds the hybrid control modules to the electric motor's position and output speed. To protect itself, the computer initiates a hard, uncommanded shutdown of the hybrid drivetrain while the vehicle is in motion.Hyundai Motor America was contacted (Case #43225229) but denied any financial or safety assistance because this documented Technical Service Bulletin (TSB) defect has not yet been elevated to a formal safety recall. This sudden powertrain failure presents an unreasonable risk of rear-end collisions and catastrophic highway accidents for 2016 Sonata Hybrid owners.

• 09/04/2018· SERVICE BRAKES

  II OWN A 2016 HYUNDAI SONATA HYBRID WITH 34,000 MILES. I HAVE HAD NO PROBLEMS WITH THE CAR UNTIL THE INCIDENT THAT OCCURRED ON AUG 5, 2018 WHILE DRIVING ON THREE LANE HIGHWAY 99 NORTH OF MODESTO. AT ABOUT 70MPH THE DASHBOARD LITE UP WITH BRAKE SYSTEM WARNINGS. AT THE SAME TIME, THE ENGINE SHUT DOWN. I STRUGGLED IN TRAFFIC TO MOVE TO THE SIDE OF THE ROAD AND GOT TO THE APRON AND FOUND I HAD NO BRAKES BUT MANAGED TO STOP. I TURNED THE IGNITION OFF AND VISUALLY INSPECTED THE CAR, ESPECIALLY THE BRAKES. SEEING NOTHING, AFTER A FEW MINUTES, TURNED IT BACK ON. THE ENGINE STARTED BUT THE WARNING LIGHTS REMAINED ON. I HAD BRAKES AND SLOWLY DROVE TO AN OFF RAMP TO GET HELP. AFTER GETTING OFF THE HIGHWAY, I STOPPED AND AGAIN TURNED THE IGNITION OFF. WHEN I TURNED IT BACK ON, ALL SYSTEMS WERE GOOD. I DROVE OVER 100 MILES HOME WITHOUT PROBLEMS. I IMMEDIATELY TOOK THE CAR TO MY DEALER, ALEXANDER HYUNDAI, OXNARD CA. AFTER 2 DAYS, THEY FOUND NO FAULTS BUT IN CONSULTATION WITH HYUNDAI SUPPORT, DECIDED THE PROBLEM WAS WITH THE HYDRAULIC BRAKING SYSTEM AND PERFORMED THE HYUNDAI RECOMMENDED SERVICE. I HAVE SERIOUS CONCERNS ABOUT THE SAFETY OF THE CAR BASED ON THE SERVICE PERFORMED. I WAS NOT USING THE BRAKES AT THE TIME OF THE SHUTDOWN AND WOULDN'T EXPECT IT TO FIX ITSELF. I WOULD NOT EXPECT THE PROBLEM DESCRIBED TO CAUSE AN ENGINE SHUTDOWN CREATING A SERIOUS SAFETY HAZARD. I RECEIVED NO ASSURANCES THAT IT WOULD NOT OCCUR AGAIN. THERE SHOULD BE A LIMITED NUMBER OF FAULTS THAT CREATE AN IMMEDIATE SHUTDOWN AND THE FAULT DESCRIBED SHOULD BE NOT BE ONE OF THEM. THE DEALERSHIP CLAIMS THEY HAVE DONE EVERYTHING THEY CAN AND DID WHAT HYUNDAI TECHNICAL SUPPORT RECOMMENDED. THEY PROVIDED NO EVIDENCE THEIR SERVICE REVEALED ANYTHING WRONG WITH THE BRAKE SYSTEM. SINCE THEY HAVE DONE WHAT THE HYUNDAI CORPORATION PRESCRIBED, THEY FEEL NO LIABILITY OR CONCERN FOR MY SAFETY.

• 09/01/2022· ENGINE

  The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated while driving approximately 65 MPH, several unknown warning lights illuminated and the vehicle decelerated independently. The contact was able to park on the side of the road before the vehicle stalled. The vehicle was not drivable. The contact towed the vehicle to a local dealer, where it was diagnosed with needing the knock sensor to be replaced. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was 34,252.

• 09/01/2021· ENGINE

  The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the ignition coils replaced. The vehicle was not repaired. The manufacturer was informed of the failure and the contact was awaiting a response. The failure mileage was approximately 135,000.

• 08/28/2016· SERVICE BRAKES

  NEW SONATA HYBRID, OWNED 3 MONTHS, MILEAGE 6,000 MILES. RIGHT REAR BRAKES HAVE LOCKED ON TWO DIFFERENT OCCASIONS AT LOW SPEED WHILE NEGOTIATING A HARD LEFT TURN ON A STATE HIGHWAY. BOTH FAILURES OCCURRED AT THE SAME HIGHWAY LOCATION ABOUT A MONTH APART. WHEN THE RIGHT REAR BRAKES LOCKED, THE VEHICLE WAS HARD TO CONTROL AND AS I WAS NEGOTIATING A SHARP TURN ON A MOUNTAIN ROAD, IT WAS TERRIFYING. IF THERE HAD BEEN OTHER VEHICLES COMING IN THE OPPOSING LANE, THERE VERY EASILY COULD HAVE BEEN A HEAD-ON COLLISION OR WORSE (I.E CAR OVER THE SIDE OF THE MOUNTAIN). CAR WILL BE TAKEN TO DEALER FOR ANALYSIS AND REPAIR.

• 08/19/2020· ELECTRICAL SYSTEM

  AT ABOUT 58K MILES I STARTED TO NOTICE WHEN I TURNED THE TURN SIGNAL TO INDICATE A LEFT TURN THE RIGHT BLINKER WOULD COME ON AND THEN AFTER A MOMENT SWITCH TO THE LEFT OR NOT SWITCH AT ALL. THIS WAS TOTALLY RANDOM. I TRIED TO CAPTURE IT ON CAMERA TO SHOW MY LOCAL DEALER BEFORE THE 60K WARRANTY RAN OUT BUT I COULD NEVER CAPTURE IT BECAUSE IT WAS SO RANDOM AND THEY COULD NOT REPLICATE IT. OVER THE LAST YEAR THE ISSUE HAS GOTTEN WORSE WHERE NEARLY EVERY TIME I USE THE LEFT TURN SIGNAL THE RIGHT SIGNAL WILL TURN ON INSTEAD. THE LAST TIME MY CAR WAS IN FOR SERVICE I MENTIONED IT AGAIN AND TOLD THEM I THINK THEY CAN REPLICATE THE ISSUE BECAUSE IT HAPPENS NEARLY EVERY TIME NOW. WHEN I INDICATE A LEFT SIGNAL AND THE RIGHT SIGNAL COMES ON OTHER CARS THINK I AM MERGING INTO THEM WHILE MY SIGNAL IS STUCK. THE SIGNAL STOCK SEEMS TO HAVE AN ELECTRICAL ISSUE SENDING THE CORRECT SIGNAL TO THE LIGHTS. THIS IS A CLEAR SAFETY ISSUE AND I HOPE IT DOES NOT CAUSE ACCIDENTS AS THE SIGNALS BECOME STUCK. THIS OCCURS REGARDLESS OF VEHICLE SPEED.

• 08/18/2021· ENGINE

  Lots of noise and car started smoking and stopped working while I was on the highway

• 08/13/2025· ENGINE

  The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that while driving at 20 MPH, the message "Shut Down" was displayed, and the vehicle lost motive power. The contact was able to pull over to the side of the road; however, the vehicle failed to restart. The vehicle was towed to the dealer, where it was diagnosed with engine failure, and the contact was informed that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and declined to cover the repair under warranty. The failure mileage was approximately 140,600.

• 08/09/2022· ENGINE

  My vehicle first went into limp mode and stalled while driving December 2021. Vehicle was taken to Dealership in Alpharetta, GA. I was advised the knock sensor needed an update. The update was completed but the vehicle continued to go in limp mode and stall again March 2022 after driving less than 1000 miles since previous repair. The vehicle was taken to dealership in Wake Forest, NC. This time there was no update for the knock sensor so I was advised they would need to replace knock sensor but it was on backorder until end of May 2022. The knock senor was replaced picked up vehicle and engine light came on by the time I had drove 50 miles and vehicle started to go in limp mode and stall again and car started shaking an bad vibration. Drove the car next morning and it put me down again going into limp mode, stalling, whole dash board lit up every warning light on and dinging, car shaking and made loud noise had to have towed back to dealership. This time dealership claim it came from misfire on cylinder 3 but that doesn't explain all the issues. I was called to pick up car again June 2022 car had bad vibration, knocking, still going into limp and stall mode, hybrid system warning light came on again, gear sticking not changing like it's supposed to had towed back to dealership. This time dealership replaced other 3 cylinders picked up car July 2022. Did a test drive advised car is still stalling, gear still sticking, vibration still , air not cooling and hybrid indicator needle bouncing back and forth from power to 80 never stabilized. Dealership claims can't find anything wrong. I have almost been hit 10 times since December 2021 because of vehicle going into limp mode while driving this is very dangerous to be going 55 to 70 and vehicle drops speed back to 10 all of a sudden in traffic

• 08/01/2017· ELECTRICAL SYSTEM

  ON MORE THAN ONE OCCASION I HAVE ALMOST HAD A COLLISION BECAUSE THE OTHER DRIVER WAS COMING INTO MY LANE AND I HONKED MY HORN, BUT IT ISN'T LOUD ENOUGH TO BE HEARD. APPARENTLY THIS HAS BEEN AN ISSUE WITH THE SONATA SINCE 2011.

• 07/29/2020· ENGINE

  AT AROUND 104K MILES THE ENGINE BEGINS KNOCKING AND HEAVILY VIBRATING. TIME TO TIME THE CARE WILL NOT START AND SAY "CHECK HYBRID BATTERY" AND I HAVE TO LEAVE IT OFF FOR ABOUT 10 MINS BEFORE IT STARTS WORKING AGAIN.

• 07/28/2022· ELECTRICAL SYSTEM,ENGINE

  The car requires a quart of oil every 1 to two weeks. Brought it to multiple dealerships and was never given a reason why. Car was making knocking noises anytime driven at 45 or below and sometimes higher. We believe it had to be about the recall Hyundai has advised us about multiple times. We brought it to them on Friday July 22nd. They updated the Hybrid system and we left. Driving the car to work July 27th and the car went into “limp” mode and stated that there was a issue with the hybrid engine and to shut the car off immediately. I was able to pull the car off the road and turn it off. The engine light constantly blinked when the error happened. When I shut the car off and turned it back on, it the same hybrid error shows up on the screen again. We had to have it towed to the same dealership we went to the previous day. They have to diagnose the issue but it might take weeks because they have one hybrid tech.

• 07/27/2022· UNKNOWN OR OTHER

  There is a recall outstanding that for some reason isn't associated with my car's VIN so the manufacture Hyundai is refusing to pay or make repairs. They even suggested that I buy a part that should fix the problem, after paying $246.75 for the part; the problem remained. The recall number is 16-01-067 for 2016 SONATA (LF) and SONATA HYBRID (LF-HEV); my car is a 2016 Sonata Hybrid. SUBJECT: PANORAMIC SUNROOF WIND DEFLECTOR PLATE REPAIR (RECALL 152) Description: Certain 2015 and 2016 model year Hyundai Sonatas and 2016 Sonata Hybrids come equipped with an optional panoramic sunroof. The sunroof assembly incorporates a wind deflector to help reduce wind noise in the passenger compartment when the sunroof is open. If the wind deflector becomes partially detached from its mounting bracket while the sunroof is open, the deflector can interfere with the closing of the moveable sunroof panel. In some cases this interference can result in the sunroof panel detaching from its mounting tabs. If the sunroof panel detaches while the vehicle is in motion, the panel could become an obstacle to other drivers, increasing the risk of a crash. The wind deflector on my car detached a year ago and after several requests to fix the detached deflector the dealership hasn't and refuses to recognize the recall. Is there a way to help get my car's VIN appropriated associated to this recall so if can be fixed?

• 07/26/2016· EXTERIOR LIGHTING

  MY CAR HAS BEEN IN MOTION AT NIGHTTIME WITH THE HEAD LIGHTS ON, WHILE DRIVING AT 55 TO 75 MPH THE LIGHT IS SPREAD UP ON MY SIDES INSTEAD OF BEING DIRECTLY IN FRONT WHERE THE FOCAL POINT IS NEEDED THE MOST. I HAVE TAKEN THIS UNIT BACK TO DEALERSHIP SEVERAL TIMES AND STILL THE ISSUE IS NOT RESOLVED, I AM TOLD ITS A PROBLEM WITH THE DESIGN. I TRAVEL MOSTLY ON INTERSTATES AND HAVE 20/20 VISION. MY PREVIOUS CARS LIGHTS DID MAKE MY PATH KNOWN TO ME, WITH THIS CAR, I AM SEEING DEFUSED LIGHT AND IT SCARES ME. I'VE MADE IT KNOWN TO MY LAWYER THAT IF I HAVE A WRECK AT HIGH SPEEDS, THEN AN INVESTIGATION OF THIS MAKE AND LINE OF CARS SHOULD BE LOOKED INTO. AM I IN A CAR THAT IS WAITING TO HAVE AN ACCIDENT? OTHERWISE, I LOVE THIS CAR.

• 07/21/2023· UNKNOWN OR OTHER

  I was driving to work and suddenly my car gives me signal hybrid system alert turn off the engine and completely shut down on me as I was in the freeway. Thankful I made to safe area. I had it tow to the dealership and they are mentioning to me that they are not sure if is Power train module but they want charge me $1391. They say is not guaranteed that’s going to fix the issue the service advisor mentioned he could be the transmission or the engine. I’m just so overwhelmed because me taking there I thought they have everything figure it out. Communication with them is really hard to get through them they always giving me the round arounds. Please help

• 07/20/2017· FORWARD COLLISION AVOIDANCE

  TL* THE CONTACT OWNS A 2016 HYUNDAI SONATA HYBRID. WHILE DRIVING 65 MPH, THE ANTI-COLLISION SYSTEM ACTIVATED WITHOUT ANY OBSTACLES NEAR THE VEHICLE. AN ALARM SOUNDED, AN INDICATOR ON THE INSTRUMENT PANEL DISPLAYED, AND THE BRAKES ENGAGED INDEPENDENTLY. THE FAILURE RECURRED ONCE MORE. THE VEHICLE WAS TAKEN TO BOUCHER HYUNDAI OF JANESVILLE (2009 MILTON AVE, JANESVILLE, WI 53545), BUT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ADVISED THE CONTACT TO TAKE THE VEHICLE BACK TO THE DEALER. THE APPROXIMATE FAILURE MILEAGE WAS 17,000. UPDATED 09/01/17*LJ *JS

• 07/19/2024· VISIBILITY

  The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the driver's side sunroof detached. The contact stated that the sunroof was caught up on the netting in front of the sunroof. The contact stated that the tracks were fractured. There were no warning lights illuminated. The local dealer was contacted but the vehicle was not diagnosed or repaired. The manufacturer was contacted, and the contact was informed that the repair was not covered under NHTSA Campaign Number: 16V726000 (Visibility). The approximate failure mileage was 103,000.

• 07/18/2020· ENGINE

  DESPITE IGNITION BEING TURNED OFF, GASOLINE ENGINE CONTINUED TO RUN. VEHICLE WAS STATIONARY IN A GARAGE AFTER BEING DRIVEN 1/2 MILE ON A VERY HOT DAY.

• 07/17/2026· ENGINE,LANE DEPARTURE

  EGR needs to be replaced as this is a major engine issue

• 07/11/2017· STRUCTURE

  ON JULY 10TH, 2017 AROUND 6:30 PM PST; WHILE DRIVING ON HIGHWAY 5 WEST AROUND TRACY, CA, THE PANORAMIC SUNROOF SHATTERED WITH A VERY LOUD NOISE. GLASS PIECES SCATTERED ALL OVER. REMAINING PIECE OF THE GLASS AROUND THE ROOF IS CLEARLY VISIBLE RAISED OUTWARD (CONVEX SHAPED) AS IT BLEW UP. EVIDENTLY THERE HAS BEEN SIMILAR INCIDENTS/COMPLAINTS. HYUNDAI MOTORS MUST NOT HAVE SOLD THIS CAR TO US AS THEY KNEW ABOUT THIS PROBLEM WITH THEIR CARS. MY FAMILY COULD HAVE GOT INTO SERIOUS ACCIDENT. I AM STILL SHAKEN UP AS A RESULT OF THIS INCIDENT.