2017 HYUNDAI SONATA Fuel/propulsion System Problems

To whom it may concern, I have own my vehicle since Jan 2018, which was purchased from the dealership's owner w/less than 10k miles. Maintenance has been performed iaw Hyundai's recommended schedule. However, yesterday, I was informed that my vehicle needed a new engine and other replacements totaling $13,934.89. This is OUTRAGEOUS. How can a well kept vehicle w/106445 miles, need such replacements? Thus your assistance will be greatly appreciated.

My 2017 Hyundai Sonata Limited check engine light came on at approximately 103,000 miles of use. This happened last week. The code it was pointing to was a faulty Fuel Pressure Sensor. Could also be combined with faulty fuel pump, but the primary code indicates the sensor. I will be taking it in to the Hyundai dealership shortly. The main reason I’m reporting this is because of my previous experience owning a 2011 Hyundai Santa Fe that had to have the engine replaced three times all under warranty. There ended up being a class action lawsuit because of several owners experiencing the same proglem. While this may not be the same case, I am Leary of engine problems like this. I take very good care of my cars with regular maintenance, so I’m reporting this just in case others are experiencing the same problem.

My Hyundai consumes oil and I have to put oil in it every two weeks! Also my ignition coils has had to be changed 4 times. Also check engine light just came on code saying catalytic converter or oxygen sensor changed oxygen sensor a couple months ago. I purchased it brand new and as soon as I got over 100,000 miles nothing has been going good since then please help also my paint on the top of the car is starting to peel. Will never buy a Hyundai again.

Hello! I bought a car in the USA, I live in another country. Errors that appear in the car are similar to these: [XXX] Еrror appears then, the cogd I give more gas and let go of the pedal. When the engine is heated at different speeds. The scanner showed these errors: P1326 Ignition Control Module - Combustion Quality Input Signal; U0293 Lost Communication With Hybrid Powertrain Control Module; U1004; B2AAA. But the electricians do not know what the reason is and no one can help. So I go for one year with an error ((( Please help! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I have had many problems with my car since 1st day of purchase timing belt oilpans valve cover gasket burning excessive oil caliper brake hose last few events I have experienced my ABS light coming on in the car stop moving while am in traffic very dangerous I work for the hospice reserve one day while driving the car started shaking compulsive and the check engine light came on I was informed oil was leaking onto my spark plug and engine was going out I experienced extreme hot air inside the car coming out vents back firing etc my warranty in finical company seems to be ripping me off more concerned about money I have reported all these problems to them the past 13-14 months i was suppose to hear back from lisa warranty about this problem this past week no contact I reached out to Hyundai Corporation after visiting local dealership on Bedford automile a service rep by the name of aaron basically told me they cannot help me car will need a engine

I was driving down the freeway when my engine made a loud knocking noise, the noise got worse as the RPMs increased. The check engine light began to flash and I lost power, the vehicle will not exceed 60mph and vibrates when moving down the road. I believe this issue is widely know about and should be addressed and forced into a recall. I have maintained the vehicle and should not be responsible for a manufacturing error.

While driving on a highway at ~60 mph, the check engine light came on (plus other indicator lights) and the car immediately dropped to ~45 mph. ~20 seconds later, while trying to pull into a school parking lot, the hybrid system fault warning came on and the car dropped to ~5-10 mph and then became extremely difficult to control. The car was towed ~80 miles to my home dealership and it was diagnosed as a partially blocked EGR tube. ~1 month later, on the next longer drive I had to make (all other drives were short distances), ~70 miles into the drive, the car started making a knocking sound and then suffered the same failure under the same kind of conditions. This was diagnosed as a failed knock sensor. One week later I tried to drive it a long distance to see if the problem would happen again (but closer to home) and while traveling on an interstate highway the same issue occurred. This time it was diagnosed as oil in the wiring assembly for the just replaced knock sensor. The dealership tried to give me the car back but I demanded that they do a long test drive. It took 4 days to get them to do what I asked and then they had it break down on them in the same way. I'm not 3+ weeks after that and still don't have the car back (now they're planning to replace the EGR assembly and intake manifold). Each breakdown has thrown the P1326 trouble code but Hyundai refuses to admit that the issue may be the engine itself (related to the recall). It took until the 3rd breakdown and a lot of demands to get a loaner vehicle. I don't know if this is the known engine issue, something else or new but don't feel that Hyundai is taking it seriously. If nothing else, the programming that was added to put the car in safe mode and prevent fires is too aggressive and in each case has made the car undrivable in less than 1 mile. I have gotten lucky in all cases that a safe place to stop was nearby but it is not safe to drive in many areas due to lack of safe pull off location

During travel on highway (~60 MPH), the vehicle suddenly lost power and the engine stopped functioning properly. The effect of the problem was that the vehicle began to 'buck' - as if the engine was having significant trouble running continuously. The engine light then illuminated solidly (not blinking). The vehicle slowed from lack of power and I was forced to move to the right lane/break-down lane through high speed highway traffic (NJ). I was able to travel /limp a few miles slowly to the next exit and get off the highway to a gas station. The engine ceased operation upon arrival to the gas station. The vehicle was towed to a mechanic who diagnosed the issue as engine failure. The vehicle was towed to a Hyundai dealership for diagnosis by the manufacturer (Denville, NJ). The diagnosis was 'engine failure'. No conditions existed prior to this event. In the recent past, the spark plugs and ignition coils were replaced. The vehicle had ~140,000 miles but it was used every day and was maintained very well during its life. I am the original owner. No insurance claim has been filed.

I'm reporting the growing concern of my engine having rod knock or seizing . It has been burning excessive oil since I bought it at 80k miles. I have reached out to hyundai and they have denied me any help as the vehicle is past their 10y/100k mile warranty. Although my vehicle has extended warranty up to 150k miles for engine seize or rod bearing failure through them. There's no warning lamp but the piston slap noise is getting louder, I'm scared this problem might leave my family and I stranded in the middle of the night. Also scared that it can catch on fire due to almost running with no oil. I have to do my oil change every 1200 miles, instead of 3000. corporate hyundai has denied any type of assistance, I went to a dealer to get it checked out and they insist without proof of oil changes there's nothing they can do, i do them myself on all my cars and I'm VERY on top of my maintenance. I have scheduled an appointment 02/07/2024 to try and diagnose the growing issues with the engine itself.

High pressure fuel pump defective. Code p016b. Dealer replaced high pressure pump, gasket, bolt. Sonata has 43265 miles and 80 months.

The vehicle has twice been disabled while driving due to “lost communication with hybrid module powertrain control module.” This breakdown is a significant safety hazard as the car loses power and coasts to a stop without any warning. The second time was on a 65 mph highway. Neither time has had any warning before the malfunction lights appeared. The first time occurred on 10/7, and the vehicle was towed to the dealership. Nothing was done besides clearing the trouble codes and test driving with the car, which returned at the end of October—the second time the breakdown occurred about a month later on 12/3. This second time, I removed the code myself on the roadside so as not to be in more danger, and I am currently awaiting an update from the dealership’s service department on their next steps after initially being told to just have it towed in again. Losing power without notice is incredibly concerning. I want to report this safety issue and determine my next steps to resolve it, as this has dramatically impacted my trust in the vehicle and its safety.

Steering wheel has electrical issue and only works if you turn it to the left. Also check engine light comes on for emissions problem and oil burning faster than usual as well as the fuel.

The oil is leaking into the engine. My catalytic converter has failed as a result of the oil consumption issue.

This is my second report and no one helped me. I have a safety issue and I am driving an unsafe car Hyundia refuses to help me.

Car is burning an excessive amount of oil. After getting the oil changed I needed to add additional oil. Car is driving sluggish and won't pick up speed. In 2023 the car bucked, check engine light came on and the car failed to drive over 60mph. I took to Firestone to be repaired and they fixed the knock sensor. After a few weeks, the car bucked, check engine light came on and car would not drive over 60, they also informed me the car used too much oil since I drove it last, there was a service bulletin for the oil consumption and to take to Hyundai. Took to dealer for repair, they said engine consumption is fine. After a few days cars started becoming sluggish not picking up speed. I checked the oil - it was empty.

The check engine light started flashing Check hybrid system turn off engine massage appeared The gas pedal doesnt work and the car jumps The problem happened 4 times so far with me The same problem happened about 5 times with my uncle that drives 2016 sonata hybrid

Mileage: 157,187

Car completely lost all power train systems while in motion after repair at dealership for HSG. Car was able to be restarted after shifting into park after complete stop. All instructions in user manual for restarting vehicle while in motion were followed but not successful. The vehicle died again pulling into dealership and the tech began diagnosis.

Complete loss of power. Car shut down at freeway speeds. Dealership runs codes and they cannot find out what specifically is causing issue. Issue cannot be replicated as it only happens a few times a year and has existed since shortly after purchase of the car brand new. There is articles all over the internet people having similar experiences. This car is NOT safe. Hyundai does not communicate hybrid system codes through their telematics system so there is no paper trail. The car also clears the codes out after 3 reboots following the check hybrid system codes. Dealer has reported car shut down due to voltage issues-not able to determine the reason since after reboot the car drives normally.

The car lost all acceleration and my check hybrid system light came on. The car would not handle safely to drive. After 3 resets the car finally accelerated as normal. The codes clear themselves before the dealer can check them to give a specific issue. It is not giving the diagnosis for the hybrid issue in the diagnostic log.

Car was bought in march of 2022 and has had major oil problems since . The oil needs to be changed / filled every 2 weeks . Was taken to a proper mechanic shop where it was stated the car is consuming large amounts of oil and it’s burning leaving the oil level bone dry .mechanic stated the oil most likely was leaving through the tail pipe / exhaust on a blue kinda of smoke .

Engine intermittingly stalls while driving. Unsafe/dangerous!

It's knock sensor issue code was showing since 85000 mileage, dealer just got rid of the code and said can drive safely. Then again at 101000 mileage knock sensor code and Hyundai dealer said software is updated can drive safely. Also it's engine oil burning faster that we keep on topup oil all time. Then at after 108000 mileage my car started overheating, & it's engine seized. Now Hyundai don't want to fix such problems. I don't know maybe it get fixed, then catches fire on highway can cause death.

I work from home so I don't travel that much. A few months ago, my car was jerking when trying to accelerate. The engine light was flashing on and off. I took it on to the dealership and was told it was a computer update causing the problem. After leaving, the car was doing better, but not completely right as it was prior to the issue. I returned back to the dealership later to explain what else was going on. The car still Jenks on acceleration, but not as forceful. I was then told it is possibly my intake manifold and spark plugs. I plan to take my car back for the spark plugs, but I'm curious about the intake manifold. Either way, this is an issue for when I'm trying to accelerate after a stop and I have a long delay. It also does this on an incline. My car doesn't want to climb on an incline.

The Hyundai was started, feint knocking was heard. Progressed louder as vehicle accelerated, engine then stalled, check engine light and oil pressure light turned on and traction control disengaged as the vehicle erupted into a rolling blaze

The engine is stalling and shut off at a traffic light. Using oil on a weekly basis. Gas mileage is not efficient at all. No warning the oil pressure is low. The latch on trunk had to be replaced weeks after I purchased the car but I had to replace it cause it would not shut. And now there is a recall.

Recall on my 2017 Hyundai Sonata was repaired 9/13/2019, purchased the vehicle with financing on 7/16/2021. On 8/18/2021, had vehicle towed back to the dealership and explained the issue. Engine knocking, tire pressure and engine lights on, frequent stalling, turning off, smell of gas and something burning, loss of power to the engine, car could not accelerate to 60 MPH. The dealership had my car till 9/20/2021, power train warranty was denied and voided, no loaner car was given, was not offered any reimbursement for car rental by dealership and Hyundai corporate. Although car is included in Theta class action lawsuit. I was correct about issue with engine, but the dealership replaced engine with used parts. No later than five days after having my car back, the engine and tire pressure lights came back on, car is tugging, and the engine noise is louder. I don’t believe that they replaced the engine with OEM parts.

HAD OPEN RECALL ,, AN ECM UPDATE AND WILE HYUNDAI IN COLUMBIA CT. AND AFTER IT WAS DONE THE CAR WORKED FINE FOR ABOUT A WEEK , NOW I'M LACKING ACCELERATION FOR MILES PER GALLON HAS DECREASED 50% BURNING GAS QUICKLY PLUS IS BURNING ABOUT A QUART OF OIL A WEEK, BUT THERE'S NO CHECK ENGINE LIGHT, CHANGE THE SPARK PLUGS AND AIR FILTER STILL THE POWER HAS DECREASED 30%. I NOTICED THAT DECREASE IN POWER WHEN ENTERING ON TO A HIGHWAY AND I TRIED TO ACCELERATE INTO TRAFFIC BUT IT DID NOT HAVE ANY POWER AT FIRST UNTIL IT STARTED BUCKING AND THEN IT'S FINALLY GETTING SOME MOMENTUM. THE SPARK PLUGS WERE CHANGED BUT THE PROBLEM STILL PERSIST! STILL AT THIS TIME THE PROBLEM IS UNKNOWN TO ME

Mileage: 80,067

MY 2017 SONATA HAS STALLED WHILE IDLING IN DRIVE. THE CAR COMPLETELY STOPPED AT A RED LIGHT; RPMS DROPPED AND IT STOPPED. PRIOR TO THIS HAPPENING, I HAD COMPLAINED TO MY LOCAL DEALER THAT WHEN IDLING, IT HAS DROPPED IN RPMS AND FELT LIKE IT WANTED TO CUT OFF BUT DID NOT...UNTIL TODAY. AT THAT VISIT, I HAD THE FUEL SYSTEM SERVICED, AS THEY THOUGHT THAT MAYBE THIS WOULD HELP. THAT WAS APPROXIMATELY 2 WEEKS AGO AND NOW IT HAS COMPLETELY STOPPED AT A LIGHT. I AM TAKING THE CAR BACK IN AS I AM NOT CERTAIN WHAT ELSE IT COULD BE...MAYBE MASS FLOW SENSOR? I HAVE SEEN WHERE THE 2018 SONATA HAD A RECALL REGARDING HESITATION/STALLING ISSUES AND NOW I AM WONDERING IF THE 2017 HAS ISSUES AS WELL. I AM AFRAID TO DRIVE IT IN HEAVY TRAFFIC AS NOW IT MAY CUT OFF ON ME AND NOT START UP AGAIN.

Mileage: 61,600

MY CAR WON'T TURN ON WHEN I TURN THE IGNITION KEY. IT STAYS SILENT NO CLICK OR ANYTHING INDICATING ITS TRYING TO TURN ON. THE VEHICLE IS ALWAYS STATIONARY WHEN THIS HAPPENS. IT RANDOMLY DOES THIS AND RARELY IT TURNS ON WHEN I TURN THE IGNITION.

Mileage: 72,000

FOR SOME PERIOD OF TIME, NOW, I HAVE LOST ENGINE POWER, WHILE IN MOTION. IT HAPPENS SPORADICALLY WHEN I CANNOT PRESS THE GAS PEDAL FOR CONTINUOUS MOTION FORWARD. THIS HAS BEEN HAPPENING ON A HIGHWAY AS WELL AS CITY STREETS. IT PAUSES WHEN I PRESS THE GAS PEDAL AND THE DELAY IS MOMENTARY. LATELY WHEN STARTING THE CAR FOR THE FIRST TIME IN THE MORNING I HEAR CONTINUOUS KNOCKING UNTIL I DRIVE FOR SEVERAL MILES, THEN IT DISSIPATES.

Mileage: 17,000

TL* THE CONTACT OWNS A 2017 HYUNDAI SONATA. WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE SHUT DOWN WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE VEHICLE WAS OPERATING AS DESIGNED. THE FAILURE RECURRED WITH A LOUD NOISE AND THE VEHICLE WAS TAKEN BACK TO THE DEALER. THE CONTACT WAS GIVEN A LOANER VEHICLE. THE DEALER DIAGNOSED AND REPLACED THE FUEL PUMP. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROMISED TO HAVE AN AGENT CALL THE CONTACT. THE FAILURE MILEAGE WAS APPROXIMATELY 300. UPDATED 08/22/2017*JS

Mileage: 300