Electrical System Problems of Hyundai Sonata Hybrid - part 1

The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway and the message "warning - do not attempt to restart" was displayed. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure the engine wiring harness. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer and was diagnosed as a failure with the engine wiring harness. The vehicle was not repaired. The vehicle had been back to the dealer several times. Recently the contact was informed that the wiring harness was soy-based insulated, and rodents were causing damages to the wiring harness due to the smell. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 80,000. The VIN was not available.

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The contact owns a 2015 Hyundai Sonata Hybrid. The contact took the vehicle to the dealer to be repaired under NHTSA campaign number: 23v651000 (service brakes, hydraulic) and manufacturer recalls: 964 (auxiliary canister installation), 966 (engine monitoring module, ecu software update), and 994 (hybrid safety fuse). The contact stated that after the repairs were completed, while attempting to start the vehicle at the dealer, the vehicle failed to start. The vehicle remained at the dealer who was unable to determine the cause of the failure. The vehicle had not been repaired. The manufacturer was made aware of the failure and confirmed that the vehicle was not covered under warranty for any further repairs. The failure mileage was 170,000.

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The contact owns a 2021 Hyundai Sonata Hybrid. The contact stated that the key fob was inoperable and after using the key to manually open the door. The contact stated that the vehicle failed to start while pressing the start/stop button. The vehicle was towed to the local dealer, but the cause of the failure was not determined. The contact was advised that when the failure occurred, to start the vehicle, the battery reset button should be pressed before pressing the start/stop button. The manufacturer was not contacted regarding the failure. The failure mileage was 24,000.

See all problems of the 2021 Hyundai Sonata Hybrid 🔎.

The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated while driving 60 mph and taking an exit, the vehicle stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed that the power relay assembly and battery needed to be replaced. The vehicle was repaired, but the failure recurred. The contact stated that the vehicle started but failed to move. The contact stated that the failure was related to TSB number: 20-01-003h. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 142,000.

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The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that while driving at approximately 60 mph, the brake pedal was depressed and failed to respond. The "stop car, check brakes" message was displayed. The abs and traction control warning lights were illuminated. The contact pulled over and turned off the vehicle, and stated that after restarting the vehicle, the warning lights were no longer illuminated. The vehicle was taken to a local dealer where it was diagnosed and serviced under NHTSA campaign number: 20v746000 (engine) and 21v749000 (exterior lighting, electrical system). The vehicle was repaired; however, the failure reoccurred intermittently. The vehicle was then taken to homestead Hyundai (111 s homestead blvd, homestead, FL 33030) where it was diagnosed that the power brake booster and rear wheel speed sensors needed to be replaced. The power brake booster was replaced; however, the failure reoccurred. The vehicle was then taken back to the dealer, and the wheel speed sensors were replaced. The manufacturer was not made aware of the failure. The approximate failure mileage was 130,000.

The contact owns a 2016 Hyundai Sonata Hybrid. The contact received notification of NHTSA campaign number: 21v749000 (exterior lighting, electrical system) however, the part to do the recall repair was not yet available. The contact stated that the vehicle was unable to start. The vehicle was towed to the dealer; however, the vehicle was not diagnosed nor repaired and remained at the dealer. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 110,000. Parts distribution disconnect.

The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while his daughter was driving approximately 65 mph, the vehicle shifted into limp mode with several unknown warning lights illuminated. The vehicle was towed to the dealer and several dtc codes were cleared and the accelerator pedal assembly was replaced. Shortly after receiving the repair the failure reoccurred and the vehicle was towed to the dealer another time. The dealer diagnosed the vehicle and determined that max cylinder #7 had failed causing a knocking in the engine. The vehicle had not been repaired. The dealer attempted to repair the vehicle under NHTSA campaign number: 14v252000 (electrical system, exterior lighting, vehicle speed control, electronic stability control) however, the VIN was not included and the repair was denied. The manufacturer was informed of the failure and confirmed that the VIN was not included. The approximate failure mileage was 91,679.

The contact owns a 2017 Hyundai Sonata Hybrid. The contact received a recall notification for NHTSA campaign number: 21v749000 (exterior lighting, electrical system) however, the dealer informed the contact that they would be able to perform the recall repair in approximately five months. The manufacturer was notified of the issue and advised the contact that they could assist with scheduling an earlier appointment with another dealer who was 40 miles away from the contact's residence. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the check engine and abs warning lights illuminated, and the "check hev system" message was displayed. The vehicle then lost motive power and was not able to restart. The vehicle was towed to the dealer on two separate occasions. The dealer replaced the engine coil and battery; however, the failure recurred. The vehicle was taken back to the dealer and the dealer performed NHTSA campaign number: 21v749000 (exterior lightning, electrical system) however, the failure recurred. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 75,000.

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated while driving at various speeds, a message advising to pull over and to park the vehicle was displayed. The vehicle was taken to the dealer for diagnostic testing several times. The dealer replaced the hecu and the battery inverter assembly; however, the failure persisted. Additionally, the contact stated that while his son was driving at an undisclosed speed, the contact's son noticed that there was white smoke coming from the rear middle seat of the vehicle. An unknown warning light was illuminated. The contact's son pulled to the side of the road and turned off the vehicle. The vehicle failed to restart and was towed to the dealer, where it was diagnosed that the hybrid battery pack had failed, causing the hybrid battery to melt. The dealer determined that the hybrid battery pack needed to be replaced. The vehicle was not repaired. The contact related the failure to Hyundai campaign number: 994. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 37,000.

While driving the car on the freeway, it will jerk forward and then shortly after lose power. The car shows the battery as being barely charged. I pull over (luckily haven't been killed yet) on the side of the freeway. Let the car sit for a few minutes, restart it and the battery is half full and the car is driveable. I've read online that this is a common issue with 2012 Hyundai Sonata Hybrids. I've taken my car to a Hyundai dealership twice, and they can't find anything wrong, diagnostics show its fine. The second time I took it in they replaced the battery located in my trunk for $485. That did nothing, as the car is still randomly shutting off, and most times in the most dangerous areas of the road. I don't think Hyundai will do anything about this until numerous people are killed. Forgot to mention that sometimes when it shuts down the check oil light comes on. I've had the oil replaced and the oil sensor, so thats not the issue.

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I was driving 20 mph straight down a flat residental street. A loud dash alarm sounded in my 2014 Hyundai sonada hybrid. The dash displayed "hybrid system warning, safely stop and do not drive" . Below the warning a yellow caution triangle displayed. I attempted to give the vehicle gas, so I could pull to the side of the road, but the engine acted like it had no power. A blinking green "ready" light was displayed. The eco guide display was moving up and down from the top to bottom. I took my foot off the gas pedal and began braking. The brakes felt mushy and the vehicle was not stopping. Within a few seconds the vehicle shook and was the engine was revving up and down but like it was out of gear. After approximately 10-15 seconds, I lost the power steering and the it was almost impossible to turn the steering wheel. I again tried braking but the brakes just felt mushy and were not stopping the vehicle. I continued coasting down the road and eventually used the emergency brake to stop the vehicle. Once the vehicle was stopped I shut it off and attempted to started the vehicle again. The green "ready" light displayed on the dash as well as the warning lights. The vehicle would turn on but not start again. I put the vehicle in neutral and had several people push me to the curbside. The brakes were very mushy and almost non-existent. I again used the emergency brake to stop it. I notified my local Hyundai dealer and advised I would be towing the vehicle to them. I had just came off the freeway and had this happened a few minutes earlier, I would not have been able to get to the shoulder of the freeway. I believe this issue could have caused serious injury or death. It was literally terrifying to lose control of the vehicle the way this occurred. There was no prior warning of an issue and not enough time to react once the warning symbol was displayed.

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On 5/11 my wife was driving when she heard a clicking sound. She was not far from the dealership and decided to drive the car in to get looked at. As she got close to the dealership the vehicle started to smoke. She pulled over to a safe location where she could get out and as she was pulling over the vehicle started to flame. She immediately grabbed the dog and jumped out of the car and called 911. Withinjust a couple minutes of exiting the vehicle it was fully engulfed in flames and exploded.

After being jumped once and running properly the car no longer has any kind of power. The rear battery is working fine. My mechanic had also told me that the wheels had a certain type of spring like mechanism that was ready to shoot off the car and that the car needs a very expensive large piece of plastic to regulate airflow if it is going to pass inspection. The vehicle has not been in accidents and nothing out of the ordinary has happened to it to cause these things.

See all problems of the 2011 Hyundai Sonata Hybrid 🔎.

While vehicle in motion, car just stop oversudan with a spoken message: " hybrid cells vehicle is in danger. Car will stop"and after this messgae, car stalls with no control on the breaks and steringwheel.

Yesterday the car drove fine untill about an hour before I went home. Then it started with the bumping/jerking when switching from electric to gas. Worse than it has ever been. Then the revving started, more than usual, and wouldn't accelerate. Then it was like the throttle stuck. Got the revving noice, but the eco wasn't burried at red, for about 1/4 mile before I was able to pull over into a parking lot. Shut off the car. Restarted and drove 1 mile to home. Revved a few times in that period.

While driving car system warning came on to" safely stop and do not drive". Was able to pull over and stop car. Could not restart it. Had it towed then changed battery which was low. Tried to restart and did not turn on until 3rd time starting. Let engine run for about 10 min and warning came back on.

My vehicle "check charging system" warning came upon the start up of the hybrid in the morning 12/31/2018, going to work. This was an issue on a heavy precipitous day in past. However there was not heavy rain, I turned the vehicle back off. It turned on without the warning which 1st appeared in front area and is audible. It started as I approached a stop sign. I live about 6 minutes away from work. The battery life is visible and it was not changed from mid point which has always been same. The tank had gas, no issue, and I drove it to work. I assumed with the car turned off for the 6hour shift I had, that it would possibly be relieved. I started the car to now drive to the store for quick grocery essentials. Within a 15 min time frame from work, store quick shopping there, and home again. The warning came back on. As I braked, or came to a stop for lights the warning would stop. As I pushed on gas pedal it would start. As I was approaching an intersection with traffic lights, I prepared to stop but as I got closer the car would not stop anymore than it had (which was significant) but not stopping, as I noticed the distance, my foot on the brake all the way I heard the vehicle (closing song) which is supposed to be heard when you turn the vehicle off. I looked at the dash in front of me which went blank all across the board and I braced for impact. My vehicle came to a stop because the collision occurred with this malfunction and my car hit the car in front of me. Physically we are ok. I am still paying for this vehicle and it is powerless by the curb at my residence until I can afford to have a tow truck pick it up. The dealership said no warranty, no assistance by them. I have a claim with Hyundai which is slow. You tube has so many vehicles from 2011 and recent models that are reporting same warning issues. I have a recording of it from that day.

Major failure occurred. I was driving my car when I heard sharp bells ringing from the car dash. Check hybrid systems lights illuminated on dash. The car was in motion when it just stopped. I had no time to pull to the side of the road. I turned it off and on again. I was in the center of the road and it would not move. Good samaritan pushed my car to side of the road. The check brakes light came on. Then the car would not turn on at all. The car would not recognize the key pad light came on. Locks would not operate. The window was stuck in the open position. The internal car lights were on and would not go off. The key pad could not lock/unlock the car. Luckily this happened on a side road. 1 mile earlier I was on a freeway that had no shoulder. If it had happened there, it could have been catastrophic. Numerous systems failed. I took it to they dealer. They had to wait for the hybrid specialist. He said the transmission fluid was very dirty and ordered a new transmission. My question, why would check hybrid systems come on and so much electrical failure if it was the transmission. I have read in forums that this has happened to several other hybrid sonata owners. Even after the transmission repaired, I still feel very unsafe in the car now. If it had happened just 1 mile earlier, my car stopping immediately on the freeway with no shoulder could have caused a major accident and been life-threatening.

See all problems of the 2013 Hyundai Sonata Hybrid 🔎.

While car is in motion, on highway or anywhere at anytime, the check brake warning light comes on display screen, with an beeping alarm, then the brakes drop to floor barely stopping the vehicle with a grudging noise. I went to the dealer, they gave me the option to replace the abs system but was not sure of the exact problem and tried to sell me a newer car. This company already has lots of recalls and has put many people's lives in danger. This issue is happening to many other vehicles the same as mine and they are not safe for anyone.

My 2011 Sonata Hybrid has smoke coming out of the dash and from under the dash and you can smell wires burning. It's all factory nothing has been done to it. It does it when you start it up and it does it off and on while driving.

After I exited the freeway while traveling to my mothers on thanksgiving day I was stopped at a light to turn left onto a street and when I tried to go the car would not move I had to push the gas peddle all the way down and when it finally went it jumped/jerked really bad which almost caused me to hit the car in front of me and after that it was going really slow. 2 days prior the car was lagging while slowing down to break seemed like the system wasn't reading that I want to slow down and stop which again almost caused me to have an accident. This car is a safety hazard and I only have 61,000 miles and I only had the car for 9 months. I was told it was the transmission and the car is still in the shop trying to figure out what is wrong.

Was driving about 25 mph and it sent warning lights and stuttered and died in front of railroad tracks. Very lucky it didn't die on the tracks.

Was backing out of the driveway and the check brake warning started going off. The brake pedal went to the floor. The whole system of the car shut down. My hydraulic unit failed and they will not cover it under warranty. Thank god I wasn't driving when this happened.

Tl- the contact leasing a 2016 Hyundai Sonata Hybrid. The contact stated that when attempted to drive the vehicle, it failed to start. The triangle warning indicator light illuminated. The contact was able to restart the vehicle and was driving to her residence. The vehicle was not take to a dealer or an independent mechanic for a 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. Aw.

We have had multiple issues with the car accelerating. The vehicle will not respond immediately when pressing the gas pedal. We have had the car worked on by Hyundai 12-15 different times and it continues to have the same issue time and time again. We do not feel safe in the vehicle. The last time that we had the issue was in October of this year and we have not been able to drive the vehicle since that time. Hyundai will not help us get out of the vehicle even though it has had the safety concerns. Recently we found out that the vehicle also had a recall on the air bag and they did not have a fix for the issue. We have come close to wrecking the vehicle multiple times. Thankfully that has not happened or we may have not even had an airbag to protect us. There has been close to $25000 worth of work done to the vehicle and they have never been able to fix the issue properly. We do not trust the vehicle and will not put our family at risk any longer. We need help to get out of the vehicle financially as we have a vehicle that is not safe to drive. It is not safe for us or anyone else on the road.

Driving in rush hour traffic about 25 mph and car stuttered warning light came on and said to pull over, but everything shut down before I could. I blocked traffic for 6 hours. Did not get into an accident, but was very close to one. Everything shut down including hazard lights. I was unable to exit vehicle due to heavy traffic.

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.

First incident, Sunday, September 9, 2018. While driving, car suddenly flashed warning lights, with message pertaining to the battery. Car decelerated extremely rapidly and became harder to steer. Pulled car over out of street as it lost power. It stopped. Lights remained on. Turned car off and then turned it back on. It cranked up and could be driven as if the incident never happened. There were no warning lights or warning message when the car was restarted. Second incident, Monday, September 10, 2018. While driving the car to the dealership for diagnosis of the problem, the car suddenly lost power again, the warning lights flashed again, and again it became hard to steer. This time driver was not able to pull the car over; it stopped in the street. Driver turned the car off, then turned it back on and drove to the nearest service station. A tow truck was called and the vehicle was towed to the dealership. The dealership stated the vehicle did not register any code that they could detect. They had a technician drive it from work to home each day and the vehicle never gave any problem. They could not find any problem at all with the vehicle that required service or repair. Vehicle was picked up on Saturday, September 16, 2018. The dealership waived the diagnostic fee since they were not able to diagnosis a problem. The vehicle has been traded-in. The issue was reported to Hyundai motor corporation.

Tl the contact owns a 2012 Hyundai Sonata Hybrid. The contact stated that the vehicle made an abnormal noise while driving approximately 55 mph. In addition, the charging system warning indicator illuminated. The vehicle was towed to autonation Hyundai mall of georgia (located at 3445 buford dr, buford, GA) where it was diagnosed that the compressor failed and needed to be replaced. The manufacturer was notified of the failure. The failure mileage was 70,000.

On this past labor day, which was 9/3/2018, I pulled into a gas station to refuel my car. Shut off car and had key fob with me. Pumped the fuel and got back in the car. Nothing. Car was inoperable. Pressed the start button, pressed the brakes, shifted from drive to neutral and back, pressed the brake and the start button again and nothing. Dashboard lit up like a christmas tree with the key fob light on, the check engine light on, etc. Called bluelink. They transferred me to a "phone prompt" switchboard. Problem is the phone screen would not operate as it was frozen as well. Called again, lady stayed on the phone with me and transferred me. Then when transferred she was about to hang up with the message read they were closed. Wtf? I am supposed to have roadside assistance. Rep from bluelink told me to tow the car. There was nothing she could do as it was a holiday. Honestly, I was furious. I exited the car again and shut the door. Had the fob with me. Got back in and again, nothing. Could not even turn the steering wheel. Got out again and this time checked fuses, and turned switch off then on for all fuses. Nothing again. Repeated the steps as typed earlier, and nothing. About 20 minutes later I tried it again and it started. I have had my communications center replaced once already. Android auto worked when it felt like it. My sensors for blind spots turn off at will. My rear view camera works but the sensors don't always pick up oncoming cars or pedestrians. The car is going back tomorrow yet again. This time I am pushing for lemon law. The electrical system is critical to the functionality of the car. I love the mileage I get from this car and everything else is great, but I am not running the risk of driving on the interstate and the electronic system just decides to go on a vacation!.

I have had my car for a couple years. Randomly, I got an alert while keeping regular maintenacnce on my car saying "check brakes" and "hybrid system warning". I brought it to the dealership and they said the "hecu, hydraulic electronic control unit (hecu)" is faulty. This is an issue with the Hyundai genesis, but not an active recall on the 2013 Sonata Hybrid. However, I believe my model of car is affected by this issue, as well. The dealership said they could not do anything for me because there is not active recall, so I am reaching out to you to report this. I hope an investigation can take place for this because I know I am not the only one affected by this issue at no fault of my own. Thank you so much.

While I was driving the car stopped and wouldn't start, all the lights came on,message on dashboard read "hybrid system error" "check charging system" than everything went off, no power, no emergency lights, this in the middle of a busy street. Luckily a sheriff's was nearby and rerouted cars. Very scary. Seems I am not the only one that has a similar experience. This happened when I was going to work at 7:45am at s very busy intersection. Car is at mechanic's shop.

Tl- the contact owns a 2011 Hyundai Sonata Hybrid. The contact stated that while driving with two passeners and a dog, the steering wheel had become tight as well as there was an abnormal vibration while driving a highway rate of speed at 70 mph. The contact had to decelerate to slow down the vehicle as the abnormal condition continued with the steering wheel vibration affecting the suspension. The contact was uncertain when an eps failure may progress with no warning indicator at any rate of speed. The dealer and an independent mechanic have not yet inspected and diagnosed the vehicle. The contact had not yet address and was not aware of NHTSA campaign numbers: 17v152000 (seatbelts) and 18v137000 (seat belts and air bags). The manufacturer was notified of the failure and the contact was to also address the recall repairs. The approximate failure mileage was 66,000. Dyd.

Tl- the contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving at 65 mph, the sound of a loud pop was coming from underneath the vehicle front passenger side. The contact noticed smoke start emitted from the front passenger side floor panel. There was no warning light illuminated. The contact coasted to the side of the road and was able to exit the vehicle where he noticed flame was coming from underneath the center of the vehicle and then it burst into flame. The fire department extinguish the fire. The fire department filed a report. The vehicle was towed to a tow lot. The vehicle was not taken to a dealer or an independent mechanic for a diagnostic testing of the failure. The vehicle was not repaired. The manufacturer was notified of the failure but did not offer further assistance. The approximate failure mileage was 35,000. The VIN was not available. Aw.