Defrost doesn-??t work because harness melted and blew a fuse

- Hillsborough , NC, USA

While driving my cars a light starting blinking and my engine light came on and the car lost power This has happened on at least 3 occasions and I had to pull over upon starting the car after a few hours all returned to normal I reported this to dealer and they could not find a problem

- Lafayette Hill, PA, USA

I took my vehicle into the dealership when it was under 12,000 miles for another issue and mentioned a problem with the headlight on the right fogging up with moisture. I was immediately told that this had to be seen with their eyes because light cost more than $1,000. It has continued for over 1 1/2 years. Early this month, I took a picture at night and in the morning. The service manager wanted to add another hoop; can you get a picture of the water in it? The water is droplets on the light, decreasing visibility on the road. Pictures are attached. There is one picture that shows the left headlight with no issue.

- Murphysboro, IL, USA

The AC Fan in my car quit working. Took it to a repair shop where I was told that the AC Blower Motor went bad. The blower motor was drawing too much amps and caused the blower motor fuse to melt into the wiring harness for the blower motor along with melting several other fuses nearby including the fuse box. The cost to repair this correctly fixing and addressing all parts damaged was $5000. Because my vehicle is out of warranty due to mileage I contacted Hyundai who stated that I had to go and pay another diagnostic fee at a Hyundai Dealership to have them look at it. They continued to tell me that the vehicle was out of warranty but would not assist in providing information to get the issue resolved at no cost to me.

- Cookeville, TN, USA

The contact owns a 2020 Hyundai Sonata. The contact stated that while her husband was driving 75 MPH, the brake warning light appeared on the instrument panel as the vehicle began to hesitate upon depression of the accelerator pedal. The contact stated that the vehicle decelerated to 20 MPH as her husband pulled to the side of the highway and turned off the vehicle. The contact called the dealer and was given suggestions on how to correct the failure; however, none of the options worked. After some time, her husband restarted the vehicle and the vehicle resumed normal operation. The next day, the contact stated that the brake light returned upon start of the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 19,000.

- Grand Rapids, MI, USA

I first begin having an issue with the idle speed. It would jump up to 1,500 RPM, which is twice the normal 750 RPM level It started almost from the very beginning when I purchased this car new in early 2020. I mentioned it at first oil change at dealer at 3,500 miles. I was told it was normal. In the beginning it would come and go. Sometimes not happening for weeks in-between episodes. Then it started to have the check engine light come on after it would happen and stay on. I took it back while light was still on and they kept the car for several days. Said it was the EPV valve and replaced it. Car operated fine for a few days then started up again. It also started to idle up and down from 1500 down to 500 in a rapid succession. I was able to get it to stop sometimes by turning engine off and them back on. Again I contacted dealership and took car back in. They gave me a loaner car and kept my car for over a month. This time they replaced the computer they told me. I did not have car for more than a week before it started doing it again. It has gradually gotten worse and happens more often now. It has also started to have the Forward Collision Avoidance warning come on in addition to check engine light as well. Just this week it actually just died on me while driving and forced me to pull to side of road. Turn off the engine and restart the engine. This happen 3 times in succession. Dealership does not seem to have any idea on what is going on and have been not very helpful. 3 week wait to get an appointment to bring in and no loaner cars available. This problem with the 2020 vehicle is very dangerous. It can idle up at anytime and car will lurch, requiring forceful brakeing. Car dying while driving and losing power as well.

- Rowlett, TX, USA

The contact owns a 2020 Hyundai Sonata. The contact stated while parking the vehicle and pressing the power button, the vehicle continued running. The contact was able to turn off the vehicle by repeatedly pressing the power button. The contact stated no warning light was illuminated. The vehicle was not taken to a local dealer. The manufacturer was not informed of the failure. The failure mileage was approximately 12,000.

- Laguna Hills, CA, USA

Driving, car started making a weird sound followed by a warning light on dashboard with dinging sound to correlate... car became difficult to gas, vehicle motion was lagging where I just knew I had to pull over Bc this car was going to literally stop began to slowly (Bc that-€™s all car would allow) to proceed forward and I was forced to come to a haunt as I pulled onto side of highway. I then could no longer move it. Turned car off for minute then returned to try to start again, car would not accelerate at all nor turn on fully.. I was forced to wait hour to get a tow... took to shop, no problem such was found, car started & ran again... this is 3 days later the car again continued the same exact pattern & I was unable to drive any further and forced to once again to get tow. This has to be something of bearings with engine, this car mode is not on list but IT certainly is an issue that I believe is related & should be rectified by Hyundai.

- Islip Terrace , NY, USA

The vehicle's fuel gauge (type C) does not accurately adjust for changes in the amount of gas in a timely manner. It normally takes 2-3 days for the gauge to move to full tank even though it is full. Same problem from 1/4 to 1/2 tank, etc. For example, I noticed the panel said I had 11 miles to empty on Friday. The gas gauge showed otherwise. I wasn't near my usual fill station, so I put 5 gallons of gas in the car. It is now Wednesday (5 days later). The gas gauge moved slightly yesterday to almost 1/4 tank, but the fuel tank warning went from 11 to 0 miles left to empty (see attachment). I drove on the highway each day and in the city. I purchased this car July 2020 with a full tank. This problem became evident in Aug 2020. After refilling the tank, the reader showed 111 miles to empty. I informed Hyundai agent of the issue, who had no idea why this was happening. The guage and fuel tank reader finally adjusted after about 3 days. I had 449 miles on the car at that time. I now have over 4,000 with same problem. Apparently, something is faulty, but I don't know what. Auto dealer is baffled. This issue could result in a real fuel shortage while traveling with no gas station nearby.

- Chesapeake, VA, USA

Following a firmware update to the obc for a recall, the vehicle transmission now has a severe delay responding to driver input. The transmission in this vehicle has electronic shift with pushbuttons. Previous to the firmware update, the transmission would respond instantly to driver input from these buttons. Following the firmware update, the transmission takes two seconds to respond. This delayed action prohibits driver emergency shifting, creating severe risk of an accident. In my vehicle, I recently was almost involved in a traffic accident when the delayed response from the transmission caused my vehicle to reverse into the opposing lane of traffic as acceleration was attempted thinking the vehicle had shifted into drive. Upon entering the active opposite lane of traffic, emergency accident avoidance was prohibited by the delayed response of the vehicle shifting into 'drive' in order to move the vehicle from the opposite lane of traffic. Previous to this instance, there have been delays in vehicle shifting which have nearly caused an accident when the driver attempts to place the vehicle in 'park', but the delay causes the vehicle to move forward as the driver removes their foot from the brake, and the car moves forward toward stationary objects and people. This has been reported to Hyundai and they have not responded yet. Furthermore, other obvious firmware issues in the vehicle have been identified, one in a different safety system.

- New Port Richey, FL, USA

I own a 2020 Hyundai Sonata. I purchased the car on January this year the miles in the car is 700 miles. A month after the car star giving me problem with break. Somehow the car applies the emergency break by itself and doesn't want to move. When I drive the car suddenly stop by itself and giving me message like: To move the car put your seat belt, lock all the door even when I have my seatbelt and doors are lock the car do that when ever the less I expected. I took the car three time for repair and update and the car give me the same problem. The dealer gave me a loaner another 2020 Sonata and have the same problem. This is a very dangerous issues because if is rainy or snowing. The dealer doesn't find anything wrong with the car when they drive the car. I told them that happen when the lees expected

- Brooklyn, NY, USA

The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at various speeds, the passenger's side blind spot detection system failed to activate. The contact also stated that the forward collision warning light intermittently activated while stopped at a red light. The contact stated the rear brake assist activated intermittently on several occasions. The vehicle was taken to nassief Hyundai located at 1059 oh-46 North, jefferson, oh 44047, and preston Hyundai of sharon located at 1251 E state St, sharon, pa 16146, where the mechanics were unable to duplicate failure. The vehicle had not been diagnosed nor repaired as of yet. The manufacturer had not been informed of failure. The failure mileage was approximately 623.

- Niles, Oh 44446, OH, USA

The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at approximately 55 mph, the vehicle shifted into safe mode and lost motive power. The vehicle was taken to St. Charles automotive located at 5601 veterans memorial pkwy, St peters, mo 63376, (636)441-4481 but was not diagnosed nor repaired. The manufacturer was not contacted or informed of the failure. The approximate failure mileage was 1,500.

- O'fallon, MO, USA