The contact owns a 2016 Hyundai Sonata. While driving 30 mph, the rear passenger brake seized 3 times before the incident on 4-8-19 were those times it corrected itself but the last time it happened the right rear tire locked up and the car would not move. The vehicle dragged onto the street as the other three tires spun out. There were no warning indicators illuminated. The vehicle was towed to transittowne Hyundai (7420 transit rd, williamsville, NY 14221, (716) 634-3000) to be diagnosed; however, the test could not read the codes. The dealer installed a new rear brake caliper. The manufacturer was made aware of the failure. The failure mileage was 8,020..

- Amherst, NY, USA

I have been experiencing an intermittent braking issue when I press on the brakes, the pedal gives resistance and won't fully engage until I let my foot off the pedal and press again. This issue has been going on for 5 months now, I've taken it to the local dealership and another brake shop, no one has been able to diagnose an issue. Also no warning lights appear

- Ocala, FL, USA

I was driving West on a four-lane road going 40-45 mph, no one in front of me, when suddenly the automatic emergency braking system engaged on its own without any warning, stopping the car immediately and abruptly, enough so it threw articles on my front seat into the floorboard. Antilock brakes engaged at the same time shaking the car to a stop. Thankfully no one was immediately behind me and thankfully I was not on an interstate going 70 mph! took it into the dealership that day, they kept it overnight and they could not find anything wrong. After reading that other 2016 Sonatas had done the same thing, I told the dealership I did not feel safe driving the vehicle and did not want it any longer. They referred me to Hyundai corporate who denied my claim because testing came up with no defect, and I assume is going to put it right back out on the streets!! I had no choice but to trade it in and get another Hyundai, since I would not feel comfortable selling it outright to someone else knowing this had happened. I am very disappointed with corporate for allowing this vehicle to remain on the roads when this is obviously not the first complaint like this in the 2016S.

- New Palestine, IN, USA

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.

- Oxnard, CA, USA

The contact owns a 2016 Hyundai Sonata. While driving various speeds, the contact applied the brakes and a loud squeaking noise was heard. The vehicle was taken to millennium Hyundai (220 N franklin St, hempstead, NY 11550, phone number: (516) 282-3800), but the cause of the failure could not be determined. The vehicle was not repaired and the failure recurred. The manufacturer was not contacted. The VIN was unknown. The approximate failure mileage was 16,000.

- Manhattan Hill, NY, USA

When depressing the brake my car is making a clicking noise. Went to the dealer and he said it is normal. Previously it was little but now days it is making loud noise while driving. When we depress the brake and try to change the gear from P to D the gear rod is making same clicking noise. When read forums I heard that it is the problem with the solenoid but the dealer does not want to do because he has to do it for free. When asked the dealer he said that it does not come under warranty. Now the noise is really loud and no one is helping me out.

- Hicksville, NY, USA

While the vehicle is in motion and when I hit the brake. A click noise is always coming when we hit the brake till the end. Always happening observing from past 2 months. The other problem is when we hit the brake and and hold the shift knob it is making tick tick noise. Always happens when I showed to the mechanic they are saying it is normal because they have to do it for free of charge. Hyundai gives warranty but the dealers neglect to do. I am getting a mileage of average 10 miles if I even maintain a speed of 45-50 mph. If I put 14 gallons of gas I get hardly 225 miles and I have no problems with the car and I change the oil before the service interval.

- Hicksville, NY, USA

11/18/2016 - I backed out of my driveway and was slowly accelerating up my rural street when the car suddenly brake hard of its own Accord and made a clunking noise. No instrument panel indication was provided as to why this occurred. This was not driver error as my foot was still on the accelerator. I was driving straight ahead - not turning - no other cars were in the vicinity. 11/21/16 - while driving, the car drove sluggishly (almost like the parking brake was on). When I pulled into my driveway, I again heard a clunking sound. When I opened my door there was a pronounced burning smell and the rear wheels were too hot to touch. Again, there were no instrument panel lights to indicate any issue. The car has been operating normally since these incidents. I have been unable to replicate these issues. This car has had a series of unexplained electrical issues. The cause of the problems described is unknown. My wife and I found these events frightening and a safety issue in a car with less than 5,000 miles and less than 3 months old.

- Egg Harbor Twp., NJ, USA

I have a 2016 Hyundai Sonata limited with the ultimate package that has forward collision protection which is a wonderful thing if you are about to hit a concrete wall. However if you are flowing with traffic and have to slam on your breaks because the car in front of you does and then they start to go again, the Sonata thinks you are coming to a wall and sends you to a complete stop. This causes problems with the traffic behind you. I have almost been rear ended twice. I now disable it because I drive the DC beltway where people constantly slam their brakes. It's a great concept but definitely needs a lot of work before it is safe on our busy roads

- Odenton, MD, USA

Have a 2016 Hyundai Sonata limited with the ultimate package and was driving down the road at the approximate speed of 35mph with no vehicles in front nor behind me when the instrument panel started illuminating and beeping and the brakes abruptly slammed! had there been a car behind me it would have rear ended me. My daughter was in the passenger seat. This was at approximately 4500 miles. I took it to the dealership and no problems found

- Odenton, MD, USA

Takata recall. My foots sometimes brushes a fuse box that is mounted above the gas/brake pedals, causing me to lose a split second in going from gas to brake. I only have a size 10.5 shoe. Did not have this problem with my 2011 Sonata. Much more foot room down there on 2011 model. Service dealer said nothing can be done.

- Commack, NY, USA

Around 10pm I was driving with one passenger straight down a local Suburban street. There were no other cars nearby on the road nor were there any pedestrians in the vicinity. Abruptly, without any warning, the car gave off a beep and brought itself to an immediate stop in the middle of the road without any interaction from me at all. The road in front of the car was clear and following the stop no warnings were displayed on the dashboard indicating a reason for it or a malfunction in any of the systems. My passenger and I were extremely fortunate that there was not a car coming up behind us because this immediate unintended stop for no reason would very likely have caused an accident.

- Los Altos, CA, USA

Emergency brake self engaged while entering roadway causing car to be immobile and smoke poured from rear of car. Was nearly T-boned then it suddenly accelerated....updated 08/31/16

- Toms River, NJ, USA

As I was accelerating onto a highway the electronic emergency brake system ( attached to rear wheels of vehicle) without warning activated while vehicle was accelerating at speeds of over 55 mph. Brake system pulsed violently and then wheels completely locked up cause the car to rear wheels locked up causing damage to entire rear braking system. Hyundai failed to alert me to this danger and only disclosed it after the vehicle failed. After the vehicle was towed to the Hyundai dealership, Hyundai now claims to have this notice out- manufacturer campaign id: Tff 2016 Sonata electric parking brake logic update. Luckily, we maintained control of the vehicle throughout the skid and system failures. We had to throw water on rear wheels/brakes to keep them from catching on fire. Entire rear brake system destroyed...multiple sensor systems failed for this fault condition to occur. According to Hyundai manuals, this situation is impossible with their redundant sensors/check sensors, yet it did occur. Hyundai is investigating, however they did not seem too concerned that they put my family in danger with a product they knew was defective, yet they never alerted me to this issue. Vehicle has 5002 miles on it, and was purchased 3-5-2016, owned just over 3 months.... updated 08/23/16 updated 06/15/18

- Woodbridge, VA, USA

On February 19 2019 I was driving a car rental from hertz driving on the freeway in southern ca driving only 25 mph I crashed trying to avoid crashing into car in front of me kept putting on my breaks and the car would not stopped the breaks malfunction I tried to changing lane I still crashed I was going 25 mph the car was totaled bumper was plastic or fiber glass the air bag "exploded" not deployed. The plastic compartment where the airbags is stored, explode plastic became a jagged knife.it punctured a hole on my legs sliced other part of my legs when air bag explode some of the plastic was released and sliced my legs, air bag releases extreme smoke inside the car all you are inhaling is smoke. Air bag I was in and out of consciousness from smoke inhalation I became dehydrated throwing up trapped from the airbag that is pasted against the driver side door. The airbag when it explode becomes a death trapped!!! instead of saving peoples life the plastic material manufacture the air bag is a plastic material it sticks tightly against the door if you do not have any strength to try to peel off or pull the airbag off the door you become trapped... if the crash does not kill you the smoke inhalation and being trapped by the airbag will! when airbag it explodes the plastic compartment becomes a jagger knife the airbag releases extreme smoke after air bag explodes I was taken to emergency room I was given a technic shot behind airbag and plastic explode. When I got out the emergency room three days later I went to the tow place to take a look at the car and took video pictures and took pictures of the airbag jagged plastic that caused my injury.. car rental is just worried about there car not me I almost died

- Daly City, CA, USA

Rear brakes failed to properly function while the vehicle was in forward motion on a highway. Both rear brakes locked up without operator pressing on brake petal. Both rear brakes and wheel got red hot causing passenger side rear brakes caught on fire. No brake warning lights was activate. This event took place twice, once on 1/27/16 (18 days after purchase) and 2nd time 3/7/16. (30 days after it was allegedly repaired.

- Middlburg, FL, USA

I purchased my vehicle and felt like the brakes were pulling. It felt like the emergency brake was on but there was no indicator that it was on. The car was being driven at this point.

- New Orleans, LA, USA