Service Brakes Problems of Hyundai Sonata - part 1

I was turning into a parking spot and the car accelerated unexpectedly. I slammed into a snow bank and my front bumper was damaged.

See all problems of the 2015 Hyundai Sonata 🔎.

I contact the Hyundai dealer about my 2016 Hyundai Sonata. For all I know those vehicles have recalls with engine failure/stalling due to premature rod bearing wear, fire risks from malfunctioning electric oil pumps. My car is having those exact problems with the abs lights being on and is also have problems with the vvt sprocket. And the oil I called Hyundai and they said my vehicle only has a recall with the junction box. But my car is unable to go over 60. And is unsafe to drive and the recalls with that type of model car is the same recalls I am having and soon as I've bought the car and had it for some time I am starting to have those problems so I would like to know what’s going on because it is unsafe and I can’t even drive my vehicle I also have a blinking check engine light. I’ve wanted to report this now incase risk of a fire because I’ve did my research and realize these cars that have these type of problems are known for catching on fire.

See all problems of the 2016 Hyundai Sonata 🔎.

I began braking and the brakes locked up. Braking to the floor and the car would not stop resulting in a car crash.

I was driving in the evening on 2/7/26. The red brake light came on in the dash and seconds later the car went into limp mode. An alarm went off indicating that the hybrid system was not functioning. The braking performance decreased significantly. The car slowed down immediately and could not exceed 15 mph. My safety was extremely compromised. Luckily I was not on a high speed road or interstate and was able to pull off onto a side road. If I had been on a busier road, I believe that I would have been in an accident. This could have seriously injured myself or others. The vehicle was towed to a repair shop. The braking pump was replaced and that rectified the problem so far. The old part has been disposed of. The problem was reproduced by the repair facility.

See all problems of the 2013 Hyundai Sonata 🔎.

The contact owned a 2013 Hyundai Sonata. The contact stated that while the contact's son was driving at an undisclosed speed, the brake pedal was depressed, the vehicle failed to stop as intended. The contact's son noticed an unusual sound coming from the hood compartment. The contact stated that the sound was as if something was coming through the hood. The contact's son lost control of the vehicle. The contact's vehicle rolled four times before rolling into a ditch. The contact's vehicle caught on fire. The contact's son was still inside the vehicle. The contact's son exited the vehicle. The fire department arrived and extinguished the fire. The vehicle was towed to a local tow yard. The contact's son was transported by a medical helicopter to a local medical facility. The contact's son sustained a punctured left lung, seven broken ribs, a fractured right hip, and additional bruises, minor burns, and bumps. The contact was advised by the insurance company to report the failure to the NHTSA hotline. In addition, the contact was informed of an unrepaired recall associated with the VIN, NHTSA campaign number: 22v312000 (fuel system, gasoline), which the contact was not aware of the unrepaired recall. The contact was unsure if the vehicle had been inspected by the insurance company. The manufacturer was not made aware of the failure. The failure mileage was approximately 170,000.

My engine light come on. Air flow notification come on. I had a brake cleaner notification come on.

See all problems of the 2025 Hyundai Sonata 🔎.

Experienced sudden unintended acceleration causing my car to speed up, lose control, and crash into the vehicle in front of me.

Vehicle: 2016 Hyundai Sonata VIN: [xxx] while stopped in traffic with my foot firmly on the brake, my vehicle begins to accelerate before I release the brake pedal. This is not normal “creep” — the engine increases rpm and the vehicle moves forward as if the accelerator is being applied, even though it is not. This condition has occurred multiple times and creates a serious safety risk. The vehicle surges forward, sometimes 20 mph, unexpectedly and has almost caused several collisions. This rapid acceleration can easily cause a collision with a pedestrian or the vehicle in front of me. The onboard diagnostic system repeatedly reports a camshaft position sensor fault. The sensor has been replaced, but the problem returned, indicating the issue is not the sensor itself but a deeper engine or electronic control malfunction. Because this vehicle uses electronic throttle control, I am concerned the engine control module is misinterpreting throttle and brake inputs and failing to properly apply brake-throttle override. The vehicle is effectively accelerating against the brake. This is a dangerous and unpredictable condition and represents a potential defect in the throttle/engine control system. This is clearly a safety-related issue that warrants investigation before it results in a serious crash or injury. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My vehicle, a 2014 Hyundai Sonata turbo, is having brake lock-up issues. It seems to be related to the avs (automatic brake system). This happens mostly when the vehicle is parked on a hill and the brakes lock up when I start moving. This has been happening for several months, but my mechanic hasn't been able to find the problem. I made an appointment with Hyundai to find out what the issue is, but they told me there's no recall related to it.

See all problems of the 2014 Hyundai Sonata 🔎.

The vehicle's emergency brack system is malfunctioning. There have been several instances where the car's emergency brack went on while no coalition was going to happen. Several instances as well happened while in reverse the emergency bracks went on without there being anything behind the vehicle.

See all problems of the 2024 Hyundai Sonata 🔎.

Brakes seize up while driving and then cannot move the vehicle. This causes a dangerous situation while driving and then breaks lock up and cannot move car even though vehicle is on and then stopped for a stop light. Car must then be turned off and sit for about 30 minutes so it can unseize and when that happens, you can then resume driving and then check engine light comes on. Brake lights were staying on even when vehicle is shut completely off. Abs and esc lights stay on consistently and never turn off. Vehicle brake switch was replaced at carolina Hyundai of high point, nc. So break lights have been repaired. They had to order the stop switch lamp replacement for recall as it was never done and will be fixed in next week. 3 door handles fell off and cannot open the rear driver side door at all. Window electric system won’t let windows go up and down and had to make a latch pull string to open driver door. Passenger door will not open at all and no handle and is a dangerous situation. Break switch not being replaced would have cause an electrical fire and is a complete dangerous vehicle even after being inspected less than a week ago.

See all problems of the 2009 Hyundai Sonata 🔎.

The contact owns a 2013 Hyundai Sonata. The contact stated that while driving 45-50 mph and depressing the accelerator pedal, the vehicle failed to respond and hesitated. The brake and the hybrid system warning lights were illuminated. The contact was able to pull to the right side of the road and waited for her husband to arrive. The contact turned off the vehicle and restarted the vehicle, and the vehicle operated as intended. A dealer was contacted. The vehicle was taken to a dealer, where it was diagnosed, and determined that the hybrid ecu needed to be replaced. The contact stated that the dealer checked the error on the brake failure light that was illuminated, but had not yet gotten a response back from the manufacturer. The vehicle was taken to auto zone where it was diagnosed, and determined that the hybrid ecu needed to be replaced. The contact stated that the failure had occurred on several occasions for the past three years. The engine was replaced, and the vehicle was repaired. The manufacturer was not notified of the failure and informed the contact that they have not heard from the dealer. The approximate failure mileage was 128,000.

The vehicle experiences a recurring defect where the brake light turns on suddenly and the engine shuts off while driving. The failure appears related to the braking system (brake switch circuit), electrical system (can-bus/ecu communication), and engine control (shutdown/stall). The system remains installed and is available for inspection upon request. The shutdown poses a serious safety risk, including possible rear-end collision or loss of power in traffic. The problem has occurred multiple times. The dealership inspected the vehicle briefly but failed to diagnose or document the defect and returned the vehicle within hours, stating “it shouldn’t be a problem,” even though the issue continues. Hyundai has refused to provide recall documentation or authorize a re-inspection. The only warnings prior to shutoff are the sudden activation of the brake warning light just before the engine cuts off.

See all problems of the 2011 Hyundai Sonata 🔎.

The contact owns a 2017 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the contact engaged the hybrid function on the vehicle and the vehicle unexpectedly stopped. The contact stated that the accelerator pedal was depressed; however, the vehicle took several minutes to respond. There were several unknown warning lights illuminated. The contact stated that when the vehicle accelerated, the vehicle jerked abnormally. The vehicle was taken to the dealer, where it was diagnosed and determined that the brake sensors had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was made aware of the failure. The approximate failure mileage was 130,000.

See all problems of the 2017 Hyundai Sonata 🔎.

Good day, please note that most of my communication with Hyundai has been over the phone. I sent one an email shortly after the event, and after following up on the phone, I received this following string separately. I can forward you more along the way, but Hyundai is in possession of the call recordings. I was hoping they would cover my repairs, my engine had a lifetime warranty, but during this process I learned that there was a recall for this car that I was never aware of as the new owner. I needed a software update to get any repairs covered. Please reach out to me for more info!.

The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the brake warning light illuminated, and the vehicle shut off. The vehicle was taken to the dealer, where it was confirmed that the failure was due to an unrepaired recall. The contact received notification of NHTSA campaign number: 23v651000 (service brakes, hydraulic). The repair was performed. The failure reoccurred. The dealer was made aware of the failure; however, the failure was not duplicated. The contact was informed that the recall was closed. The vehicle was taken to an alternate dealer, where it was diagnosed with a failed hydraulic abs booster sensor. The contact was provided dtc: c1237/hpu. The contact was informed that the hydraulic abs booster sensor needed to be replaced. The vehicle was repaired. The vehicle was released to the contact; however, the failure reoccurred. The contact stated that the abs warning light illuminated and then went off. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to take the vehicle for a second inspection. The dealer declined to perform the second inspection. The contact was informed that the repair was not associated with the recall repair. In addition, the contact referenced several unknown recalls; however, the contact was informed that the repair was not related to a recall. The failure mileage was approximately 149,000.

Based on what I experienced, the fire appears to have resulted from an internal mechanical or electrical failure that occurred without warning while the vehicle was in motion. No prior issues or dashboard alerts were present at the time, and there was no external impact or damage that could explain the fire.

See all problems of the 2012 Hyundai Sonata 🔎.

Driving came to a stop ,light turned green made a u-turn to go to the gas station heard a pop noise smoke came from inside the car tried stopping it but the brake pedal sunk into the ground pressed my emergency brake it was seized wouldn’t go down (never had that issue my brakes always work ) I smelled brake fluid and seen the abs light on the dash then the power started to go out and my girlfriend almost got trapped in the car.

The rubber stopper for the brake light switch on the brake pedal deteriorated and fell apart. This resulted in the brake lights remaining on constantly, cruise control being disabled, and low battery voltage.

We pulled up at hillgreen circle cockysville MD to drop my boyfriend off at his apartment. I went to pull in the parking spot. I went to put the car into park and it had no brakes. I was slamming them and pumping them. It excellerated and took off. Jumped the curb,went down the hill and into the apartment building. A red light had came on the dash, right before it took off. Seemed like it was changing to gas or the electric mode,or the other way around. The airbag on the passenger side came out deflated,and filled with smoke going into the car. He was the belted front passenger and his elbow went in to the front window. You can tell by looking at it,the hole and spidered around it. He broke his right elbow. It is available anytime at the moment. It's at Hyundaii in glen burnie. I need to get it to state farms lot,to get the kelly blue book value. We look forward to hearing from you.

The part of hand break assembly that’s inside the disk break (the drum assembly) fell off when the dealer ( patrick Hyundai, schaumburg, IL) tried to adjusted. I went to the dealer because the hand break stop to function. I suspect very bad design of the whole assembly disk and drum break. Also the dealer stated that all assembly was rusted.

Vehicle: 2017 Hyundai Sonata hybrid – 131,700 miles – maryland registered while driving, my vehicle displayed the warning “check hybrid system. Turn off engine. ” the dealer diagnosed a failure of the hydraulic control assembly (abs/brake control unit). This is a safety-critical braking system. The vehicle is unsafe to drive until repaired. Hyundai previously issued recalls for this same component on earlier Sonata hybrid models (2011–2015), due to risk of brake failure and fire. My 2017 vehicle is experiencing the exact same failure, yet is not currently included in the recall. This defect should be investigated as it compromises safe braking performance and puts drivers and passengers at risk. I am requesting that NHTSA review this issue and consider expanding Hyundai’s recall coverage to include later model years like mine.

I have tried to have my Sonata 2013 gone over gor the previous ownership never gave me any ro in this bias was stared. This previous wherebpurchased and worked , was not on the the up and up. Vwhere ,steele Hyundaibwhen owned know keating group purchased. I'm asking ngo iver the safety I the setvice ussues t hat Hyundai is awarevand have all thr campsign numbers looked up I do not believe since ive oened the car ,sonata anythingbwas donen,agein nothing evervstated and knly oil changes done without any given paper wirk given on recalls except oil changes. Ssues and . So wanting, asking that no chargeb,go iver make sure for the situation posted and Hyundai posts in 6bareas yes , go over for the brake system is causing the hybird tobshit down and the car with squiggly line know comes on fuses and the the brake power booster sensor is the problem gor I had the Sonatanon computer that came up also shavings in the engine campaign 162,994 251 to go iver no charge to make sure it was done and whatever faulty be replaced no charge . Charge to Hyundai for the problems if safety and service are on line stating should be taken care if no charge to consumer. Nothing is happening, just the insanity definition, to resolve. I ask forba new case manager I'm entitled to, can't turn down ,but is and lies about contact. Once, returned call no return call. Hope in the next 24 hours this be resolved so I can have this situation at no charge,don't believe ever done,no paper work in my possession, never had oil changes. Never told ,never anything from Hyundai. Almost got reat ended will send bill any to Hyundai tontalje carebofbas well something know NHTSA isn't helping after many complaints as this. Hyundai admits no charge for t his situation ,insanity and no cooperation just arrogance and belligerence . Mileage has nothing to do with. Engine should be looked at for whatnot NHTSA rant about engine in my Sonata hybird and engine,problem still exists at.

This has been going on nothing resolved and no cooperation. Im going yo locate an attorney that really don't want to. Requesting this be ,the situation be loojedvatb,at no chargevand replace whatbwasvsuppisedly replaced by steele south loop Hyundai ,houston texas ,sold to keating groupbbased out if texas. What I'm asking isn't make sure itvwas done ,and whatever replaced ,inexpensive to do to. Repkace the parts , and computerbprograned to make current no chsrgebto ne for Hyundaibsta t ES in line and would not be getting emails from NHTSA as I do . Hope finally 24 hours resolve, cooperation and done finally.

The contact owns a 2012 Hyundai Sonata. The contact received notification of NHTSA campaign number: 18v934000 (engine, fuel system, gasoline). The contact stated that while driving 20 mph, the vehicle stalled. There was an abnormal knocking sound coming from the vehicle. While driving at an undisclosed speed, the vehicle stalled after five minutes. The engine and the abs warning lights were illuminated. The vehicle was towed to the residence. The contact called the local dealer and was informed that the maintenance records were needed. The contact was using an independent mechanic for maintenance and did not have the records. The vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 100,000.

I am driving and all of a sudden the brakevsystem lighthouse on bthe hybird system begins to fail and ge car loses power I almost got hit 4 times already, from this . The system starts to ding ,shut down and states to bring to a certified mechanic ir dealership. Hyundai has on line tgeybarevaware and this problem for this model and should be taken care if no charge for bis a problem for this year model and hybird model 3 diff we rent areas on lounge through Hyundai it states this a known issue. The part to replace and had a certified ase mechanic on computer look and went through the computer system and stated it is a power booster brake sensor. This is starednin 3 different areas bon Hyundai websitebfornthe model and year. Suppised the recall in the nowhere done oct 8 2024 but never had any letter of recall nor the dealership contact me anmboutbthis ,but had an oil change done at or about the supposed nrevapl been done. I have no documentation of this nor any given so inwantb,asking give me type kit needed, to take care nofbthis. . No documentation ofbanybkjnd given exceptb,no invoice given done, so I would like tge kit for fuses do go bad. Anything can be put in computer stating what is supposed done but not. Im not asking except to rake carebof this no charge for Hyundai it's free in 3 different areas should be done non published recall . For this year. All online. I asked for cooperation in this matterband the dealership that purchased has been sold to anormther and banner dealership stated in line ,not responsible for previous dealerships problems etc,take it up warmth them the steele group out if canada,that sold to ge jeating group that know owns this dealership . . I asked for a newbcasemmanager ,drniedband I have a rightbtocaskband should be changed for her arrogance, belligerence in nmattrr should not be. I purchasednthe brake booster sensorbforbwhat fred bactyally a little less with labor, beingshipped from Hyundai . Dot.

Sudden brake failure while driving at speeds around 40 mph, where both the accelerator and brakes became unresponsive, forcing me to coast before regaining limited braking ability after repeated pumping or having to "restart" the car completely. During these events, loud grinding or dragging noises and vibrations were present. Despite adequate brake fluid levels and pad condition, the brake pedal went to the floor. Could be a potential hydraulic or booster failure. It is available for inspection upon request. I was in the car with a significant other at the time of the incident, this happened around 9 times on a very busy highway during a rush. I have been able to reproduce the problem on my own but has now been inspected by a dealer or independent service center. Online resources indicate others with the same symptoms under same conditions have. The component has not been manufacturer, police, insurance representatives or others. But I have very recently (around 4 months ago) passed a vehicle inspection. There were no warnings or other symptoms prior to failure, it's very sudden and having no idea when and where it would happen makes the car inoperable.

With no warning my car left me sit on the side of the road and when started the engine made an awful knocking noise. Hyundai denied to replace the engine despite there being at least 2 engine recalls. When I asked why they said it was due to no maintenance records so I provided them with maintenance records like they requested and then they deny it again and say they aren’t replacing the engine because the problem with my engine had nothing to do with the 2 engine recalls my vehicle is affected by.

The electrical in the entire car is malfunctioning. Sometimes the brake lights don’t work due to wiring, other times the seats control don’t work and the cables to battery is not connected/firing correctly. Has an entire electrical issue.

Braking system failed on my Hyundai Sonata hybrid 2013. I was driving on the highway and suddenly the vehicle started a constant beeping noise and the dashboard illuminated with a message that read "hybrid system warning! safely stop and do not drive" as I driving 70 mph on the highway, causing me to have to swerve onto the shoulder to avoid being rear-ended by vehicles traveling behind, this is a very dangerous issue, and Hyundai is placing safety of others on the lower rung of their priority list. I had the vehicle taken to the shop where I was initially told that the issue is contaminated braking fluid, the need to replace brakes and the brake master cylinder. Shortly after being notified of the issues that technician diagnosed I agreed to have these items replaced. However, when I went to pickup my car after being notified that services were "completed" the vehicle continued to have the same issues, the vehicle never made it off of the Hyundai car lot. The vehicle has been with Hyundai for over 2 months and suddenly I am being told that there is an abs issue and that it will cost over 5,000 dollars to complete repairs. I scoured the internet and noticed that there are many other complaints similar to mine.

I started the car, put it into gear and then the breaks wouldn’t work. The car dash said something like check breaks hybrid system failure do not drive. There is not recall on my car but the Hyundai service department doesn’t know how to fix it. This is the second time it’s happened. I’m scared to drive it. Please investigate!.

I drive a 2012 Hyundai Sonata limited. After a recent fill-up, I began experiencing delayed acceleration, engine hesitation, and what appears to be misfiring—especially at low throttle. Most notably, the brake lights stay illuminated even when the car is turned off, which drains the battery and poses a major safety hazard. I scanned the vehicle with an obd-ii scanner and received code p0504, which points to a brake light switch malfunction. I also noticed that pressing the start button with my foot off the brake still starts the engine instead of going into accessory mode—confirming abnormal brake signal behavior. I replaced the brake light switch, which temporarily fixed the issue, but the symptoms returned within a day. After researching, I found there was a recall (NHTSA 15v759000) for a nearly identical issue involving the brake light switch and stopper pad. However, my VIN is not listed, even though I am experiencing the same safety-critical symptoms. This issue poses a significant safety risk on the road, and I believe my vehicle should be included in the affected population of the recall or issued a technical service bulletin extension.

The issue has happened multiple times while driving, sitting in traffic, or parked idling. The brake light comes on and starts flashing, alarm chimes, brake pedal goes to the floor seems to not have any hydraulic pressure, the brakes grind like I have no brake pads, and essentially I have no brakes. If I turn the car off and on it goes back to normal. I took it to have it checked for a diagnostic code, there were none.

Brake calipers are getting stuck often damaging the rotors and pads. This happens even for new calipers and rotors that won't last more than one year after replacement. The parts were original from manufacturer. The rear and front brakes were randomly getting stuck on one wheel after a period of using brakes. This put the vehicle in danger of getting fire from overheating rotors or increasing the risk of a crash because of an unusable brake system. This incident has repeated over time from 2017 till 2025 inducing big spendings for fixing brakes.

I am the original owner of a 2025 Hyundai Sonata purchased new in 2025. The vehicle currently has fewer than 4,000 miles on the odometer. Since early in my ownership, I have experienced a persistent and recurring squealing noise that occurs specifically when releasing the brake pedal after a short stop, and when transitioning from braking to acceleration. This is not an intermittent or weather/humidity-related issue. The noise has been consistent and ongoing throughout my ownership and has not resolved on its own--I was thinking it might since new cars take some time to adjust. At under 4,000 miles, brake components on this vehicle should be essentially new. Brake pads are engineered to last between 30,000 and 70,000 miles under normal driving conditions. A persistent brake noise at this mileage cannot reasonably be attributed to normal wear and tear and is indicative of a manufacturing defect, defective oem brake pad compound, or a sticking/dragging brake caliper that fails to fully release after braking. I note that NHTSA has previously investigated Hyundai Sonata brake behavior, including a technical bulletin concerning rear brake pads remaining in contact with rotors after a diagnostic self-check cycle, causing a dragging condition in the next drive cycle. My symptoms are consistent with this type of brake drag behavior. Multiple Hyundai Sonata owners have documented the same persistent squeal-on-release pattern on Hyundai owner forums, with some reporting the issue beginning within the first year of new vehicle ownership and dealers being unable to diagnose or resolve it. I have formally reported this issue to Hyundai motor America consumer affairs prior to filing this complaint and have requested warranty coverage. I am filing this complaint to create an official federal record of this defect and to contribute to any pattern investigation NHTSA may conduct on 2025 Hyundai Sonata brake systems.