Service Brakes Problems of Hyundai Tucson - part 1

On at least three occasions, the forward collision system incorrectly determined there was an imminent collision when a car or truck was simply coming over into my lane. The tucscon locked the brakes, bringing the car to a full stop in the middle of high-traffic roads even while the car in front was pulling away. I was unable to give the car gas to continue driving forward. On two occasions this was on an interstate, going from almost 70 mph to stop when there was no car or obstacle in front of the car. It created a very dangerous risk of being rear-ended. The car did display the message "collision warning" on the instrument panel, emit an audible alarm, and shook the steering wheel.

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I was on the freeway about 2 minutes and the car flashed a red warning then slammed on the brakes and I flew forward. No cruise control and no buttons hit or anything automatic. Another time,  I was merging to freeway on ramp (with 2 lanes merging and going to freeway). I was on the left right lane towards the on ramp and another car came speeding next to me on other the on ramp right lane. All of a sudden, my Tucson says emergency braking for about 1 to 3 seconds.  slamps the brakes. I am not sure if the other speeding car made a sensor think I was going to merge into him,or him into me, or the sensors didn't detect the lane markings. It's my daily route to this ramp and it has not occurred in the past. These emergency braking incident has happened several times (4-5 times in a month) to me, usually during a highway drive similar to those above. I have to turn off the forward collsion to stop this happening and it comes back on everytime when the car starts from a off.

4/I was in the turn lane and slowly approaching the vehicle in front of me. I was at least 12 feet back when the emergency brake engaged causing me to fling forward in my seat. However, I did have my seatbelt on a was not physically harmed, but mentally rattled. This also caused the car behind me to almost rear me. 5/1: I was in the parking lot of a local store. A pedestrian was passing at a safe distance as I was slowly cruising towards them. The car engaged the automatic brake even though the pedestrian was clearly out of harms way. There two incidents have occurred within 2 weeks of purchase of my car. There is a feature to temporarily turn off automatic brake, but resets with each restart of the engine making it inconvenient to apply. Also, it is easy to forget to apply each time you start the car. I’ve also read since my incidents other reports of Hyundai drivers saying the disable feature does not always work and automatic brake engages. I feel that the automatic braking is a huge safety risk for driver, passengers, pedestrians and other vehicles on the road. I frequently drive to another state via highway to visit my mother and a now terrified to drive that distance considering all of the accelerations and decelerations involved with highway travel. I feel completely unsafe in my new vehicle. Please review and encourage a software recall that completely removes automatic brake or allows drivers the option to disable and enable at will.

Safety risk: while traveling at approximately 25 mph on the I-495 (way to work) the vehicle initiated a full-force emergency braking event (phantom braking) without any warning. There were absolutely no obstacles, vehicles, or pedestrians in the roadway ahead. This sudden, unprovoked stop nearly caused a rear-end collision with the vehicle following closely behind, putting myself and other car at immediate risk of injury. There were no issues in front of me - only a straight road and I was not tailgating anyone.

I was driving on the highway in heavy traffic going about 65 mph. An unusual symbol appeared on the dash in red that I don't know what it was or what it meant but I thought it must be something serious. Then a warning came up saying for me to take a break. Then a different warning came up saying that I should take control of the car immediately, it was about to brake. The car immediately began to brake. Fortunately I was in the right hand lane of the three-lane highway and I was able to pull into the breakdown lane. I can't even imagine what would have happened if I was in the middle or far left lane. I was not unobservant and both of my hands were on the steering wheel when this happened. Once the vehicle stopped, the symbol on the dash disappeared and the brakes released. I was able to resume driving. Although there was no accident, injury or fire, and no police report needed, this does not discount the seriousness of this event. This could have been life-threatening if I had been in a different lane or had panicked, causing a multi car pileup in the heavy traffic. Serious enough that I feel the need to get rid of this car.

Had an issue with driver assist radar when in complete control. Until you’re not! brakes lock up skidding tires and causing seat belts to lock up. It happens so suddenly it scares you to the point of heart attack. This has happened: merely backing out of driveway, when accelerating in your lane with car in turn lane beside you turning right. And most recently on FL turnpike while in stopped/slowed traffic due to emergency vehicles trying to get to scene of naples wildfire. When I accelerated as traffic resumed at slow speed the car locks up brakes, squalling tires and slewing sideways. It startled me so much my heart was racing and I didn’t know if the car was still running or not. There was an 18 wheeler coming up behind and I was frozen not knowing what to do next. I don’t know if sensitivity can be adjusted or what it needs but my heart can’t take many more of these incidents. I will report to dealer as well. I know there is a reddit thread about these same issues that my daughter found on researching this issue.

The automatic emergency braking system has literally locked the brakes up 5 times in the last several months since the car was purchased new from the dealer due to this system thinking we were going to hit the car in front that was not braking hard. One time a car had already turned off the roadway and as we started to accelerate on down the road our car locked the brakes up as it has done 4 other times and then will not let you accelerate for a few seconds. 3 of those 5 times we have had cars behind us, one time was a semi, that almost hit us due to the unexpected locking of the brakes. This system can only be turned off each time you start the car by going through numerous menu steps and then it is right back on the next time you start the car. Not only is this going to cause an accident and potential injury(s) but it could even cause an argument with the vehicle behind thinking they were being brake checked. The dealer said they could not turn it off and the only choice was to do it each time you started the car but could turn the sensitivity down which we have tried and it still does it when you least expect it to when there really is no potential crash about to occur. We have emailed Hyundai and awaiting a response as well and advised if this system causes a crash and especially an injury as a result that we would sue and have requested a software update be done ASAP to allow the driver to turn it off and it stay off until it is turned back on or buy the car back as this is a very realy danger and safety issue. A safety feature shouldn't cause another safety issue in itself and this system is doing that and we would be shocked if it hasn't already caused crashes/injuries as a result in other Hyundai cars with this feature. There are numerous complaints by other owners regarding this same issue all over the internet.

Over the past four days, my vehicle has repeatedly applied braking unexpectedly without a valid obstacle or need to brake. This has occurred multiple times under normal driving conditions, including: twice on the freeway in stop-and-go traffic with vehicles at a safe distance ahead multiple times on regular city streets with vehicles ahead at approximately 15–20 feet once while turning into my driveway as my garage door was opening in one instance on the freeway, a vehicle behind me nearly collided due to the sudden unexpected braking. The forward collision-avoidance assist (automatic emergency braking) system is set to “late,” yet the vehicle still applies braking unnecessarily. This behavior did not occur previously and has started happening repeatedly within the past four days. This creates a significant safety risk, particularly in traffic where unexpected braking can cause rear-end collisions. The vehicle has approximately 1050 miles and has not been modified. The issue is currently being evaluated by a Hyundai dealership and has been reported to Hyundai motor America under an open case.

Hello, in my 2025 tuscan hybrid, the vehicle all of a sudden came to a near complete stop driving down the highway at lower speeds due to vehicles in front of me slowing down before a tunnel. While it was apparent I had to slow down, there was no immediate danger to me potentially crashing into the car in front of me which is why I am concerned the car is over reacting to my environment whilst driving.

When braking my 2022 Hyundai Tucson to come to a stop, the vehicle continues to accelerate. I have to release the brake and re-apply the brake to fix the acceleration problem. I check the internet on this problem. They internet says it is a software problem. The vehicle shows no code and the dealer says they don't have a problem. The dealer has not check for the problem since there is no code. No warning lamps or messages show up on dash. This happened 4 times in the last few months. Latest date was 4-4-2026.

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3 times my car have braked while im driving causing my whole car to jerk 2 of the time I hit my head and my knuckle and finger got hurt and was bleeding I have pictures but they are not allowing me.

The contact owns a 2026 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the brakes independently activated. No warning lights were illuminated. The contact stated that the vehicle had stopped in the middle of traffic. The contact's minor children were inside the vehicle and seated in the rear seats. The contact stated that during the failure, the vehicle jerked forward abnormally. The vehicle was taken to the dealer; however, the failure was not duplicated. The manufacturer was not made aware of the failure. The failure mileage was approximately 700.

Vehicle began flashing check driver assistance for rear sensors repeatedly while traveling out of state on March 30th with an occasional flash of check awd/4wd. On March 31st the vehicle flashed the warnings along with a variety of others flashing on the infotainment screen rapidly and shut off while driving. I was barely able to restart to get it safely into a parking lot before it shut down completely without restarting. The vehicle was towed to the Hyundai dealership that it was purchased from. The diagnostics show electrical and safety systems issues. The dealership and Hyundai USA has been less than transparent regarding a repair plan and potential completion date. It is currently April 21st with no end in sight. The vehicle feels completely unsafe to me and I regret the purchase wholeheartedly.

There has been an urgent safety recall with no fix for 4 months. I need the issue to be resolved so that my vehicle is no longer a safety hazard, but both the dealership I purchased it from and the manufacturer have stated that it's not a big deal.

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Dear NHTSA, I am the owner of a 2013 Hyundai Tucson. On March 28, 2026, my husband took our vehicle to keyes Hyundai van nuys dealership for a recall repair. However, the repair was not completed because a required part (brake fuse) was not available and had to be ordered. It has now been several weeks, and we have made multiple follow-up calls, but we have not received any update or callback. Because of this delay, my vehicle registration is now suspended, which is causing legal and financial problems. This is a safety recall, and the delay is unacceptable. Service / customer number: xxx I am requesting: - immediate update on the part availability - a confirmed appointment date - urgent completion of this recall repair please contact me as soon as possible. Sincerely, [xxx]   information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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Subject: safety concern – excessive automatic braking (2025 Hyundai Tucson) I am reporting a safety concern regarding the automatic braking system (forward collision-avoidance assist and parking collision-avoidance assist) in my 2025 Hyundai Tucson. The vehicle frequently applies sudden and aggressive braking in situations where there is no immediate collision risk. This occurs during normal driving and low-speed parking scenarios, including when passing nearby objects, backing out of parking spaces, or maneuvering in tight areas. The braking is abrupt enough to create a potential safety hazard, including: - risk of being rear-ended due to unexpected deceleration - disruption of normal traffic flow - reduced driver confidence and control this behavior appears overly sensitive and does not align with actual collision risk in many cases. I have attempted to adjust the system settings (including warning timing), but the issue persists. Additionally, the system resets upon restarting the vehicle, preventing a consistent mitigation of the problem. I am requesting: - a review of this system behavior as a potential safety defect - a software update or calibration option to reduce braking aggressiveness - the ability to permanently adjust or disable this feature please advise on next steps and whether this issue is known or under review. Sincerely, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2026 Hyundai Tucson. The contact stated that while driving 45-50 mph, the vehicle experienced phantom braking, causing the brakes to suddenly apply roughly. The contact stated that the failure had persisted and recurred while driving at 35 mph. The collision light was illuminated. The contact sustained a shoulder injury due to the sudden braking, but the contact did not receive medical assistance. The vehicle was taken to the local dealer, who was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 4,000.

Automatic braking engages when there is no actual hazard present and brings vehicle to a full stop. This causes a serious whiplash hazard to me and my passengers as our heads are thrown forward unnecessarily. It also significantly increases the risk of being rear ended by the vehicle behind me. This has happened on several occasions. Today it occurred because the car hit a small bump in the road while doing less than 10 mph. Google search confirms that this is a widespread and well-known defect and that Hyundai has not been willing to release a software upgrade that allows owners to turn-off they automatic braking feature from the dashboard control panel. Immediate action by NHTSA is required before somebody gets seriously injured or killed by this defect.

I am reporting a repeated brake system issue on my 2024 Hyundai Tucson involving premature rotor warping and brake failure at very low mileage. On April 30, 2025 (11,007 miles), I first noticed significant vibration and shaking when braking. On may 29, 2025, colonial Hyundai diagnosed the issue and resurfaced the brakes under warranty (Hyundai case #40826529). The issue persisted immediately after repair, and on June 13, 2025, I was informed that both front and rear brakes and rotors needed replacement. On June 19, 2025, all brakes and rotors were replaced under warranty, resolving the issue temporarily. Less than 8 months later, on February 12, 2026 (under 10,000 additional miles), the same braking vibration returned. The original dealer attributed the issue to driving behavior. At Hyundai’s direction, I sought a second opinion on February 26, 2026 at piazza Hyundai of west chester. They confirmed that the brakes and rotors again required replacement and indicated this was unusual for such low mileage. On March 16, 2026, despite the dealer’s findings, Hyundai corporate declined to cover the repair under warranty. This vehicle has now required three brake-related repairs within a short period and low mileage, including resurfacing and full rotor replacement, followed by another failure. This pattern suggests a potential defect in the braking system, materials, or related components, rather than normal wear. Component/system failed: the failure involves the braking system, specifically repeated warping/failure of front and rear brake rotors and premature brake wear. The vehicle and components are available for inspection upon request. When braking, the vehicle experiences significant vibration and shaking in the steering wheel and chassis, which affects braking smoothness and control. This condition can reduce driver confidence, increase stopping distance, and may lead to loss of control during braking, particularly at highway speeds or in emergency stop.

The brakes pushed down to the floor before the collision and wouldn’t stop the car my passenger was injured no warning system on the collision prevention and nothing engaged my foot was on the floor and there was about a 10 second delay before the brakes kicked in it’s all on dash cam.

All systems warning lights came on.

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The automatic braking system has slammed on when traveling at least three times now when there is nothing close by or in front of me. One time a piece of a bag was fluttering on the roadside by me and my t slammed to a full stop almost causing an accident.

Driving to work, going into a turn with no obstructions my car frequently alerts to a "collision warning" that is not there. Additionally, I have been driving on the highway, with no obstructions in front of me and my car emergency brake despite an emergency not being present. In both instances, it is extremely distracting and induces anxiety as I am alerted of a threat that is not there. Further at highway speeds (65-70 mph) on the highway, and braking despite having no emergency nearly caused an accident. I was able to push further down on the gas to force the car to keep going to not stop on the highway. The collision warning has been an issue since purchase of the car in June 2024, the emergency brake occurred in February 2026.

I rented this vehicle for 5 days. In those 5 days, twice while driving on the highway (at 5-10 mph under the posted speed limit due to heavy traffic, dry and clear weather), I found it necessary to brake hard due to other vehicle traffic braking hard in front of me. When I had slowed down sufficiently and felt I had sufficient space between my vehicle and the one in front of me, I let off the brake pedal, but the "forward safety" feature continued to brake until the vehicle came to a complete stop nearly causing the vehicle behind me to hit my vehicle. To be clear, no accident occurred, but in one of those instanced the vehicle behind me was within ~1ft of hitting my rear bumper. Had the vehicle behind me not been able to stop in time, there would have been an accident, and because the brakes were locked by the computer, I could not have done anything to prevent it. After the second incident (on 2-15-2026), I looked through the vehicle setup information and found it is possible to disable the "forward safety" feature to prevent additional incidents, however, that setting can only be changed then the vehicle is stationary, and it automatically turns back on every time you start the vehicle.

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at an undisclosed speed attempting to park in front of a building, the brake pedal was depressed, however the vehicle failed to stop as intended. The contact stated that the vehicle lunged forward and independently accelerated. No warning lights were illuminated. The vehicle crashed into the building. The crash caused damage to the interior and the exterior of the building. The vehicle was driven to the contact's residence. The vehicle was later taken to a collision center. The contact was informed to bring the vehicle back at a later date. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. No police report was filed. No injuries were sustained. In addition, the contact stated that the vehicle had experienced some electrical issues six months after owning the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 4,500.

Component: engine / electrical system / fuel system incident date: February 9th, 2026 vehicle speed: 45-50 mph description: while traveling at highway speeds on a major roadway, the vehicle experienced a catastrophic and sudden engine stall without any prior warning or dashboard indicators. The engine shut off completely while in motion, resulting in an immediate and total loss of power steering and power-assisted braking. I was forced to perform a high-effort emergency maneuver in heavy traffic to reach the shoulder and avoid a collision. This vehicle is used to transport myself, my coworker and my family whose lives was placed in immediate danger by this failure. Since the start of the financing agreement, this vehicle has a documented history of recurring sensor issues and failed repair attempts at the dealership (route 1 Hyundai). The dealership has previously attempted to address electrical/sensor malfunctions, but the root cause remains unresolved, leading to this life-threatening stall. I believe this is a significant safety defect in the vehicle’s electrical or fuel management system that poses an unreasonable risk of accidents and injury.

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Component or system that failed or malfunctioned: the electronic throttle control system and/or the powertrain control system malfunctioned, causing the vehicle to accelerate automatically and involuntarily. How safety was put at risk: the malfunction caused a collision with another vehicle and a structure. The failure placed the safety and physical integrity of two individuals at serious risk. Problem reproduction or confirmation: to my understanding, the issue has not yet been reproduced or confirmed by a dealer or an independent service center. Inspection of the vehicle or component: the vehicle and/or the affected component have not yet been inspected by the manufacturer (Hyundai), law enforcement, or insurance representatives, as an insurance claim is currently in progress. Warning lamps or prior symptoms: there were no warning lights, messages, or other symptoms prior to the failure. The incident occurred suddenly without any prior indication. During the event, the brake pedal did not respond.

I was parking my 2 month old car going only about 5 mph & had to press the brake all the way to the floor to stop. There were no warning lights. I had it towed to the dealership & the tow driver confirmed that there was a lot of play in the pedal. The dealership had it for almost a month & could not duplicate the issue or find the problem. I am afraid it will happen again. Hopefully, if so, it will be at a low speed again.

The forward collision avoidance system in this generation of Hyundai Tucsons is dangerously flawed. We previously had a 2020 and no issues, but this one slams the brakes at the drop of a hat and has nearly caused several accidents as there is no good reason for the intervention (ample space to leading vehicle) and it brakes so hard that cars behind typically need to veer to avoid rear end collision. This is not a one-off event or linked to particular driver/driving style - both adult owners of this vehicle have experienced this on multiple unrelated occasions. All sensitivity setting have been set to minimum and the only way to drive with peace of mind is to completely disable the system - but here is where the next massive design flaw the system automatically reenables at each re-ignition; there is not permanent override, which is extremely dangerous. It is not practical to manually disable the system on each drive because you need to navigate multiple system menus to adjust the setting. Google and user forums confirm this collision avoidance system is a widely experienced and complained about safety issue for Hyundai and it should be investigated. People will likely get killed due to this “safety feature”. Ideally Hyundai should push a recalibration for those who want this feature and enable a permanent override option in the system settings for those who don’t.

I was driving on the highway with no one in front of me. The car suddenly slammed on the brakes and flashed "emergency breaking system" on my dash. My car went from about 75 mpg down to 50. The car behind me almost rear-ended me. He then proceeded to pass me and brake check me because he thought I had deliberately brake checked him. This incident caused the man behind me to get road rage and react dangerously to me. I hit the gas and it finally stopped breaking and let me gain speed up again. It was terrifying. This is not the first time this has happened but it was the first time in the highway. It has happened several times on side roads for no reason either. I have an appointment with Hyundai to figure out what they can do because I don't feel safe driving this car.

I parked my car on a driveway with a slight incline. After putting the car in park, I stepped out of the vehicle and the car rolled back into the street. I brought the car back into the driveway, again put the car in park and engaged the parking brake this time. The car rolled back out into the street again. Thankfully, the grandchildren were not playing behind the car and there was no one was parked behind me.

The same incident has occurred 4 times ( [xxx] while driving on the freeway in light traffic and no vehicles in front. The forward collision sensor triggered dropping the vehicle in speed approx 30 mph almost instantaneously. This is san diego so no snow, rain or sleet and we were driving eastbound each time with the sun at our back. Hyundai kept the car for a week for diagnostics and found nothing. We have since escalated to corporate and are going in for another round of diagnostics. We have been exceptionally fortunate that we were not rear-ended. We have since installed a dash-cam to record the next event information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was driving down the highway going about 60-65mph with cruise control and lka on. I turned my blinker on to switch lanes, checked my blind spot, and moved over to the left. As I was doing so, a semi switched lanes from the left into the right (my new lane) right in front of me. The truck then slowed down a lot, and usually my forward collision warning would say something if my adaptive cruise control isn’t on (or is and I’m just going too fast to slow down) neither of those things happened. No warning. No automatic brakes. No slowing down. I tried to engage the brakes manually but nothing happened. I slammed into a semi at around 60mph because of 3 different system failures. Not only did I hit the semi at 60~mph, apparently my brakes didn’t work at all and I spun out until I hit the concrete barrier on the highway. If my brakes had engaged automatically, I could have slowed down enough to avoid the collision altogether. And if they had engaged manually I could have at least minimized the damage to my vehicle (and myself) because I wouldn’t have hit the concrete barrier as well.

Customer of Hyundai 4 years now. Issues with the forward collison-avoidance assist (fca) on my 2025 tuscan, malfunctioning, aggressively breaking, fantom breaking when absolutely no imminent collision will happen, causing other drivers to come within inches of a rear crash with me, also the same fantom breaking while parallel parking. The breaking causes me to be thrown towards my windshield. Made appointment with a Hyundai service they inspected on a diagnostic machine and no recommended "codes" were available after test was done, no repairs made they said my car is fine. Happened again within 2 blocks of service center please help.

I was travelling east in the left kane on the southern state parkway in long island, NY. The car in fron of me stopped short. I had plenty of time to slow down, then my car brakes locked up and I was almost rearended. Fortunately the driver behind me was alert and moved to the shoulder to avoid contact.