Automatic Emergency Braking Problems of Hyundai Tucson - part 2

I started to accelerate from a full-stop to turn left at arrow onto highway ramp and car's emergency brakes came on with a real jolt - almost rear-ended by semi behind me. So scary. So dangerous. Backache, now, too.

See all problems of the 2025 Hyundai Tucson 🔎.

The automatic emergency braking system, I think it may be called (or is a part of) the forward collision avoidance system by Hyundai, triggered incorrectly while on interstate 265. My car was travelling at about 35 mph on the off ramp when the automatic emergency braking system triggered and cause my car to rapidly decelerate to a near standstill. The vehicle following behind me had to swerve into another lane to avoid hitting my car. The problem has not been reproduced or confirmed by a dealer or service center. The component has not been inspected yet, but we will be bringing it to the dealer in the near future. There were not warnings or messages that this was about to happen other than the emergency sound and light when the automated emergency braking engaged. This has happened twice before on other roads and in other situations with this car.

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.

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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.

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at various speeds, the vehicle experienced intermittent phantom braking; the vehicle violently and suddenly slammed on the brakes with no obstructions present, causing the contact to sustain shoulder and back pain on several occasions. The contact did not seek medical assistance. The contact stated that the failure had progressively worsened. Additionally, the contact stated that the standard Smart cruise control (scc) disengaged while driving. The contact stated that the failure had been intermittent, requiring the driver to manually re-engage the cruise control mode. There was no warning light illuminated. The dealer was notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 5,000.

The automatic brake system triggers when there is no obstacle. It has caused the car to stop suddenly in the middle of the road and almost become rear ended several times. We took it to the Hyundai service center and they said they’ve had complaints of this before but checked the system and don’t see any issues.

My wife was slowly pulling into a parking spot, when at about 10ft from curb the car suddenly accelerated faster than she even thought the car even was capable of (the awd likely helped). It hopped the curb and hit a tree. She backed it up to the parking spot (it acted normally) and had it towed to dealer. In hindsight, the car had been having a progressive amount and frequency of delay in normal acceleration, sometimes having a pause of up to second or two from pedal input to car response. We asked the dealer to check the edr (event data recorder). The tech first said he didn't even know what that was, then that he checked with all his fellow techs and they didn't know either, then the story changed to the model not having an edr. We politely told him which page in the Hyundai manual he can find it, and he refused to look, as did his boss. Car was transferred to a body shop, and disposition was to total the vehicle. While the body shop was still evaluating the car, we contacted a second dealer, who said they don't have a reader. I inspected the floormats before the car was towed, as that was an initial suspect, but it was locked in and clearly there was no obstruction. She was wearing tennis shoes and doesn't recall ever having an instance of hitting the wrong pedal in any vehicle. She thinks she was only coasting, not even touching the brake yet.

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My wife was driving our Hyundai Tucson on the city street at about 35 mph. She signaled left to get into a turning lane. The turning lane has two lanes and is very long. She got into the turning lane and the traffic in front of her stopped. The car's collision avoidance system activated and slammed on the brakes even though the vehicle was not very close to the cars in front of her. As a result, a vehicle behind her rear ended her causing over $9,000 in damage. This car has done this before on the highway and city street. The collision sensitivity setting was on normal and had been since we got the car and until the accident. I had also been driving the car when the collision avoidance activated. The problem with this car is that it only knows to slam on the brakes and results in getting rear ended. It does not gradually apply the brakes even when the car in front is not very close and locking up the brakes is not necessary and is actually unsafe as shown when my wife was in a rear collision accident. This is a major safety problem and needs to be looked into.

Vehicle randomly activated automatic emergency braking and the forward collision warning with no other vehicles in sight. The vehicle slammed on the brakes almost causing a trailing car to rear end our vehicle. This has happened 5 times with speeds between 40 and 80 mph over the past 4 weeks. Conditions were cloudy. Problem has not been reproduced by the dealorship. No inspections have occurred.

The automatic braking was inappropriately applied while I was coming to a controlled stop on a 45mph stop light intersection. I was already slowing down and about 30 feet behind the car in front of me the collision avoidance warning starting going off, slightly applied brakes (to the additional amount I was already applying) then slammed on the brakes to a complete stop. There was some teen behind me who wasn't paying attention, and obviously no one expects the car in front of them to slam on their brakes 30 feet behind the cars in front of them, then plowed into back end of my car. This isn't the first time it's happened and I wasn't even at risk of collision as I was already slowing down in the other instances. But this time it caused an accident and injury. I am suffering from whiplash and possible herniated disk. The system is on the late setting as well but is still dangerous to drive. There needs to be a firmware update or sensor recall, this is very dangerous!.

The contact owns a 2025 Hyundai Tucson. The contact stated that while his wife was driving at various speeds, the imminent crash braking failed to function as intended. The first time that the failure occurred, the contact's wife was driving in the rain, and a beeping sound was coming from the vehicle, and the vehicle stopped independently. The vehicle returned to normal functionality after several minutes. The contact stated that on a separate occasion, while his wife was driving in slow traffic, there was an abnormal beeping sound coming from the vehicle before the vehicle independently stopped. No warning lights were illuminated. The vehicle returned to normal functionality minutes later; however, the failure persisted. The vehicle was not taken to the dealer or an independent mechanic, and the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 1,000.

2 times, while driving 35-40 mph, the vehicle automatically slammed hard on brakes to full stop without any danger or other vehicle near, causing neck pain/whip lash. 3 days ago, I attempted a u-turn in busy intersection, suddenly the vehicle braked hard and came to full stop without any danger near. The dash lights lit up, the vehicle stalled. I was in middle of very busy intersection. It would not move forward. I reversed just in time to miss being slammed into by fast moving oncoming traffic.

We were driving on i4 in stop and go traffic. Our speed was under 25 mph and we were over a full car length back from the vehicle in front of us. I was actively braking to come to a stop due to traffic and the forward collision / emergency braking kicked in and stopped us immediately. This caused a car behind us to almost hit us and cause an accident due to sudden stopping. This happened 3 separate times within a 30 minute timeframe with 2 different cars behind us. The system will take control of braking the car and the steering wheel, and will not always give it back immediately to be able to continue driving. This has occurred previously when slowing down due to someone turning in front of us just in every day driving, and has almost caused a wreck then as well. Our local Hyundai dealer said there was no recall or issue with the system. This is dangerous and going to cause an accident sooner or later.

On numerous occasions (over 20) the forward collision system just slams on the brakes to a full stop, there was nothing close enough to vehicle to cause this issue. Sometimes it’s caused by rain or wind, sometimes for no apparent reasons. One time it caused a no damage accident as person behind me tapped my bumper. In traffic it is set off often with nothing within a safe distance away. There was no obstacles or sudden movements from other vehicles around me. I have brought the car back too Hyundai 3 times only to tell me either a dumb excuse or nothing is wrong with vehicle. I have seen on forums there are a lot of incidents with this particular car we have serviced the vehichle 3 different times over this issue and were told there is nothing wrong with the vehicle accident happened in summer so I will say there was a crash in additional details but last date occurrence of automatic stop was this morning.

I was driving on the road this morning approx. 25 mph (clear road, no rain, snow etc. ) the car came to a full abrupt stop. Collusion/warning notification never came on (there was nothing in front of me) seatbelt locked. Car would not move. I put the car in park and had to turn the car off and back on to get the car to move. This honestly scared the life out of me. I had several cars behind me that could of rear ended my car and caused serious harm to myself or other drivers. I called the dealership (will be dropping off this evening) but they made it very clear that if they can not duplicate the problem there is nothing that they can do. The car has 8,000 miles on it and was purchased in April 2025.

At high speeds above 40 mph vehicle automatically brakes with no vehicle or objects in front while vehicle is in operation. Very concerning when driving on interstate.

Multiple times my vehicle has come to a complete stop unwarranted. There have been multiple instances of the automatic braking triggering on michigan left hand turns with no traffic oncoming. This was reported to the dealer and they found no issue, however it has happened again since. The vehicle has also multiple times come to a full stop in heavy traffic when I was already braking and a full stop was unnecessary. There were two instances from this where I was very nearly rear ended, including on the expressway. There were no warnings that the system was malfunctioning.

Forward collision alert system has slamed the breaks on for no reason. The vehicle begins abruptly stop for no reason. On two of the occasions I was almost rear-end by following vehicles. The system needs to be recalled.

While driving at speed in heavy traffic, I quickly merged from the right lane to the left lane to avoid an obstacle. My vehicle and the new vehicle in front of me (in the left lane) were traveling at approximately the same speed, although there was an admittedly small (one half car length) distance between us. My forward collision assist inaccurately identified this new vehicle in front of me as a sudden danger that I was going to hit. It immediately applied full braking power and played the forward collision alert sound. This aggressive and unexpected stop spilled and broke items in my car as they slid, roughly strained me against my seat belt, and caused the vehicle behind me to aggressively brake. A rear end collision was narrowly avoided, only due to the fast reaction of the driver behind me. This aggressive and dangerous forward assist and emergency braking can only be temporarily disabled for one drive, and resets every time the vehicle is turned on. I have not had my vehicle inspected for this issue, but communities on the internet have confirmed that this is a common problem.

I was backing out of my driveway, which is on a busy street. I waited for the traffic to clear. I backed out onto the main road, which I thought was completely clear, but a car came behind me and I smacked right into him. There was no beeping from my car, and the automatic braking system did not engage at all. The rear of my car, particularly the driver's side, was severely damaged. The other car's passenger front door was badly damaged. The side curtain airbag on their car deployed and their vehicle (Volvo station wagon) was not driveable. The emergency braking system frequently engages unexpectedly when I back out of my driveway, even when there is no hazard. The unexpected braking is oftentimes dangerous. However, this time, when I needed it, it did not engage. An outside diagnostic inspection was done on the vehicle, and showed "no event. " if you saw the cars involved in the accident, it is clear there was a significant "event. ".

See all problems of the 2023 Hyundai Tucson 🔎.

Approximate date 10/7/2025. Driving 20mph clear daylight sunny conditions in right lane,another vehicle in left lane put on right blinker to merge in front of me into my lane. The merging vehicle was 3 car lengths ahead and had plenty of space to merge. Merging vehicle was only half way into right lane when without touching the brakes and no warning alarm the wheels locked up completely,skidding to a complete stop,almost got rear ended. 2 days later on 10/9/2025 same weather conditions while driving on highway the traffic was stop and go,speed 40mph. A vehicle ahead of me applied their brakes,no imminent threat, I placed my foot on brake pedal as a precaution,then brakes locked up so I pumped brakes thinking what else could I do? this did nothing,brakes remained locked until vehicle stopped. Almost got rear ended again. I can’t remember if any audible alarm or dash warning. These were the only 2 incidents with braking failure. Hyundai dealer booked appointment but they could not find any issues with the braking system on 10/2025. Mechanic could not reproduce braking issue. When I picked up vehicle I spoke to the mechanic. He said “ if the braking issue occurs again please make another appointment. The salesman who I purchased the vehicle said “shut off the warning system”. Which I declined his offer. Thank you!.

While trying to pull out of driveway it will hard stop like im going to hit something. I can be driving thru town and all the sudden it will try to stop abruptley. It does it often. Took to shop and all they would say is all systems work like they are supposed to. My font collision light comes on all the time with some times staying on for a few days. I have tried to wipe it off with no luck keeping it clean. I drove it off the lot turned around asnd they had to replace a head cause it stuck open. Runs funning.

I was driving on a highway in the largest city in the world and while vehicle merging into my vehicle, Hyundai Tucson automatically and abruptly engaged emergency forward collision. There was absolutely not necessary. All loose items in vehicle went flying inside of my car. My body went forward as well as my passengers. Luckily I was not rear ended in an accident. This is the third incident of the vehicle automatically engaging safety features which actually does the opposite and is a hazard, since I bought the car in Feb 2025. There is no way to permanently disable these features. A driver not being in control of their car is a huge liability on the road. This vehicle must be recalled to disable this feature. Perhaps in a rural area somewhere in the world with no other cars around , this wouldn’t be an issue. Large cities with vehicular and pedestrian traffic it is a danger.

Under two occasions I was driving on the highway at a safe distance from the car in front of me and my car emergency braking system triggered and went off and caused my car to stop in the middle of the highway. This caused a collision behind me. There was no reason on either occasion for the braking to bring the car to a hault.

At least 5 times now when no car was breaking extremely close to me or when I gently touched the breaks the automatic emergency breaking kicked in and slammed the car to a stop. Twice the car behind me had to swerve out of the way and hit another car causing 2 accidents without my car being involved. Once it caused me to hit my head on the steering wheel. This function is more destructive and dangerous than helpful. At no time should my car go from 70 to 0 in a second for no reason, but with this it does. Got the car in the March 2025 so 5 times in 7 months.

9/26/25. Friday late afternoon at 5pm. Driving on the southern state parkway in stop and go traffic…. The traffic opens up and we start driving to about 10 mph, with no emergency present and the car did an emergency stop on it’s own. Frightening experience…it’s amazing we didn’t get rear-ended. This is the third time this happened, but I only documented this time.

I was driving on a clear day with no traffic in front of me, going approximately 35 miles an hour. My car abruptly took over the braking and suddenly stopped the car in the middle of the road. The cars coming from behind me had to swerve into the other lane to avoid a collision. It was terrifying. I contacted the dealer was told they had never heard of this happening and I probably had something stuck to the front of the camera. I said it wasn't the case and they said it was just an isolated incident and explained how I could disable the system each time I drive the Tucson if it made me feel better. There were no warning lights or other symptoms prior to this episode. They said I could bring it in and they could take it apart to look at it, but I would have to leave it for about 3 days, however they didn't think anything was wrong with it. Since they said they couldn't fix it, I didn't take it in and just disable it each time I get into the car.

The computer(s) responsible for many of the safety systems have faulty software. The computer vision system incorrectly assess condition of the roadway and issues warnings that obscure the instrument cluster. The computer vision system also incorrectly determines that a collision is imminent (despite no obstacles being present) and activates the braking system. Hyundai has been aware of this issue since 2022 and has previously released a software patch to correct it. However, unpatched vehicles are still being sold (and resold) by Hyundai dealerships without being fixed because Hyundai has chosen to rescind the availability of the update. Unpatched vehicles are on the road preventing drivers from properly monitoring vehicle operation as a result of the continuous warning obscuring the cluster and are jeopardizing the occupants and other road users when the vehicles spontaneously initiate panic stops for phantom obstacles. Hyundai refuses requests to provide the existing update files because a future update with an uncertain release date is planned; release of the "upcoming" update has seemingly already been delayed 8 months.

My car stopped due to the emergency braking system when a car slowed down in front of me. There was no danger of me hitting them, we were in a turning lane proceeding slowly through a green light. My car stopped and wouldn't start moving again for more time than the person behind me would have expected. This isn't the first time, but it's my first time reporting it. I'm worried that I'm going to be hit by another car at some point.

This is a very real safety concern. On multiple occasions, the automatic emergency braking (forward collision avoidance assist) feature of my 2025 Tucson hybrid was activated in a completely unnecessary situation, endangering myself and drivers following behind me. If a car in front of me brakes suddenly, or a car merges quickly into my lane, which happens all the time as everyone has experienced, my car takes it upon itself to fully slam on the brakes without warning. Each time, it was in a situation where I could have easily slowed the car down incrementally so as to not put drivers behind me at risk of rear-ending my car. This feature can be temporarily disabled in settings, but it automatically reactivates when the car is turned off then back on. This is a crash waiting to happen and it is unsafe to drive in its current state unless the feature is turned off manually every single time I start up my car. At the very least, there must be a permanent way to turn of fca.

During a recent accident, the driver pressed the brakes but they did not respond, almost as if they locked up. Police at the scene noted there were no skid marks on the road, suggesting the brakes never engaged. The vehicle suffered major side impact damage, including broken windows and crushed passenger-side doors, but none of the airbags deployed. This raises serious concerns about a possible brake system failure and airbag non-deployment defect. The vehicle has not yet been repaired and is available for inspection. Police have reviewed the accident, and the insurance company has also seen the vehicle, but no mechanical inspection has been completed by the manufacturer. There were no warning lights or error messages prior to the failure. The safety of the driver and passengers was put at risk because the car could not be stopped and the airbags did not deploy to provide protection.

On two different occasions (the 2nd one happened today), the automatic emergency braking system has deployed. The first time, I was in the right lane and a car passing me in the left lane pulled in front of me. I softly applied my brakes as that was all that was required. The automatic braking system then slammed on the brakes unnecessarily - causing the car behind me to almost hit me. Then, today, I was driving down the road and the car ahead was taking a right turn. Again, I softly applied the brakes. Then - the automatic braking system slammed on the brakes. No one else was near by so it there was no accident - but if there had been a car behind me, it would have likely hit me. This is twice that the automatic braking system was activated unnecessarily and much too hard - almost causing an accident.

I was traveling on [xxx] in nashville. There was a motorcycle speed trap on the right shoulder so I moved over to the left. The car in front of me also moved to the left and my car slammed on the brakes and came to a complete stop on the highway. I was badly rear-ended causing $12,500 in damage. This has happened 2 other times to me since then. This seems to be a consistent problem with the 2025 Hyundai Tucson. I'm fixing my car and selling it as I don't feel safe. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Automatic brakes are deploying with no apparent hazard.

There are several electrical issues occurring that have put me in danger when driving. First the screen both on the windshield and the speedometer screen randomly go out completely and I have no idea how fast I am going or any other important features like how much gas my vehicle has, if the vehicle is over heating. The forward/ break feature has gone off multiple times and the vehicle has stopped in the middle of traffic and the freeway with zero warning and with several car lengths between me and the car in front of me. Almost hit from behind when this happens and has put the vehicle in park on the freeway. Steering wheel has jerked to the side when driving making the vehicle almost hit curbs and other vehicles. Has come back to my vehicle that is off and locked and the ac has been running causing the engine to be hot. All the warning lights have turned on and won't go off even after stopping and restarting the vehicle. The vehicle is currently at the dealership with them having to answer to the problem, stating Hyundai is aware of the issues but does not know how to fix it. I bought the car in April 2025 and there is just under 2800 miles on the vehicle.