2024 Hyundai Tucson driver assistance problems

Filed Oct 15, 2026 · Acceleration, Driver assistance · MD

I am submitting this complaint to report a potential safety concern involving the Forward Safety (Collision-Avoidance) System and Smart Cruise Control System in my Hyundai vehicle. I am concerned that these warnings may indicate a problem with safety-related driver-assistance systems, and I want to bring this issue to the federal safety agency's attention so it can be evaluated for potential risks to other vehicle owners. Vehicle and diagnostic information as - Make: Hyundai - Model: Hyundai Tucson SEL FWD - Model year: 2024 - Purchase date: March 2024 - Odometer reading: 24,359 miles - Diagnostic Trouble Code (DTC): C174181 - System identified in Bluelink: Chassis - Date the code originated: October 13, 2026 Description of the problem My vehicle's dashboard displayed the following warning messages: - Check Forward Safety System (Collision-Avoidance System) - Check Smart Cruise Control System On my Hyundai Bluelink account also displayed an “Attention Needed” notification identifying one chassis diagnostic trouble code, C174181, originating on October 13, 2026. These warnings concern systems intended to assist with collision avoidance and vehicle following distance. I am concerned that their malfunction or unavailability could reduce the vehicle's driver-assistance capabilities and potentially create a safety risk while driving. I am reporting the symptoms and diagnostic code for the federal safety agency's evaluation; I do not yet know the underlying technical cause. My primary concern in filing this report is vehicle safety. I request that the federal safety agency record and evaluate this complaint and determine whether similar reports involving Hyundai vehicles indicate a potential safety-related defect that warrants further investigation. I am submitting this information to help identify any possible recurring problem that could affect other drivers, passengers, and road users. I can provide screenshots from Bluelink, warning-message photographs, repair orders and additional diagnostic information if needed. Thanks

Filed Jun 15, 2026 · Brakes, Driver assistance · VA · crash

Automatic emergency braking stopped the vehicle because another vehicle in front turned right.

Filed Apr 14, 2026 · Brakes, Driver assistance · CA

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)

Filed Mar 21, 2026 · Driver assistance, Electrical · FL

While operating the vehicle, an intermittent audible warning sound occurs without any corresponding alert, message, or notification displayed on the dashboard or infotainment screen. The specific component or system causing the warning is unknown. The vehicle is available for inspection upon request. This condition puts my safety at risk because the unexplained warning sound occurs while driving and causes me to divert my attention from the road in an attempt to identify the source or meaning of the alert, creating a driver distraction. The issue has been reproduced multiple times under normal driving conditions. I demonstrated the condition to the dealership and provided video evidence; however, the issue has not been diagnosed or confirmed, and no root cause has been identified. The vehicle has been inspected by the dealership, but no explanation or resolution has been provided. The manufacturer is aware of the issue through an open case. There were no warning lamps, messages, or prior indicators associated with this condition. The audible warning occurs without any visible alert or explanation. The condition began shortly after purchase in November 2025 and was later documented and demonstrated to the dealership in January 2026.

Filed Mar 5, 2026 · Brakes, Driver assistance · CO

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.

Filed Jan 22, 2026 · Brakes, Driver assistance · MA

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.

Filed Jan 9, 2026 · Driver assistance, Electrical · MO · crash

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.

Filed Nov 15, 2025 · Brakes, Driver assistance · TX

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.

Filed May 9, 2025 · Airbags, Driver assistance · SC

My wife and I purchased a 2024 Hyundai Tucson in June. Since February 28, 2025 the SRS indicator lights have come on twice. Hyundai replaced the airbag twice. In March, the emergency brake system red lights illuminated, and the car came to an abrupt stop. Luckily, there were no Cars behind me. Seconds later, the car resumed, and the lights disappeared. Hyundai dealership took the car in and returned it in two hours noting they could not duplicate. Several days ago, the same thing happened with the emergency brake system. Driving at approximately 40 mph the car slammed on brakes and the dash illuminated again. No cars behind me. The dealership returned the car once again, noting they could not duplicate.  The car has less than 8000 miles.  I won’t allow my wife to drive more than 10 miles alone.  It’s unsafe. The manual states the car is not to be driven with any of the sys indicators on and to do so would cause serious injury or damage to the car.  I will send attachments of invoices, the federal safety agency complaints and Hyundai manual info about unsafe condition.Â

Filed May 6, 2025 · Airbags, Driver assistance · SC

Owner [XXX] [XXX] . Driver [XXX] [XXX] ) [XXX] All of a sudden my 2024 Tucson vin: [XXX] gages indicated emergency braking for about 1 to 3 seconds and the front end went down ,(my wife and I went foward ) as though I was stopping (scared me ). It was the forward collision avoidance sys. I was so happy no one was behind me. Avoided a rear end collision. [XXX] we were Traveling west in the left lane of a three lane highway. I released the gas pedal to make a left turn in a left turn lane. The light was red. No one really behind me or to my left. Only one car to the right of me in another lane. This is dangerous! This is my wife’s car. Enough said!!!! Car was at the dealer for a couple of hours. They could not duplicate. Said it could have been my floor mat “that made my emergency lights come on the dash.” “STUPID” This occurred the day after picking up my car from the dealer. Feb. 28, Hyundai replaced the Air bag. STS light came on. Picked the car up Monday. Today [XXX] Thursday) the STS Airbag light came on again. The bag was replaced again. [XXX] the front collision sys emergency stop sys alerted again. Again, Hyundai declared they could not duplicate. This is an unsafe car. A death trap. Hyundai warns death may occur if using while driving can cause death. They also warn us using the emergency brake while driving may damage the brakes or cause a collision. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)