2024 Hyundai Tucson acceleration problems

Filed Nov 4, 2026 · Acceleration · NJ · crash · 1 injury

The contact owns a 2024 Hyundai Tucson. The contact stated that upon shifting to drive(D) and slightly depressing the accelerator pedal to drive out of the Car Wash, the vehicle unintendedly accelerated to approximately 40 MPH, went sideways and crashed into a telephone poll after making a right turn. The contact stated that the air bags deployed as needed. The contact sustained cuts and bruises, and soft tissue damage on the left arm and left side of the back. The contact received medical assistance. A Police report was filed. The vehicle was towed to J & A Auto. The vehicle was deemed a total loss by the insurance company. The failure mileage was unknown.

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 Jul 19, 2026 · Acceleration · NY

This has happened twice now. When going at a low speed, once in traffic, once while performing a U-turn, while braking, the car is trying to accelerate. I have to practically stand on the brake pedal to avoid the car lurching forward. I saw no warning lights on the dashboard. I haven't yet brought the vehicle to a dealer or service center, but it will be.

Filed May 10, 2026 · Acceleration · NJ

The Manual Speed Limit Assist, or MSLA, feature unintendedly activated while I was driving, nearly causing a collision. I was initially unable to deactivate this steering-wheel based feature, as: (1) I did not intentionally press any buttons to activate it, and: (2) I had to balance the need to visually monitor other vehicles on the highway to avoid a collision and simultaneously figure out how to cancel this feature, which places a limit on the speed that the vehicle can travel. Instead of claiming that this feature malfunctioned, I am claiming that it is an egregiously, poorly designed and dangerous feature. The button to activate it is located on the steering wheel; consequently, a driver can easily activate it without meaning to do so. This inadvertent activation happened to me twice, each time impeding, however briefly, my ability to safely navigate a busy road. This feature was not identified when I purchased the vehicle; however, earlier this year Hyundai belatedly sent a letter to its customers titled "Understanding Manual Speed Limit Assist (MSLA) Feature," pointing out how to activate and disengage the feature (and providing a link to a website for a tutorial with more information: [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 15, 2025 · Acceleration · 40,000 miles · AR

The contact owns a 2024 Hyundai Tucson. The contact stated that while operating the vehicle, the manual speed limit assist erroneously activated causing the vehicle to suddenly decelerate, and the vehicle failed to exceed 20 MPH. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 40,000.

Filed Feb 5, 2025 · Acceleration · WI

Sudden loss of speed for no reason. was traveling at 35 mph when vehicle suddenly dropped to 22 mph. Stepped on gas with no response. I know the 22 mph because it showed up on warning illuminator. Car behind me almost hit me because he had no indication (prior warning). Turned off at closest exit, turned vehicle off then on restart things were normal. Took to dealer and they found nothing in computer code or mechanical to explain why this happened. Am an older women afraid what will happen if repeats on highway going 70+ mph. Please made Hyundia find and fix.

Filed Oct 15, 2024 · Acceleration, Driver assistance · OH

Forward radar sensor pass side lower grill/bumper area. 1st told a sensor recall but after 3 hrs and then seeing the vehicle in the shop with the entire front bumper clip removed the sensor was out of its driver side socket and 1 side flopping around which may have caused a small dimple from the inside to pop out on the 6x5 cover that is the entire lower rubber/plastic black bumper/grill. Told the vehicle was hit, YET no visible damage to bumpers or painted surface can be found by their 2 dealerships and their 1 body shop, + 2 mangers, and 1 independent collision shop.1 manager drove the vehicle 10/11 and stated after "is operating as it should". Warnings have come on again since then refueling at additional 77 mile and then at 92 miles 10/14. Hartford ins has been notified and pending I hope an inspection. Vehicle purchased 1st March 2024, 1st warning at 5336mies currently at 5421 miles. They triggered the service engine light and stated via onboard computer it was an issue with a lower front driver side radiator something that may have been bumped while taking off the front clip, which they chipped and area and left a bit of gap at the fender connection. Other than the small dimple on the plastic from what I believe the sensor had been bouncing against, there is no damage. A safelight windshield company stated there is a notice/recall on the "auto headlight sensor on dash" but they do not cal them, only the optic sensor top center of windshield. BUT per the manual that top sensor plus lower radar can control the forward crash, cruise setup and auto braking. Need some help since my firm works with all auto/tire mfg and conducts DOT tire testing for USA and worldwide independent firms/gov's.

Filed Aug 6, 2024 · Acceleration · 8,800 miles · PA

The contact owns a 2024 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle was hesitating during acceleration. While accelerating, the vehicle failed to exceed 3,000 RPM. Thee contact stated that while driving 45 MPH, the vehicle decelerated to 25 MPH independently while depressing the accelerator pedal. The automatic start button remained illuminated. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 8,800.

Filed Jul 31, 2024 · Acceleration · FL

While slowly pulling into a parking space at a local shopping center, my 2024 Hyundai Tucson Limited suddenly accelerated while I still had my foot on the brakes to stop. The acceleration was so sudden and intense that I had to swerve to avoid a head on collision with a car parked in front of me. It took me a few seconds to gain control of the car, as the engine was revving at a high acceleration rate and the brakes were not working as they should. Just as suddenly as it happened, it then stopped and I was able to regain control of the car. Had there been other cars in the parking slots nearby, there would have been no to way to avoid a collision.

Filed Jul 9, 2024 · Acceleration · PA

When I need to car to accelerate, sometimes it will, and other times I have to push on the gas pedal all the way to try to accelerate. This is extremely dangerous when pulling out in traffic as I am never sure when the car will be working correctly the car shows no codes that there is something wrong, the mechanics cannot figure out what is causing the lack of acceleration. I can be at a red light and try to accelerate and I would have to push the gas all the way down to even get it going. This is an inter written problem, but very concerning when I am trying to cross traffic as I am never sure what my acceleration is going to be.