2022 Hyundai Tucson: adaptive cruise control problems

Filed Aug 2, 2026 · Driver assistance · PA

Unintentional and unexpected activation of emergency collision or adaptive cruise control, causing the vehicle to stop and become immobile in the lane of traffic. I was driving down the interstate with the adaptive cruse control on and the lane keeping assistance on. These both were on for about 20 minutes as I was driving down the highway. There were no vehicles in front of or behind me for a quarter mile or so. I as all alone with nothing around me. All of a sudden it seemed like the collision avoidance system activated. The car came to a complete stop in the right lane of the highway. I tried to proceed and could see the emergency brake was on, the engine was running the car was in drive but it would not move. Flipped on the hazard flashers and traffic caught up to me while sitting in the right lane of the highway waiting to get rear ended. Vehicles were barely getting by at 70 MPH. The car would I pressed the accelerator and the car move d forward enough to get off the highway, this took a minute or two. Once off he highway, I could see the emergency brake would not release. I turned the engine off went out to inspect all the forward sensors. There was no visible issue. I restarted the car after a minute or so and it proceeded normally. That was Saturday, this is Sunday, I am taking the vehicle to Hundai tomorrow for inspection.

Filed Jul 10, 2026 · Brakes, Driver assistance · IL

When driving have been reviving a warning that says adaptive cruise control failure followed by a short time were the car may unexpectedly break on the interstate.

Filed Jan 29, 2026 · Brakes, Driver assistance · TX · crash · 1 injury

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.

Filed May 28, 2025 · Driver assistance, Electrical · MO

What component or system failed or malfunctioned, and is it available for inspection upon request? > While driving, the following systems fail and become inoperable sporadically: blind-spot safety system, tire pressure monitoring system, smart cruise control system, lane following assist system, speed limit warning system, shifter system malfunction, infotainment system, HVAC controls and turn signals. How was your safety or the safety of others put at risk? > I lose access to all safety systems and am unable to see anything on my dashboard while every single light flashes on the dash. Being unable to utilize my turn signals is dangerous because I must restart the vehicle for the issue to be resolved. Has the problem been reproduced or confirmed by a dealer or independent service center? > The problems were confirmed - but NOT reproduced by the Hyundai certified service center. They stated that they can see logs of the issues and were unable to diagnose the specific failures without the warning lights being actively present. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? > Yes. It was sold to me as a Certified Pre-Owned vehicle directly from a Hyundai dealership. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? > The warnings and failures appeared at 64,752 miles, which is less than 5,000 miles after the warranty coverage ended. I purchased the vehicle with 64,300 miles. The issues began less than 500 miles after purchase.

Filed Mar 27, 2025 · Fuel system · NC

September 15, 2024 while driving with cruise control set at 65mpg, the 2022 Hyundai Tucson began shaking and experienced an abrupt loss of power. I released the cruise control, and the vehicle wouldn't accelerate over 45 mph without shaking severely. September 16, 2024 car was inspected by a dealership and determined it was the 4th cylinder fuel injector; mileage on the vehicle was 45,314. Repairs were made per a TSB P030X. January 27, 2025, while driving with cruise control at 60mph, the same thing happened again. Managed to get the car to another dealership, only to find out all 4 fuel injectors needed to be replaced; this time with a TSB 25-FL-001H kit; mileage was 50181. Approximately March 11, 2025 car started the same issue, only this time there was no abrupt shaking or loss of power, however very strong smell of fumes. I refused to park the car in my garage, and immediately called Hyundai USA with all of this information from the start of these issues until current. The car was then taken to another dealership with mileage at 51332, only a difference of 1151 miles since last issue. This time all of the fuel injector seals are melted. Hyundai USA refuses to do anything about it. It was verified with the service technician this last time, that raw fuel was leaking onto the hot engine and could have resulted in the car catching on fire. The first two times this happened, I was out of state while being broken down.

Filed Dec 5, 2023 · Transmission · 670 miles · NJ

The contact owns a 2022 Hyundai Tucson. The contact stated while driving 40-50 MPH, the transmission was shifting hard, and was upshifting and downshifting independently. There was no warning light illuminated. The contact stated that the failure had recurred several times while driving. The vehicle was taken to the dealer, where it was test-driven, but the failure could not be duplicated. Additionally, the manufacturer sent a field technician out who could not duplicate the failure. The manufacturer then informed the contact that the vehicle was not experiencing a failure. The contact also stated that while driving 50 MPH, the Forward Collision Avoidance: Automatic Emergency Braking system engaged while there was no vehicles or objects nearby. The contact depressed the brake pedal to reset the vehicle, then depressed the accelerator pedal and continued driving. The contact stated that the failure recurred several times while driving. The contact stated that he was driving with the Adaptive Cruise Control mode engaged. The contact stated that while changing lanes, the vehicle failed to accelerate as needed. The contact stated that he disengaged the Adaptive Cruise Control and depressed the accelerator pedal to drive at highway speeds. The contact stated that the failure recurred on another occasion, then the vehicle independently accelerated to 80 MPH temporarily. The contact stated that while driving uphill and depressing the accelerator pedal, the vehicle failed to respond and decelerated. The contact was able to continue driving. The vehicle was not repaired. The failure mileage was approximately 670. The VIN was unavailable.

Filed Apr 14, 2023 · Driver assistance · CT

Driving on highway long distance on sunny days the radar becomes blocked disabling critical forward safety functions and cruise control. Numerous times this has caused a near collision due to the automobile malfunctioning. Many times my cruise control has just stopped working and my vehicle has rapidly decreasing speed, causing people behind me to have to slam on their brakes. My vehicle has also automatically braked on the highway when there was no one in front of me. these are just two incidences that have nearly resulted in collisions on the highway. This has been occurring since I purchased the vehicle in September 2022. Unfortunately, dealership has not been able to duplicate what has occurred.

Filed Mar 8, 2023 · Engine, Transmission · GA

I was driving on the highway with my ACC (Adaptive Cruise Control) and Lane Keeping Assistance on. Suddenly, I heard a loud noise from the engine. My vehicle was slowing down and was not able to accelerate. As I was pulling my vehicle on the side of the road, I saw oil warning light and check engine light on at the dashboard.