2024 Hyundai Tucson: check engine light

Filed Jul 7, 2026 · Engine, Fuel system · VA

Subject: Urgent Drivability Concern – 2024 Hyundai Tucson (6/22 Incident) Vehicle: 2024 Hyundai Tucson Date of Incident: XXX Trip Details: [XXX] to [XXX] (~160+ miles) Summary of Issue: During a long-distance drive on XXX, the vehicle experienced severe and consistent drivability issues that created unsafe driving conditions. Symptoms Observed: •Severe loss of acceleration / stalling behavior throughout the entire trip •No check engine light illuminated at any time •When pressing the accelerator: oTachometer increased (RPMs rising) oVehicle speed decreased or failed to increase appropriately •Significant delay in acceleration, especially when: oMerging onto the interstate oPassing other vehicles •Cruise control behavior: oSeemed to manage acceleration more effectively than manual throttle oHowever, still exhibited slow response when additional acceleration was required •Auto Start/Stop system: oSystem automatically disabled itself oWould not allow reactivation during the trip Safety Concern: This condition made it difficult and unsafe to: •Merge into traffic •Maintain appropriate highway speeds •Execute passing maneuvers Dealer Visit (Near [XXX]): •Vehicle was inspected after sitting for a couple of hours •Dealer reported no issues found •However, the problem was persistent and clearly present during operation under driving conditions Took vehicle to a dealership in Raleigh and asked that they look at the fuel injectors. They determined that all 4 injectors were failing and replaced them under warranty. Concerned that Hyundai America has not issued a recall as driving the vehicle with this issue creates a serious safety concern that would lead to injury or loss of life INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 20, 2026 · Engine, Fuel system · MT

While driving at approximately 70 mph on a highway under normal conditions, the vehicle experienced a sudden loss of engine power. A check engine light illuminated at the time of the failure, and the vehicle was unable to maintain normal acceleration or consistent speed. The loss of power created a hazardous situation in active traffic, as the vehicle could not safely maintain speed with surrounding vehicles. The vehicle was later inspected by an authorized dealership, which confirmed severe internal engine damage, including cylinder damage and engine misfire requiring major repair or replacement. No clear root cause has been provided. There were no prior warning signs or symptoms before the incident. WARNING SIGNS PRIOR TO FAILURE: NONE OBSERVED. The vehicle is available for inspection upon request. DEALER CONFIRMATION: YES. MANUFACTURER INSPECTION: UNKNOWN.

Filed Mar 2, 2026 · Engine · NJ

On October 8, 2025, my car's tachometer started to dip and my car began to shake like it was going to stall as I approached a traffic light. The check engine light came on. I was close to my destination (about a 1/4 mile) so I drove to the parking lot and turned off the car. I started it again and the check engine light turned off and the car was running fine. On October 13, 2025, I took my car in for a routine oil change to a local repair shop and when they tried to reset the oil change reminder, the system would not work. Within a day, the entire computer system for the radio, warning systems, air conditioner/heat, etc, would not work. I took it to Burlington Hyundai on October 15, 2025 and they had to replace the CPU in the car. I got my car back on October 22, 2025. They said the check engine light did not come on again. It was covered under my warranty. I had my brakes replaced while they had the car out of convenience.

Filed Mar 2, 2026 · Engine · NJ

On Saturday January 31, 2026, I was driving and the tachometer started to go low like the car was going to stall out and the car began to shake. Then the check engine light came on. I was afraid to drive it, so I parked it in a church parking lot and had it towed to Burlington Hyundai on Sunday February 1, 2026. On Monday February 2, 2026 Burlington Hyundai said there was a problem with the spark plugs and that was why the check engine light came on. They replaced the spark plugs and it was covered under warranty. I got my car back on Tuesday February 3, 2026.

Filed Mar 2, 2026 · Engine · NJ

On Wednesday February 4, 2026 my car began to shake and shudder and almost stall out and the check engine light came on again. I had just gotten my car back from Burlington Hyundai the day before for the same problem. I drove it straight to the dealership for service. This time, they said it was a problem with the EGR system. They replaced some things and I got my car back on Friday February 13, 2026.

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.