We took this car in to the dealer to implement the "BMS Battery Logic Improve (26-01-065H)" update on 9/17/26. We have had two issues that appear to be software related and might be caused by improper voltage from the 12 volt battery. The issues are: - Warning messages appeared "Check forward safety system" and "Smart cruise control conditions not met”. The Smart cruise control stopped working. This is still happening. Started on October 10. - The Charging Port door release required 3 or more clicks of the "unlock" function to open. We resolved this by changing the unlock setting in the settings software, making us think this is a software issue from the update. Started on September 18. Safety is decreased by not having Smart Cruise and Forward Safety Systems available. We will go to the dealer today. We have reported this to Hyundai, case #43378707. No one else has inspected the car. The warning lights appeared on October 10th.
No injuries · No fire · No crash
The vehicle is a 2022 Hyundai Kona N Line, VIN [XXX]. The driver-assistance/safety systems have intermittently malfunctioned. The reported problems include false forward-collision warnings, unintended automatic emergency braking when there is no apparent obstacle or collision threat, false blind-spot/side warnings, and unwanted steering intervention from the lane-assist system. The exact failed component is UNKNOWN. Possible involved systems include the Forward Collision-Avoidance Assist system, Lane Keeping/Lane Following Assist, Blind-Spot Collision Warning/Collision-Avoidance Assist, related cameras/radar sensors, control modules, wiring, or software. The vehicle remains available for inspection upon request. These malfunctions create a serious crash risk because the vehicle may unexpectedly brake or steer while traveling at highway speed. Three different drivers in my household have independently experienced abnormal behavior from these systems. My greatest concern is that sudden braking or steering intervention could cause the vehicle to be struck from behind, leave its lane, enter another lane, or collide with another vehicle or fixed object. The vehicle was taken to AutoFair Hyundai for inspection and diagnosis. The dealership stated that it could not reproduce the condition during its evaluation and did not find a stored diagnostic trouble code. The dealership therefore did not identify a specific cause or perform a repair directed at the reported forward-collision, blind-spot, braking, or steering malfunction. A rocker cover assembly was replaced under warranty for a separate issue. The dealership has stated that it is checking whether the affected driver-assistance systems can be permanently disabled. Hyundai Motor America has also been notified through a national customer-care case. Hyundai is aware that the complaint remains unresolved. There are not always warning lamps or stored fault codes associated with the events. The symptoms are INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION
No injuries · No fire · No crash
I purchased this 2022 Hyundai Kona used in May 2025 with approximately 55,000 miles. Within about one to two months of purchase, in June 2025, the transmission began to malfunction. When I pressed the accelerator, the speedometer and engine speed would climb but the vehicle would not accelerate, resulting in a sudden loss of acceleration while driving. This happened in traffic on a public road, which put me at serious risk of being rear-ended and left me unable to safely merge, cross intersections, or maintain speed. The vehicle was taken to a Hyundai dealership service center, which diagnosed a transmission failure and performed a transmission repair in August 2025. In October 2026, about 14 months after that repair and about 17 months after I purchased the vehicle, the exact same symptom returned. When accelerating, the speedometer surges while the vehicle fails to accelerate and loses drive. This has again occurred on public roads. The vehicle now has approximately 78,000 miles. This is a serious safety concern, not only for me but for everyone driving around me. The loss of acceleration is sudden and unpredictable, and it occurs while the vehicle is in motion, including in traffic. It puts the driver and surrounding vehicles at risk of a collision. I have stopped driving the vehicle until it is repaired. Warning signs: No warning lights or messages appeared before the failure. The first symptom was the speedometer surging with no corresponding acceleration. Confirmation and inspection: The first failure was diagnosed and repaired by a Hyundai dealership service center in August 2025. The current failure will be taken to the same service center for diagnosis. The vehicle and transmission are available for inspection. I am reporting this because the same symptom has led to transmission failure twice in only about 17 months of ownership.
No injuries · No fire · No crash
Today, my Kona tried to kill me. I was traveling on a freeway in a construction zone. Road conditions were clear: no fog, precipitation, potholes or obstructions. Traffic slowed down to 30 mph as the rightmost lane becomes an exit only lane (and people exchanged between the middle and right lane). Traffic continued to flow freely around 50 mph in the left lane. I was in the middle lane, and after passing the off ramp my lane was clear for at least an eighth of a mile ahead (all visible traffic in front of me had taken the exit). I began to accelerate back up to freeway speeds when the "Automatic Emergency Braking" engaged for no reason. There was a curved driving path on the display (which read "Automatic Emergency Braking"), and it seemed like the car was trying to force me into the left lane (underneath a semi truck). I could feel the same motored pull that the Kona has while using the "lane keeping assistance" feature. But unlike the lane assist which takes 20 pounds to manually override, this took approximately 80 pounds of force to fight. Even fighting the turn, I was multiple feet into the left lane. The only reason I was not crushed by the wheels of the semi trailer is because the driver was hugging the left side of their lane. I was nearly rear-ended and the 4 cars behind me nearly had a pile-up because of this as well. My best guess is that it detected the cement barrier along the side of the curved road and incorrectly determined that I was on a collision path with it. Since it was a construction zone, the cement barrier was approximately 3 feet outside of the lane. In reality, this feature is not production ready and needs to be fixed/removed from the fleet.
No injuries · No fire · No crash
My radiator has coolant leak. I noticed the fluid getting low and the smell. I had to put fluid in 2-3 times the last month. I took it into the shop and they confirmed that it is the lower left part of the radiator that it’s leaking from and it has to get replaced. I did notice on a campaign 24\-EM\-005H\. for the Hyundai Kona 2022. But my VIN number wasn’t part of that. It is having the same leak and I have to get the radiator replaced. My car has 65000 miles on it so it wasn’t covered under warranty. It is in the auto shop now and will cost me over 1200 to get it fixed.
No injuries · No fire · No crash