2023 Hyundai Kona problems

“I was in a rotary and there were two lanes and they both exited to a bridge. I was on the outside lane of the rotary and when exiting the rotary the car from the inside cut me off and I was unable to alert the driver because me HORN wasn't working. I blew out 2 tires hitting a curb and needed to be towed.State police arrived on the other side of the bridge. My HORN has been replaced by the dealer 3 times now.”

“Dear Hyundai Motor America Consumer Affairs, My name is [XXX], and I am submitting this correspondence as a formal safety and customer-service complaint concerning my 2023 Hyundai Kona SEL, the recurring failure of its horn, and the treatment I received at Capitol Hyundai in San Jose, California. I am requesting that Hyundai Motor America immediately open a corporate case, investigate the dealership’s handling of this matter, preserve all relevant records, and provide me with a written resolution. This complaint involves an unresolved vehicle safety concern. My vehicle’s horn has failed repeatedly. I previously presented the vehicle to Hyundai for this same horn issue in 2024. One of those visits was properly documented. I subsequently returned regarding the horn again, and the horn was made operational; however, to the best of my knowledge, that subsequent visit and/or work was not properly documented in my service history. The horn has now failed again. A functioning horn is an important vehicle safety device. Without it, I cannot reliably warn another driver, cyclist, pedestrian, or other road user when immediate warning may be necessary to avoid a…”

“The contact owns a 2023 Hyundai Kona. The contact stated that while stopped at a traffic light, the accelerator pedal was depressed, and the vehicle hesitated before driving forward. The Engine START/STOP feature was engaged. The contact stated that the ESC warning light was illuminated temporarily. The contact stated that the failure was intermittent, but was a recurring failure. The check engine warning illuminated and remained illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the electric oil pump needed to be replaced. The vehicle was repaired. The contact had not informed the manufacturer about the failure. The contact researched online and associated the failure with NHTSA Campaign Number: 23V526000 (Power Train); however, the VIN was not included in the recall. The failure mileage was approximately 94,000.”

“The contact owns a 2023 Hyundai Kona. The contact stated that while driving 64 MPH, the vehicle experienced a loss of motive power with reduced acceleration. The check engine warning light illuminated. The vehicle was taken to a dealer, where it was diagnosed that the valve and boost solenoid needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was 56,144.”

“After a routine service visit, the vehicle’s braking and speed‑control systems began to behave abnormally. The ABS/ESC control module was replaced or reprogrammed without documentation, and immediately afterward the vehicle’s braking feel, speed‑control behavior, and forward‑collision warning timing changed noticeably. These changes created a safety risk because the vehicle no longer responded in a predictable way compared to its original performance. The affected components are available for inspection upon request. The issue was reproduced multiple times under normal driving conditions. Braking response became inconsistent, and the speed‑control system no longer behaved as it did before the service. The timing and behavior of forward‑collision alerts also changed compared to pre‑service operation. These changes created unpredictability in traffic, especially during following‑distance adjustments, stop‑and‑go situations, and sudden‑braking scenarios. The dealership did not provide technical documentation or explanation for the module replacement or configuration changes and did not acknowledge the change in system behavior. The manufacturer’s customer service…”

“My Kona N Line is not functioning well. Especially after driving for a longer period of time. About 60% of the time, upon letting go of my brake, the car jerks. Going from 0 - 5 mph is the worst. The car definitely hesitates many times. Again, it is when I have driven it for over 10 minutes. I took the car to a service department in El Monte, CA on 11/1. They cannot find the problem. They rode with me and it did not show at that time. They released the car to me. The Kona N has a recall but not my car, the Kona N Line. The recall is for the same problem. I am extremely frustrated. I have another appointment on Tuesday of this week to take to the Glendora service department. I don't know what to do. I am not one to complain but this is not safe. This is my fifth Hyundai. Nothing but good cars until now. Please advise. [XXX] [XXX] .”