2025 Kia K4: lane keeping assist jerks the wheel

Filed Nov 3, 2026 · Driver assistance · 9,000 miles · NJ · crash

The contact owns a 2025 Kia K4. The contact stated that while driving at various highway speeds, the lane keep steering assist erroneously engaged causing the vehicle to steer out of the intended lane. The contact stated that the failure was recurrent, causing the vehicle to unintendedly steer to the left and to crash into a concrete median wall on one occasion. The failure mileage was 9,000.

Filed Jul 29, 2026 · Driver assistance, Steering · NY · crash · 2 injuries

I am submitting this complaint regarding a suspected safety defect involving a 2025 Kia K4. On XXX, the vehicle was involved in a single-vehicle crash in the Town of [XXX]. According to the driver, the vehicle unexpectedly steered off the roadway when the Lane Keeping Assist/Lane Centering steering system appeared to intervene. The driver attempted to maintain control but was unable to keep the vehicle on the roadway. The vehicle entered a ditch and struck a utility pole, causing significant damage to the passenger side. The front and rear passenger-side airbags deployed. The front passenger window shattered, sending broken glass onto the front and rear passengers. My daughter was seated in the front passenger seat, and my [XXX] granddaughter was properly restrained in a rear child safety seat. Both sustained injuries and required medical evaluation following the crash. After the collision, I began researching similar incidents and found other owners reporting concerns involving the steering assistance and lane-keeping systems. While I cannot determine the exact cause of this crash, I believe the possibility of an unintended Lane Keeping Assist or steering system intervention should be investigated because it may present a safety risk to other motorists. I respectfully request that the federal safety agency review this incident, along with any similar complaints involving the 2025 Kia K4, to determine whether a defect exists in the vehicle's steering assistance, Lane Keeping Assist, Lane Following Assist, or other Advanced Driver Assistance Systems (ADAS). Supporting documentation can be provided if requested. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 16, 2026 · Acceleration, Driver assistance · IL

There are times my vehicle keeps accelerating even though I’m hitting the brakes. Once stopped, it then doesn’t want to accelerate. I’ve reported to the dealership and they try to tell me it’s the type of transmission it has and that it’s normal. Continuing to accelerate while braking is extremely unsafe. My engine is also making a ticking noise that it never used to make. I bought my car brand new in October of 2025. I left the dealership with 9 miles on it, I now have 25k miles on it and I don’t feel safe driving it. The lane assist and emergency braking system is also extremely inaccurate and over corrects when it shouldn’t especially in bad weather. Emergency braking is detecting stuff in front of me that isn’t actually there, same with in reverse it sees things extremely far away and prevents you from moving, although it’s safe to do so.

Filed Dec 25, 2025 · Driver assistance, Electrical · TX

I am reporting ongoing safety issues with my Kia K4 LXS involving driver assistance systems and steering control. While driving in heavy rain with reduced visibility, the vehicle disabled multiple sensors and displayed a “camera obscured” message along with inattentive driving warnings, despite both of my hands being on the steering wheel and my full attention on the road. The loss of driver assistance features during hazardous weather conditions created a distracting and dangerous situation. This issue occurs frequently. I regularly receive false inattentive driving and hands-on-wheel warnings even when I am driving properly. These alerts are distracting and interfere with safe vehicle operation. I am also experiencing lane control and steering interference. The steering wheel will sometimes pull the vehicle in a direction that does not match the road, even when lane assist is turned off. This is especially dangerous in construction zones with temporary lanes marked by reflectors, including when driving next to large trucks. I have experienced multiple near-miss incidents and have had to physically override the steering wheel to remain in my lane. These problems now occur almost every time I drive and have caused me to feel unsafe operating the vehicle. I believe this represents a serious safety defect.

Filed Sep 26, 2025 · Driver assistance, Steering · MI

While driving on the freeway in the left lane on a two-lane highway, the lane departure and steer ahead feature incorrectly adjusted steering and pulled vehicle into the right lane. Is incorrect adjustment due to lane departure has happened numerous times. Each time this occurred I was not using copilot features. The lane departure cannot be turned off.

Filed Mar 3, 2025 · Driver assistance · 1,300 miles · MI · crash · 1 injury

The contact owned a 2025 Kia K4. The contact stated while driving at various speeds, the vehicle was pulling to the left unintendedly. The contact stated that upon disengaging the Lane Keep Assist, the failure recurred while driving. The vehicle was taken to Discount Tire, where the tire pressure was adjusted. The vehicle was taken to the dealer, where an alignment was performed; however, the failure persisted. The contact stated while exiting the expressway and driving approximately 30 MPH, the vehicle veered to the left unintendedly, causing the contact to lose control of the vehicle. The vehicle veered off the road and crashed into a ditch, and the vehicle faced oncoming traffic. Several unknown warning lights were illuminated after the crash. The air bags did not deploy. The contact hit the middle of her forehead against the steering wheel and sustained a bruise. The contact did not seek medical assistance. The contact was able to exit the vehicle. No police report was filed. There was no property damage. The vehicle was towed to a tow lot. The vehicle was then towed to a second dealer autobody repair shop, Glassman Collision Center (22250 Telegraph Rd, Southfield, MI 48033), where the contact was informed that the driver's side of the vehicle and the transmission were damaged. The vehicle was totaled. The dealer and the manufacturer were notified of the failure. The manufacturer informed the contact that a complaint had been sent to the dealer, and that she would be contacted by the dealer. The failure mileage was approximately 1,300.