The contact owns a 2023 Kia Sportage. The contact stated that while driving at 15 MPH, attempting to merge onto the roadway, and depressing the brake pedal, the vehicle failed to decelerate. As a result, the vehicle crashed into semi-truck on the driver's side. The air bags did not deploy. No warning lights were illuminated. A police report was filed, and injuries were reported. The driver was transported to an area hospital and treated for whiplash and back pain. The vehicle was taken to an independent mechanic, who did not diagnose the failure. After investigating the failure, the contact related it to NHTSA Campaign Number 23V410000 (Service Brakes, Hydraulic), but the VIN was not included. The manufacturer was notified of the failure. The failure mileage was 11,000.