NHTSA Complaint #11629708 — 2020 HYUNDAI NEXO

PLEASE SEE ATTACH FOR DETAILS 1. Component or System Involved The Fuel Cell System and Accelerator Pedal Control System are suspected to have malfunctioned. The issue is characterized by the vehicle's failure to respond to input from the accelerator pedal, particularly at speeds between 45-65 mph, which may be linked to increased power demand from the fuel cell system. The system is available for inspection upon request, as the issue is ongoing. 2. Safety Risks The malfunction poses a serious safety risk to the driver, passengers, and other road users. Sudden and unexpected loss of acceleration while driving, overtaking, or climbing inclines creates a high risk of collisions, especially on highways where traffic moves at high speeds. Other drivers may not have sufficient time to react, leading to rear-end collisions or side-impact crashes. 3. Problem Reproduction and Confirmation The problem occurs consistently after driving for a short period (less than five minutes) and has not been resolved. The issue has not been confirmed by a dealer or independent service center because Hyundai service centers in the Los Angeles area are unable to schedule an appointment until April 2025 due to a shortage of technicians. 4. Inspection by Manufacturer, Police, Insurance, or Others The vehicle has not been inspected by the manufacturer, police, or insurance representatives. Attempts to seek inspection by Hyundai have been unsuccessful due to a lack of available appointments. 5. Warning Lamps, Messages, or Symptoms There were no warning indicators prior to the malfunction. Once the issue occurs, the following appear: "CHECK FCEV SYSTEM" message on the LCD display "FCEV Service Warning" light on the dashboard These messages activate during the loss of acceleration and persist until the vehicle is turned off. Following the manufacturer's recommended procedure (turning the car off and restarting it) does not resolve the issue.