NHTSA Complaint #11692181 — 2018 HONDA ODYSSEY

t approximately 105 000 miles, while driving my 2018 Honda Odyssey, multiple advanced driver assistance systems (ADAS) malfunctioned simultaneously. The following warning lights and messages appeared on the dashboard: LKAS (Lane Keeping Assist System) ACC (Adaptive Cruise Control) Auto High-Beam Headlights Collision Mitigation Braking System, Road Departure Mitigation This occurred without any prior symptoms, and the systems have remained nonfunctional since the initial incident. I did not observe any physical damage, sensor obstruction, or weather-related cause at the time. The car was in regular use and had not recently undergone service or modification. Safety Concern: These systems are critical to safe vehicle operation — especially at highway speeds — and are part of the vehicle’s integrated safety design. Their sudden failure without clear cause presents a serious safety concern for the driver, passengers, and others on the road. Troubleshooting / Diagnosis So Far: Battery is original and may be aging, but the issue persisted after a jumpstart. No recent accidents or damage. Online research shows that many other 2018–2020 Odyssey owners have reported similar simultaneous system failures, which may indicate a pattern or a design flaw. Request for Action: I respectfully request the following: That Honda investigate this incident and advise if it is part of a known issue or Technical Service Bulletin (TSB). If applicable, provide warranty or goodwill coverage for diagnosis and repair. Consider this complaint as part of broader data regarding a potential system-wide electrical/software defect.