NHTSA Complaint #11455404 — 2021 HYUNDAI PALISADE

This is health concern and I have felt that my bronchial tubes are getting hot and eyes/throat/nose pain after 15 minute driving, then the pain keeps going on for while even after driving. I suspect toxic degassing from seats or interior materials in vehicle, or comes from engine room. This degassing might have been gradually decreased since purchasing this Palisade in April, 2021, however, I am still suffering from respiratory pain when I drive this vehicle. Hyundai Service Center inspected this Palisade and they told me toxic gas comes from headrests, and offered me to replace headrests. They said a thousands of people complained about this issue already. However, I don't think the toxic gas is from only headrest, but also from the others. They cleaned the headrests, but nothing changed. I conducted inspections personally as follows. 1. Tested indoor air quality in the vehicle by using a sensor from Winix 5500-2 Air Purifier without running engine and with closed all doors/windows/vent. 2. Tested indoor air quality in the vehicle for 10 minutes by using Gray Wolf AdvancedSense Pro with multiple DirectSense probes and with closed all doors/windows/vent and running a fan (indoor air circulation) The result from a sensor of Winix 5500-2 Air Purifier showed "Bad air quality" at the test number 1 regardless headrests (without headrests). The result from Gray Wolf AdvancedSense Pro showed HCN 120.0 micron g/m3, TVOC 1200 ppb, and SO2 0.2 ppm. I believe those values would be increased if measurement time increase. There is no warning lamps, messages or other symptoms of the problem prior to the issue when they first appear. Every day, I drive this Palisade and I feel pain and hot on my respiratory, even it keeps going on by next day morning. My primary doctor recommended me to report this case to EPA or NHTSA.