I took my 2019 Toyota 4 Runner Limited Edition for maintenance/repair and it was identified the entire under carriage and frame is rusting out creating safety issues. This vehicle has never has never been flooded or exposed to northern salted roads. The garage repair shop was afraid to repair the vehicle as they identified this is a huge safety issue. They could not understand that a 5 year old car with under 65K miles on it would have extensive rust damage and deemed it unsafe. They referred me to take it to the TOYOTA dealership and to call TOYOTA Brand Engagement Center headquarters to report the issue. That phone number is 1-800-331-4331. Apparently this is a known issue for TOYOTA 4Runners and other models under their brand as I found many complaints from owners on the web. I reached out to TOYOTA and they denied any awareness of an issue and responsibility. The case number is #[XXX]. They also told me I need to pay out of pocket to fix whatever the recommendation of the dealership provided to repair and fix. I was appalled at the quick and dismissiveness attitude without any additional further investigation and assistance to help out knowing this is not a normal case of rust for a car. I believe there is a defect and safety manufacturing issue on the vehicle even if is not a current recall and why I am reporting such a huge safety issue. So I took it to the TOYOTA dealership where they also agreed this is NOT normal wear and tear for a car of ‘length of time’ and mileage on it and is a safety issue. They also spoke to the case manager at TOYOTA Brand Engagement Center and also denied them any assistance for repairing of the vehicle. The VIN# is [XXX] . I can provide photos of the damage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)