TOYOTA TUNDRA FRAME RECALL - FRAME COATING APPLIED PER RECALL IN 2014. VEHICLE INSPECTED TWICE BY DEALER IN 2018 & 2019 AND VEHICLE DETERMINED TO BE OK. RECENTLY EXPERIENCED LOSS OF BRAKES AND CRASH INTO GARAGE. VEHICLE INSPECTED BY INDEPENDENT MECHANIC AND FOUND 2 PERFORATED AND RUSTED BRAKE LINES. SCRAPING AWAY THE UNDERCOATING UNCOVERED OTHER CORROSION IN VARIOUS DEGREES. DETERMINED THAT SPRAY UNDERCOATING CAME WAY TO LATE AS TRUCK ALREADY HAD 9 YEARS OF CORROSION. UNDERCOATING ONLY HID THE PROBLEM. SUBMITTED A CLAIM WITH TOYOTA WHO OFFERED NO ASSISTANCE.