NHTSA Complaint #11583854 — 2013 HYUNDAI SONATA

Hello, My rear brake lights burn out frequently and the bulbs get so hot it deforms the plastic bulb holders and the light bulb falls out resulting in no brake lights. This has been happening for over 10 years. Hyundai has acknowledged the problem and sent a notice to repair it for free if the car is less than 15 years old or less than 200,000 mile. My Sonata has 210,000 miles and they will not repair the defect. I've replaced hundreds of bulbs and multiple bulb holders/wiring harnesses. My daughter has been pulled over multiple times and yelled at from other drivers because her brake lights do not work. The reason why these bulbs get so hot is because it receives to much voltage. Hyundai acknowledges this fact. My brake lights receive 13.4 volts instead of around 12. To much voltage gets them hot and burns them out quicker. It's a safety issue Hyundai acknowledges but wont repair. I guess I have no alternative but to keep replacing the bulbs.... This car is not ready for the scrap yard yet as it get a new engine from Hyundai because the original seized up from another Hyundai defect Do you have any recourse or advise on how to get Hyundai to repair it like they would if the car had 199,999 miles on it? Hyundai refused to budge on the matter. Any advice?