Power Steering Fluid problems of the 2013 Toyota Tundra

I was pulling into a parking spot when my power steering went out. I checked the fluid and the fluid level was low. I called Toyota customer care and they sent a tow truck to pick up my vehicle and deliver it to the nearest dealership. While loading the truck, a seal popped on the steering arm and fluid started leaking out. Springhill Toyota is not honoring my manufacture or extended warranty because I have added heavy duty coil springs to support my road armor bumper I installed for extra protection. After researching, this seems to be a common problem in the 08-13 Tundra's with or without modifications. Toyota even issued a technical notice "t-tt-0183-12" to address this issue but the dealership is denying this claim. This could cause a major accident if this happened at highway speeds or making turns. There needs to be a recall issued or a notice to notify all of the dealerships of this problem.