Have had an Icon stage 2 lift for ~2 years with ~15k miles on them, with a few moderately difficult off road trips. Recently developed a clunk front drivers side. Diagnosed as the KDSS hydraulic cylinder. Vehicle is currently at Glendale Toyota in Los Angeles area. Dealer won't cover under warranty.
The service manager defers to the "field tech specialist", who just consults over the phone and decides to deny warranty.
I then created a case with Toyota Customer Experience, and they have also allowed that decision to stand.

My 4runner is currently in their shop with a dismantled KDSS system, and the hydraulic cylinder unit (only comes as a unit with lines) costs $2046!! And they want to charge $2000 on top of that for diagnosis and then installation. I could almost get an Icon stage 7 for that amount!!

I am almost furious enough to get a lawyer involved, but not sure that will be worth my time and additional costs.

From reading through a couple other warranty threads, it would seem the burden of proof would be on Toyota to make the case that my Icon lift CAUSED the KDSS failure, and they have not done that, nor do I believe they would be able to do so.

Any suggestions would be welcome.