Does a snowplow void the warranty?

Exactly! Blowing through 6" of snow @ 15mph into a parking berm will certainly tweak things. And then the leasing company will want to be made whole for the damage.

 

^^ this... regardless of vehicle, plows are very hard on the frame and suspension.

 

I know Im late to this discussion but Ive been plowing with Tacomas for years. Even thru their warranty period. Never had any issues. Know its limitations, beef up your front suspension with Timbrens at minimum. I got a new frame on my 09’ even though the plow frame put four 3/4” holes into the trucks frame. Obviously if I smash something to hell while plowing, that wouldn’t be a warranty item. But to say the truck wont handle it and get destroyed is ridiculous. Its a truck.