How do you replace cabin air filter in Toyota sr5 tundra 2002?

It's easy: on the 2007, 2008, 2009 tundra and the 2003 4 Runner are all in the same place. I suspect it's the same on the 2002 Tundra

It is behind the lower glove box. Just open glove box disconnect the little piston rod on the right side then squeeze in the side supports so the glove box will open way down. The cabin filter it right behind the glove box. You will see a snap on door that covers the filter. Pull it off and slide out the filter.