EddieP1215

Got in my car the other day and my woofer in the back is blown it seems. No bass and rattly sound when bass hits. Make it so bad I don't even listen to music loud like that anymore.

Has anyone had to change theirs? If so, is there a step-by-step/how-to?

Also, is there a way to test the amplifier? Also, where is he location of the woofer? I think it's behind the trunk lining on the right side?

I think I'd like to possibly test it before investing in a woofer I may not need.

ThaDRD

For a step-by-step, I'd use the official online shop manuals. It's $20 for 2-day access. https://techinfo.toyota.com/

The subwoofer itself is mounted on the rear deck.

A blown subwoofer is pretty obvious. You shouldn't need to test the amp.