How do I charge dead battery? Under hood? in trunk? or other?

It depends what kind of vehicle. Most charge under the hood on the battery terminals or other marked locations.

Hello Dan, We're here to help. Would you mind giving us a call, our Service team would be happy to walk you through charging your battery. 541-476-6858

Google guides review places they've been. For the information you want, you would need to call Toyota and I am sure they would be glad to help you.