I just got a 2003 GX470 with no owner's manual.
How do I set the Home button on the Nav system?

You can request a copy of the manual through the owners section of the Lexus website. You'll need to register your vehicle first.

Here is what the manual says:

Push the "MENU" button to display the "Menu" screen and toch the "Marked Points" switch

Touch the "Reg. home " switch of Marked points screen for registering your home.

If your home is registered the "Delete home" switch will be shown.

You may register the locationof your home by some different methods: current position, address, map location, etc.
Touch the screento select your desired mehtod from the menu.

Hope that helps

Thanks, CaptnPete---I'll give it a shot.

As someone pointed out, you can get owners manuals and navigation instruction manuals from Lexus.

Go to this site and register as an owner. I think you will need your VIN.

https://auth.owners.lexus.com/lexusowners/a...ssl/OwnersLogin

Go to the contact page, make the request and they'll send you replacement manuals.