You will need to call mexitel to schedule the appointment first. You will also need the Mexican birth certificate, and an official photo identification (such as the passport that will expire for example, another identification such as the Mexican or US driver's license also works). It would also be useful to bring documentation of your address in Mexico or the U.S. (It can be an account of a service - electricity, water, cable, telephone, or bank account statement). You must have your name or the name of both parents if you do not pay electricity for example.
Dear Andrew, the requirements for the renewal of a passport are in the following link: https://consulmex.sre.gob.mx/seattle/index.php/es/tramites/pasaporte-mexicano Greetings.
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