Ah, California's tax people. They are very aggressive, with the goal of showing you're still a CA resident who only moved temporarily. If you move back to California, expect them to demand back taxes for the time you were still a resident (according to them) but just in Mexico temporarily.
If you have property in California, those ties will be used to show you were planning to return. For example, owning CA real estate, renting a storage locker, or a car kept in storage in CA. If you renew your CA driver's license, or vote in a statewide election - all of these suggest you're still a resident. The CA tax board will weigh it up and go after someone who didn't pay CA taxes for years.
Assuming you moved last year, that would mean 2020 could be your first full year in Mexico. When you file taxes next near (for 2020), in my lay opinion, file CA taxes for $0. Throw down the gauntlet and make CA decide if they want to pursue you in year one - not after you have years of taxes they view as unpaid. If you move back to CA, and not to some other state, they are very likely to demand back taxes for every year you lived "temporarily" (in their view) in Mexico.