I don´t drive far anymore. My 2013 4wd Tacoma developed a dead battery with
only 4700 miles on it. I mean as of now. Seven years of neglect does that to
a battery.
I have to get a yearly smog test, so I had to get a new battery. I hemmed,
hawed and finally bit the bullet, changed the battery and drove to the smog
station. The truck failed spectacularly!
Once the battery is disconnected, the emission computer brain switches off
and its data goes bye-bye. A new data set has to be established by driving
the damned truck for way, way longer than to a smog station. I´m working on
it. I have till April second.
The Lesson: Don´t wait to change a modern vehicle battery until you need to
get a smog certificate. I didn´t know that. I do now.

The last resort:
<https://www.smogtips.com/smog-questi...Toyota-Tacoma-
Drive-Cycle>
Let´s hope it doesn´t come to that.

leo