4lo flashing Tundra won’t start

I have a 2013 tundra, the battery was very low so I charged it. After charging I tried to start it and it will crank but it will not fire. The 4 lo is flashing.

 

I would still suspect the battery, our trucks do funky things with bad batteries. I would start by load testing the battery to get an accurate reading, then move on from there. Good luck.

 

Need a new battery. Sounds like that battery can't take a full charge.

 

Welcome from NY, by the way. Good luck.

 

After double checking I have found the 4lo light flashing and the traction control light on. The engine turns over but doesn’t start. I found a light sensor chart that claims it could be the AIP valves
https://www.tundras.com/attachments/tundra-error-indicator-dash-lights-docx.394554/

 

If AIP you can find the bypass. In the meantime take the battery terminals off for a few minutes and restart.

 

But did you check the battery?