gas gauge reading is off...

ive got 22 tundra limited, gas gauge is off , tells me its full and got 400+ miles left, but was reading almost 3/4 tank and 350 miles left yesterday , is there a trick to fixing this, thanks

 

You'll find more info in the proper section of the forum. (You posted in the 2014-2021 section) There are known fuel gauge issues on the 3rd gen trucks (2022+) but I don't remember if there are definite solutions. If you check out the 3rd gen section here you might find the info you seek. ----> https://www.tundras.com/forums/3rd-gen-tundras-2022.128/

 

I second what @GODZILLA said

Did you disconnect your battery since yesterday?