So I bought a 2009 sonata gls and I am having a few problems with it. The main one is my fuel gage will read correct until about halfway then it jumps back up a bit. Along with that the digital range will jump around sometimes. I’ve tried looking how to do a gage self test but no luck.
the other thing is my abs, esc off, tpms, and pressure warning light are always on. No matter how many times I press the esc button on the dash it won’t go away, and my tires are filled up. Thanks in advance!

 

Many times what causes this is, a poor ground connection and the dash gauges are the result of this.
I would suggest starting with the battery negative cable connections to any sheet metal ,remove , clean with sandpaper and reinstall.
Because this is fairly common, I would ask the service dept what it might cost to correct this since surely they have seen this problem before.