Traction Control Off display.

I'm a full time rv'er and of course I left my Toyota manual in storage up North so I can't look anything up in that.
Before I go online to look does anyone know why the TRACTION CONTROL OFF would kick up on the display? I've pushed the traction control button on the lower right hand side of the steering wheel but it won't shut off. Everything seems to be ok.
I'm making an appointment at the Toyota dealer for next week to look at a CHECK Engine light too. I discovered my oil was a quart low and that has never happened before. It was a bad day for the Tundra!

 

Need to find out what the CEL is for. I’d guess that would answer your question. You can go by just about any auto parts store and they can read the code for you. The Toyota dealer might charge a diagnostic fee.

 

Good grief! I'll start checking fuses first after that it's dealership time.
Thanks for the chart Tim.

 

X2 auto parts store free scan to get the code. Research and correct, maybe something simple like a gas cap seal.

 

I see you got the DC which is 6.5 bed. Are you using a slider hitch to make the turns? Just curious how it's working. I had pulled a fifth wheel with 6.5 bed diesel Ram for years before slider hitches and crashed the cab when delivering to guy who purchased, whoops.