Doesn't start after remote starting and entering truck

I've had this occur twice so far and I'm perplexed. Since we're now into winter, I've been using the remote starter on my 2020 TRD Pro. When I open the door of the truck, normally the truck will turn off and then I'll start it with the push button. However, on these 2 occasions, I open the door and the truck stayed on. The 1st time, I thought cool (since it's stupid that I have to restart the truck), and I tried to shift into gear and it turned off. Then it wouldn't start when I tried (for about 1/2 hour). The next time I remote started, I opened the truck door, it remained on and so I manually turned off the truck (thinking I was gonna outsmart the truck). I then tried to start the truck normally, and nothing. It would not start, but would turn on accessories. Anyone have this experience? Or is this another Gremlin? Thanks.

 

Being a 2020 is is time for your battery to take a dump. Tundra's do all sorts of funky things when a battery starts going out or has lower volts. I would check the battery and do a load test on it.

 

Thanks. Sounds like Step 1. Will let you know what I find out.