Truck dies right after auto start? 2020 tundra

I have auto start in my 2020 plat tundra and like 4 months ago it started doing this thing where I auto start it, and then it fires up and 2 seconds later shuts off. And automatically tries to start again, which is does and stays in for 2 seconds and shuts off. Then my clicker does a non typical beep in succession. . . Haven't had much time to diagnose it so I just haven't been using the auto start. Not sure where to go from here. Hope someone has some insight! Thanks

 

Same time happening as the horn is blasting?

Are you on your factory battery still?

 

Are you still under warranty? I would take it to the dealer.

 

Your clicker beeps? Do you have an aftermarket alarm?

 

Did you install new radio with idatalink maeatro?
Anything plugged into the obd2 port right now?

 

Didn’t even know 2020’s had auto start. Is it only on platinums? My limited doesn’t have it.

 

I think they mean remote start...