1RUN

I am new to lexus, and got my 2024 Rx350 AWD this March. Today I remote started the vehicle from inside my work place, like I normally do on a hot day. When I approached the vehicle it already finished running for 10 minutes. When I entered the car, a continuous beeping noise was coming from the console. I didn't know what to do. Nothing on the display. I was trying to call the dealer. In the meantime the beeping stopped after 3 or 4 minutes of me entering the car.
Anyone knows why this could happen?