'91 Honda Prelude - Random Beeping

My Honda Prelude just started beeping randomly. Sometimes it’s 6 beeps, sometimes 8. Seatbelt light does not come on. No dash lights. Car’s running fine. Seems to happen in the afternoon (hot) more than in the morning. Any suggestions? Thanks!

is this the regular door open, or keys in the car beep/ ding? or a tiny electronic beep?

if it’s the tiny electronic beep i would bet your radio anti theft, face plate alarm is going wacky.

original radio or aftermarket?

tiny electronic beep. aftermarket radio. I’ll check it out. Thanks!

if you still have the manual look up for anti theft warning, and how to disable it.