I experienced such a beep after letting my sister-in-law raise and lower the top. While lowering the top, she let go of the button a few times causing a brief pause. With the top closed and while driving, I heard the beep several times with no warning light. The next day the trunk would not open. I raised, then lowered the top. The trunk now opens normally, and no more beeping. Even though I thought the top was fully stowed, I suspect the car felt it wasn't fully secured. This is the only time this happened.