What's it mean when there is a weak start up noise?

So hopefully this post makes sense. I've had my Bronco since Apr of 2024. Most of the time, I push the button and depress the gas, those couple beeps as soon as everything is starting up comes on fine. However, sometimes when I turn it on, the beeps are weak, they are a slightly higher pitch than normal. That never sounds right to me, so I always turn it off and then on and then its normal again.

What causes that weak, higher pitched start up beeps? Would it be ok to go and drove after hearing that weaker noise?