Where is the beeper speaker located on the dashboard?

I’d love to know too, you’re not the only person out there that has used a Prius as a truck

Not going to say any more to avoid attracting attention from the local constabulary, but I will say a flag correctly positioned will at least keep you out of trouble for most parts of the US.

 

Are you asking because the hatch won't be fully closed, so the beeper will be beeping about that?

Why not just push the hatch latch closed? In my gen 3, the latch is where the switch for detecting hatch-open is located. With the latch pushed closed, you shouldn't have the dome light on or the beeper beeping.

Just remember to push the unlatch button later before going to close the hatch, or it'll make a fearsome bonk when it hits the closed latch.

 

Some of us may at times carry things with a door slightly open (bungee cord secured of course) or in other ways that wouldn't "pass muster" lol. Would love to find a way to bypass the beeper.

Same thing happened the other day just carrying wheels & tires from my track car in the back seat, the beeper said to buckle seat belts, but the seat belts weren't large enough to get around the large sized wheels & fully buckle in.

 

As per Chapman, it's better to figure out how convince the sensor that the latch is closed rather than disabling a beeper that can warn you about multiple things, some of which would cause way more problems if you don't hear the beeping.

 

Some of the beeps on my Prius are downright incorrect (heavy item in back seat does not = someone back there not buckled up), and others (such as the dreaded "Low Oil Pressure") should be way louder than the typical beeps which are already annoying enough.

This car, although great, makes it difficult to transition to: (a) a vehicle without back-up sensors/beeping and (b) a vehicle without any sort of rear park assist, which was true for most vehicles pre-2015 without a technology package.

Whenever I drive someone else's truck, I'm either (a) astonished it only beeps when I get too close to something or (b) go "where are the dang beeps when backing up". Good thing it's not my friend's Ford, which beeps and dings for almost everything, down to the point where you train yourself to ignore them