Mazda Repair Questions? Ask Mechanics for Answers ASAP
I would usggest you take a look at the owners manual which is available on the Mazda website for information on your vehicle.
This can be found here: https://owners-manual.mazda.com/gen/en/cx-5/cx-5_8gj1ee18b/contents/05020115.html
I'm afraid it doesn't help. The vehicle speed alarm is referenced but there seems to be no setting you can go to in the centre display that references it so it can be turned off
It is in the owners manual! Follow the index and it will give you all of the information you need.
This is the direct link for activation / deactivation of system: https://owners-manual.mazda.com/gen/en/cx-5/cx-5_8gj1ee18b/contents/05281507.html