There are customizable volume settings on the multi-information display in 2019 Prius vehicles for numerous buzzer warnings. I'd like to maximize my sound levels beyond the top selections. Since the low rolling resistance tires are so noisy, it would be helpful if someone here knew where, or how, to pump up the volume. The dealer's shop was clueless.
There are some volume settings in the Settings section of the vehicle but it depends on what you’re trying to change.
Those, and other, settings are described on pages 780 to 789 of the 2019 Prius Owner's Manual. https://www.toyota.com/t3Portal/document/om-s/OM47C35U/pdf/OM47C35U.pdf However, there are no doubt other settings only accessible by people with Toyota's technical manuals.
