HONDA P-81ACRD - Manual (Page 69)

You can check the state of your Ingenix G PS connection at
any time by selecting this menu.
If you check “Yes” on the “Touch tone” item, Ingenix emits a sound when LCD
screen is touched. And If you choose “No”, such sound will turn off.
If you deviate from the planned route,
Ingenix will automatically recalculate a route to
the destination. To indicate re- routing is in
Progress Ingenix will emit a sound.
You can choose following options.
“Yes”: The re- route sound will be emitted during recalculation.
“No”: No sound will be emitted.