Toyota Sienna 2006 Operating Manual page 279

Deleting the speed tone individually.
You can delete "1" to "6" of the speed
tone.
If you delete them all at once, all of 6 numbers
are deleted.
1. Touch "Delete" of "Speed Tone".
2. Touch the touch-screen button you
want to delete.
3. Touch "YES".
OTHER FUNCTIONS
Deleting all the speed tone
1. Touch "Delete All" of "Speed Tone".
2. Touch "YES".
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