2004 Toyota Sienna Owners Manual - Page 547

Sienna_Navi_U (L/O 0301) Registering your home INFORMATION D If the system cannot determine the current vehicle position correctly (in cases of poor GPS signal reception), the voice guidance may be made early or delayed. D If you did not hear the voice guidance command, touch the "MAP/ VOICE" tab on the screen to hear it again. 41 2004 SIENNA Navigation from Jan. '03 Prod. (OM45409U)