2004 Toyota Prius Owners Manual - Page 146

NOTICE z The hybrid system cannot be started when the shift position is in "N". Be sure to put it in "P" and then start the system. z Do not leave the hybrid system in "ACC" or "IG−ON" for a long time. The auxiliary battery will discharge. z The hybrid mode in which the battery is discharged or disconnected is retained in memory, and that mode is turned on when power is applied. When you leave your vehicle, be sure to turn the "POWER" switch off and carry the smart key. If you get out of your vehicle while carrying a key without turning off the "POWER" switch and then close the door, a warning tone sounds inside and beeps sound outside. INFORMATION You can insert a genuine key while in the "IG−ON" mode or with the hybrid system starting. Do not insert any key other than genuine keys. 134