2011 Toyota Prius Owners Manual - Page 401

3-4. Using the interior lights n To prevent 12 volt battery discharge If the interior lights and personal lights on when the door is not fully closed or the interior light switch in door position, the lights will go off automatically after 20 minutes. n Customization that can be configured at Toyota dealer Setting (e.g. The time elapsed before lights turn off) can be changed. (Customizable features →P. 596) 3 Interior features 377 PRIUS_U (OM47685U) DVD