Illuminated Entry Function
WARNING: This page is about a different car, the 2008 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
When the body ECU detects that the doors are unlocked after the unlock operation has been made, it will light up the key slot, overhead J/B and interior light for approx. 15 sec. If all the doors are locked during this time, the lighting will be cancelled and the lights will immediately fade out.