Toyota 2008 Prius Quick Reference Manual page 5

Key fob
Master key
Mechanical key
Lock/Unlock the driver's door only
*
Master key Ignition key & wireless remote.
Mechanical key Fits into master key and can be
removed to manually lock/unlock driver door only.
Ignition key slot When inserting, push completely
in. When removing, gently pull; key will be pushed
out by a spring. DO NOT FORCE THE KEY. If it
cannot be removed, push it all the way in again,
then pull it out.
To remove or replace mechanical key Slide the
lock knob in the direction of the arrow.
*
Slide
3
Ignition key
(key fob) slot
Pull out