Toyota PRIUS Manual page 538

4-3. Do-it-yourself maintenance
STEP 3
STEP 4
538
PRIUS PHV_OM_OM47831E_(EE)
Replace the light bulb, and install
the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb base.
Shake the bulb base gently to
check that it is not loose, turn the
headlights on once and visually
confirm that no light is leaking
through the mounting.