Lexus 2012 RX450h Owner's Manual page 836

4-3. Do-it-yourself maintenance
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Headlight low beams (vehicles with halogen headlights)
STEP 1
STEP 2
STEP 3
STEP 4
836
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.
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
headlight low beams on once and
visually confirm that no light is leak-
ing through the mounting.