Toyota Yaris Owner's Manual page 235

PS73506
2. Release the bulb retaining spring
and remove the bulb. Install a new
bulb and the bulb retaining spring.
To install a bulb, align the tabs of the
bulb with the cutouts of the mounting
hole.
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PS73507
3. Install the rubber cover as shown
and fit it securely on the boss. Plug
in the connector.
Make sure the rubber cover fits snugly on
the connector and the headlight body.
Aiming is not necessary after replacing
the bulb. When aiming adjustment is nec-
essary, contact your Toyota dealer.
—Front fog lights
If either the left or right front fog burns
out, contact your Toyota dealer.
NOTICE
Do not try to replace the front fog
lights by yourself. You may damage
the vehicle.