How do i change drivers side headlight on 2006 toyota prius ?

SOURCE: Need to change headlight on 1998 Toyota Corolla

Unless you have really small hands, you are going to have to unbolt the battewry bracket, and move the battery backwards as far as possible. Then you will be able to see the connection where the bulb socket mounts behind the headlamp. There are 2 different styles of bulbs that you may find...
If you see a large rubber ring, remove it, and undo the silver clip to extract the bulb.
If the wiring/socket goes directly into the back of the headlamp, simply twist the socket 1/4 turn, and pull it out.

SOURCE: changing a headlight

As with most auto headlights, you will access them from within the engine compartment.

There will be a wiring harness that plugs into the back of the lamp. Be careful not to damage the locking clip that holds the wire firmly onto the lamp. Move the harness out of the way and grasp the connector portion of the lamp and twist COUNTERCLOCKWISE to release the lamp from the housing, and plug the bad lamp out.

When installing the new lamp, be sure NOT to touch the glass lamp as the oils from your skin can damage the bulb by creating a 'HOT SPOT'. As a rule of thumb and good auto maintenance you should ALWAYS replace both lamps at the same time. Headlamp bulbs deteriorate over time and will get dimmer as they age. Why get dirty twice when you can do it just one time. Besides most lamps are sold in MATCHED pairs so the intensity will be the same for both the left and right sides of the car.

Hope this answers your question.

Cheers,

Keith

SOURCE: brake light stay on toyota prius 2006

look up under your brake pedal and you should see a little switch. Odds are the switch is faulty and stuck on and will need to be replaced

SOURCE: How do I fix the headlights of my 2007 Toyota Prius comes on/off

it is problem with relay of headlight just chech your fuse box cover where it mention that which relay is for what, go at head light relay and replace that with other one like horn,wiper after that drive the car if problem is solved than replace that first relay, if problem is still there iyou have to replace combination switch.

SOURCE: driver side headlight out on my 2006 toyota

as bulbs are cheap to buy you may just as well buy one,and if it works,think of all that work you DONT have to do.......