How can I replace the left front fog light unit from a toyota prius from 2009. I cann't find a maintenance manual for this model and year.

Thanks for choosing FixYa. Remove the fog light grille panels. There are two clips on top and two on bottom that secure the panels to the bumper. (No screws) I used a small screwdriver wrapped with tape to find and release the clips. Then the panels pull out forward.

There is a small plastic clip that secures the fog light adjustment screw to the bumper. (This is a hollow plastic clip which surrounds the head of the adjustment screw). You can feel the clip just below / above (don't remember but it's the only one there) and to the side of the light socket. If you compress the sides of that clip with pliers, you can then pull the fog light assembly forward. You will notice that something else catches the assembly at this point. Look on the (I believe left) side of the fog light housing and you will find a small piece of the bumper plastic which interferes with the assembly. If you use a small screwdriver again, you can push that plastic out of the way. Now the assembly will pull out. To reinstall, simply push the fog light assembly back into the bumper and reinstall the light bulb.

Its all attached by clips and screws.Nothing much special.But its all about the procedure.Dont forget the mark the position , location of the screws you remove, so while refitting you don't face any problemTo replace fog light bulb or to replace replace complete fog light unit, click this link below:--- http://technoanswers.blogspot.com/2011/07/how-to-replace-left-front-fog-light.html ---------- This will help.Thanks.Helpmech.