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How to Replace Horns 10-15 Toyota Prius

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  1. step : Removing the Bumper Cover (0:28)
    • Pry up the push clips with a flat blade screwdriver
    • Remove the five clips from the top of the bumper
    • Remove the 10mm bolts from the bumper
    • Raise and support the vehicle
    • Remove the 10mm bolts from the splash shield
    • Remove the three push clips from the splash shield
    • Pull the splash shield down to reach the headlight wiring harness
    • Disconnect the headlight wiring harness
    • Remove the clip from the fender liner on either side with a flat blade screwdriver
    • Remove the 10mm bolt from the fender liner
    • Pop the bumper cover out of its clips
    • Lift the bumper up and off
  2. step : Removing the Horns (5:16)
    • Remove the bolt from the horn with a 12mm socket and ratchet
    • Disconnect the wiring harness
  3. step : Installing the Horns (6:05)
    • Connect the wiring harness
    • Tighten the 12mm bolt to the bracket
  4. step : Installing the Bumper Cover (6:30)
    • Insert the bumper cover into place
    • Snap the clips on the bumper in
    • Align the fender liner
    • Press in the clip to either side of the fender liner
    • Tighten the 10mm bolt to the fender liner
    • Tighten the 10mm bolt to the bumper cover
    • Press in the push clips to the bumper cover
    • Place the guard onto the bumper cover
    • Press in the push clips
    • Connect the turn signal wiring harness
    • Tighten the 10mm bolts to the splash shield
    • Press on the three clips to the splash shield

Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!

Pop your hood with this lever here. Find the safety release and pull it up. Prop your hood up just like that. Remove this trim piece. There's three clips: here, here, and here. The trick to these is you just push them in with your finger like that. They'll go in a little bit. Then you can pull this right up. Put that off to the side.

Remove the five clips on the top of the bumper right here, and then two more on this side. You can use a plastic trim tool from just to pull these up. Get under here, and pull up like that. Take a ratchet and a 10mm socket and remove these two bolts. These feel a little bit rusty, so I'm going to use some rust penetrant. You definitely don't want to break these, so you might want to tighten it a little bit. Let the rust penetrant work itself in the threads, then loosen it back up very carefully. When you feel it get real tight, I'll tighten it back up. Repeat this process until they're removed.

We're going to raise and support our vehicle. We have a two-post lift, but you can do this in the driveway on the ground. There's a series of 10mm bolts along the bottom edge of the bumper. We're going to soak these in rust penetrant because they look pretty rusty. Now you can remove those six 10mm bolts. These also have a spot for a Phillips, but a 10mm is going to be easier. There's three clips just like the ones on the top of the bumper: one here, one in the center here, and one on this end here. You remove those.

Over on the driver side you can pull this little panel down. Before we remove the bumper, we want to disconnect this harness here. You want to push in on this lock here, pull down, and disconnect that harness. In the wheel well there's a 10mm bolt here you'll have to remove and a trim clip here. We'll take a flat blade screwdriver and spin this horizontal, and then use a trim tool to pull that out just like that. Now you can remove the 10mm bolt. Repeat the same steps on the opposite side.

You want to pull the fender liner back a little bit, grab the bumper, and just give it a good tug. If you need to, you can very carefully slide a trim tool in here and just very lightly pop this out just like that. It'd be helpful to have somebody to hold the other side of this while you remove the other side. Now you can remove the bumper.

There's two horns: one here, and one here. The process to remove and replace them is the same. Going to use some rust penetrant on these because they are a bit rusty. We'll just do this one to show you how to do either one. Use a 12-mm socket and ratchet.

I'm going to use an extension just to make it easier. Remove these. Hold onto the horn while you remove the bolt. Then you can turn this around. You push down on this tab here. Pull the connector out. Just got to work at it a little bit. And your horn's removed.

Reinstall your horn. Reconnect the connector on the back, like that. Line it up. Reinstall your 12-mm bolt. Tighten it down with your 12-mm socket, ratchet, and extension.

Reinstall your bumper. Line it up on the top. Hold the front. Line up the edges. Just snap them back into place just like that. Push your fender liner back into place just like that. Make sure this clip goes back in at the same time. Reinstall this piece. Just push it into place. I'll reinstall your 10mm bolt. Repeat these steps on the opposite side.

Reinstall your clips on the top. Just make sure these are pulled out like that. Push the base in and pop the top on. There's one in the center here, and two on each end. Reinstall your two 10mm bolts at the top here. Lay this piece back where it was. It was over this rubber gasket. Line it up. Push your trim clips out. Might help to have something hard to push against. You want them to be like that. Feed those in.

Reinstall the three trim clips on the top. Reinstall your connector for your turn signals. That will click. Feed this back up here like that. Reinstall your bolt here and your trim clip there. Now you can reinstall the rest of the bolts and trim clips on the bottom of the bumper. Close your hood, and you're all set.

Thanks for watching. Visit us at for quality auto parts, fast and free shipping, and the best customer service in the industry.

Tools needed for replacement:

    Materials, Fluids, and Supplies

  • Rust Penetrant

  • Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket

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