A damaged bumper on your Toyota Corolla is more than just a cosmetic problem. It provides less protection to the car in the event of another collision, so you need to remove that bumper to replace it. You will likely need to replace the bumper beam underneath the cover as well. You can also remove the bumper cover so you can install your own custom-made car kit bumper. You may need to adjust these steps if the bumper cover has been broken off or severely damaged in any way.
Apply the parking brake. Raise the front end of the car with its jack and support it on jack stands.
Disconnect the entire battery from the car, starting with the negative cable and then the positive one. Wait at least 2 minutes for all backup power supplies to be depleted, especially for the airbag.
Disconnect the electrical connectors for the fog lights if the Corolla is equipped with them. The electrical connectors are at the back of the bumper fascia.
Remove all the fasteners and the inner bumper well liner connecting the bumper to the fenders. Each bumper should have nine fasteners. Pop up the centre button on the plastic fasteners with a small screwdriver, but don't remove the centre buttons.
Detach the engine splash panels from the underside of the bumper. Remove the screws and plastic pins securing the bumper cover along the underside. There is one fastener at each corner of the bumper and two near the middle.
Remove the two screws for the grille and remove the grille. The screw also secures the bumper cover on the top side. There is one screw on each side of the grille.
Lift the bumper cover and pull it away from the car carefully. You will need at least two people to do this.
Re-connecting the bumper cover is the reverse process of removal.