Remove the bumper and fix the crack with transparent tape to prevent the crack deformation during operation.
Use a soldering iron or a plastic welding gun to weld the inside and outside of the crack, and use a soldering iron to fix the inside of the crack; For the outside of the crack, use a plastic welding gun to melt the plastic electrode.
Sand the crack and surrounding area, using sandpaper and a sander to remove paint around the crack, then fill the crack with putty ash.
Spray paint to match the vehicle color, and if there is a color difference after the crack repair, spray paint is needed to align the repaired area with the surrounding body surface.
Install the bumper and check the repair effect to ensure that the bumper is installed correctly and the repaired appearance is satisfactory.
If the cracks in the bumper are small, consider using scotch tape and decorative stickers for temporary treatment. For larger cracks, the bumper may need to be replaced. If the vehicle has damage insurance, consider repairing it through your insurance company. The cost of repair depends on the extent of the damage and the repair work required.
