Depending on the model year and body type of attachment are different.
Front bumper
-open the hood.
-pulls under the hood of five caps (inserted from top to bottom) that secure the upper part.
-Unscrew the screws and take out the caps (twisted and inserted from the bottom up) around the perimeter at the bottom.
-wrenched the wheel to the left or right side, depending on which side of the bed will be dismantled.
-wheel arches take out the rivets that attach the fender liner.
-remove the fender liner to the side and Unscrew one screw on each side holding the bumper corners to the wings.
-with the assistant release the latch in the wings (pull on yourself) and gently pulls the bumper itself.
-remove the connectors from the fog lights (if any).
-remove connector from the PDC (if any).
Rear bumper
-open the trunk lid.
-remove tail lights.
-the rear lights take out one piston and Unscrew one screw on each side.
-on the perimeter in the lower part and pull out the caps and Unscrew the screws (inserted and spun up).
-wheel arches take out the rivets that attach the fender liner.
-remove the fender liner to the side and Unscrew one screw on each side (spun upwards) that attach the bumper to the wings.
-with the assistant release the latch in the wings (pull the corners themselves), and gently pulls the bumper itself.
-remove the electrical connectors (if any).
How to remove front and rear bumper Nissan Tiida C11 (Versa) (2004-2014)
How to remove front and rear bumper Nissan Tiida C13 (2015-2018)