Depending on the model year and body type of attachment are different.
Front bumper
-open the hood.
-under the hood take out the rivets and remove the plate.
-under the pickguard, take out the clips and remove the grille (held by the latches).
-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 and removed the fender liner.
-attach 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.
-in the side panels of the trunk open stub (needed to access the rear part of the rear lights) if the doors no need to remove the side trim.
-under the hatch Unscrew three nuts on each side and remove the tail lights.
-the rear lights take out the caps and Unscrew the screws that secure the top.
-on the perimeter in the lower part and pull out the caps and Unscrew the screws (inserted and spun up).
-in the wheel wells, Unscrew the screws and take out the caps, release the fender liner.
-turn down the lockers to the side and Unscrew one screw on each side (spun upwards) holding 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.
How to remove front and rear bumper Nissan Tiida C12 (2011-2018)
How to remove front and rear bumper Nissan Tiida C13 (2015-2018)