Center ventilator
WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Hook a cloth-covered flat-bladed screwdriver into the right-side groove section, and pull out.
CAUTION:
To prevent the screwdriver from slipping and causing damage to the surface, pull out while applying pressure on the screwdriver towards the right.