1) *Cabin Air Filter* It may be located behind the glove box, behind a small hinged door, below/behind the instrument cluster, or even in the engine bay. This should look like foam with pleats in it, similar to a furnace filter.
2) *Engine Air Filter* It may be located inside a large black housing on the top or side of the engine. This type of filter is typically paper or cotton like in texture.
If you are unable to locate them please refer to the owner's manual or consult a trained professional.