Gear6

How to replace the cabin air microfilter in 2004 Nissan Quest -

1. Open glove compartment and disconnect a thread retaining glove compartment lid.
2. Unscrew 7 phillip screws along the glove compartment's perimeter
3. Carefully pull the compartment unsnapping its two clips. Disconnect the bulb and remove the glove compartment.
4. Locate a plastic filter door with three hex 7/32 screws. Mine was brown color shaped as letter "I". It was on the left wall under instrument panel, closer to far left corner, next to two aluminimum pipes (careful could be hot).
5. Unscrew three screws and remove the filter door.
6. There are two filters in the slot one on top of another.

The rest should be clear. You will work in akward positions as space is very limited. The whole thing should take no more than one hour. My local dealer charges $160. Microfilter could be purchased on the web for around $30+s/h.