One problem related to defogger has been reported for the 2004 Nissan Quest. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Nissan Quest based on all problems reported for the 2004 Quest.
Ventilation system does not work properly. It blows hot air on all settings without the air conditioning on. Nissan acknowledges the problem exists on this minivan but says there is no fix for it.