We don't have a lot of Infiniti QX4 AC / heater problems on file — feel free to add yours here. The most common QX4 AC / heater problems occur at 134,000 miles. Click on a year below.

Worst AC / Heater Problems
heater blows cold while idling 2002 Infiniti QX4
ac is leaking under the dash and water is on the floor 2000 Infiniti QX4