: It sounds obvious, but the window lock button on the driver’s side can sometimes get stuck or be pressed accidentally, disabling all other windows.
For those unlucky enough to encounter a window that remains unresponsive despite fuses and resets, the issue is almost certainly mechanical: a failure of the window regulator or motor. The Mazda 3’s door panels are relatively tight, and over time, the window regulator—the scissor-like mechanism that raises and lowers the glass—can bind or break. Furthermore, the electrical wiring harness that passes from the car body into the door (via the rubber boot in the door jamb) is a known weak spot. Constant flexing every time the door opens and closes can cause the copper wires inside the boot to fatigue and snap. This results in a loss of power to the door entirely. Diagnosing this requires peeling back the rubber boot to inspect for broken wires—a common issue on second and third-generation Mazda 3s. mazda 3 electric windows not working