SWITCHDOCTOR Window Master Switch for 1998-2002 Toyota Corolla;

The driver's window is most likely to stop functioning, since it gets the most use. If the driver's window fails, most likely the window master switch is the culprit. The next most likely cause is the window motor. There is almost never another reason, although the window could become stuck due to derailment. This could happen if someone or something weighted down the window with an elbow, etc., as it was being raised. The window motor may fail all at once, but it usually works intermittently before failing completely. (This is a classic symptom in Toyotas!) The window will stop in one place and then move a little more after waiting a few minutes. The motor is most likely to fail when putting the window up, due to the much greater load placed on the motor when moving the weight of the window against gravity. If the window worked intermittently going up and then failed, it could be the motor or the master switch. It is advisable in these cases to fully diagnose the problem before buying a part, if the expense of doing so is not greater than say $40 or the cost of the master switch, whichever is less