Why Can Car Windows Only Roll Down but Not Up?

[HectorAnn]

If the car window can only roll down but not up, check for debris in the window track or a malfunction in the window regulator. Additional relevant information is as follows: 1. Troubleshooting Method: Turn on the ignition switch, hold the switch in the up position, and after the window reaches the top, continue holding for more than 3 seconds. Release the switch and immediately press and hold it again to lower the window to the bottom for more than 3 seconds. Then, repeat the upward movement once more to complete the initialization process, restoring the window's up-and-down function. This method is effective for most car models. If the function is not restored, it is necessary to visit a professional repair shop for inspection. 2. Window Regulator: The window regulator is the mechanism that raises and lowers the car door window glass, mainly divided into electric window regulators and manual window regulators. Nowadays, many car door windows generally use button-operated electric regulators, employing electric window regulators.