Reasons Why Car Windows Suddenly Fail to Roll Up or Down

[McReed]

Here are the reasons why car windows suddenly fail to roll up or down: 1. Aging, dirtiness, or deformation of the glass sealing strip (including inner trim strips): This can create resistance when the glass is being raised or lowered. Generally, if the strip is aged or deformed, it's best to replace it with a new one. If it's just dirty, cleaning it should suffice. Spraying some dashboard wax or applying talcum powder (for lubrication) on the glass sealing strip usually yields good results. 2. Dirty window lift guide rails: This is also a lubrication issue. Cleaning the window lift guide rails and applying grease can eliminate the problem. 3. Low battery charge: A low battery charge may also cause difficulty or failure in window operation. When the engine is off, the windows are powered by the battery. If the battery charge is too low, window operation may become difficult. 4. Motor malfunction: If there's sufficient power and no resistance, but the window still operates with difficulty, it's likely a motor issue. 5. Window regulator failure: This includes issues with the window lift guide rails, cables, or sliders. In such cases, the only solution is to replace the window regulator.