What are the reasons for damage to the car window switch button?
3 Answers
Here are the specific reasons for damage to the car window switch button: 1. Window lift motor damage or poor contact in the electrical control wiring harness: If there is a burnt smell or abnormal noise inside the door panel when holding down the window button for a long time, it is likely that the window lift motor components are damaged. In this case, the window lift motor needs to be replaced. 2. Motor overheating protection: To protect the power supply circuit, most window lift motors are equipped with an overheating protection mechanism. If the components overheat, the motor will enter an overheating protection state, resulting in window lift failure. 3. Excessive resistance in the glass guide channel: During use, dust can accumulate in the door glass guide channel, increasing resistance. Over time, this may cause difficulty in raising the glass.
Last time I drove, I noticed my car window switch was broken. It seems like a pretty common issue. I suspect it might be caused by liquid seeping in—like that one rainy day when I accidentally spilled water from my hand onto the switch, and over time, the circuit board inside corroded. Frequent pressing could also wear down the plastic or loosen the contacts, leading to poor connection and eventual failure. If the car is older, dust and grime buildup inside might also interfere with normal operation. From my experience, it’s important to regularly check around the switch for moisture or grease and replace the part if needed to prevent small issues from becoming big ones. Remember to occasionally clean inside the door panel as a preventive measure.
At my age, driving older cars frequently, the damage to the window switch buttons is mostly caused by aging and wear. Small internal components like springs or copper contacts may have rusted or broken, especially accelerated by high temperatures. Lack of timely maintenance allows oil, dirt, and dust to accumulate, leading to poor circuit contact. I suggest checking the contact points early and repairing them promptly if issues arise. Otherwise, if the button gets stuck while opening the window, it's not just inconvenient but also more expensive to replace the entire module, which isn't worth it.
