What's the reason when the car sunroof responds but fails to open?
2 Answers
It may be due to severe lack of lubrication in the sunroof sliding track, causing the sunroof seal to adhere to the car body. Here are some relevant introductions about sunroofs: 1. Functions of a sunroof: It can quickly lower the temperature, eliminate fogging, and rapidly exchange fresh air. Opening the sunroof while driving can quickly increase the air circulation speed inside the car, thereby improving ventilation in the cabin. 2. Precautions for sunroof use: Open the sunroof in traffic jams to prevent exhaust fumes from entering the car. During traffic congestion when all vehicles are stationary, exhaust emissions inevitably disperse in the air. Open the sunroof after sun exposure to balance interior temperature. In hot summers, when the car has been exposed to intense sunlight and the interior temperature becomes extremely high, the owner should promptly open the sunroof.
I had the same issue with my car's sunroof recently. When pressing the button, you can hear the motor humming but the sunroof just won't open. Common causes include dust, leaves, or small stones stuck in the sunroof tracks, creating too much resistance to move; or the motor might be old and lacking power; it could also be poor contact in the switch causing incomplete signal transmission. First, try cleaning the tracks yourself—use a soft brush or vacuum to remove debris and spray some track lubricant to see if it helps. If it still doesn't work, avoid forcing it open to prevent damage to the glass or mechanism, and it's best to take it to a repair shop as soon as possible to check the wiring or control module. Remember to clean the track area regularly during car washes to prevent dirt buildup.
