What causes weak window ascent but strong descent?

[AlyssaLee]

The reasons for weak window ascent but strong descent are as follows: Excessive dust in rubber tracks: Generally speaking, if abnormal noises occur during window operation, it is usually caused by excessive dust accumulation in the window rubber guide tracks. This increases resistance during movement, making operation less smooth. Moreover, if the dust contains particulate matter, it may produce abnormal noises. Window rubber aging: Besides dust accumulation, aging window rubber can also cause difficult window operation. In this case, simply applying lubricant can help. Spraying it on the rubber serves two purposes: providing lubrication and maintaining rubber flexibility to reduce cracking.

[VioletDella]

I've also encountered the issue where the power window struggles to go up but works fine when rolling down, which is quite annoying. The window regulator motor might have more severe wear in one direction, causing weakened lifting force. Additionally, if the window tracks are dirty or have excessive resistance, it can make the upward movement more difficult. I once tried cleaning the tracks myself using silicone-based lubricant spray, which did help alleviate the problem. However, if cleaning doesn't solve it, the motor itself might be faulty or there could be loose wiring connections. This situation becomes particularly unsafe during rainy days as water can accumulate when the window can't be properly closed. I'd recommend against DIY fixes - it's better to visit a reliable repair shop to check the electrical circuits before the problem worsens.

[LondonAnn]

The window moves sluggishly when going up but descends quickly, which really frustrates me. I suspect it's due to worn contact points inside the window switch, preventing sufficient current flow during ascent. Alternatively, the balance strap inside the door might be stuck, affecting only the upward movement. Once, I was in a hurry to leave when the window jammed halfway, leaving me drenched in rain. Later at the repair shop, they found slight wire corrosion—replacing it fixed the issue. This isn't a minor problem; prompt inspection is safer. Regularly prevent moisture from entering the door interior to reduce part rusting. Only with repairs done can I drive with peace of mind.

[VanSamuel]

I've encountered the issue of weak window rolling up but strong rolling down quite a few times. It's usually caused by motor aging or excessive track resistance leading to insufficient upward current. Try simple solutions first, like operating the window switch repeatedly to see if it improves. If not, it might be a blown fuse or short circuit. Safety first - never manually push the window while driving at high speeds. Regular maintenance of the window system can prevent this problem.

[Julia]

The window struggles to go up but moves down smoothly, which is quite common from a mechanical perspective. The motor encounters greater resistance when raising the window due to insufficient voltage supply, whereas lowering the window faces less resistance, hence the smooth operation. Possible causes include loose internal door cable wiring or worn motor bearings. I recommend first checking if the control switch is functioning properly before considering replacing motor components. Delaying repairs may lead to a complete failure of the window regulator system. Inspecting the wiring is also crucial to prevent potential short circuits. Safe driving relies on attention to detail.