Why can't the car window roll up when it rains?

[LeCassidy]

If the car window cannot roll up, it may be due to a malfunction in the window switch or the lifting mechanism. It is recommended to have it checked and replace the lifting mechanism or switch if necessary. For older cars, window lifting issues are relatively common. The specific reasons for difficulty in window operation are as follows: 1. Reason one: The glass channel may be deformed or damaged—it is advised to replace the glass channel. 2. Reason two: The screws securing the lifter may be loose—tighten them using professional tools. 3. Reason three: The window regulator may be damaged—seek a professional repair shop for replacement or repair. 4. Reason four: Misalignment in the guide rail installation—repositioning is required, preferably by a 4S shop or professional repair service.

[DelLeah]

My car had this issue too - the windows would get stuck whenever it rained. The root cause was rainwater getting into the window regulator system inside the door. The rubber weatherstripping along the window edge had aged and deformed, allowing water to seep through the gaps. The accumulated dust in the window tracks would turn into mud when wet, dramatically increasing the sliding resistance. An even worse scenario is when the motor gets damp and shorts out - you'd press the window switch with zero response. I'd recommend replacing cracked weatherstrips proactively, and remember to clean window tracks before rainy seasons. Last time at the repair shop, the mechanic mentioned many modern cars have switched from grease to silicone-based lubricants in the tracks for better waterproofing.

[LeAiden]

Window regulator failure is a common issue during rainy weather, primarily due to seal system malfunction. When the rubber window guide channels age and lose elasticity, rainwater seeps into the glass interlayer. Water accumulation in the track grooves forms sludge deposits, significantly increasing friction and causing jamming. More critically, rainwater may penetrate the regulator motor circuit board, leading to short-circuit failures. Additionally, when door drainage holes are blocked by fallen leaves, accumulated water can submerge the regulator wiring. Solutions include replacing door waterproof membranes, regularly cleaning track debris with a vacuum cleaner, and checking if drainage holes at the bottom of doors are clear. Some premium models now feature concealed drainage channel designs that effectively reduce such problems.

[MacKeegan]

Window failure during rain is typically caused by three overlapping malfunctions. Firstly, aged and cracked rubber guide channels allow rainwater to directly infiltrate the lifting tracks. Dust inside the tracks mixes with water to form mud-like deposits, drastically increasing glass friction. Secondly, metal components in the tracks rust when exposed to rain, creating additional resistance. Finally, moisture causes signal disruption in the control module, triggering erroneous activation of the anti-pinch function. I once got trapped during a heavy rainstorm and had to use a heat gun to dry the tracks before escaping. For prevention, it's recommended to apply rubber protectant to seals before rainy seasons and clean glass guides quarterly with specialized cleaners, which significantly reduces failure rates.

[GiannaMarie]

The root cause of stuck car windows in rainy weather lies in waterproofing structure failure. The window regulator track inside the door is positioned very close to the glass. When the sealing strips age, rainwater drips directly onto the motor gear assembly. Rust formation on metal components due to water exposure leads to insufficient torque, and forcing the window operation under such conditions may burn out the motor. Another critical factor is water-absorbing rubber guide channels that swell up, which can clamp the glass and increase resistance by over 200%. Modern vehicles now use hydrophobic coating tracks combined with improved motor protection box designs. My last repair cost 800 yuan to replace the entire sealing system, and the mechanic recommended checking door waterproof membranes every two years - money well spent indeed.