
It is not necessary to remove it as long as it does not cause any malfunctions. Here is some relevant information: 1. Noise generation: The business card may rub against the car door and produce noise, but for the vehicle, the noise generated by the card is almost negligible. 2. Jamming the window lifting mechanism: This issue is also unlikely to occur because business cards are relatively thin and usually fall directly to the bottom of the door panel, thus having minimal impact on the window lifting mechanism. 3. Inspection: Before driving, if you notice a small card on the window, be sure to remove it first. If you are not careful, the card may be pulled into the car door when the window is rolled down.

When I used to help out at an auto repair shop, I saw many similar cases. If a business card falls into the window gap, it's crucial to remove it promptly. The main issue is that there are drainage holes and window lift mechanisms between the window and the door. If a card gets stuck there, rainwater can't drain properly and will accumulate inside the door, leading to rust on the metal or short circuits in the wiring over time, which can cause major problems. Additionally, a card stuck in the window track can cause the glass to jam or make strange noises, affecting driving safety. I recommend trying to gently fish it out with a thin hook or a paperclip as soon as possible. If you can't retrieve it, take it to a repair shop and have a technician disassemble the door to remove it—it's not a big job and the cost is usually low. Don't ignore it out of complacency, as a small issue left unattended can turn into a major repair. From my experience, being mindful of not dropping things into gaps in the first place can save a lot of hassle and make driving much more worry-free.

As a seasoned driver with over a decade of experience, I know all too well about business cards falling into car windows. Once, my business card slipped into the gap of the passenger side window, and I didn't pay much attention. A few weeks later, the window regulator started making clicking noises, and the repair cost me over 200 yuan. I strongly recommend retrieving it because the door's internal design includes a drainage system. A blocked card can lead to water accumulation, fostering mold growth or corroding components. Moreover, foreign objects stuck in the window track can cause the motor to overheat and fail, posing multiple safety hazards. Retrieving it is actually quite simple—using tape or a thin tool should do the trick. If that doesn't work, a quick visit to a repair shop is inexpensive. Addressing the issue early prevents bigger problems, and hearing strange noises while driving is just plain annoying. In short, cars magnify small issues—don't be lazy.

I often remind my friends that leaving a business card stuck in the car window can really cause trouble. In terms of cost, if it triggers a window regulator malfunction, repairs can cost at least a few hundred yuan; worse, if it blocks the drainage hole leading to water accumulation and corrosion of the door lining, the repair bill gets even steeper. It’s far better to act promptly and remove the card—using tweezers or visiting a quick-service shop. This prevents potential major issues, saving both money and hassle. Regularly clearing small items around the windows helps too. With long-term car use, diligent maintenance is key—neglecting small issues can turn them into big burdens.


