
Inside the driver's door trim panel. Below is the relevant introduction: Exterior: The Citroen C-Quatre features a highly innovative design that gives a unique feel, making it very popular among young people. At the front, the two headlights are cleverly integrated with the grille, while the ducktail design at the rear enhances the car's elegant and generous appearance. Performance: The Citroen C-Quatre boasts excellent performance. The overall vehicle appears very stable and substantial. It offers high precision, especially with its steering wheel, which provides excellent handling and precise directional control, making it very convenient to drive. Additionally, the car's chassis is extremely stable, ensuring a particularly relaxed experience during long-distance travel or highway driving. The visibility is also outstanding, thanks to the large windshield that offers a particularly wide field of view, greatly enhancing the driving experience for the owner.

I drove an older Citroen C-Quatre for several years and discovered that it indeed has a hidden one-touch window lift function, operated via the window buttons on the driver's side door armrest. Typically, after lowering the window, if you press and hold the lift button for five to six seconds, you'll hear a slight 'click' sound, indicating that the one-touch window lift is activated. I've tried it multiple times, and it's very convenient, especially for quickly closing the windows on rainy days. If your car doesn't respond, it might be due to a system power loss causing memory loss or aging button contacts—simply relearn the function. Older cars often have these little surprises; for example, some models can also set a one-touch sunroof closure in a similar way. Remember to use the function regularly to keep it responsive.

That feature is located at the window switch position. I've experienced the activation process a few times. Basically, you need to press and hold the window-up button for about five seconds, and the car will automatically store the setting. After that, just a single press will trigger the auto-up function. The principle involves the electronic control unit memorizing the operation, which is great for beginners to get started quickly. If it malfunctions, check if the fuse is blown. For older cars with fragile wiring, avoid disassembling randomly. By the way, the one-touch window-up feature is convenient and safe during long-distance driving, helping to avoid distractions. The Citroen C-Quatre's design is quite user-friendly, and other models like Volkswagen also have similar hidden functions. Regular battery maintenance can extend its lifespan.

When I used my old Citroen C-Quatre, I found this feature on the driver's door panel. Just hold the window lift button for about five seconds to activate it. The operation is simple and works at the first try. If there's no response, it might be due to a sticky button or the system needing a reboot—turn off the engine and try again. One-touch window lift is super handy in crowded situations and prevents accidental hand pinching. Regular maintenance on older cars can help reduce malfunctions.


