
There are two meanings for the 'hold' button on a car key: 1. The 'hold' button on a car key usually means long-press. Some keys have a trunk symbol printed on it, indicating that holding it down will open the trunk. This simplifies the process of opening the trunk after unlocking the car. 2. The 'hold' button on a car key also has another function: a remote engine start button. Within a certain distance, holding it for 2-3 seconds will automatically start the car. This feature is useful in winter and summer to adjust the interior temperature in advance. When using remote engine start, there's no need to worry about car theft, as the central locking system remains engaged. The remote control range is typically no less than 50 meters, allowing you to start the car remotely from home or work.

A couple of days ago when I test drove the new SUV, I noticed a 'hold' button on the key fob. The salesperson told me that pressing this button for more than 3 seconds can remotely start the engine. I tried it and it actually worked – the engine automatically warms up before entering the car in winter, and the air conditioning turns on in advance. This feature is especially practical for users in northern regions, avoiding issues like engine damage from cold starts and enduring freezing temperatures. Note that some models require pressing the lock button first before holding the 'hold' button to trigger it. Different brands have different logic – for example, American cars often use it for remote start, while German cars might control window operations. Low in the key fob can affect the response range, so it's recommended to check and replace it regularly.

Once when helping a friend fix his car, I noticed the 'hold' button on his key fob wasn't working. This button is specifically designed to prevent accidental presses—a short press locks the doors, while a long press activates advanced features. For example, with my own car, a single press unlocks the trunk, but holding it for two seconds makes the lid pop open automatically. It's mainly used in vehicles with power tailgates to eliminate the hassle of manually lifting the trunk. The guys at the modification shop mentioned that this feature requires the car to support it natively. Some aftermarket modifications offer similar functions but with less stability. If a long press doesn't work, try replacing the key fob first—that usually does the trick.

The neighbor aunt asked me what the button labeled 'hold' on her car key does. I told her that holding it down can control the windows. If you find the windows aren't closed on a rainy day, you don't need to run back to the car; just hold this button upstairs to raise the windows. Many cars now come standard with this feature, but Japanese cars usually use the unlock button to close the windows, while the 'hold' button controls things like seat ventilation. If the remote distance isn't enough in an underground garage, try getting closer. Older car models might need to visit a 4S shop to activate this function through a program update.

Last time I rented a car, I found the key had a 'hold' function—long-pressing it would activate the car-finding feature. In the parking lot, pressing it once would make the horn beep and the lights flash, which was super convenient. My friend's is even more advanced—long-pressing can activate Sentry Mode. But now, with new EV brands, this button is often used to adjust AC temperature, like holding it for three seconds to set it to 25°C. When buying a used car, be aware that some older models have a 'hold' button that's just a placeholder and doesn’t work. For modifications, you’ll need to confirm the vehicle’s computer supports the protocol.

The mechanic at the repair shop told me that the hold function on keys is now a multi-purpose button. The long press on my car's key can activate seat heating. The manufacturer's original design intention was to allow car owners to control the vehicle's state without entering the car. Once in the middle of summer, I held it down for five minutes, and when I got in, the AC was cool and the seats weren't hot anymore. But it's important to note that the car must support internet connectivity—older models might not be able to trigger these functions. New car manuals will specify the exact features, and you can even unlock new functions by upgrading the system at a 4S shop.


