What Are the Hidden Functions of Car Keys?
2 Answers
In addition to the daily use of locking and unlocking the vehicle, car keys also have some hidden functions, mainly including the following five: 1. Window control after engine shutdown. For drivers who have already exited the vehicle, pressing and holding the unlock or lock button can automatically open or close the windows. 2. Automatic trunk opening. The car key has a trunk opening button; pressing and holding it or pressing it twice can automatically open the trunk. 3. Remote window control. 4. Opening a single door. Pressing the unlock button only opens the driver's door, leaving other doors locked. 5. The small piece of paper attached to the car key. The small piece of paper is printed with a barcode, which is the car key's identification code. It serves as proof for reissuing a new key if the original is lost.
As a regular driver, I find the hidden functions of car keys incredibly practical. Holding down the unlock button for a few seconds rolls down all the windows for ventilation, which is great for cooling down the car in summer before getting in. Similarly, holding the lock button automatically raises the windows to prevent rain from getting in. The trunk button allows one-touch opening, saving the hassle of fumbling for keys. Some car keys support remote engine start, making it convenient to warm up the car in winter or cool it down in summer before heading out. There's also a car locator feature—pressing a button makes the lights flash and the horn beep, making it easy to find your car in large parking lots. These small details make daily life more efficient. I recommend checking the user manual for more surprises—you might even find that the sunroof can be controlled via the key. Don’t forget to replace the battery when it runs out; just check it regularly. I’ve always thought of these as thoughtful gifts hidden by manufacturers—once you use them, you’ll see their value.
