What Are the Hidden Functions of a Car Key?
2 Answers
In addition to the daily use of locking and unlocking the vehicle, car keys also come with several hidden functions, mainly including five scenarios: 1. Window closing after engine shutdown. For drivers who have already exited the vehicle, pressing or holding the lock button can automatically close the windows. 2. Automatic trunk opening. Many keys have a trunk button; holding it down or pressing it twice can automatically open the trunk. 3. Remote window opening. 4. Opening a single door. Pressing the unlock button can open only the driver's door, leaving other doors locked. 5. The small paper tag on the key. This serves as proof for key replacement in case the key is lost.
Last time I specifically researched the little secrets of car keys and discovered many practical functions. Holding down the unlock button can lower all windows, which is especially useful after summer sun exposure. Pressing the lock button for a long time can raise the windows, eliminating the need to run back to the car to check. Some cars can even remotely start the engine with the key, making it super convenient to warm up the car in winter. The most surprising feature is the hidden mechanical key—when the battery dies, you can rotate the key cover to take it out for emergencies. Pressing the trunk button twice in a row can open the trunk separately, which is most practical when carrying items. Many cars also allow adjusting the sensitivity of key functions in the system settings.
