Can Car Mechanical Keys Be Duplicated?

[LeLucia]

Car mechanical keys can be duplicated, but for car keys with built-in chips, they must be configured at a professional 4S dealership. Keys duplicated on your own can only be used to open the car door and cannot start the car, as the original key contains an anti-theft chip that requires specialized decoding and encoding equipment for proper configuration. Below are the functions of car mechanical keys: 1. Close windows after turning off the engine. 2. Locate the car in a parking lot. 3. Automatically open the trunk. 4. Remotely open windows. 5. Open the driver's side door. Below is the principle of car mechanical keys: They consist of a transmitter and a receiver. Powered by a battery, the key emits a low-power radio wave, which is then received by the car's antenna. The electronic control unit (ECU) identifies the specific signal code, and the system executes the actions of locking and unlocking.

[StellaRose]

After I lost my car key last time, I quickly went to a key duplication shop and found that mechanical car keys can be completely duplicated. For most ordinary car keys, especially those purely physical ones without chips, you can simply go to a professional locksmith or a 4S dealership and get it done for just a few dozen yuan. They use specialized machines to copy the key grooves, and it only takes a few minutes—super convenient. However, if it's a newer car key with an electronic chip, additional programming is required, or the car won't start. I remember when I duplicated a key for my old Accord, it only cost me 30 yuan; but later, when I got a new car, duplicating the key cost over a hundred yuan and took an hour. It's advisable to keep a spare key handy and not wait until you lose one to panic. From a practical standpoint, key duplication is quite reliable, but always choose an authorized shop to avoid the risk of unauthorized copying.

[MilaLynn]

Of course, duplicating a car mechanical key is doable. As a driver myself, I've encountered this situation. For example, those smooth keys without electronic components can be copied quickly and cheaply at a roadside locksmith, usually done within half an hour. However, if the key has a chip, like those for keyless ignition, it can't be duplicated casually—you must go to a 4S shop or authorized service center for programming and unlocking, otherwise the car won't start. Costs vary from tens to hundreds depending on the car model and shop. I think it's important for beginners buying used cars to check the key type and test it after duplication to confirm it works. On a related note, having too many keys duplicated might affect security, so avoid unofficial channels. A money-saving tip is to take good care of your keys to avoid losing them and unnecessary trouble.

[McSawyer]

Car key duplication is quite straightforward. For those mechanical keys without electronic chips, I've had a few duplicated before—just find any key-cutting stall and they can copy it quickly and cheaply. However, if it's a key with a chip, you'll need additional equipment to program it, otherwise the car's alarm might go off during inspection. After duplication, always test the door locks and ignition to ensure everything works perfectly. Before getting a key duplicated, it's best to check your key type to avoid unnecessary expenses.

[MacDante]

When I lose my car key, my first thought is to get a replacement. Mechanical car keys can be duplicated easily—for example, a purely physical key can be copied for just a few dozen yuan, and locksmiths can do it quickly. However, keys with chips are more expensive, costing several hundred yuan at a 4S shop, and they also require programming. In terms of cost-effectiveness, comparing locksmiths and 4S shops, I recommend locksmiths to save costs, but for safety priorities, it's better to go to an authorized shop. By the way, if a key is lost, it should be replaced immediately to prevent unauthorized use of the car. In the long run, duplicating a key costs no more than a hundred yuan, which is worth it.