
Car keys can be duplicated. However, you need to bring your ID card and the vehicle's registration certificate to the corresponding 4S store to have the key duplicated. Keys duplicated elsewhere can only start the car but cannot unlock the doors. Keys duplicated at a 4S store will function the same as the original key. Functions of smart keys: When the driver approaches the car with the key in their pocket, the key and the car begin exchanging preset command information via radio waves. Subsequently, the car's locking system, security system, and engine control system are all activated. When opening the door, as soon as the driver touches the door handle, the sensor detects this pressure, and the servo motor unlocks the door while the turn signals flash twice. Then, the seat, steering wheel, and exterior rearview mirrors automatically adjust to the positions suitable for the owner. Precautions for using smart keys: Do not place the smart key together with mobile phones or computers. Many car owners habitually store their smart keys with mobile phones, laptops (or portable radios), which is actually not advisable. The frequencies from computers and mobile phones can interfere with the smart key, potentially causing malfunction in extreme cases. When near TV towers, power plants, gas stations, radio stations, large display screens, airports, or other facilities that generate strong radio waves or electronic noise, the smart key may be interfered with in extreme cases, leading to malfunction.

Yes, BMW car keys can certainly be duplicated, but the process is much more complex than for ordinary cars. I personally experienced this two years ago when I accidentally lost my key and was in a panic. I went directly to a BMW 4S dealership, where they informed me that the key contains an anti-theft chip. They first had to verify the vehicle information and owner identity to prevent unauthorized duplication. This takes extra time, usually one to two hours, and requires specialized equipment to program the new key. The cost isn't cheap—I remember paying nearly 2,000 RMB. The staff explained that this is an anti-theft feature, which is a good thing as it ensures the car's security. If you lose your key, they recommend using a spare key as a temporary solution or downloading the BMW app, which allows remote locking to prevent risks. In short, duplicating the key is possible, but it must be done through official channels.

BMW key duplication isn't as simple as copying old-fashioned keys. As a tech enthusiast, I know these keys contain electronic codes that require connection to the vehicle's computer system during pairing, much like programming new codes. BMW dealerships have specialized equipment to ensure anti-theft mechanisms remain uncompromised. Costs typically start around a thousand yuan, potentially reaching several thousand depending on the key model. For budget-conscious owners, some professional automotive locksmiths offer the service, but always verify their credentials to avoid scams. Looking ahead, smart keys are trending toward mobile app-based unlocking, eliminating physical key hassles. Remember to backup your vehicle documents before duplication – safety first.

BMW key duplication is possible, but requires professional tools. With years in auto repair experience, I can confirm these keys contain anti-theft chips - improper duplication may trigger alarms or even lock the vehicle system. Recommended solutions are authorized dealerships or certified locksmiths who use diagnostic equipment to program new keys via the car's computer. The process takes about one hour typically, with costs ranging from 800 to 3000 RMB depending on the model. Why the high price? Advanced anti-theft features protect owners' interests. If lost, don't panic - use your spare key first or contact after-sales service for temporary vehicle locking.


