when you want to purchase Car key, don't just Look at the appearance!

When choosing car keys, many people tend to fall into the trap of "selecting based on appearance". In fact, precise matching relies on two core pieces of information, and professional operation is indispensable for subsequent use. These two key links directly affect whether the key can be used normally

First, when purchasing, the accurate key code and FCC number must be provided. The key code is the "identity marker" of a vehicle key. Each original factory key corresponds to a unique code, which directly relates to the basic compatibility between the key and the vehicle. The FCC number (Federal Communications Commission Certification Number) is a compliance certificate for the wireless function of keys, determining the frequency and security of key signal transmission. Even if keys of different models and from different years look highly similar, their codes and FCC numbers may still differ. If you only choose based on the appearance, it is very likely that you will encounter a situation where "it looks the same but cannot be used when installed in the car", such as the signal not being recognized by the vehicle or the subsequent anti-theft system matching not being completed, ultimately resulting in the key becoming a "decoration".

Second, after purchasing the key, it cannot be used directly. It must be decoded and matched by a professional locksmith with special equipment. The interior of a car key contains an encryption chip, which forms a "one-to-one" security verification mechanism with the vehicle's anti-theft system. Even if the mechanical tooth shape of the key matches the lock core, the vehicle cannot be started if electronic decoding and data synchronization are not completed. Professional locksmiths will connect the vehicle's OBD interface through dedicated diagnostic equipment, read the data of the vehicle's anti-theft system, and then enter the code and FCC information of the new key into the system to complete signal matching and anti-theft verification. The entire process must strictly follow the technical specifications of the vehicle manufacturer. Non-professional operation not only makes it difficult to successfully match but may also trigger the vehicle's anti-theft lock. Increase additional maintenance costs.