How to Replace Car Keys When All Are Lost?
2 Answers
Every vehicle comes with an anti-theft code configured by the manufacturer. The car owner only needs to provide the vehicle license and identification information to the 4S dealership, which can then retrieve the vehicle's anti-theft code based on the provided information to configure a new key. Below is a classification of car key chip types: 1. Fixed Code: The code remains unchanged, consisting of numbers and letters (the data does not change when starting the engine). 2. Rolling Code: Each button press generates a different electronic code, but the code only changes when you use the key to start the vehicle engine. For example: Even if the chip's encoding is completely copied, it is difficult to crack through duplicating the chip's memory because the chip password changes dynamically each time the engine is started. 3. Two-Way Dynamic Password: The latest chip and chip controller (two-way data encryption) use encrypted codes. They are equipped with internal program algorithms to decrypt each piece of encrypted information.
Last month, I dropped my car key into the river and was in a total panic. After some trial and error, I figured out a solution to share with you. The most reliable option is to go back to the 4S dealership or an authorized brand store to get an original key replacement. They’ll need your Vehicle Identification Number (VIN), registration certificate, and ID to verify ownership before reprogramming and matching a new key. However, this usually costs a few thousand yuan and takes two to three days. Many car keys now come with anti-theft chips, making DIY solutions impossible. That said, a professional locksmith on the street can also help—they use devices to connect to the car’s computer for decoding, which is cheaper, but make sure to choose a reputable shop and don’t forget to haggle. Also, check your vehicle warranty or insurance policy—if you have key replacement coverage, part of the cost might be reimbursed. It’s a good habit to keep a spare key in a fixed location, like a hidden drawer at the office. If you lose all your keys, it’s best to report the loss immediately and drive to the 4S shop to handle the anti-theft system to prevent car theft risks.
