Can Smart Car Keys Be Duplicated?

2 Answers
Freya
07/24/25 8:45am
Yes, authorized 4S dealerships can duplicate smart car keys. The process involves the vehicle owner providing their driver's license and ID card, allowing the dealership to retrieve the anti-theft key code from the manufacturer's database. Subsequently, the owner must supply the key blade cut number to create a new metal key. Here are relevant details: "Code" matching required: Car keys employ higher security than residential keys. To program a new remote key, the 4S shop must synchronize the new key's code with the vehicle's onboard system. Post-programming: The new key becomes operational while any lost keys are automatically deactivated. Even if someone finds the old key, they could only mechanically unlock the doors but couldn't start the engine. Consequently, the security level of this "code" significantly influences pricing.
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VonMorgan
08/11/25 4:18am
A few days ago, my car key got chewed up by the dog, so I specifically researched this matter. Smart keys can certainly be replaced, but it's much more complicated than traditional keys. Each smart key has a unique electronic code, which is essentially the car's security ID. The standard procedure is to take the car purchase invoice and ID card to the dealership, where technicians will use a computer to connect to the vehicle's OBD port and reprogram the new key. The old key's code will be immediately deactivated. While auto repair shops can also do it, there are higher risks—some might use devices to copy the old key's code, which could be problematic if someone with malicious intent replicates it. The price difference is significant too: dealerships usually charge around a thousand yuan, while repair shops can do it for three to four hundred, but it's advisable not to skimp on this cost since it involves vehicle security. After replacement, remember to check the unlocking range and remote sensitivity, and avoid testing in areas with strong signal interference.
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