What to Do When the Mechanical Key Can't Unlock the Car Door?

1 Answers
DeRichard
07/30/25 3:21am
Vehicle keys typically have the mechanical teeth and the electronic circuit fixed together, usually in two forms: the first is the folding type, where the mechanical key cannot be fully removed, and the teeth part can be popped out by pressing a button on the key. The second is the detachable type, where the mechanical teeth can be completely removed by pressing a button on the key. The third type is the most common, where the mechanical teeth are directly visible. If the mechanical key fails to unlock the car door, for the first scenario, you need to confirm whether the vehicle and the key match. This can be checked using the license plate number and the vehicle identification number (VIN). The second scenario involves checking whether the mechanical key teeth are damaged or dirty. If there is any foreign matter, clean it. If the mechanical key teeth are damaged, you can use a spare key as an emergency solution. In the third scenario, if none of the keys work, you should inspect the keyhole on the car door for any foreign objects or abnormalities. The fourth scenario is when the car door lock is damaged. If you confirm that the key, the vehicle, and the keyhole are free of foreign objects, it is recommended to take the vehicle to a repair facility for further inspection to determine the cause of the issue.
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