If the car key chip is broken, the vehicle cannot be started, and a new key chip or a new key is needed to start the vehicle. Because the anti-theft system of the vehicle is mainly the chip that identifies the car key, if the chip is damaged, it will naturally not be identified, and the vehicle will not be able to start.
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If the owner has entered the car, you can take out the mechanical key in the smart key, and then use the mechanical key to start the vehicle, if the smart key does not have the internal mechanical key, the owner can only go to the 4S shop or the repair department, re-match a key, or go back to the home to get another spare key.