How to Lock a Car Door with a Key?

[LeVictoria]

Take out the mechanical key and insert it directly into the keyhole on the door. The serrations on the key alter the small pins inside the lock cylinder, aligning them parallel to the outer circumference of the cylinder. Turn the key to the right to unlock the door. If you need to install the mechanical key, firmly insert it into the smart key until the locking button returns to the locked position. Use the mechanical key to lock or unlock the car door. Smart locks are equipped with mechanical keys as required by national regulations, which mandate that all factory-issued smart locks must include a mechanical key.