To open a garage door manually from outside using a key, locate the keyhole on the garage door lock. Insert and turn the key to unlock the door. If the door is equipped with a manual release mechanism, use it to disconnect the door from the opener. Lift the door manually if necessary.

Unlocking a garage door with a key involves using the keyhole to access the lock. Once unlocked, use the manual release mechanism if available to disconnect the door from the opener. Lift the door manually if needed. Ensure that the lock and manual mechanisms are functioning properly for ease of access. Regular maintenance can prevent lock and release issues.