The method of replacing the first layer lock of the Land Cruiser armrest box is as follows:
1. First open the armrest box and use a screwdriver to remove the screws inside.
2. Next, take off the armrest box, use a wrench or pliers to remove the old lock, install the new lock to its original position, and tighten the screws with a screwdriver.
3. Finally, reinstall the armrest box back to ensure that the lock can be used normally.