Using this product is easy. Just install it in the designated place in your Subaru. It should fit right in as it's an OEM part. When it comes to using the coin box, simply open it and drop your coins inside. It's located in a convenient spot for you to reach. As for maintenance, keep it clean by wiping it with a soft, dry cloth every once in a while. Avoid using harsh chemicals or abrasive materials as they may damage the black finish. Also, be gentle when opening and closing the coin box to ensure its long - term functionality. If you have any issues, refer to the fuse diagram on the back of the coin box for quick reference.