Thank you for your interest in the product. The key ring attachment has been repaired. Consumables such as batteries are to be covered by the buyer. While we have checked things like button feel and lamp illumination, we cannot guarantee complete functionality. We cannot respond to questions or complaints regarding the reset procedure. The vehicle name in the title may differ from the actual vehicle. We cannot accept complaints such as "It didn't work with the listed vehicle model." Please confirm before purchasing. Used items are sold as-is, with no returns or refunds. Due to being a used item, perfect operation cannot be guaranteed. If we have the same type or model in stock, we may be able to provide a replacement. Please inquire via message. If you are concerned about minor imperfections or seek perfect condition, please purchase a new item from a dealer. Please purchase with the above information in mind.