ATTENTION: The Thunderbolt manual release should be installed in a location that is easily seen and accessible. The manual release should be disengaged before manually operating the internal factory door handle. Deadbolts are intended to protect contents and should not be engaged while the vehicle is occupied as a safety precaution. Read the full terms and conditions here. Thunderbolt® Locks is an Illinois Corporation not affiliated with or endorsed by any automaker, installer, or other company referenced on this website. Copyright © 2022 • Patents Pending • Reg. No. 6,670,084 Thunderbolt® Locks is a registered trademark with the United States of America Patent and Trademark Office.