●Ensure that the positive and negative terminals of battery of key are installed correctly. ●Don't use wet hand to replace the battery of the remote key, water can lead to battery rust. ●Avoid touching and moving other parts in the key, otherwise it may affect the function of the key. careful not to bend electrodes inside the battery when loading key battery. The battery box shall not have dirt or oil. Note Replacement method of remote key battery 3. Open the battery cover. 1. Take out the Mechanical key . 2. Pry up the rear cover of smart key; 74