Electronic key battery Replace the battery with a new one if it is depleted.As the key may be damaged if the following procedure is not performed properly, it is recommended that key battery replacement be performed by your Toyota dealer. Note: If the electronic key battery is depleted The following symptoms may occur: The smart key system and wireless remote control will not function properly. The operational range will be reduced. Items to prepare Flathead screwdriver Lithium battery CR2032 Note: Use a CR2032 lithium battery Batteries can be purchased at your Toyota dealer, local electrical appliance shops or camera stores. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to local laws. Replacing the battery Release the lock and remove the mechanical key. Remove the key cover. To prevent damage to the key, cover the tip of the flathead screwdriver with a rag. Remove the depleted battery using a small flathead screwdriver. When removing the cover, the electronic key module may stick to the cover and the battery may not be visible. In this case, remove the electronic key module in order to remove the battery. Insert a new battery with the “+” terminal facing up. When installing the key cover and mechanical key, install by conducting step 2 and step 1 with the directions reversed. Operate the or switch and check that the doors can be locked/unlocked. Warning: Child safety Removed electronic key battery precautions Removed battery and other parts These parts are small and if swallowed by a child, they can cause choking. Keep away from children. Failure to do so could result in death or serious injury. Notice: When replacing the battery Use a flathead screwdriver of appropriate size. Applying excessive force may deform or damage the cover. For normal operation after replacing the battery Observe the following precautions to prevent accidents: Always work with dry hands.Moisture may cause the battery to rust. Do not touch or move any other component inside the remote control. Do not bend either of the battery terminals.