2007 Toyota Avalon Owners Manual - Page 42

'06 AVALON_U (L/O 0508) 1. Push the release button and take out the mechanical key. 2. Using a flathead screwdriver or equivalent, open the transmitter case. 3. Remove the discharged transmitter battery by flathead screwdriver or equivalent. Insert the guide groove and lift as shown in the above illustration. NOTICE Do not modify the battery case. It may cause a trouble. 26