2009 Toyota Sienna Owners Manual - Page 328
2009 Toyota Sienna Manual
Page 328 highlights
3-3. Using the rear audio system NOTICE n For normal operation after replacing the battery Observe the following precautions to prevent accidents. l Always work with dry hands. Moisture may cause the battery to rust. l Do not touch or move any other components inside the remote controller. l Do not bend either of the battery terminals. 302