2009 Toyota FJ Cruiser Owners Manual - Page 344

4 -3 . Do-it -yourse lf m a int e na nc e Ke y bat t e r y Replace the battery with a new one if it is discharged. n You will need the following items: l Small Phillips-head screwdriver l Lithium battery CR1616 n Replacing the battery Remove the screw and cover. Push the cover in the arrow direction. Remove the module. Remove the 2 screws to take out the lid. Insert a new battery with the "+" terminal facing up. 318