Lexus LX 570 Owner's Manual page 556

Type B

Take out the mechanical key.
1
Remove the cover.
2
To prevent damage to the key, cover the
tip of the flathead screwdriver with a
tape.
Remove the depleted battery.
3
When removing the cover, if the battery
cannot be seen due to the electronic key
module attaching to the upper cover,
remove the electronic key module from
the cover so that the battery is visible as
shown in the illustration.
Insert a new battery with the "+" termi-
nal facing up.
LX570_450d_OM_OM60R63E_(GE)
6-3. Do-it-yourself maintenance
555
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