Lexus ES300 Owner's Manual page 357

NOTICE
D Make sure the engine and all accessories are turned
off before performing maintenance.
D When checking the battery, remove the ground cable
first and reinstall it last.
D Be careful not to cause a short circuit with tools.
D Take care no solution gets into the battery when
washing it.
If the battery is disconnected or run down
The moon roof may not operate automatically and the jam
protection function will not function correctly after you
reconnect, replace or recharge the battery. In any of these
cases, you should normalize the moon roof. To normalize the
moon roof, see page 92.
ELECTRICAL COMPONENTS
Checking battery condition
Checking by indicator
Check the battery condition by the indicator color.
1 BLUE Good condition
2 WHITE Charging necessary. Have the battery checked
by your Lexus dealer.
3 RED Have the battery checked by your Lexus dealer.
NOTICE
Do not refill the battery with water.
343