Lexus ES-300 2001 Manual page 471

ELECTRICAL COMPONENTS
Checking battery fluid
Checking by hydrometer
64E075
Check the battery condition by the hydrometer
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.
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