2008 Toyota Sequoia Owners Manual - Page 481

4-3. Do-it-yourself maintenance n Checking battery condition Check the battery condition using the indicator color. Type A Blue: Good condition White: Charging is necessary. Have the vehicle inspected by your Toyota dealer. Red: Not working properly, have the battery checked by your Toyota dealer. Type B Green: Good condition Dark: Charging is necessary. Have the vehicle inspected by your Toyota dealer. Clear or light yellow: Not working properly, have the battery checked by your Toyota dealer. n Before recharging When recharging, the battery produces hydrogen gas which is flammable and explosive. Therefore, before recharging: l If recharging with the battery installed on the vehicle, be sure to disconnect the ground cable. l Make sure the power switch on the charger is off when connecting and disconnecting the charger cables to the battery. 450