2002 Lexus GS 430 Owners Manual - Page 303

ELECTRICAL COMPONENTS Checking battery condition Checking by indicator BATTERY RECHARGING PRECAUTIONS During recharging, the battery is producing hydrogen gas. Therefore, before recharging: 1. If recharging with the battery installed on the vehicle, be sure to disconnect the ground cable. 2. Make sure the power switch on the recharger is off when connecting the charger cables to the battery and when disconnecting them. 64G003a Check the battery condition by the indicator color. 1 2 3 BLUE - Good condition. WHITE - Charging necessary. Have the battery checked by your Lexus dealer. RED - Have the battery checked by your Lexus dealer. CAUTION D Always charge the battery in an unconfined area. Do not charge the battery in a garage or closed room where there is not sufficient ventilation. D Only do a slow charge (5 A or less). Charging at a quicker rate is dangerous. The battery may explode causing personal injuries. NOTICE Do not refill the battery with water. NOTICE Never recharge the battery while the engine is running. Also, be sure all accessories are turned off. 286