1999 Lexus RX 300 User Guide 1 - Page 286

ELECTRICAL COMPONENTS 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. (a) Checking by the fluid level lines (Maintenance type battery only) 64E008 Checking battery fluid There are 2 types of batteries: maintenance type and non-maintenance type. A non-maintenance battery has "MAINTENANCE FREE BATTERY" on its top. A maintenance type battery does not have such indication. Maintenance type battery Check the fluid condition by the fluid level lines on the side of the battery. Or if the battery has a hydrometer on its top, you can also check the hydrometer. Non-maintenance battery Check the battery condition by the hydrometer on the top of the battery. " 1 Upper line 2 Lower line The fluid (electrolyte) level must be between the upper and lower lines. When checking the fluid level, look at all six cells, not just one or two. If the level is lower than the lower line, add distilled water. (See "Adding distilled water" on page 273.) 271