2008 Lexus RX 400h Owners Manual - Page 308

4-3. Do-it-yourself maintenance CAUTION The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized. To avoid death or serious injury: n When working on the engine compartment l Keep hands, clothing, and tools away from the moving fan and engine drive belt. l Be careful not to touch the engine, inverter, radiator, exhaust manifold, etc. right after driving as they may be hot. Oil and other fluids may also be hot. l Do not leave anything that may burn easily, such as paper or rags, in the engine compartment. l Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel and battery fumes are flammable. l Be extremely cautious when working on the battery. It contains poisonous and corrosive sulfuric acid. l Never touch, disassemble, remove or replace the high voltage parts, cables and their connectors. It can cause severe burns or electric shock that may result in death or serious injury. l When the hybrid system is operating with the READY light on, the engine may suddenly start in some cases. When you inspect the engine compartment, be sure to turn off the hybrid system. n When working near the electric cooling fan or radiator grille Be sure the engine switch is off. With the engine switch on, the electric cooling fan may automatically start to run if the air conditioning is on and/or the coolant temperature is high. (→P. 325) n Safety glasses Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in the eyes. NOTICE n If you remove the air cleaner: Driving with the air filter removed may cause excessive engine wear due to dirt in the air. Also a backfire could cause a fire in the engine compartment. 312