2007 Lexus RX 350 Owners Manual - Page 306

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, radiator, exhaust manifold, etc. right after driv- ing 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. n When working near the electric cooling fan or radiator grille Be sure the ignition is off. With the ignition on, the electric cooling fan may automatically start to run if the air conditioning is on and/or the coolant temperature is high. (→P. 297) 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. 286