740
4-3. Do-it-yourself maintenance
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions:
■ When working on the engine compartment
● RX450h: Make sure that the indicator on the “POWER” switch and the
“READY” indicator are both off.
● Keep hands, clothing and tools away from the moving fans and engine drive belt.
● RX350: Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● RX450h: Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids may also
be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
● RX350: Do not smoke, cause sparks or expose an open flame to fuel or the 12-
volt battery. Fuel and 12-volt battery fumes are flammable.
● RX450h: Do not smoke, cause sparks or expose an open flame to fuel. Fuel
fumes are flammable.
● RX350: Be extremely cautious when working on the 12-volt battery. It contains
poisonous and corrosive sulfuric acid.
Items Parts and tools
Washer fluid (P. 764)
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water
or washer fluid)
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