2009 Lexus GS 450h Owners Manual - Page 504

4-3. Do-it-yourself maintenance CAUTION n When the hybrid system is hot Do not remove the radiator and reservoir cap. The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing burns or other injuries. NOTICE n When adding the coolant Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label. n If you spill coolant Be sure to wash it off with water to prevent it from damaging parts or paint. Radiator and condenser Check the radiator and condenser and clear any foreign objects. If either of the above parts are extremely dirty or you are not sure of their condition, have your vehicle checked by your Lexus dealer. CAUTION n When the hybrid system is hot 4 Maintenance and care Do not touch the radiator or condenser, as they may be hot and you may be burned. 445 GS_HV_U (OM30B44U) March 8, 2010 10:03 am