Owners Manual
Page 429
... there may be a leak in the cooling system. 408 Visually check the radiator, hoses, engine coolant filler cap, radiator cap and drain cock and water pump. ENGINE 62E006b " 1 Reservoir cap 2 Upper line 3 Lower line Look at the see-through coolant reservoir when the engine is between the "FULL"...protection of aluminum components. Always use ethylene-glycol type coolant for leaks in the system. If you can find no leak, have your Lexus dealer test the cap pressure and check for a proper corrosion protection of aluminum components. The coolant level in the next column. See ...
... there may be a leak in the cooling system. 408 Visually check the radiator, hoses, engine coolant filler cap, radiator cap and drain cock and water pump. ENGINE 62E006b " 1 Reservoir cap 2 Upper line 3 Lower line Look at the see-through coolant reservoir when the engine is between the "FULL"...protection of aluminum components. Always use ethylene-glycol type coolant for leaks in the system. If you can find no leak, have your Lexus dealer test the cap pressure and check for a proper corrosion protection of aluminum components. The coolant level in the next column. See ...