Lexus 16041-20310 Radiator Assembly No.2

When working on RX 300/330/350, you start by undoing the negative battery cable and emptying out the cooling system. Take off the parts above the radiator (air intake ducts) and under (engine splash shields), plus any engine covers that are there. When doing repairs before 2003, take out the air conditioning condenser; after that year, remove the hood latch cover and hood latch. Also remove the radiator support cover, unhooking the horn wires and taking out the screws that hold the brackets and the cover. Take off the upper and lower radiator hoses, and the coolant reservoir hose from the top of the radiator. Take out the battery and front bumper for any car made after 2008. Open the radiator caps where the transaxle connects, and redirect the fluid with a pan underneath before blocking each connection with portable caps. If your car has a U880F transaxle, detach both transmission cooler tubes. Take off both sensors' Wave Radar and Smog Ventilation, then cut the wires that run to the engine cooling fans. Detach everything attached to the fan shroud and radiator. Start by removing the radiator's brackets. Pull out the radiator and fan shroud together, then remove the fans from the radiator. Check the radiator for any leaks, cracks, and blocked passages. Use air and a soft brush to clean it, being careful not to bend the fan blades while wearing eyewear. Taking the three pieces out goes the same way as putting them back - make sure all rubber mounts stay where they belong. Wash and check for coolant leaks before, during, and after engine operation. Ask the technician to mix antifreeze and water following instructions. Look at the cooler's fluid levels at medium and top heat as your engine heats up. To take out the coolant reservoir, you must pull it from the bracket on the fender well on most models. But on Lexus models made 2004 and later and Highlander models made 2007 and later, the reservoir sticks to the fan shroud and can't be removed. Drain the coolant into a container, look for damage in the reservoir, and throw it away if broken. Clean and reinstall the reservoir when all checked fine.