Remove the cable from the negative terminal of the battery and evacuate the cooling system, before disconnecting the upper hose of the
Radiator. In most 2015 and earlier models, the cooling fan removal procedure according to the manufacturer requires the removal of the radiator and fan assembly while it is possible to remove the engine cooling fans with the radiator untouched. Removing the parts needed for modification, depends on the model of the car, now for Lexus RX330 models remove the air intake duct, the plastic cover over the radiator support and the hood release latch. Twelve screws are used to fasten the radiator support to the car's frame and you should therefore unscrew the six bolts that hold the support in place above the radiator before you can easily pull of the support. Deroute the electrical connectors for the main as well as auxiliary fan motors, the fan electronic control unit turn off as well as any other tie harness connector connected to the fan shroud. First, undo the fasteners which join the fan/shroud with the radiator, then, release any hoses or wiring harnesses attached thereto and then pull the assembly out of the car. For all 2GR-FKS models built for 2016 and later and Lexus RX350 models, the radiator and fan shroud can be removed as a single unit. For Highlander models, the following components to be detached comprises of; radiator grille, air filter housing air inlet clips, and the inlet from the radiator support. Take out the battery then release the hood latch assembly, next, unbolt the upper hose for the radiator and the reservoir tank hose. Remove the cooling fan ECU ground cable and disconnect the electrical connector, and remove the wiring harness clip from the shroud. Three cooling fan retaining claws with engage the fan shroud to the radiator, release those claws and lifting the fan shroud assembly upwards, you have to pay attention to the locating of the three lower retaining tabs and slot position. When fastening the cooling fan shroud, the three lower tabs should be placed in the three low retaining slots provided at the base of the radiator. Take strong grips on the blades and take off its nut, the next process is to loose the fan motor from the shroud. When removing it, care has to be taken and the radiator support mounting bolts have to tightened to the right torque asDetailsService has to check the cooling system and fill it later.