Q: How do you disconnect and remove the air filter housing from a Lexus ES350, and how to reinstall it?A: Disconnect the air filter vent hose, canister purge line hose clamp, and the mass air flow and vacuum switching valve electrical connectors. Next, disconnect the throttle body inlet hose clamp and separate the air filter hose from the throttle body. Remove the air filter cover mounting fasteners or unsnap the retainer clips, and then take out the air filter cover and duct as an assembly. Extract the filter element. Remove the radiator support cover retaining push pins and the cover. On V6 models, mark and disconnect any vacuum lines and electrical connectors. Take out the fresh air inlet fasteners and pull the inlet out of the box. Remove the box mounting fasteners and lift the air filter assembly from the engine compartment. To reinstall, simply reverse the previous steps.