To replace or repair the components of a fuel pump/Fuel Level Sensor, start by removing the Fuel Level Sensor from the fuel tank and draining residual gasoline. For models up to 2007 (excluding 2007 RX 350), carefully pry off the end cap and remove the rubber insulator, fuel pump inlet strainer, fuel pressure regulator, fuel return jet tube assembly, and fuel pump from the fuel filter assembly. Then, separate the fuel filter housing and detach the Fuel Level Sensor from the upper part of the pump assembly. For installation, reverse the disassembly process. For 2007 RX 350 and models from 2008 onwards, the components are modular. Disconnect the fuel sender electrical connector to remove the Fuel Level Sensor, and disconnect the fuel pump electrical connector to remove the fuel pump. Additionally, remove and inspect the strainer for contamination. For 2GR-FKS models, remove the fuel pump module and the hairpin clip from the module body, and then pull the main valve from the module body. Replace the O-ring on the main valve, lubricate it with clean fuel, and press it into its original bore. Reinstall the hairpin clip and complete the remaining assembly in reverse order.