How do you replace the radiator fan switch on a 2001 Camry?

To replace the radiator fan switch on a 2001 Camry, first ensure the engine is cool and disconnect the negative battery cable. Locate the radiator fan switch, typically found near the lower radiator hose or on the engine block. Remove the electrical connector and unscrew the old switch using the appropriate tool, then install the new switch, reconnect the electrical connector, and tighten it securely. Finally, reconnect the battery cable and check for proper operation.