How do you change spark plugs on a 2006 Toyota solara?

To change the spark plugs on a 2006 Toyota Solara, first, ensure the engine is cool and disconnect the battery. Remove the engine cover if applicable, then carefully disconnect the ignition coil connectors and unbolt the coils to access the spark plugs. Use a spark plug socket to remove the old plugs, inspect the gap on the new plugs, and install them with the correct torque specification. Reassemble everything by reversing the disassembly steps, reconnecting the coils and battery.