How do you change spark plug in 2007 rav4?

To change the spark plugs in a 2007 RAV4, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover if necessary, then locate the spark plugs and disconnect the ignition coil connectors. Unscrew the coils and gently pull them out, then use a spark plug socket to unscrew and remove the old spark plugs. Install the new spark plugs by hand to avoid cross-threading, then reassemble the ignition coils and connectors before reconnecting the battery.