How do you locate the spark plugs on Toyota Sienna?

To locate the spark plugs on a Toyota Sienna, first, open the hood and locate the engine cover, which may need to be removed for better access. The spark plugs are typically found on the top of the engine, connected to the ignition coils. Follow the ignition coil wires to the plugs, which are usually positioned in a row along the cylinder head. Refer to the vehicle’s manual for specific details on your model year, as the configuration may vary.