Does the 2009 Toyota Corolla have a timing belt or chain?

The 2009 Toyota Corolla uses a timing chain. This metal-linked part replaces the more traditional rubber timing belt. It's generally considered maintenance-free, but there are circumstances when it needs to be replaced. This is one of the most important parts of Your vehicle. When the vehicle is running, the chain spins and interacts with the camshaft and crankshaft sprockets. Much like a bicycle chain, it is essentially synC-HRonizing those sprockets. This action ensures that intake and exhaust valves open and close at the required time when the engine fires. If these components are not in sync, expensive damage can be done to the vehicle. If You hear rattling in the engine compartments, this is usually a symptom that means the chain needs attention. Friction rubs pieces off the chain and those fragments can land in the oil drain pan and bounce around. If You hear rattling, have the chain checked to prevent future engine damage.