How many kilometers should the timing belt of Hyundai Sonata be replaced?

[JadeLee]

The timing belt of the Sonata should be replaced approximately every 80,000 kilometers. The main function of the engine timing belt is to drive the engine's valve train, ensuring that the intake and exhaust valves open and close at the appropriate times to allow the engine cylinders to properly intake and exhaust air. Below are the steps for replacing the timing belt: 1. Remove the valve cover, detach the crankshaft pulley, and take off the timing chain cover; rotate the crankshaft to bring the first cylinder to top dead center, then tighten the crankshaft fixing bolt to secure the crankshaft. 2. Rotate the intake and exhaust camshafts; there are grooves at the rear of the camshafts—align the grooves of both camshafts evenly, insert the specialized tool, remove the old chain, and install the new chain.