How do you change a cambelt on a Renault scenic?

To change the cambelt on a Renault Scenic, begin by disconnecting the battery and removing any components obstructing access to the engine, such as the engine cover and belts. Align the timing marks on the crankshaft and camshaft pulleys to ensure proper timing. Remove the old cambelt by loosening the tensioner and then install the new belt, ensuring it's tight and correctly aligned with the timing marks. Finally, reassemble all components, double-check the timing, and reconnect the battery.