To find it:
1. Open the hood: Locate the hood release lever (usually inside the car, near the steering wheel or under the dashboard).
2. Look at the radiator: The radiator is a large, rectangular metal unit at the front of the engine compartment. It will have hoses connected to it.
3. Identify the cap: The radiator cap is usually black plastic or metal and will have a noticeable top for opening it. It may have markings indicating pressure or warnings.
If you're having trouble finding it, a quick online search for "2001 Ford Focus radiator cap location" along with images should help visualize it. Be careful when checking it, as the system will be under pressure when hot. Only check it when the engine is cold.