How do you lock the gas cap on a S type Jaguar?

To lock the gas cap on a Jaguar S-Type, first ensure that the cap is securely tightened by turning it clockwise until it clicks. If your model has a locking fuel door, you may need to use the car key or remote to lock the fuel door itself, ensuring it remains closed and secure. Always check that the gas cap is properly seated to prevent any fuel leaks or warning lights.