Ford Mondeo service warning light

For us to be able to assist you, it is absolutely necessary for you to include the make, model, year and mileage of your car

Anyway to turn off a check engine light on most cars the computer inside your car must be reset. Have the car checked by a shop to see what comes up. If the engine light comes on then there is a reason for that and something is wrong. You can have the light reset with an engine scanner but I suggest you take it in.