How do you change heater on a Ford Transit Connect?

To change the heater on a Ford Transit Connect, first, ensure the vehicle is turned off and cool. Disconnect the battery, then remove the dashboard and any necessary panels to access the heater core. Drain the coolant, disconnect the heater hoses, and remove the old heater core. Install the new heater core by reversing the steps, ensuring all connections are secure before reassembling the dashboard and filling the coolant back up.