Why is my 2015 Ford Focus overheating?
Why is my 2015 Ford Focus overheating? While there are a variety of reasons your Ford Focus is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. How to troubleshoot overheating in a Ford Focus? Clip the test light to the negative battery terminal and probe the fan's electrical connector. One of the terminals in the connector should cause the test light to come on when it is touched with the probe indicating power is being supplied to the fan. Switch the test light to the positive battery...