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How to diagnose a heater issue when heat does not work
Other troubleshooting steps included making sure the coolant was topped off, making sure both the feed and return line to the heater core were hot, listening for sounds under the dash area to indicate a stuck blend door actuator, verifying that heat wasn't being piped to another part of the cabin and verifying that the AC and air piped to the cabin at the same temperatures.
From Viewers to date, is said to work on 2012-2014 Ford Edge, and 2013 Lincoln MKX.
The error codes 24/25 are what I have found that indicate a blend door actuator issue, which is what I expected to get; however, running the diag test seems to have solved the issue.