Hi,
Unfortunately there are a lot of Ford Edge's with this issue. More than likely you have an issue with one or both of the speed sensors on the transmission. The Turbine shaft speed sensor and the output speed sensor.
We need to check for codes and see what comes up but if I were you, I would take it to a dealer because I am sure they are aware of this issue and will get it repaired quickly. Also, they will be able to perform any updates that Ford has come up with in order to help prevent something like this in the future.
Let me know if you get the codes and we can go from there. If I am correct, here are the procedures on how to replace them in case you want to.
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Sunday, October 27th, 2019 AT 8:18 PM