Mike Delaney
Member
I just took my 2018 FX4 in for the same issue. There is a Service Bulletin 21B10 on the topic. I was told they cannot perform the fix right now as it will then cause issue with the transmission. The current fix they where using was an update to the computer system. Ford is working on the fix, and just came up with one for the F150. I was told it will not damage the engine, so i am in a wait and see when the fix happens.