Engineering mode on 12" display

[MikeHTally]

For quite a while, you could engage Engineering Mode by pressing the Start button while holding "OK". Surely, I'll need to back down the "AFE" setting for MPG, or forever have to add X% when I fill up. How is that accomplished?

 

[Dale5403]

I don't know if it works but I found this Mike.

Hold the button while you start it and keep holding it. It’s the Engineering Test Mode.
On my F150 it was the only way to get to a Speedo that would read over 120. It read at least as high as 174 before I bailed one night. lol

 

[MikeHTally]

Hmmm. My Mustang, Escape, and the previous Explorer went into ET by just holding OK while pressing "Start". That didn't work on the ST. I'll try it again tonight.

 

[peterk9]

For quite a while, you could engage Engineering Mode by pressing the Start button while holding "OK". Surely, I'll need to back down the "AFE" setting for MPG, or forever have to add X% when I fill up. How is that accomplished?

Hi Mike. Here is the thread for the 5th gen. I don't know if the 6th gen is similar.

How to: - AFE Bias - How to correct your MPG readout/display

My search on this Forum provided no threads/results, so... Most of us have discovered the MPG displayed in our vehicle’s instrument cluster may be a few Miles Per Gallon off from our real-world hand calculated results...but you can make a simple change to correct this. The procedure below...

www.explorerforum.com

Peter

 

[MikeHTally]

I just tried it on the ST and sure enough, it wanted the motor running. I wonder why they changed it. I just tried the Mustang again. The motor did not need to be running to access ET. The Limited I just traded didn't either, nor did the '19 Escape. Two different 2020 Explorers - the only difference being the display type. I had that Limited down to an accuracy of 0.3 mpg or better. After a few tanks, maybe I can get the ST down to that. I turned its setting down to about 950.

Thanks all, for the input.

 

[Dale5403]

I just tried it on the ST and sure enough, it wanted the motor running. I wonder why they changed it. I just tried the Mustang again. The motor did not need to be running to access ET. The Limited I just traded didn't either, nor did the '19 Escape. Two different 2020 Explorers - the only difference being the display type. I had that Limited down to an accuracy of 0.3 mpg or better. After a few tanks, maybe I can get the ST down to that. I turned its setting down to about 950.

Thanks all, for the input.

I tried that this morning (Along with other methods) and it didn't work. Tried again after you posted this and it worked. Go figure.

 

[MikeHTally]

I tried that this morning (Along with other methods) and it didn't work. Tried again after you posted this and it worked. Go figure.

That's a bit unsettling.

 

[Dale5403]

That's a bit unsettling.

Maybe I fat fingered it. Wouldn't be the first time.