15Limited
Well-Known Member
- Joined
- February 28, 2015
- Messages
- 249
- Reaction score
- 39
- City, State
- TN
- Year, Model & Trim Level
- 2018 Sport 4x4
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 works on my 2018 Explorer, but should work on other MY’s as long as you can access the ET display in your instrument cluster (see below).
First, some math is involved...take your hand calculated MPG and divide it by the displayed MPG.
I hand calculated 16.6 mpg, and my display showed 17.5...so, 16.6 divided by 17.5 = .949 (I rounded up)...you will need this 949 number (ignore the decimal point) in the next step.
Second, enter Engineering Test (ET) mode on your Explorer;
Press and hold the left “OK” button on your steering wheel, start your vehicle, continue holding the OK button until Engineering Test is displayed on left side of your instrument cluster...then release OK button.
Use the left up/down arrows to scroll thru the Engineer data until you see the “AFE bias: 1000” screen...use the left/right arrows to adjust the bias from 1000 to the number you calculated above...in my example I toggled the right arrow to decrease AFE Bias to 949.
Shut off your vehicle...this exits ET mode and saves your inputs.
The next time you startup your Explorer, look at the displayed MPG...you should be very close to your hand calculated numbers in a tank or two...or for most, almost immediately.
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 works on my 2018 Explorer, but should work on other MY’s as long as you can access the ET display in your instrument cluster (see below).
First, some math is involved...take your hand calculated MPG and divide it by the displayed MPG.
I hand calculated 16.6 mpg, and my display showed 17.5...so, 16.6 divided by 17.5 = .949 (I rounded up)...you will need this 949 number (ignore the decimal point) in the next step.
Second, enter Engineering Test (ET) mode on your Explorer;
Press and hold the left “OK” button on your steering wheel, start your vehicle, continue holding the OK button until Engineering Test is displayed on left side of your instrument cluster...then release OK button.
Use the left up/down arrows to scroll thru the Engineer data until you see the “AFE bias: 1000” screen...use the left/right arrows to adjust the bias from 1000 to the number you calculated above...in my example I toggled the right arrow to decrease AFE Bias to 949.
Shut off your vehicle...this exits ET mode and saves your inputs.
The next time you startup your Explorer, look at the displayed MPG...you should be very close to your hand calculated numbers in a tank or two...or for most, almost immediately.