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Engineering Test Mode

JediMindTrix

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Anyone figure out a consistent way to enable and disable the ET mode yet?

S650 Mustang Engineering Test Mode IMG_2436
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infinitemberstang

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It has come up by itself randomly a couple of times..
 

roket

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engineering test mode can be entered by pressing and holding the "OK" button while starting the vehicle, and holding it until you see a little "ET" icon appear in the bottom-right corner of the dash
 

DCS

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engineering test mode can be entered by pressing and holding the "OK" button while starting the vehicle, and holding it until you see a little "ET" icon appear in the bottom-right corner of the dash
Is there any documentation on what you can do in this mode?
 


roket

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Is there any documentation on what you can do in this mode?
you can see various things, including testing all the dash lights, seeing current DTCs, changing the DTE estimate bias
 

Bbeckers24

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This is the process I use to get in ET mode. Get in car. Turn on car. Turn off car, open and close door. Wait for everything to turn off. For me last item is the dome light. Press and hold OK. Press ignition button 5 times and continue holding OK until ET is displayed at bottom right and release OK.

FYI, my mpg display was consistently around 2 mpg more than the calculated mpg. I used ET mode to adjust the AFE value from the default 1000 to 950, and my display mpg now consistently matches my calculated mpg or is within 0.2 mpg.
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