Dealer Customize Mode-How to adjust Fuel Economy Display

[mpnret]

Originally Posted by mcaurilio

All else being equal, if ethanol-laden fuel is only 90% as effective as good-old gasoline, a car will only travel 90% as far on ethanol gas as it would if it were using real gas. So although the volume of liquid passing through is the same, the difference in distance would result in the trip computer already factoring in the difference between ethanol and straight gas.

So, in other words, the manufacturer's excuses for why the comptuers are inaccurate are complete hogwash.

With ethanol, same volume of liquid resulting in less distance traveled would equal lower mpg on the display as compared to straight gas.
I don't see where the trip computer is factoring in any diffreence.

[mcaurilio]

Originally Posted by mpnret

With ethanol, same volume of liquid resulting in less distance traveled would equal lower mpg on the display as compared to straight gas.
I don't see where the trip computer is factoring in any diffreence.

I think we're on the same page. "Trip computer" may not have been the best choice of words. Although they are obviously related, I suppose the trip computer and the MPG display are slightly different things.

[wobage]

I tried the instructions to adjust my MPG for my 2011 Outback, and either I am messing up a step, or does not work for all vehicles ?? All that I got was my Trip Meter back to 0...... Can anyone help me figure out if I am messing up a step or what ?? Thx....

[chrisi]

Originally Posted by wobage

I tried the instructions to adjust my MPG for my 2011 Outback, and either I am messing up a step, or does not work for all vehicles ?? All that I got was my Trip Meter back to 0...... Can anyone help me figure out if I am messing up a step or what ?? Thx....

I had the same issue the first couple of times I tried. When you are going through the lights on/lights off stage, you need press the reset button quickly, don't hold it down at all. Once the LED menu readout between the tach/speedo shows up, you can then hold the button to change options. I found once I was done my mileage from the last time I reset was still there.

[ssrenity]

You only have 10 seconds to do the procedure that gets you to the change options. It is very likely to take several tries before you get in. I think it took me at least 3 tries.

[wobage]

After numerous attempts again, for some reason the electronic brain cooperated and I adjusted my F/E MPG down by -4. Will be a while before I drive enough to fill up again and see if it is closer to reality now, but I do appreciate the info and moral support in trying again. I still have no idea what I did different that it finally cooperated.... I also hope I did not change anything else....

[porschpow]

This is pretty clever...kind of like up up down down left rright left right b a b a sleect start for contra!!! Thanks for the info

[DBestman]

Fantastic information, thanks OP! I will definitely do this ASAP, as the indicator is about 8% optimistic on my car.

[countryboy9799]

Mine is off about 6% to high, got it adjusted. Thanks

[myethreesuns]

Originally Posted by countryboy9799

Mine is off about 6% to high, got it adjusted. Thanks

Same here, mine was off 5.9% so right in line with yours. Just adjusted it, so thanks for the tip from this link. Really like this site