Has anyone figured out how to reactivate the economy displays for the vehicles with the useless nav systems? When removing the it seems like the only alternative is Scangauge...

 

I would like to know that myself, I took out the factory NAV & replaced it with an Eclipse 5500.

I do have a Scanguage II which is very accurate for mpg, but I would like the option of using the dash display for mpg also.

~John

 

A dealer can hook up the green message center to display MPG, but the question is, will they, and what will it cost?

The ScanGuage is great for 95% of all driving conditions, and is fairly accurate for most things, most of the time.

It does not register MPG correctly if you do A LOT of EV driving, or do lots of Hypermiler techniques, such as lots of coasting. Then, the built-in is much more accurate. On a recent mountain ski trip, my ScanGauge under reported MPG by 20%. However it is pretty close to the factory one most of the time.

( and of course you get lots of "extras" besides MPG )

 

It must be the kind of driving I do, but every single time I checked actual mpg against the SG or the NAV, the SG was consistently MORE accurate than the NAV.

The NAV was always reading too high by around 2 mpg when the SG was dead on.

~John