ScanGauge2 SOC Gauge

<div class='quotetop'>QUOTE(Rest @ Nov 11 2007, 12:04 AM) [snapback]537919[/snapback]</div>

You can probably find details elsewhere, but the full range as displayed on the MFD really corresponds to something like 40-80% of the actual range of charge on the battery pack.

This is a very conservative move by Toyota, done in the interest of extending battery life; most premature NiMH failures are due to deep cycling and/or overcharing, either of which will damage most rechargable battery chemistries.

 

you can get SOC on ScanGauge II???? I didn't know that. I usually keep mine on RPM, fWT, GPH, and something else, i forget.

Is the SOC only with the software update?

 

Hi Rest,

tkil is exactly right. In order to maximize the life of the battery it is limited by the computer not to exceed 80% SOC, nor drop below 40% SOC. I have had my SGII about a month and so far have observed that mine also reads 68% when there are 7 green bars. I have never seen a higher reading yet. I did notice that when the battery gets down to 2 purple bars the ICE will start as soon as the SOC goes from 40% to 39.5%.

Has anyone seen a greater SOC reading on the SG?

 

Sorry, guess I misunderstood the point you were trying to get across. I guess I just never interpreted the display that way. One thing I did notice is that sometimes when the display shows no arrows, the SG shows an RPM value.

 

<div class='quotetop'>QUOTE(Rest @ Nov 12 2007, 02:18 PM) [snapback]538570[/snapback]</div>

The information it's displaying is not "incorrect": it simply shows the normal operating range of charge (that is, the charge that the computer will let itself use for accel or braking). It's only lying just as much as fuel guages typically lie (showing "E" when really there's 1-2 gallons in reserve).

Would it be useful to you if the SOC never varied by more than 2-3 bars? Because if it really showed the absolute SOC (vs the "available SOC" that it does show), you'd never see anything other than 4, 5, or 6 bars. That seems to me to be obviously less useful.

Perhaps you can consider the MFD battery display as "available battery". The SGII is showing "total battery", and that same value is what's used by the computer to do the right thing -- but one of the "right things" is to keep the charge in a middle zone so as to not damage the battery.

Anyway. Hope you can change your mind to appreciate the MFD showing you a simplified and more-applicable view, so that you can get back to enjoying your car.

<div class='quotetop'>QUOTE(Rest @ Nov 12 2007, 02:18 PM) [snapback]538570[/snapback]</div>

As for "what other information on it is also incorrect", I suspect that you'll have to let go of absolute accuracy in favor of simplicity on the MFD. That's why you got the SGII in the first place, right?

To find specific issues, reading these forums is a great start. A few that I already know about:

1. MFD MPG calculations are 3-4% optimistic on 2005, apparently better (+1% or so) on 2007-2008 models.

2. Due to bladder in North American versions, the gas guage is often referred to as the "guess gauge". There was even a service bulletin on the fuel fill tube for 2004 and early 2005 models.

3. Regardless of how strictly accurate the MFD display is, there are ways to use just the MFD to improve milage.

4. The SGII is more accurate (as well as typically more precise), and that provides even more ways to improve milage.

Anyway. Once more, I hope you can relax on this issue and enjoy the rest of the car. I have a long list of things I think Toyota did wrong (or at least sub-optimally) on my 2005 Prius, yet I still enjoy driving it immensely.

 

Just FYI...
Please refer to following chart derived from Wayne Brown's site...
http://privatenrg.com/#Full_SOC

Ken@Japan

 

2 questions (scangage II)

Just installed scangage ii and have 2 questions.
1. Where & How do you get the SOC gauge programed in?
2. What would you enter as tank size 11, 12 or 8 may be even 9?

Scangage came this last week.
2008 Seaside Pearl
Package #5
Miles 1,203

 

You can refer on page 3 of following XGAUGE manual.
http://www.scangauge.com/support/pdfs/XGAUGE.pdf

It's up to you.

Ken@Japan

 

Thanks a Bunch

Went to the site and found the information earlyer today, don't
know why I couldn't find it before, may be it was to obvious.

Thanks for you answers.........

2008 Seaside pearl
Package #5
2 months old.