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 Post subject: Re: Only charges up to 56 miles
PostPosted: Mon Jul 30, 2018 4:12 pm 
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Joined: Mon Jun 03, 2013 6:43 am
Posts: 273
Location: Redwood City, CA
9volt wrote:
I guess for me it's more of a psychological factor, in that, I would prefer to see the "actual" mileage available.


As you have learned, the numerical estimate of remaining range (AKA "Guess-O-Meter") is a relative value that is not particularly accurate. The bar graph to the left of it (showing max of 16 bars) is an absolute measure of the traction battery state of charge and is a fairly accurate measure of the remaining charge. I get about 6-7 miles of range per bar depending on various factors; YMMV :)

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 Post subject: Re: Only charges up to 56 miles
PostPosted: Tue Jul 31, 2018 3:35 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 565
Actually I am consistently amazed how accurate the GOM actually is.
Not perfect but how could it know future driving habits and conditions?
GOM works very well for me.


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 Post subject: Re: Only charges up to 56 miles
PostPosted: Tue Jul 31, 2018 6:59 pm 
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Joined: Wed Aug 13, 2014 8:30 pm
Posts: 245
Location: San Diego Co
smkettner wrote:
Actually I am consistently amazed how accurate the GOM actually is.
Not perfect but how could it know future driving habits and conditions?
GOM works very well for me.


Same here, as long as daily driving habits are similar the GOM creates a very good estimate, especially if you use a significant amount of battery capacity between charges (say 30% or more). I know if I charge after short trips or if I change from daily commute to long distance trip the range forecast may be grossly inaccurate.

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 Post subject: Re: Only charges up to 56 miles
PostPosted: Wed Aug 01, 2018 5:12 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3952
Location: San Diego
It’s a bit sad for me that after all these years with the 2012-2014 Toyota RAV4 EV, that there’s still so much unknown about the GOM.

The following will reset your GOM:

Rav4 EV Rated Range - Battery Degradation - "Tony-Test"

Here’s a link to “Rav4rangeChartV90.2.pdf” in my Dropbox:
https://www.dropbox.com/s/zp98r8qghlxm8 ... 2.pdf?dl=0

viewtopic.php?p=20518#p20518


RAV4 EV battery default "Rated Range" and then factor degradation using GOM:

Make sure that the battery is at room temperature, then:

1) Fully charge vehicle "extended" with the J1772 port (not CHAdeMO)

2) Battery must be near room temperature

3) Turn off cabin climate control with "OFF" button, however it will automatically go to OFF with battery disconnect

4) Disconnect the 12 volt battery negative cables (all three black cables) and leave off for several hours minimum (overnight is ideal)

Next day:

5) Reconnect 12 volt battery

6) When you open the driver's door with the key fob, the stored energy gauge will show Full (16 illuminated segments) and "LO" will display on the GOM

7) Hold foot on brake and press START button with key fob nearby

8) Wait for navigation unit to complete its start up (about 20 seconds)

9) Press START with brake pedal depressed a second time. You will hear a clunk of the main battery contactors and the dash should indicate "READY".

10) The displayed range is "RATED RANGE" at 3.5 miles per kWh

11) Divide this Rated Range by 146 to get usable battery capacity compared to new.

Example: 142 rated range / 146 = 97.2% battery capacity from new

********

Additional test:

If you drive the RAV4 EV at my standard test speed of 100km / 62mph ground speed, it will go almost EXACTLY the rated range.

TEST DRIVING PROTOCOL - dry, hard surface level road with no wind or cabin climate control with new condition battery at 70F, no elevation changes, "out-and-back" or loop course to compensate for any wind, 62mph / 100km/h GROUND speed as measured by GPS.

So, if the car is new, it will bang out 146 miles and the rated range will be 146 under the prescribed conditions.

If the rated range is 135, it will go 135 miles.

***************

What is lost and needs to be reset with a 12 volt disconnect:

viewtopic.php?p=20859#p20859

1) Stored radio / SiriusXM stations will remain, however your last station listened to will likely be gone

2) Cell phone pairings are not 100%, so I would check. i have had to delete my phone (and the car from my phone) and re-pair it

3) Map display mode

4) Volume of navigation voice notifications

5) Random play modes

6) Charge schedule will be retained, but it won't work without hitting the "SAVE" button on the previous screen

7) state selection from destination address page


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