Fuel Gauge Calibration Instructions

[efusco]

Ok, couldn't wait, tried to do this about 6 different times and it's just not working.

I do the hold down the ODO button thing on going into IG ON mode, wait a second or two, then do the off-on 3 times and......nothing. sometimes the ODO goes to ODO B, or ODO, or even back to ODO A, but I hold and hold and nothing changes...I never see the 6 digits.

Anybody out there done this successfully that can tell me what I might be doing wrong.

BTW, I watched the CAN-View...started at 60% on start up and was down to 57% by the time I pulled out of my driveway (it isn't that long). Fuel guage showed 7 bars.

Tank % stayed at 57% the entire 13 mile drive to work, but the fuel guage dropped to 6 bars just as I arrived.

so much for any clear correlation there!

[rohlrogge]

Evan, I finally got around to trying it today and also had no luck. I guess I'll just continue to live dangerously in the 'single blinking bar' world and guess by mileage until one day I guess a little on the wrong side and run out of it!!

[IsrAmeriPrius]

I performed this procedure on my '05 a couple of weeks ago. It took a few tries, but ultimately I succeeded. The gauge is back to the approximate same degree of accuracy that I used to experience before the car spend a few weeks in the body shop where both batteries were removed prior to the car being placed in the heated paint spray booth.

I will repost Rick's instructions and bold the steps which may be be the key to a successful recalibration:

1. Park the vehicle so as it is level,front to back and side to side.
2. IgOn (not Ready mode) and make sure that "Trip A" is showing on the odo (this is where we made a mistake).
3. Power down.
4. Keep your foot off the brake.
5. Push in and hold down the Odo/Trip button.
6. Push the Power button twice to IgOn (not Ready mode).
7. Turn the Odo/Trip off then On 3 times in 5 seconds (I pressed it three times within five seconds).
8. Continue holding the Odo/Trip button until a 6 digit code appears.
9. Release, then push again the Odo/Trip button for another 5 seconds. The 6 digit code will change to a 5 digit code.
10. After the middle digit,of the 5 digit code,changes to "1" release the Odo/Trip button and the odometer will return to normal reading.[/b]

[ScubaX]

Originally posted by rohlrogge@Mar 26 2006, 09:06 AM
Evan, I finally got around to trying it today and also had no luck.  I guess I'll just continue to live dangerously in the 'single blinking bar' world and guess by mileage until one day I guess a little on the wrong side and run out of it!!

[snapback]230445[/snapback]

I don't recommed that at all. I also thought I had plenty of gas at the blinking bar because the most I got in during that blinking bar was 10 gallons. Well, after I ran out of gas I still only got 10.6 gallons in. The bladder staying compressed causes the problem. So minus the space taken by the bladder defect your really only have ~10 gallons. Once I fuled with a broken nozzle that I had to shut off after fuel spilled out onto the ground. From the blinking bar I got 11.67 gallons. I was so happy. Now I am back to 9 to 9.5 gallons at the blinking bar. I MIGHT have only .5 to 1 gallon left. That is just a guess. Your guess may vary.

[richard schumacher]

Originally posted by rohlrogge@Feb 3 2006, 06:19 AM
Just out of curiosity would this also make any sort of correction to the opposite condition where I get the blinking single bar and I still have 3 gallons of gas remaining in the tank?  According to my dealer he indicates that this is normal!!

[snapback]203086[/snapback]

It *is* normal, because you don't have three gallons remaining. You have less than one gallon. The tank almost never really holds the nominal amount of 11.9 gallons. If you ignore the flashing bar you will one day run out of gas. Don't say we didn't warn you :)

[rdenneyutmb]

Originally posted by richard schumacher@Mar 26 2006, 02:43 PM
It *is* normal, because you don't have three gallons remaining.  You have less than one gallon.  The tank almost never really holds the nominal amount of 11.9 gallons.  If you ignore the flashing bar you will one day run out of gas.  Don't say we didn't warn you

[snapback]230510[/snapback]

Still learning my new Prius, so I have a gasoline tank-related question. Has anyone run out of gasoline before the last pip starts blinking? So far in three tanks I have filled up a few miles after seeing 2 pips, and have put in 8.1, 8.6 and 8.8 gallons. Looks like going down to one is reasonably safe?

Thanks

[tripp]

Yeah, I'd say yer good there. I just filled up yesterday and put in 9.847 gal. That's the most I've ever put in. I went 442 mi on that tank. The MFD calculated 51 MPG and the manual calc came in just under 45 MPG. The temps have been all over the place and the last time I put gas in it was a lot colder. I don't really trust the fuel gauge at all but I think that on my car it's understating what's left in the tank. That, or my MFD calcs are way optimistic. Considering how variable the temps are here in CO I don't put much faith in the manual calculations. It seems impossible to get a consistent fillup between the bladder, the vapor stuff on the fuel tank, and the particular gas pump you're using. So I've mainly been tracking my fuel efficiency with the MFD. Does anyone know how accurate it is?

[AlphaTeam]

Ya, I'd like to know too.
On Greenhybrid.com it says I have 38.5, but I was closer to 40 on my lifetime accoring to the computer.

[chezypuffs]

What is 'Can-View'??

[efusco]

<div class='quotetop'>QUOTE(chezypuffs @ Mar 29 2006, 01:46 PM) [snapback]231787[/snapback]</div>

What is 'Can-View'??
[/b]

see http://www.hybridinterfaces.ca