2007 gas gauge problem: not moving to full?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by AKCMommy, May 20, 2009.

  1. AKCMommy

    AKCMommy New Member

    Joined:
    Aug 5, 2007
    45
    2
    0
    Location:
    Rose City, Oregon
    Vehicle:
    2010 Prius
    Model:
    IV
    I usually wait until I have only half a tank before filling up. however, with the upcoming holiday weekend, I filled up while having 3/4 of a tank (I was 3 bars away from full). I put 2.5 gallons in and the gas gauge did not move up to full. In fact, it hasn't moved at all.

    I have never had trouble with my gas gauge before. Everytime i fill up, it moves from where it was to full. Also, the mileage counter changes from whatever hundred miles I have back to zero. It didn't do that either.

    I live in OR, so I didn't pump my own gas so the possiblity exists that I got stiffed at the gas station.

    The dealer I normall take my car in to told me that the fuel gauge does not reset unless I put a minimum of 4 gallons in. Is that true? I called 4 other dealers in my area and they all wanted me to bring my car in for service.

    HELP!
     
  2. Politburo

    Politburo Active Member

    Joined:
    Feb 15, 2009
    971
    207
    0
    Vehicle:
    2009 Prius
    I believe your dealer is correct.
     
  3. firepa63

    firepa63 Former Prius Owner

    Joined:
    Jul 23, 2005
    1,761
    203
    0
    Vehicle:
    Other Hybrid
    Model:
    N/A
    I don't think you have to put as much as 4 gallons in. However, it is more than 2.5 gallons. It's in your Owner's Manual. Just drive until you get down to 2 pips and fuel again. The 'guess' gauge will correct itself with that fueling.
     
  4. 2009Prius

    2009Prius A Wimpy DIYer

    Joined:
    Mar 25, 2009
    2,704
    486
    63
    Location:
    USA
    Vehicle:
    2009 Prius
    Wow! You picked the only one honest dealer out of five. What was the trick?
     
    1 person likes this.
  5. JimN

    JimN Let the games begin!

    Joined:
    Nov 26, 2006
    7,028
    1,113
    0
    Location:
    South Jersey
    Vehicle:
    2010 Prius
    Model:
    V
    2.5 gallons isn't enough to initially reset the 'guess gauge". It will probably read full after several starts.
     
  6. fed123

    fed123 Member

    Joined:
    Oct 24, 2007
    115
    7
    0
    Location:
    New Jersey
    Vehicle:
    2021 Prius Prime
    Model:
    Plug-in Base
    I just had the same problem for the first time with my 2007 Touring. Was down to four pips, went to the station and filled with over 4 gallons. The pips didn't move. I drove around the block and back to the station. The attendant, who has filled my car hundreds of times, assured me that he put gas in the car. He tried to put more gas in but couldn't as the pump shut off. (Luckily it didn't overflow.)

    The pips still haven't moved. It sucks to fill your tank and not even have the pleasure of knowing that you did it. Will check it out in the morning to see if the gas registered.
     
  7. EZW1

    EZW1 Active Member

    Joined:
    Aug 20, 2008
    719
    79
    7
    Location:
    Phoenix, AZ
    Vehicle:
    2016 Prius v wagon
    Model:
    Four Touring
    If your tank is full and the gauge is not showing full, then you may need to have the inclinometer reset. You can do it yourself or have the dealer do it.
     
  8. fed123

    fed123 Member

    Joined:
    Oct 24, 2007
    115
    7
    0
    Location:
    New Jersey
    Vehicle:
    2021 Prius Prime
    Model:
    Plug-in Base
    Thanks EZW1. Does the manual or some other source explain this this?
     
  9. EZW1

    EZW1 Active Member

    Joined:
    Aug 20, 2008
    719
    79
    7
    Location:
    Phoenix, AZ
    Vehicle:
    2016 Prius v wagon
    Model:
    Four Touring
    I'm taking this directly from the Prius ME maintenance manual:


    Start with a full fuel tank (top off is best that way there's no guessing whether it's full). Then park the vehicle on a level surface and let sit for 5 minutes before you continue.

    For the purpose of correcting the calculation of the
    fuel level by the meter ECU, 2 inclination sensors that
    detect the vehicle's longitudinal and latitudinal
    inclinations are installed in the meter ECU. The fuel
    temperature sensor are installed in the fuel tank to
    detect the temperature in the fuel tank.
    • The fuel level is calculated by the meter ECU in
    accordance with the signals of the sender gauge
    located in the sub tank and the vehicle speed signal
    received from the brake ECU. At this time, corrections
    are made by the signals from the inclination sensor
    that detect the vehicle's longitudinal and latitudinal
    inclinations and the fuel temperature sensors that
    detects the temperature in the fuel tank. For the
    inclination sensor centered value setting, refer to the
    following procedure:

    Perform the following procedures to correct inclination of
    the meter and inclination sensors when installing /
    removing / replacing the meter or after replacing the
    inclination sensors or main base.

    (a) Setting procedure
    (1) Connect the connector and install the meter
    securely in the position shown in the illustration
    so that it is inclined at a 20 degree angle to the
    vehicle's vertical line A.
    (2) Park the vehicle on a level surface.
    (3) Turn the power switch ON (IG).
    (4) Set the odometer display into the "TRIP A"
    mode.
    (5) Turn the power switch OFF.
    (6) Press and hold the ODO/TRIP switch while
    pressing the power switch twice ON (IG). (Do
    not put your foot on the brake.)
    (7) Press the ODO/TRIP button (switch?) 3 times
    within 5 seconds and hold it at least 5 seconds
    until the Inclination Sensor Information is
    displayed on the odometer.
    (8) Release the ODO/TRIP switch.
    (9) Press and hold the ODO/TRIP switch for at
    least 5 seconds to update the centered value.
    The third digit will indicate the status. The value
    of "1" indicates a successful reset.
    HINT:
    • If "0", "2", or "3" is displayed, perform the
    procedure "Turn the power switch ON (IG)"
    again.
    • Once the reset is complete, the odometer
    will returns to normal.
    (10) Release the ODO/TRIP button. (Once the reset
    is complete, the odometer will returns to
    normal.)


    Hope this helps you.

     
  10. fed123

    fed123 Member

    Joined:
    Oct 24, 2007
    115
    7
    0
    Location:
    New Jersey
    Vehicle:
    2021 Prius Prime
    Model:
    Plug-in Base
    Thanks so much for taking the time to track this down for me.
     
  11. fed123

    fed123 Member

    Joined:
    Oct 24, 2007
    115
    7
    0
    Location:
    New Jersey
    Vehicle:
    2021 Prius Prime
    Model:
    Plug-in Base
    After driving about 40 miles this morning, the gauge finally caught up with the filling and went to 10 pips.
     
Loading...