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Gen III fuel filter

Discussion in 'Gen III 2010+ Prius Care, Maintenance and Troubles' started by Kevlaw, Jan 1, 2011.

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  1. Kevlaw

    Kevlaw New Member

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    I recently had a filter change and have lost over 8 miles per gallon. Left a fairly strong message with the service manager. will see if he returns the call next Monday.
  2. David Beale

    David Beale Senior Member

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    Re: Gen III fule filter

    Let me guess. You filled up just before the service. You reset the fuel mileage device. Be aware, the shop will have the car running without moving for a while, to check various things. This will drop the average mileage dramatically.
    There is no fuel filter on the Prius. They -may- have changed the cabin air filter (no effect on mileage), and presumably, you asked for and got an engine air filter change. This will also have no effect on mileage. Unless it was completely plugged, which is doubtful.

    Your average mileage drop was due to the car sitting idling at the dealership. Once you reset the meter your mileage should return to normal.
    1 person likes this.
  3. spiderman

    spiderman wretched

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    Re: Gen III fule filter



    Are you sure?

    Well even if there is none, that wouldn't keep the stealership from changing it and charging an arm and leg for. ;)
  4. xs650

    xs650 Senior Member

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    Re: Gen III fule filter



    There is a fuel filter, it is inside the fuel tank in the same sub assembly as the pump and gauge sender. I do believe you would be correct in saying the shop didn't change it.

    2010 TOYOTA PRIUS Fuel Filter



    That type of filter is intended to be a "lifetime"(*) fuel filter and is altogether too common on modern cars. They eventually need to be changed on a lot of high mileage cars and it's big job.

    Fortunately Toyota put an access panel under the rear seat to get at the top of the fuel tank so you can pull the pump/filter/level sender assembly out of the car without removing the fuel tank from the car. You might be able to get your fuel filter changed for about $110 for parts plus 2 hours labor, so about $300+ or so.


    (*) the filter is guaranteed to last the life of the filter.:D
  5. KK6PD

    KK6PD _ . _ . / _ _ . _

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    Re: Gen III fule filter

    Having done this myself, it's too bad there is no simple way to change a spelling error in a Thread Title!!
  6. xs650

    xs650 Senior Member

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    You can change the title in your reply and if enough people follow suite it would work.
  7. jayman

    jayman Senior Member

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    Re: Gen III fule filter

    For the FJ, Underdog Racing Development offers a high performance fuel pump that relocates the fuel filter to the frame rail. This is a high performance fuel filter that takes under 2 mintues to change

    It's not a question of IF but WHEN you clog a fuel filter, and to have to remove an entire fuel pump assembly from a fuel tank is insane

    But all new gasoline powered vehicles now offer such a "lifetime" filter
  8. Paradox

    Paradox Prius Enthusiast / Moderator Staff Member

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    Or just have a mod do it ;-)
  9. xs650

    xs650 Senior Member

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    Re: Gen III fule filter



    Well, they do last the lifetime of the filter.:D

    Fortunately there don't seem to be a rash of filters needing to be replaced on Prii so it's not a problem for the vast majority of original owners. I still don't like them
  10. El Dobro

    El Dobro A Member

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    Good thing I did a search, I was going to ask about the fuel filter and pump access. It's not too bad doing a change from the top. It sure beats dropping the tank.
  11. cwerdna

    cwerdna Senior Member

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    And the OP has never posted a reply/followup. I wouldn't be surprised if the the fuel filter was a red herring and there was something else going on/changed.
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