1. Attachments are working again! Check out this thread for more details and to report any other bugs.

CVT ATF level check

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Tony Lees, Nov 23, 2014.

  1. Tony Lees

    Tony Lees Junior Member

    Joined:
    May 17, 2013
    2
    0
    0
    Vehicle:
    2012 Prius c
    Model:
    Two
    My 2012 Prius C contains 3.5 qts of Auto Trans Fluid. I have been unable to find a dip stick to check the level. Does anyone know for sure how to check this level?
     
  2. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,703
    38,242
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    The official method is remove the tansaxle fill bolt and with the car level: feel with a finger, if it's level with the bottom of opening, or less than 10 mm lower *, it's good.

    In practice, if there's no leakage, I'd leave it alone.

    It's worthwhile to change, say every 30000 miles. The fluid to use is toyota ATF-WS.

    * that 10 mm number might vary, might be 5, might be 10.
     
  3. Tony Lees

    Tony Lees Junior Member

    Joined:
    May 17, 2013
    2
    0
    0
    Vehicle:
    2012 Prius c
    Model:
    Two
    Thanks Mendel. Guess it's not planned to be user friendly unless you have a lift, pit or real thin body.
     
  4. KYBlue

    KYBlue Active Member

    Joined:
    Jun 28, 2013
    227
    111
    0
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    If you have some ramps you can check it easily. I did the ATF fluid change at 30k with ramps and hand tools.

    Chris
     
    kevtan likes this.
  5. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,327
    859
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    . It's actually easy, but like everything , a project.
     
  6. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,703
    38,242
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Neglected to mention, the car should be level when you check. I've changed the fluid a couple of times, but never check the level in between changes: just too much hassle. If you're not seeing leakage it's fine.
     
  7. Matt H

    Matt H Active Member

    Joined:
    Nov 23, 2012
    164
    104
    0
    Location:
    Okinawa Japan
    Vehicle:
    2012 Aqua
    Model:
    N/A
    In short, if it's not leaking, where did it go? Answer: It didn't go anywhere.

    Engine oil can "disappear" because it gets burned in combustion, either by getting past the rings, or through the PCV system. If there are no leaks, there is no reason to check the transaxle oil, because it's all still in there ;-)