When am i going to change 12v Battery and transmission oil type

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Manura, Dec 5, 2016.

  1. Manura

    Manura Junior Member

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    1. I bought Toyota Aqua in 2014, but its manufacture month is 2013 march. When should i change my 12v battery. Currently my mileage is 60,000 km. So far my car does not have symptoms except prolonged brake whirring sound and slightly less fuel efficiency compared to early days.

    2. Is the regular toyota genuine gear oil used for other CVT vehicles (e.g. Vitz or Yaris) ok for Prius C (Aqua). Do i need to change transmission oil after 60,000km.

    Thanks in advance
     
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    1) anytime it causes you trouble. All car batteries are good for 4 years unless abused, some will last twice that.

    2) ATF WS I would.
     
  3. Manura

    Manura Junior Member

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    JimboPalmer, Thanks for reply

    Can transmission fluids used in other toyota cvt systems used in Prius C.
     
  4. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    I have no idea if other CVTs use ATF WS, I don't own them. The Prius uses ATF WS.
     
  5. Mendel Leisk

    Mendel Leisk Sand Pounder

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    1. If the battery's giving you no problems I wouldn't be too concerned yet. You can get rudimentary check by measuring it's voltage when the car's at rest. 12.5 volts or higher, it's in good shape. 12.2~12.4 indicates borderline, dying. Lower: immediate intervention needed, charging and/or replacement. Still better though, is to get it's voltage AND Cranking Amps tested: there are electronic testers to do this now. Battery retailers should have them.

    The brake "prolonged whirring sound", if this is just when you've opened driver's door: it's normal, the system pressurizing.

    2. Don't mess around with alternate fluids. Toyota is very clear: use Toyota Genuine ATF WS. You don't want to experiment with this, the transaxle is expensive. Toyota says nothing about changing the fluid, but it's good to change it, and sooner than later. The first change is more critical. Once that's done you could probably leave it for life.

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    #5 Mendel Leisk, Dec 5, 2016
    Last edited: Dec 5, 2016
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  6. Manura

    Manura Junior Member

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    Mendel Leifsk
    Thanks for detailed explanation. I checked my battery and it says 12.45v state of charge 85%. The leaflet given by the tech says
    State of health - PASS
    Rated value - 280CCA
    Measured value - 279CCA
    Then a progress bar saying 98%.
    Can I go another year with this battery. Anyway thanks for the time and explanation, you guys are awesome.

    Also got the point Toyota genuine ATF WS I will ask from the service centre they have it.
     
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  7. Mendel Leisk

    Mendel Leisk Sand Pounder

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    The battery looks "ok", but maybe start looking, have some sources ready.
     
  8. AQUA-K

    AQUA-K Junior Member

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    Best if you could get the ATF from a Toyota Lanka outlet, that way you can be sure its genuine.

    About the fuel efficiancy you can check the following:

    - Check tire pressure (33 front 30 or more in the rear)
    - Does the air filter need replacement
    - Are you using SAE 0W-20 engine oil or did you switch to something else

    12V battery in the Aqua is different from the typical battery you get in a petrol car, always replace it with a maintenance free battery as it is inside the car. I don't think AGM batteries similar to the original battery are available locally.
     
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