New to Prius - Brakes, VSC, Check Engine, Master Warning all came on without warning

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Kashmir, May 10, 2020.

  1. Kashmir

    Kashmir New Member

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    Scottsdale, AZ
    Vehicle:
    2008 Prius
    Model:
    Base
    Hello all,

    I'm new to the Prius having purchased my car in January of this year. The car in question is a 2008 Base with 117,000 miles. The oil was changed when I purchased the car and I've only driven around 3,000 miles so it has not been changed since.

    This morning when I turned on my Prius the Brakes System ((!)), VSC, check engine, and master warning lights all came on at once! The only issue I've had was a dead 12V back in March which was promptly replaced. I moved the car to a different spot in the driveway, let it sit and hour, and tried again only to see the same warning lights.

    I have an appointment with my mechanic scheduled for next week. Otherwise I know nothing about Prius' and have no direction as to what's wrong with my car and what needs to be done to find out and make it roadworthy.

    Any help at all would be appreciated. Thank you!
     
  2. bisco

    bisco cookie crumbler

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    welcome!

    you may want to check the 12v again if you're not driving much.
    prius is a complicated car with many computer ecu's. you need tech stream code aand the service manual. is your mechanic a hybrid specialist?
     
  3. sam spade 2

    sam spade 2 Senior Member

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    Even if the shop tells you that you need some other costly repairs.......
    Be absolutely, positively sure that they check the 12 V battery first......twice.
    Even new batteries can go bad. Especially if the vehicle isn't driven much.
     
  4. Kashmir

    Kashmir New Member

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    2008 Prius
    Model:
    Base
    Hey guys, thank you all for the advise!

    I took the car to the shop and the battery tested just fine. However, when they tested the computer the screen lit up with error codes:

    P0A80 - Replace Hybrid Battery Pack
    P3013 - Battery Block 3 becomes weak
    P3000 - Battery Control System
    C1241 - Too Low of Too High Battery Volts
    C1242 - Open Circuit in Ignition 1/ Ignition 2 Cell
    C1259 - HV System Regenerative Fault
    C1310 - Fault in HV System / Fault in ACTV Brake Booster Solenoid
    C1378 - Capacitor Communication Circuit Malfunction
    C1532 - ECU Malfunction
    B1462 - Humidity Sensor Circuit Malfunction
    B1412 - Ambient Temperature Censor Circuit
    B1443 - Air outlet damper control servomotor Circuit
    C2122 - Transmitter ID2 Nor Received (Main)
    B1790 - Airbag Sensor assembly ECU Communication Circuit malfuntion
    B1650 - Occupant Classification System Fault
    B1660 - P Seat Airbag ACTV Indicator Fault

    To my eyes this seems very overwhelming and I have no idea what to do. My mechanic said he things most if not all of those problems would be solved by replacing the hybrid battery, but he is not able to do so. How do I find a reputable Prius mechanic in Phoenix, AZ? Is there a directory of trusted mechanics on Priuschat? Also, how much would this all cost? Any help whatsoever appreciated! Thank you!!
     
  5. sam spade 2

    sam spade 2 Senior Member

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    I know that this will sound strange but get the 12 V battery tested again.
    Including it's resting voltage while the car is OFF.
    Then the charging voltage while it is ON (ready).
    Places like Auto Zone will do that for free.

    One of the main 12 V battery cables could be loose too.
    The negative one often causes trouble.

    Hopefully someone here can recommend a good Toyota dealership in your area.
    A large dealership should be able to test the HV battery with an external test, independent from the car.
     
  6. Kashmir

    Kashmir New Member

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    Base
    Thank you for the advice! I'll make a new post looking for a mechanic in Phoenix
     
  7. bisco

    bisco cookie crumbler

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    google around, pretty sure we have an expert member out there
     
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