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Check PCS system

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Zuinat, Oct 30, 2016.

  1. Zuinat

    Zuinat New Member

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    Hello,

    I have an error says " check pcs system. I took the car to dealers but it seems they are guessing as they tell different reasons. I found the brake oil lower than it was but not sure if it could be the reason.
    I had it scanned and here's the result:

    ABS/VSC/TRC = FAULT
    Advanced parking guidance system = FAULT

    Prius 2010
    I attached a screenshot
     

    Attached Files:

    #1 Zuinat, Oct 30, 2016
  2. bisco

    bisco cookie crumbler

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    welcome! did they say what the pcs system is?
     
    #2 bisco, Oct 30, 2016
  3. Raytheeagle

    Raytheeagle Senior Member

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    Sounds like the PreCollision System.

    How many miles? Have you got a code reader or know someone who does? Any work to the brakes recently?
     
    #3 Raytheeagle, Oct 30, 2016
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  4. Raytheeagle

    Raytheeagle Senior Member

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    Sounds like the PreCollision System.

    How many miles? Have you got a code reader or know someone who does? Any work to the brakes recently?
     
    #4 Raytheeagle, Oct 30, 2016
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  5. Robert Holt

    Robert Holt Senior Member

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    If it is the pre collision system, that would include the seatbelt pre-tensioners also, which might be another site for a bad electrical connection to occur.
    But the posted diagnostic codes in the computer would be helpful if you have a Techstream type of reader that will correctly interpret them.
     
    #5 Robert Holt, Oct 30, 2016
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  6. bisco

    bisco cookie crumbler

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    uh-oh, double posting again.:unsure:
     
    #6 bisco, Oct 30, 2016
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  7. Raytheeagle

    Raytheeagle Senior Member

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    Unfortunately:(. We've been having a good run though:whistle:.
     
    #7 Raytheeagle, Oct 30, 2016
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  8. bisco

    bisco cookie crumbler

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    it was a very nice few weeks...
     
    #8 bisco, Oct 30, 2016
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  9. Zuinat

    Zuinat New Member

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    #9 Zuinat, Oct 31, 2016
    Last edited: Oct 31, 2016
  10. bisco

    bisco cookie crumbler

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    the video didn't load. did you scan with a toyota specific scanner? also, you may want to try disconnecting the 12v negative for a few minutes, but you might want to scan codes first. the buzzing noise is probably the brake accumulator. has it gotten worse, or is it new altogether. mine buzzes when i open the drivers door, and now and then while driving.
     
    #10 bisco, Oct 31, 2016
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  11. Zuinat

    Zuinat New Member

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    The site doesn't support the vid. Here's a picture instead. this thing in the picture always keeps buzzing and vibrating and yes I scanned it
     

    Attached Files:

    #11 Zuinat, Nov 1, 2016
  12. bisco

    bisco cookie crumbler

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    if the buzzing has increased, it may be leaking.
     
    #12 bisco, Nov 1, 2016
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  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Is this a sound you hear when opening the driver's door, buzzing that goes on for about 10 seconds? If so, that is normal; it's the brake system pressurizing.
     
    #13 Mendel Leisk, Nov 1, 2016
  14. Zuinat

    Zuinat New Member

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    it's like the sound I hear when I open the door but it's constant and not sure if it comes from the ABS or something else. it comes from the thing indicated in the picture
     
    #14 Zuinat, Nov 1, 2016
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  15. Raytheeagle

    Raytheeagle Senior Member

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    Here in the states we had a recall for the brake booster. Did you get one in your neck of the woods?

    It sounds like the system is continually trying to pressurize but cannot. Sounds like blow by of the fluid or there might be air in the system.

    What is your brake pad thickness? Any work done recently on the brakes? Do you use a lot of regen braking or use the friction brakes? Have to use the brakes for an extended period of time where heat may have boiled the fluid, creating air in the system?
     
    #15 Raytheeagle, Nov 1, 2016
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  16. Bassir

    Bassir New Member

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    hello Zuinat,

    i have the same problem with my prius. Did you fix it ?
     
    #16 Bassir, Jan 20, 2021
  17. Matth Torrijos

    Matth Torrijos Active Member

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    Same problem for me IMG_0184.jpeg
     
    #17 Matth Torrijos, Nov 28, 2023
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