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How To Disable PCS and DRCC?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by AbuS3ood, Sep 12, 2014.

  1. AbuS3ood

    AbuS3ood Member

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    Hi All,

    I recently purchased a package 5 2010 Prius with Advanced Technology Package, The radar sensor seems to be damaged, the MFD keeps showing PCS is currently unavailable with the PCS light and the radar cruise shows an error with warning lights when activated, I made sure that the radar millimeter sensor is damaged by replacing it with another one from a friend's Prius with the same AT Package, I also cleaned it and cleaned the emblem from both sides, and drove the car without the emblem at all(the other car PCS and DRCC worked perfectly with emblem removed!)

    The important question, how can I disable the whole PCS system? I just don't want it to keep showing the damn error on the MFD, that is very annoying, I have Techstream Lite with original cable, adequate knowledge and tools.

    Im thinking of unplugging the ECU but cannot find it :)

    OR, Anybody knows where to find a used sensor for a good price? cannot find any on eBay :'(

    Thanks in forward.
     
    #1 AbuS3ood, Sep 12, 2014
    Last edited: Sep 12, 2014
  2. peterjmc

    peterjmc Ping pong in Ding Dang...

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    There is a button for PCS under the dash. It's somewhere near the TPMS sensor button. Did you try seeing if the PCS system was turned off, which is causing the dash lights from being illuminated?

    When I purchased my car I picked it up with the PCS lights on the dash on. I couldn't use the radar cruise control. I looked in the manual and it indicated that there was a button under the dashboard. I pushed it and everything worked.
     
    #2 peterjmc, Sep 12, 2014
  3. AbuS3ood

    AbuS3ood Member

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    Yes already tried the button under the steering, its not the reason, the sensor is damaged for sure...
     
    #3 AbuS3ood, Sep 12, 2014
  4. AbuS3ood

    AbuS3ood Member

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    UPDATE:
    I found the two ECU responsible for PCS and DRCC and disconnected both, not PCS light appears, not warnings on the MFC, but I lost the cruize control, no problem till I find a used sensor for a good price, any suggestion about an online source for used parts?
     
    #4 AbuS3ood, Sep 14, 2014
  5. AbuS3ood

    AbuS3ood Member

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    Another update:
    The sensor seems to need calibration, did several tries to solve this, but still with no luck
     
    #5 AbuS3ood, Sep 16, 2014
  6. gimmenow

    gimmenow New Member

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    were you ever able to shut the pcs system off?
     
    #6 gimmenow, Sep 26, 2014
  7. Abdul sattar

    Abdul sattar New Member

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    Same problam with my car
     
    #7 Abdul sattar, Sep 28, 2014
  8. AbuS3ood

    AbuS3ood Member

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    Yes I was able to disable it, by unplugging two ECUs behind the glove box, this will disable cruise control as well
     
    #8 AbuS3ood, Oct 5, 2014
  9. ThomasSF

    ThomasSF Junior Member

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    Hey AbuS3ood.

    I have the same problem. Spare part is $1.5k, and I don't care enough about PCS. I am very interested in your solution, so I removed the glove box to find a barrage of ECUs. I am a bit terrified to just do trial and error, so I wonder whether you could help.

    Could you please describe which ECUs you unplugged, or suggest an easy way to find them?

    I would love to do the same.

    Thank you very much in advance!

    Thomas.
     
    #9 ThomasSF, Mar 9, 2015
  10. AbuS3ood

    AbuS3ood Member

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    actually I sold the car and forgot which ECU's are they, send a pic of the ECU's behind the glove box
     
    #10 AbuS3ood, Mar 10, 2015
  11. ThomasSF

    ThomasSF Junior Member

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    Thanks for getting back to me, even after having sold the car!
    So 2 days ago I said just **** it and started to arbitrarily pull out some ECUs. Not a good idea! Parking on a steep hill, the display eventually gave me a 'hand break error' and the car wouldn't no longer start. But after a few minutes, things were back to normal.

    So I just took a few pics. The first one is an overview, the remaining ones are detail shot. Hope you can remember them. Again, thanks a lot in advance for your help! Very much appreciated!

    Thomas


    IMG_20150311_102909.jpg
    IMG_20150311_102843.jpg
    IMG_20150311_102746.jpg
    IMG_20150311_102751.jpg
    IMG_20150311_102830.jpg
     
    #11 ThomasSF, Mar 11, 2015
    Last edited: Mar 11, 2015
  12. AbuS3ood

    AbuS3ood Member

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    unplug these two ECU's, this is what I remember, it will disable the normal cruise control as well.
    get back to me if I was incorrect.

    [​IMG]
     

    Attached Files:

    #12 AbuS3ood, Mar 12, 2015
  13. AbuS3ood

    AbuS3ood Member

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    get back to me if I was incorrect
     
    #13 AbuS3ood, Mar 12, 2015
  14. ThomasSF

    ThomasSF Junior Member

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    IT WORKS!

    Been driving around with the warning for 2 years now… can't believe to see that silly animation again. :-D

    Thanks again for your help. Now I just need to tackle the headlights warning that came up 2 weeks ago…. ;-)
     
    #14 ThomasSF, Mar 12, 2015
  15. BATSUKH1227

    BATSUKH1227 New Member

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    HI THOMAS. I HAVE SAME PROBLEM WITH YOU. WHICH ECU*S SHOULD I UNPLUG? PLEASE SHOW ME THESE IN FRAME ON PICTIRE!!!
     
    #15 BATSUKH1227, Apr 19, 2020
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