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skid control ecu

Discussion in 'Gen II Prius Technical Discussion' started by n00bz, Jan 31, 2012.

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  1. n00bz

    n00bz New Member

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    I have 2004 prius, 100,400 miles. No problems ever and all of a sudden, driving as usual, vsc, brake, !, and alarm buzzer on the entire time car is running or door opens. Brake seems harder to stop now. Right rear wheel is grinding when brakes are applied. jerks a bit at slow stops. Went to dealer, gave me a repair order for a skid control ecu $1755.00 :( not in stock, need to order one, may take a week? addional referral charge of 180.00 :(:(
    Found used one online for $150 with warranty :)
    Should i purchase used? Do i need to reprogram it or is it a plug and play? Any advice is much appreciated.

    Also, dealer mentioned that i have a recall for the electric water pump, which i decide to put off until the brakes are fixed first.
    Daily driver, i'm driving sloooow right now.
  2. seilerts

    seilerts Battery Curmudgeon

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    Since you paid $180, ask for the diagnostic codes and freeze frame data and post it here. My question, why would it be the ECU, rather than the actuator? It is usually the actuator that goes bad. Further, the 12V battery must be ruled out. Did they test that? Is it original to the car?

    If you replace the ECU, it may need a zero point calibration, which requires Techstream.
    2 people like this.
  3. n00bz

    n00bz New Member

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    I had that gut feeling that the dealer was shady too. I didn't mention this but i did go to my mechanic first and he was able to print out the electronic brake control module technical service bullentin #BR001-07 for me during his testing with a snap on computer. He was the one that told me to go to the dealer and they should have this replaced because it was recalled. So i'm confused. The dealer told me the only recall was an electric water pump, but i put that off untill i get the brakes done first.
    btw, $180 was a fee to get the ecu on back order? I paid 115 for the diagnosis fee today.
    The battery is original and test ok during the maintenance mode.
    Dealer also tested battery and is good.
    anything else i can try myself?
  4. seilerts

    seilerts Battery Curmudgeon

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    BR001-07 was superseded by T-SB-0307-08. This is for brakes that "bark" -- when pumping the brake pedal at a stop, there is a sharp noise due to air in the actuator. Warranty coverage is 3/36, and you are probably out of any extended warranty coverage as well.

    What does your brake fluid look like? Canola oil, extra virgin olive oil, or greenish-tinged used motor oil?

    There's a good chance that your mechanic can read the codes and set the zero point with his Snap On scan tool, if he has the Toyota add-on. Go back to him and see if he thinks it is the actuator, and if he is willing to put a salvage actuator in there.

    I'm deeply suspicous of your 12V battery, being original and 8+/- years old. They seldom last that long. Check it again in maintenance mode in the morning and report back numbers i.e. 11.x in Acc, 10.x in Ig-On, etc.
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  5. V8Cobrakid

    V8Cobrakid Green Handyman

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    as seilerts mentioned, the 12v can be an issue. if you are still on the stock 12v, change it now. this could be caused by a bad 12v.

    as for the inverter water pump recall, it expires in 2013... so wait till yours dies. (pink fluid stops moving)

    is that buzzer a really loud buzzer from under the glove box? might also sound like it's behind you? if the brakes are hard and you're getting alarms when you open and close the door (car preps the brakes) then the car is using electric brakes (of sorts). if i recall correctly, there are multiple sets of brakes.. a main system with pump.. some sort of pump back up... and then electric pump ran by a bank of capacitors in the rear next to your 12v... if they get used, the car sounds that alarm. i've heard it twice and i wish to never hear it again.
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  6. n00bz

    n00bz New Member

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    I will check the oil, and have the battery replaced in the morning. As for the DTC, I have no paperwork from the dealer indicating any trouble codes. It shows on the invoice, performed diagnosis. needs ecm to start, and the repair order for the ecu part number 89540-47060.

    For the battery, which do you recommend?
  7. seilerts

    seilerts Battery Curmudgeon

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    For the battery, you have Toyota OEM or Optima ds46b24r. They are the only drop-in replacements that are available in North America. The battery spec requires an AGM with Japanese pencil posts, so not just any battery will do.
  8. n00bz

    n00bz New Member

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    I just performed the flash codes to the car, i get abs 42 and vsc 45? can you shed some light on that?
  9. Wolfie52

    Wolfie52 Senior "Jr" Member

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    "...as for the inverter water pump recall, it expires in 2013... so wait till yours dies. (pink fluid stops moving)"

    Why on earth would you wait to get a FREE repair done, especially when you are going to be there anyway??

    Get it done now. There is no cost and I would think this is a part that will not go bad again. I had mine done right away, even though there was not a problem. Been a while now and still no problem.

    It is one less nagging worry to have while you are on a 600 mile road trip...
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  10. n00bz

    n00bz New Member

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    New battery, did the reset abs, still same thing

    I noticed the rear 2 tires have barely any tread and waving, right rear shocks leaking.
    Two front tires are almost new. Can this be setting the lights off? But i have done the reset?
  11. n00bz

    n00bz New Member

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    I will thank you for the reminder, but right now i have a bigger issue with the brakes, its my only car to and from work. I have to fix this first and i don't have $2000 and a week without a car.
  12. seilerts

    seilerts Battery Curmudgeon

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    HaroldW and n00bz like this.
  13. n00bz

    n00bz New Member

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    i'm going to try the relays tommorrow. I just wished I had that in pictures. I hope i don't short anything out. Thank you for the post.
  14. n00bz

    n00bz New Member

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    Dam, relays all good. Not one fuse blown on the car. Performed another reset, still abs 42 / vsc 45 / ! not blinking, alarm still on. I think its time for the skid control module, and have it reprogrammed.
  15. n00bz

    n00bz New Member

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    Resolved finally, it was the skid control ecu in my case. New battery, rear shocks and rear tires along the way. Good experience too, i learned more about the prius. Thank you Seilerts for the effort and time. My advice to anyone that has this problem.....get it fixed fast.
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  16. seilerts

    seilerts Battery Curmudgeon

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    Thanks for letting us know. We'll all have to remember that ABS 42 and VSC 45 probably mean replace ECU. I wonder if it is an early model problem (2004-2005) as well.
  17. bharat

    bharat New Member

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    Can Skid Control ECU replaced by the old one?(PART # ARE SAME FOR OLD AND NEW).
    Will Toyota be able to do the reprogramming?
    Any Guidence will be greatly appreciated.
    I have Toyota Prius 2004 and it needs Brake Actuator ASSY and Skid control ECU,
    Both parts I got from the other car with same part #s.
    Only worry is can toyota or some other mechanic shop put them on and reprogramme?
    Any body knows any toyota Prius mechanic shop other than Toyota Dealer in Toronto?
  18. Fbpk

    Fbpk New Member

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    I am new to forums not exactly know how to use them, but I need help.
    My 2005 T4 prius has got a problem and error codes are C1313 AND C1373 and car will require a new skid control ecu and part number is
    T89540-47120
    Problem is Toyota Dealer in London are asking 1900£ for this repair though I bought this car in 4500£ 7 months ago. I can not see this part anywhere on internet available either new or used. Can I get some help please.
  19. seilerts

    seilerts Battery Curmudgeon

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    Given that the car is right-hand-drive, you may be out of luck. But scour the breaker's yards, it is possible that you will find one, since the LHD versions are abundant here.
  20. Fbpk

    Fbpk New Member

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    Wanted Adverts - Car, Van, Motorbike and Truck PartsCar Parts Wanted - Toyota - Find a Breaker

    According to this add this part has another name which is available here, can I go for that?
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