Brake Booster Malfunction

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by KBee, Feb 16, 2022.

  1. rjparker

    rjparker Tu Humilde Sirviente

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    The class action was on inverters which is still available. The brake booster “customer service program” has expired for most due to its 10 year/150k limit. Used parts are not recommended for safety and to avoid wrong or bad parts. While the part(s) can be bought for less online from Toyota dealers, the labor is still significant and special calibrations and bleeding techniques are needed. Some independent hybrid shops can save a little if close enough.
     
    #81 rjparker, Oct 24, 2023
    Last edited: Oct 25, 2023
  2. ASRDogman

    ASRDogman Senior Member

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    WHY would you think that your car is not wrth $8000?
    It's paid for isn't it? What would you be paying if you had a car payment?
    And for how long?
    You should shop around and see if you can find some place that will cost less to repair it.


     
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  3. C-in-DC

    C-in-DC Member

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    You could, in theory, still get $8,000 per Kbb.com even if you have the abs issue.There is a way to do the repair without the costs you’ve been quoted but you gotta find the right Independent mechanic.
     
  4. Swellgal

    Swellgal Junior Member

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    I got a Costco Auto discount coupon and saved me $500. Total cost ended up $2500. Then, 20 miles after I got my car back, my TPMS warning light did the blinking AND hot air only was coming out of my air conditioner. I took it back to the dealer and they said the problems could not be related to the repair. I asked them to double check out the warning light issue and AC and not charge me the $195 diagnostic fee. He said he'd waive it and got back to me saying I need to replace at least one sensor to get the light off and that sensor problems don't happen when doing the master cylinder/ booster repair. But, conceded that the AC needed to be rebooted due to being unhooked during the repair and that was not done. (Details something like that, anyway justified the waiving of diagnostics, I guess). So dealer wants $410 to replace one sensor to turn off the light. Says I should get all four replaced. I said no thanks and will pick up my car without more repairs there. Costco down the street will replace one sensor for $65. Why did I get such a lemon 2010, gen 3, less than 60K miles, solar/nav., custom real leather seats...... ugh.
     
  5. C-in-DC

    C-in-DC Member

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    The ac compressor and brake booster are on opposite sides of the engine bay. I guess the lines get close once they reach the fire wall but that scenario sounds like bs.
     
  6. rjparker

    rjparker Tu Humilde Sirviente

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    As you note, costco charges $60-$65 for installing one TPMs sensor. Most tire shops like Discount Tire will also do it for less than $100.

    Glad they fixed the AC. My hunch is they disconnected a connector and did not reinstall.
     
    #86 rjparker, Nov 15, 2023
    Last edited: Nov 15, 2023
  7. TranquiloQuieto

    TranquiloQuieto Junior Member

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    Hey man what ended up happening with this ? I bought parts online and installed them myself took to dealer to program and they told me parts won't work because I needed the updated ones.
     
  8. C-in-DC

    C-in-DC Member

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    New or used parts?
     
  9. TranquiloQuieto

    TranquiloQuieto Junior Member

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    I bought them new for a 2011 toyota prius
    Brake master cylinder 47050-47140
    Pump brake 47070-47060
     
  10. C-in-DC

    C-in-DC Member

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    That’s the right brake master cylinder. I don’t know about the pump. I got used one.
     
  11. C-in-DC

    C-in-DC Member

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    Do you have access to techstream ? They’re just telling you that because you installed the parts. No one likes working after someone else.
     
  12. Maestromm

    Maestromm New Member

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    i got this issue with booster/accumulator and I am in Houston, can you please share the contacts of the guy that fixes that in Houston
     
  13. rjparker

    rjparker Tu Humilde Sirviente

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    Hometown hybrids
     
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  14. PopCorkOff

    PopCorkOff Junior Member

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    Wow, that price is a bargain ! I got a recent quote at 2200 dollars for the parts alone [booster pump and master cylinder] before tax ! Last month I replaced the booster pump myself, which includes the accumulator, as an assembly. Cost from Amazon was $450 total.
     
    #94 PopCorkOff, Apr 13, 2024
    Last edited: Apr 13, 2024
  15. HeavyFooted3SGTE

    HeavyFooted3SGTE Junior Member

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    I want to replace the brake booster and actuator in my 2014 Prius. I'm having trouble finding the part number for the brake master cylinder even using the VIN. Is there a good source to find the right part?
     
  16. rjparker

    rjparker Tu Humilde Sirviente

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    Any of the online Toyota Parts Dealers. In fact they will be the best price since there are no aftermarket or rebuilt sources. Typically you can get 20-25% discounts. Not all dealers discount the same so once you have your part number, google it and look through ten or more dealers. Message them if you can't figure it out through their website.

    These are two I have used
    McGeorge / Ourisman
    https://parts.ourismantoyotaofrichmond.com/

    Hoover Toyota
    Genuine Toyota Parts and Accessories: Official Online Store Hoover Toyota

    Some local dealers also sell online but their walkup parts department won't give you a discount. However the same online dealer may allow ship to store where you pick it up without a shipping charge.

    Also Toyota Corp has holiday sales through these same dealers when dealer and corporate discounts can be as high as 50%. Most likely the week of labor day will be the next big sale.

    Don't believe used ebay sellers when they say it's good for this year or group of years. Most don't realize every year and model (hatchback, v wagon, plugin, c) each have different brake boosters and each have at least two versions, often based on tire size. Some specific models with the same tire size might have the same brake booster for a couple of years. Used parts are a bad bet even if you know the vin of the donor car and cross check its brake booster part number vs yours. Toyota brake boosters are known to fail and are likely bad when stripped from salvage cars.
     
    #96 rjparker, Aug 12, 2025 at 9:44 PM
    Last edited: Aug 12, 2025 at 9:56 PM
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  17. HeavyFooted3SGTE

    HeavyFooted3SGTE Junior Member

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    Thanks for the advice. I'll only be buying new OEM. It seems like every search with my VIN yield BMCs for 15" and 17" wheels, PHEVs, and assemblys with fluid. I believe this correct one for a 2014 Prius 4 with 15" wheels is Brake Master Cylinder Assembly #47050-47310 and Brake Booster Pump Assembly with Accumulator is #47070-47060.
     
  18. johnHRP

    johnHRP Active Member

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    Thanks @rjparker, 25% is a great discount. Tire size (width) indeed affects the braking performance a lot more than disc size alone.