Need help matching Prius brake booster/actuator part numbers + programming (2011 Prius IV)

Discussion in 'Gen 3 Prius Main Forum' started by zfk110, Oct 24, 2025 at 9:45 AM.

  1. zfk110

    zfk110 Junior Member

    Joined:
    Feb 2, 2014
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    Location:
    Atlanta, Georgia
    Vehicle:
    2010 Prius
    Model:
    Two
    Car: 2011 Toyota Prius IV (trim 4)
    VIN: JTDKN3DU5B0280137
    Mileage on removed unit: ~117k
    Symptom/history: Replacing brake booster/actuator and pump/accumulator

    From my car I pulled a unit marked 47270-47030 (that’s the number on the part I removed).

    When I look up my VIN on Toyota’s parts site, it shows:

    • Brake booster/actuator (with master cylinder): 47050-47140

    • Brake booster pump/accumulator: 47070-47060
    Questions:

    1. Is 47270-47030 an older/superseded number for 47050-47140, or is it a different sub-assembly?

    2. If my original part says 47270-47030, should I replace it with the VIN-matched 47050-47140, or do I need to find the exact same number as the one I pulled?

    3. Can I replace only the booster/actuator (47050-47140) if my pump/accumulator seems fine, or do these two parts need to be a matched pair?

    4. After installing 47050-47140, do I need to perform any initialization/calibration with Techstream?For example: linear solenoid offset/zero point, master cylinder pressure sensor zero point, yaw/steering angle, etc. (beyond the ABS/ACC brake bleed). I did it last time without any issues after replacing it on another car; those were used parts, not the new ones.
    5. If calibration is required, can Techstream do all of it at home, or is a dealer-level routine needed?
    I can post photos/labels of the removed unit if that helps. Thanks!
     
    #1 zfk110, Oct 24, 2025 at 9:45 AM
  2. ChapmanF

    ChapmanF Senior Member

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    Vehicle:
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    Model:
    IV
    Because Toyota's parts often have numbers visible on them that aren't their part numbers, this ends up being a FAQ. You can read more here and here. (That's a gen 2 thread, so you'll need different numbers for gen 3, but you'll get the idea.)
     
    #2 ChapmanF, Oct 24, 2025 at 10:10 AM
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  3. Tombukt2

    Tombukt2 Senior Member

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    Ap 200 8 believe can set it up for you bleed and linear valve .ster angle etc . Good luck . 67 bux AP 200 white Apple looking VCI BT
     
    #3 Tombukt2, Oct 24, 2025 at 10:37 AM
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  4. zfk110

    zfk110 Junior Member

    Joined:
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    Location:
    Atlanta, Georgia
    Vehicle:
    2010 Prius
    Model:
    Two
    I got this info from here

    TOYOTA PRIUSZVW30L-AHXGBA - POWERTRAIN-CHASSIS - BRAKE MASTER CYLINDER | Japan Parts EU


    7210L - BRAKE BOOSTER ASSY, W/MASTER CYLINDER
    47050-47140

    ( 1 )MARK=47210-47310(07/2010 - 12/2011)
    47050-47150

    ( 1 )TIRE & DISC WHEEL-215/45R17 7J,MARK=47210-47320(07/2010 - 12/2011)
     
    #4 zfk110, Oct 24, 2025 at 5:35 PM
  5. ChapmanF

    ChapmanF Senior Member

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    Vehicle:
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    Model:
    IV
    Remember that in your first post you said 47270-47030 was the number you read somewhere on your old part, and notice that the "MARK" you should be looking for will be something with a 47210 prefix, not 47270.

    From your post #4 example, an actuator with part number 47050-47140 will have mark 47210-47310, and an actuator with part number 47050-47150 will have mark 47210-47320.

    Here is an eBay listing where the seller found the same 47270 number you did, and thought that was the actuator's part number.

    You can find the 47210 "MARK" on that part on the forward edge, under the big TOYOTA:

    [​IMG]

    We see the MARK on that item isn't one mentioned before: 47210-47470. From this listing we can see that the part number for that item is 47050-47310.

    So where does the 42720 number you found (and these other sellers also found) come into the picture?

    It seems to be a number found on the plug at the bottom of the stroke simulator:

    [​IMG]

    It might be the part number of that plug in the end of the stroke simulator (which isn't for sale, but still needs a part number for factory purposes), or the part number of the whole stroke simulator (which also isn't for sale). Nobody should be distracted by it, just because it is visible, and think it is the part number, or even the "mark", for the actuator assembly.
     
    #5 ChapmanF, Oct 24, 2025 at 6:10 PM
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