Sudden loss of hydraulic brakes in a 2010 Prius known defect!

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by mikeflores2000, Oct 20, 2025 at 4:25 AM.

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  1. mikeflores2000

    mikeflores2000 Junior Member

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    While driving about 60 miles per hour, I suddenly lost all braking ability and heard a continuous beeping sound.
    I later learned that Toyota issued Safety Recall D0H and a Customer Support Program called ZJB for brake booster and accumulator failures on 2010 Prius models.

    Coverage lapsed at 10 years from first use to 150,000 miles. Odometer about 203,863 miles.
    Brake pads and fluid replaced September 2024 at 198,658 miles. Worth fixing this issue?
     
    #1 mikeflores2000, Oct 20, 2025 at 4:25 AM
  2. Tombukt2

    Tombukt2 Senior Member

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    Yep all that happened now basically replacing about 1400 bux of firewall mounted brake parts. Unless the cars the real nice keeper probably not me. Personally we don't deal with this gen 3 business
     
    #2 Tombukt2, Oct 20, 2025 at 7:08 AM
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  3. ChapmanF

    ChapmanF Senior Member

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    D0H was a recall of some 2010s that shipped with bad accumulators. (The metal bellows inside was manufactured undersized, so it would bang around inside the can on bumpy roads, and develop early cracks.)

    It was a recall, so it should have been performed on your car long ago. If you're sure that it wasn't performed, there's an easy way to look at the accumulator label to see if you had one of the bad ones or not.

    ZJB was a customer satisfaction campaign for cases where the actuator (not accumulator) developed small internal leaks early.

    Neither of those conditions would directly cause "lost all braking ability". The continuous beeping alarm, yes, and harder pedal effort to stop the car in the fail-safe braking mode.

    By any chance, in time leading up to this, had you been noticing a rushing sound sometimes when applying or releasing the brakes, or a kind of quack / bark / honk saxophone-like sound when releasing the brakes?
     
    #3 ChapmanF, Oct 20, 2025 at 11:02 AM
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  4. mikeflores2000

    mikeflores2000 Junior Member

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    Only a beep on occasion since 2024.
    I should have investigated root cause at that time.
    I’m going to sale vehicle as is. $2000 to $3000
    replacement of Brake Booster and Accumulater
    Is cost prohibitive. San Francisco Toyota’s Sam told me replacement done 7/29/2013 at 65,239 miles under D0H recall. On 7/1/2010 Stevens Creek Toyota replaced ABS Actuator under recall
    A0B.
     
    #4 mikeflores2000, Oct 23, 2025 at 4:12 PM
  5. BiomedO1

    BiomedO1 Senior Member

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    Well, at least you were able to ignore the problem for a year...:rolleyes:o_O Lucky you didn't get hurt or hurt someone.
     
    #5 BiomedO1, Oct 23, 2025 at 6:41 PM
  6. bisco

    bisco cookie crumbler

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    15 years old, 200k, good move. what's next?
     
    #6 bisco, Oct 23, 2025 at 8:47 PM
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