Failed Transmission on low mileage Prius V

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Right2Know, Jul 15, 2025 at 7:32 PM.

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  1. Get 2nd opinion from dealership mechanic.

    0 vote(s)
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  2. Get 2nd opinion from non-dealership mechanic.

    0 vote(s)
    0.0%
  3. Replace the transmission at the dealership.

    0 vote(s)
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  4. Find an alternative mechanic to replace the transmission.

    1 vote(s)
    100.0%
  1. Right2Know

    Right2Know Junior Member

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    V
    Do Prius V transmissions fail? Does it cost $6,000 to replace it?
     

    Attached Files:

  2. rjparker

    rjparker Tu Humilde Sirviente

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    Polls? Give me a break.

    No (they have almost no failures) and no (maybe $1500 if you can find a salvaged v transaxle NOT a hatchback transaxle AND a good independent hybrid shop ).

    What are the symptoms and issues you had? Not just a dealers report.

    From tech
    80054 CONNECTED THE SCAN TOOL TO THE VEHICLE. PULLED CODE U0110-160 (LOST COMMUNICATION WITH DRIVE MOTOR CONTROL MODULE A). CHECKED THE MODULE A) CONVERTER INVERTER WITH CONVERTER ASSEMBLY (GENERATOR CABLE CONNECTION
    CONDITION). THE BOLTS ARE TORQUED PROPERLY AND THERE ARE NO ARC MARKS FOUND. CHECKED THE CHECK INVERTER WITH CONVERTER ASSEMBLY (MOTOR CABLE CONNECTION CONDITION). THE BOLTS ARE TORQUED PROPERLY AND THERE ARE NO ARC MARKS FOUND. I CHECKED THE HYBRID VEHICLE TRANSMISSION AXLE ASSEMBLY (MG1) WITH A MILLIMETER. THE READINGS ON THE CABLE ARE: PINS
    PINS W-U= 32M OHMS, PINS U-V= 30.9M OHMS, AND PINS V-W= 95.35M OHMS. THE FIRST 2 READINGS ARE OUT OF PARAMETERS SET IN THE REPAIR MANUAL (89.5M OHMS TO 98.9M OHMS). NEXT, I CHECKED THE HYBRID VEHICLE TRANSMISSION NEXT, THE READINGS ON
    AXLE ASSEMBLY (MG2) WITH A MILLIMETER. THE READINGS ON THE CABLE ARE: PINS W-U= 161.7M OHMS, PINS U-V= 21M OHMS, AND PINS V-W= 15M OHMS. THE SECOND 2 READINGS ARE OUT OF PARAMETERS SET IN THE REPAIR MANUAL IN THE (APPROXIMATELY 151.6M OHMS TO 174M OHMS). AT THIS TIME, THE REPAIR MANUAL IS DIRECTING ME TO REPLACE THE HYBRID VEHICLE MOTOR/GENERATOR ASSEMBLY (TRANSMISSION) AND RECHECK OPERATION.

    I might focus on the communication problem which is not in the transaxle. Inverters on gen3s have a history of issues.
     
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  3. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Who’s the caps-locked text attachment from?

    What’s the symptoms?

    what’s the miles?

    how about some backstory?
     
  4. Georgina Rudkus

    Georgina Rudkus Senior Member

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    I'd try another dealer.

    In a class action legal settlement, the inverter has an extended warranty,which means that it us still covered.
     
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  5. BiomedO1

    BiomedO1 Senior Member

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    They have a very low failure rate, but you could get a winding failure or lost ATF and kept driving it with low ATF - which would also destroy it.
    The failure rate is so low that I wouldn't hesitate to replace it with a used one; assuming the person who diagnosed it, got it right. The reason I question this is most winding failures either short or open - they're usually not just a few mega-ohms off. @Georgina Rudkus; double check that the problem isn't in the inverter assembly, because the test could've been botched - if the inverter wasn't disconnected.

    Hope this helps....
     
  6. Right2Know

    Right2Know Junior Member

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    V
    Thanks for the info. Car stalls at random times while in motion. Loses all power. Many lights in dash light up. Power steering and brakes work while rolling it to a stop. Turn it off and only one light usually stays on (yellow car with an exclamation mark through it). Car won't move until I've turned it in and off a few more times. The light eventually goes off. Car runs normally between stalls (no shuddering or hesitations).

    Thank you.

    Do you think the inverter could be causing the ohm readings??

    Thank you. I will ask the dealership if the inverter was disconnected at the time the PINS were ohm tested. Would a car with a transmission problem shudder and have hesitation? Could it just stall intermittently at random intervals?
     
    #6 Right2Know, Jul 16, 2025 at 12:05 PM
    Last edited by a moderator: Jul 16, 2025 at 2:52 PM
  7. Mendel Leisk

    Mendel Leisk MMX GEN III

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    One member here (forget the name, resided in Cape Caneveral IIRC), replaced his transaxle with a salvage unit, and enocountered problems, apparently due to it sitting around, unsealed, in the elements.
     
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  8. rjparker

    rjparker Tu Humilde Sirviente

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    A v transaxle has to be replaced with another v unit. But the inverter fits your symptoms. It definitely can cause stalls.
     
    #8 rjparker, Jul 16, 2025 at 2:36 PM
    Last edited: Jul 16, 2025 at 2:56 PM