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Rear Hatch Lock / Sensor

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by nooonesshowmonkey, Aug 11, 2020.

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  1. nooonesshowmonkey

    nooonesshowmonkey New Member

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    Vehicle:
    2010 Prius
    Model:
    III
    Howdy. First post on the forum, but I've used a few of the threads here to solve other minor quibbles with the otherwise incredible Prius.

    A few months ago, the rear hatch of my 2010 Gen 3 Prius decided that it was no longer going to open. The rear hatch will not respond to the proximity sensor / fob, nor does it open to the actual trunk release button when pressed while unlocked.

    The key fob works on both the front driver and passenger door. The fob battery is new. The low voltage battery was replaced a little over a year ago.

    So, what parts do I need to replace? Is the whole actuator toast? Or is it just the sensor?

    As is, I have a piece of 550 parachute cord running to the mechanism, with the tail coming up into the rear trunk area. I have to crawl into the back to yank on the cord and release the lock, then headbutt the gate open unless someone is outside to pull it up.
     
    #1 nooonesshowmonkey, Aug 11, 2020
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  2. nooonesshowmonkey

    nooonesshowmonkey New Member

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    Location:
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    Vehicle:
    2010 Prius
    Model:
    III
    Nobody?

    This hasn't happened to anyone else?

    I'm assuming that it's just the switch. I'll start there and report back.
     
    #2 nooonesshowmonkey, Aug 15, 2020
  3. bisco

    bisco cookie crumbler

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    i don't think you can guess at it. you're probably gonna have to pull the hatch panel off and start experimenting.

    maybe start by looking for voltage...
     
    #3 bisco, Aug 16, 2020
  4. EricOfman

    EricOfman New Member

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    Location:
    Auckland
    Vehicle:
    2009 Prius
    Model:
    i-Tech
    I have exactly the same problem.
     

    Attached Files:

    #4 EricOfman, Aug 16, 2020
  5. EricOfman

    EricOfman New Member

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    Vehicle:
    2009 Prius
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    i-Tech
    I've got the same problem. I'm guessing it needs a new boot release. Before I fork out money on a new one I would like to test it but I can't find any information on the 3 pins. If anybody can identify the pins that would be very helpful.
     
    #5 EricOfman, Aug 16, 2020
  6. bisco

    bisco cookie crumbler

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    Plug-in Base
    salvage?
     
    #6 bisco, Aug 17, 2020
  7. dave gilmour

    dave gilmour Junior Member

    Joined:
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    Location:
    london
    Vehicle:
    2010 Prius
    Model:
    N/A
    Same problem for me, my 12v battery died. I jump started it and the car is all working fine APART from the boot/trunk release no longer works.

    Did you ever fix this?

    Posted via the PriusChat mobile app.
     
    #7 dave gilmour, Jul 13, 2021
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  8. dave gilmour

    dave gilmour Junior Member

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    Location:
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    Did you ever figure this out?
    Posted via the PriusChat mobile app.
     
    #8 dave gilmour, Jul 13, 2021
  9. Boxo

    Boxo New Member

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    Location:
    Black Mountain, NC
    Vehicle:
    2010 Prius
    Model:
    III
    I've just had the same thing happen to me. A dead 12 volt battery, used the manual release to open the hatch, jump started the car. The car is back to running fine but the rear hatch no longer unlocks automatically! Did anyone ever figure this mystery out?
     
    #9 Boxo, Apr 12, 2022
    mavisleonard likes this.
  10. mavisleonard

    mavisleonard New Member

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    Location:
    los angeles
    Vehicle:
    2011 Prius
    Model:
    III
    same problem. i feel like it is something i can fix/replace myself if someone here could tell me how they fixed theirs, it would be helpful
     
    #10 mavisleonard, Apr 16, 2023
  11. Roccobro

    Roccobro Junior Member

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    Location:
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    Vehicle:
    2002 Prius
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    I
    One of my prius started doing this. Anyone ever get theirs fixed and still around to share how they did it?
     
    #11 Roccobro, May 6, 2024
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