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How to disable Horn when locking/unlocking Car

Discussion in 'Gen 2 Prius Technical Discussion' started by CJ33, Mar 30, 2009.

  1. CJ33

    CJ33 New Member

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    I've just spend the past hour going throught threads on here and can't find a simple solution to this problem (if there even is one).

    I don't have the smart key fob. I just have the normal key fob for a 2006 Prius.

    When I turn the car off and lock the doors (either using the remote or using the door lock switch inside the door) the horn honks.

    The horn also honks when I unlock the car using the remote.

    How do you turn this off? It's annoying and my neighbors are complaining.

    I don't want it to honk at me anymore when I lock or unlock the doors.
     
    #1 CJ33, Mar 30, 2009
  2. qbee42

    qbee42 My other car is a boat

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    I can't say with certainty, but I recall that you can't disable this "feature" on the base model.

    The SKS models have a very gentle beep when the doors lock. It is much nicer than a horn.

    Tom
     
    #2 qbee42, Mar 30, 2009
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  3. CJ33

    CJ33 New Member

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    Yeah, it seems no one can say with certainty... I don't have an SKS model, so the latter isn't an option for me.
     
    #3 CJ33, Mar 30, 2009
  4. The Tramp

    The Tramp Italian Prius Expert

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    That is curious: EU cars do nor beep nor horn when you open or close the car, SKS or not.
     
    #4 The Tramp, Mar 30, 2009
  5. hyo silver

    hyo silver Awaaaaay

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    I've got a 2004 'base' model, and it doesn't beep. When I picked it up, they asked, and I said 'no beep, please.' The dealer must be able to change the setting. Maybe there are instructions somewhere on John1701's site.
     
    #5 hyo silver, Mar 30, 2009
  6. CJ33

    CJ33 New Member

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    what is "John1701's site"?
     
    #6 CJ33, Mar 30, 2009
  7. hyo silver

    hyo silver Awaaaaay

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    Check out www.john1701a.com. I haven't searched the site to find out if the answer to your horn question is there, but there's a wealth of useful information about the Prius.
     
    #7 hyo silver, Mar 30, 2009
  8. HTMLSpinnr

    HTMLSpinnr Super Moderator
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    Is this "remote" the same as the key fob? Is there a 3rd party or aftermarket alarm? My folks have a base 2006 and there is no horn.
     
    #8 HTMLSpinnr, Mar 30, 2009
  9. The Tramp

    The Tramp Italian Prius Expert

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    #9 The Tramp, Mar 30, 2009
  10. CJ33

    CJ33 New Member

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    Yes, standard key fob.

    I bought the car used from a Honda Dealer who really didn't know much about Prius'.

    When I look under the driver's dash down by the pedals, there appears to be a kill switch over ride button hiding under the floormat. There's a blinking LED on it as well. It's not secured to anything, so it looks like there may have been an after market alarm installed at one point, but I don't have a remote for it.

    Would it be possible that is the cause of the horn to honk whenever I lock or unlock the doors using the factory key fob?
     
    #10 CJ33, Mar 30, 2009
  11. qbee42

    qbee42 My other car is a boat

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    That sounds correct. I suspect an after market alarm. The more we talk about this, the more convinced I am that the base model does not beep when locking.

    Tom
     
    #11 qbee42, Mar 30, 2009
  12. CJ33

    CJ33 New Member

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    that's strange then.

    i've installed after market alarms in the past and generally the horn honk would be tied into the alarm itself.

    I can't find a head-end alarm unit anywhere in the car, so somehow they tied the actual wiring of the door locks into the horn because the car honks using not only the key fob, but also when in use the interior door locking button on the door itself.

    If I'm sitting in the car, turn the car off, open the door and then press the door lock button on the inside of the door they horn honks as well.

    So, if I make that assumption, does anyone know what wire would be tied into the horn to make this happen?
     
    #12 CJ33, Mar 30, 2009
  13. darelldd

    darelldd Prius is our Gas Guzzler

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    My first thought was aftermarket alarm. Somebody will have to confirm, but I don't think that the Prius ever used the horn as a lock alert.
     
    #13 darelldd, Mar 30, 2009
  14. Bryan5

    Bryan5 New Member

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    Yeah I have a base 2008, and the horn doesn't go off when I lock/unlock the doors.
     
    #14 Bryan5, Apr 5, 2009
  15. hyo silver

    hyo silver Awaaaaay

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    Could there be an extra wire attached to the horn? But if you pull that, then the alarm won't sound at all, not just when you lock the car. Sounds like the 'beep' is in the aftermarket alarm unit - do you really need two alarm systems?
     
    #15 hyo silver, Apr 5, 2009
  16. RW5207

    RW5207 Junior Member

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    This sounds like someone added in a relay from the locking pulse going to the solenoid and connected it to the horn circuit for audible feedback, since it also occurs when manually locking the doors.

     
    #16 RW5207, Dec 16, 2011
  17. WilDavis

    WilDavis Senior Member

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    My 2009 Gen II (touring) has SKS, and would never dream of honking at me!
     
    #17 WilDavis, Sep 1, 2016
  18. goodMXguy

    goodMXguy Junior Member

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    Not possible? Strange...
     
    #18 goodMXguy, Jun 22, 2018
  19. bisco

    bisco cookie crumbler

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    anything is possible, but not everything is probable.
     
    #19 bisco, Jun 22, 2018
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