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  • Disabling the reversing sensors

    Mods if you think this should go into 'Little Things' instead of a separate post please feel free to move. There are a lot of posts about the sensors but not a 'how to disable' thread so I thought I would start one.

    A lot of us seem to have the reversing sensors fitted and I guess most of us have had enough of the device screaming when you fit a trailer or bike rack on the back. I spoke with Mr Toyota when I bought the car to see why there wasn't a cut out like Holden and Ford and others do and was told that this could only be fitted at the factory. Rubbish but anyway I gave up but still complained at the noise.

    D4D mentioned the NARVA connectors with reed switch in another post though he has yet to fit one and also Corey has fitted a system to allow him to switch the sensors off when he needs to.

    I bought a NARVA 82043BL 7 pin flat socket with Reed switch last week and put it on this morning in about half an hour. Very easy job with a blood pressure lowering result.

    The socket I bought has the normally closed reed switch. That is the circuit is continuous unless the socket is opened and a plug inserted then the circuit is interrupted.

    This is the socket in its packaging. Cost was $26 from REPCO Enoggera.



    As you can see it is almost identical to the genuine part only the two extra terminals are different.



    You can wire one side of the reed switch to earth and then use the other terminal for your earth supply to the reversing sensors module but I decided to run a paired cable and simply interrupt the existing earth. For this I had some left over speaker cable in the bits box. You will need about 1300mm of wire, I ran things a little close and didn't need to cut any excess off.

    As you can see here I simply ran the two ends to the extra terminals.



    I ran the cable alongside the trailer cable and covered it all in plastic spiral wrap to protect it.

    At the left hand side of the car you will find where the cable from the sensors goes up into the pocket where the jack is kept.



    I pulled the grommet out and with some wire encouraged the cable to go through the grommet with the existing wiring. A little silicon seals it all up.



    This is the plug that I selected to connect to. Be careful as the pins come out of the plug quite easily and the pins are really pretty fragile. If you accidentally break off the locating tabs on the pins they won't lock into the plug properly.

    All I did was cut the earth cable and join both sides of the cut to each end of the speaker cable running up from the trailer socket. When the socket is closed the earth signal is continuous. From the earth through the trailer socket and back to the connector. When the socket is open the circuit is broken and the sensor unit is not earthed and does not operate. I soldered and heat shrank the joints but as I know there are those who don't like soldering you can also just use a crimp connector.



    A little insulation tape over the heat shrink to hold it all together neatly.



    Once it is all tidied up the area looks just like a bought one.



    From start to finish about half an hour and the satisfaction of not being screamed at

    PRICELESS!
    My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic

  • #2
    Re: Disabling the reversing sensors

    Excellent work and excellent write up this is a defintie to do item for me I have had enough of the high pitch tone.
    Roll on the 2010 Pradopoint GTG
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    • #3
      Re: Disabling the reversing sensors

      Nice work, I'll get around to doing this one day.
      [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

      Comment


      • #4
        Re: Disabling the reversing sensors

        Great work - however, if you have the Toyota reverse parking sensors there is a switch on the speaker that is High, Low and Off.

        I flick mine to off when I have the trailer on and bobs your uncle - no noise.

        The speaker is normally velcroed to the side panel, inside the jack spot (as above) - the switch is on top of the speaker.
        June 2008 D4D 6sp Manual GXL. Toyota bull bar, Custom Leather, Piranha Duel Battery, Bridgestone D694s, IPF 900XS, ScanguageII, front radiator bash plate and Uniden UHF

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        • #5
          Re: Disabling the reversing sensors

          Originally posted by metro09
          Great work - however, if you have the Toyota reverse parking sensors there is a switch on the speaker that is High, Low and Off.

          I flick mine to off when I have the trailer on and bobs your uncle - no noise.

          The speaker is normally velcroed to the side panel, inside the jack spot (as above) - the switch is on top of the speaker.
          The simple things. I found this switch on the wife's car but didn't even think about it on the Prado ops:
          [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

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          • #6
            Re: Disabling the reversing sensors

            Originally posted by metro09
            Great work - however, if you have the Toyota reverse parking sensors there is a switch on the speaker that is High, Low and Off.
            I never knew this... but I'll be checking it out as soon as the wife comes home with the Prado! With the camper trailer attached, the reverse parking sensors are a real PITA... but this should be the answer. Thanks heaps metro09!
            [B][SIZE=4]ntp
            [/SIZE][/B][COLOR=#000040][B][SIZE=1]Love the Outback............. Love my Prado.[/SIZE][/B][/COLOR]
            [I][SIZE=1][URL="http://i520.photobucket.com/albums/w328/ntpryce/Picture23.png"]My Prado[/URL][/SIZE][/I], [I][SIZE=1][URL="http://i520.photobucket.com/albums/w328/ntpryce/MyExtras.png"]My Extras[/URL][/SIZE][/I]
            [B]4wdriving First Party[/B][COLOR=#0000ff] - [/COLOR][B][COLOR=#0000ff]dןǝɥ ɹoɟ ןןɐɔ 'sıɥʇ pɐǝɹ uɐɔ noʎ ɟı[/COLOR][/B]

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            • #7
              Re: Disabling the reversing sensors

              Prado's back and I was straight in. Exactly as metro09 said. The reverse parking speaker is positioned just behind the jack and the "off, lo, high" switch is easily visible and accessible. Here's some pics to show others:

              Speaker to right just behind jack


              Close-up of speaker and switch


              I'll now be using this everytime when I go camping with the camper trailer attached. :mrgreen: :mrgreen: :mrgreen:
              [B][SIZE=4]ntp
              [/SIZE][/B][COLOR=#000040][B][SIZE=1]Love the Outback............. Love my Prado.[/SIZE][/B][/COLOR]
              [I][SIZE=1][URL="http://i520.photobucket.com/albums/w328/ntpryce/Picture23.png"]My Prado[/URL][/SIZE][/I], [I][SIZE=1][URL="http://i520.photobucket.com/albums/w328/ntpryce/MyExtras.png"]My Extras[/URL][/SIZE][/I]
              [B]4wdriving First Party[/B][COLOR=#0000ff] - [/COLOR][B][COLOR=#0000ff]dןǝɥ ɹoɟ ןןɐɔ 'sıɥʇ pɐǝɹ uɐɔ noʎ ɟı[/COLOR][/B]

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              • #8
                Re: Disabling the reversing sensors

                metro09, this has been the most useful "simple fix" I have ever found... anywhere! And at no cost!
                Burger
                2008 D4D VX, Burnt Ash... Sovereign Bar, Light Force 140's, Rear Kaymar Work/Camplight, ORS Drawers, Cargo Barrier, Entertainment for the Kids, Entertainment for me and the Missus - Polaris NextGen, Sheepskin Covers, Snorkel... can't think what else! To come - Sliders, Under body protection, Diff breathers, Winch.

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                • #9
                  Re: Disabling the reversing sensors

                  Grave dig, I might fit a switch like this so I don't have to rip the jack cover off all the time.
                  http://www.haymanreese.com.au/products/ ... hpatch.htm

                  [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

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                  • #10
                    Originally posted by D4D View Post
                    Grave dig, I might fit a switch like this so I don't have to rip the jack cover off all the time.
                    http://www.haymanreese.com.au/products/ ... hpatch.htm

                    Thats what i did. Just hit the switch and turn the dam thing off when you have the trailer or van attached

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                    • #11
                      I have looked in the manual and searched the forum. Any update on this for the latest 2.8 model? Driving me nuts backing the boat!
                      I can't find a switch in the back by the jack. I would have hoped Toyota had this sorted, but have a brand new vehicle with factory supplied tow bar....

                      Mods, pleaee move to 150 forum if appropriate

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                      • #12
                        The switch is on the dash near the traction control switch.
                        My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic

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                        • #13
                          Thanks for the reply, but no switch there on mine. Traction control is surrounded by three blanks.... Short of reading the whole manual I can't find reference to it?

                          Comment


                          • #14
                            That's odd, which model?
                            My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic

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                            • #15
                              Brand new 2.8 VX (NZ model).

                              Comment

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