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Thread: D3 trailer indicators flickering.

  1. #1
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    D3 trailer indicators flickering.

    Hi guys, my D3 when a trailer is hooked up fires up the indicators - quick flickers constantly (trailer has LEDs).

    Indicators work normally otherwise, brakes, hazards - all work otherwise just getting a constant flicker.

    I believe this shouldn't be the case, but just checking - is it maybe a safety feature which is there for what ever reason. They are flashing quicker than the hazards, and maybe even not as strong.

    I'll try fixing it but asking before I stuff something up.

    Cheers Mike

  2. #2
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    These two links explain it. They operate differantly (and priced!!!) but give you the same, flicker-free result.

    What it does, is to simulate the same electrical behaviour to the car's ECU, as an incandescent lamp set. This allows the Clever Box of Bits to think that a trailer IS plugged in, and all it's globes are working. At the moment, your car is not talking nicely with your trailer...

    http://www.gore-research.com.au/trai...r-modules.html
    - Which is fitted to your car, and you can tow any trailer, LED or 'normal' lights,

    or


    Linear Electronic Design | Home
    Which is fitted to your trailer(s) and can be towed by by any car, new or old.

    I'm sure there are less expensive alternatives...

    We are not alone...
    http://www.clubtouareg.com/forums/f6...hts-61597.html

    http://www.redarc.com.au/handy-hints...d_dummy_loads/

  3. #3
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    Thanks superquag!

    But that's an extra add on, is there any way to fix without the add on? I have two trailers which I use, and what happens if I get a trailer from a local soil place for example and the lights continue to flash...??

    Cheers

  4. #4
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    You must have seen the first - incomplete - post when you answered...

    Sadly, either way it's an add-on. On the car, OR the trailer.

    But, anyone who can afford a D3 .................

    PM if you want further info/abuse/smart comments about late model LRs...

    James in Gosnells
    Classic '95 Vogue SE with working air suspension...and a son who disses all LR and Rangies...but insists on driving mine.

  5. #5
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    As superquag said, this is a locally manufactured cure for trailer light flashing:



    Trailer Towing Modules

  6. #6
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    Am all for the local product, but,

    - if the stability control and braking of a D3 are normally altered when a trailer is plugged in... this could be a worry. From the blurb, the unit is invisible to the car's systems, so it does'nt know a trailer is attached...


    Still needs an auto-sparky or someone adventerous and competant to fit it.

    More options, for plug'n'play:-
    http://www.ledtowconnect.com/2012/06/Discovery-3.html

    Or this thread... http://www.aulro.com/afvb/d3-d4-rrs/...er-module.html

  7. #7
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    Hera is a link to a discussion on this topic

    the post 141 is box I made for RRS with off the shelf components.



    http://www.aulro.com/afvb/d3-d4-rrs/...lights-15.html

    The vehicle systen interogates the the indicator to check for a 21 watt trailer indicator bulb. When the load is recognised the trailer icon is illuminated and the driving characteristic of the vehicle are altered. eg disable reversing alarm. LEDs do not respond as they have much less load.
    This is overcome by a 21watt dummy load.

    The flashing is not defeated by the dummy load. A relay is also needed to remove this

  8. #8
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    G'day Grappler,

    The flashing is not defeated by the dummy load. A relay is also needed to remove this

    Odd... I would have thought the relatively low impedence of the resistors would absorb the short pulse sufficiently so as not to be visible on the LEDs. Perhaps a small capacitor, say 0.47uF, or even a low value electrolytic/drain resistor.???

    Just to clarify for me... you've got a pair of 25W load resistors that mimic the presence of trafficator trailer bulbs....and, these trigger a relay which feeds each indicator on the trailer.

    How about the 'brakes' and 'parking lights' circuits? - Does'nt the RRS on-board diagnostics check these as well? Differant to the D2/ D3? D4? - (Evoques don't count)

    Anyway, you've got me thinking about another LED project...

  9. #9
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    Quote Originally Posted by superquag View Post
    G'day Grappler,

    The flashing is not defeated by the dummy load. A relay is also needed to remove this

    Odd... I would have thought the relatively low impedence of the resistors would absorb the short pulse sufficiently so as not to be visible on the LEDs. Perhaps a small capacitor, say 0.47uF, or even a low value electrolytic/drain resistor.???

    Just to clarify for me... you've got a pair of 25W load resistors that mimic the presence of trafficator trailer bulbs....and, these trigger a relay which feeds each indicator on the trailer.

    How about the 'brakes' and 'parking lights' circuits? - Does'nt the RRS on-board diagnostics check these as well? Differant to the D2/ D3? D4? - (Evoques don't count)

    Anyway, you've got me thinking about another LED project...
    Ive never put a scope on the pulse signal, and dont know the electronic characteristics so cannot comment on your proposed solution

    All I know is it solves the the non recognition and pulsing problems when using a led trailer with my 06 RRS.
    Attached is the origional diagram posted by Colin Pedersen. As you can see the device only effects the indicators . All other wires pass straight through
    Attached Files Attached Files

  10. #10
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    Very cunning circuit... Can you recall if the resistors were 6 ohms or 8 or 10 ohms?

    6 ohms equates to 24W at 12v, and 18W for the 8 ohm.

    By now the OP will be totally confused...... :->

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