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Headunit won't turn on after MDI install?

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  • #1

    Headunit won't turn on after MDI install?

    Hey all,

    I've got an RCD500 in my MY08 R32 - it's got the newer CANBUS, so ready for an upgrade to an RCD510.

    So I've bought an RCD510, MDI Retrofit kit, and 729W Bluetooth kit - removed the RCD500, then connected the MDI retrofit kit using the instructions.

    The MDI harness install was a PITA, as I had to remove wires 9,10, 12 & 15 from the quadlock & replace them with the MDI wires, then connect the originals to the MDI.

    I connected the RCD510, but it wouldn't power on. When connecting the quadlock, I get nice whirring noises from the RCD510 like it's ejecting a CD - but the power button doesn't turn it on.

    So I removed the RCD510 & put the RCD500 back in - same thing.

    Got out the trusty multimeter, and checked the voltage - the power positive (15) & negative (12) give me +12.4V, and the CANBUS High (9) & CANBUS Low (10) give me -11V - also checked the Display Voltage (11) & supply negative (12) also gives 12.4V.

    So I removed the MDI kit & put all the pins back as originally connected, hooked up the RCD500 - and still the same bloody thing!

    I've checked the Radio & Sound System fuses in the engine bay - both look fine.

    I'm starting to think I should have just paid someone to install the kits!


    Has anyone got any idea WTF is going on? Have I tripped a different fuse and/or busted something?


    PS - Mav's site my-gti.com has been very very handy - yet I'm still stuck
    Last edited by shauno; 21-03-2011, 07:29 PM.
    2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon
    Tags: None
  • #2
    has it overheated maybe shauno.

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    • #3
      give george at vw village a call 96633072

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      • #4
        No chance it's overheated, the same thing happened two days in a row - but yeah, I may have to give George a call (or go drop in)...

        I'm hoping someone here has got a clue as to what's wrong, so I can fix it myself - I'll clear all the error-codes tonight & do a new VAGCOM scan with the RCD500 plugged in, see what that shows up.
        2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon

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        • #5
          Originally posted by shauno View Post
          No chance it's overheated, the same thing happened two days in a row - but yeah, I may have to give George a call (or go drop in)...

          I'm hoping someone here has got a clue as to what's wrong, so I can fix it myself - I'll clear all the error-codes tonight & do a new VAGCOM scan with the RCD500 plugged in, see what that shows up.
          Did you do the work with the battery disconnected?

          I'd pull the battery lead, put the RCD 500 back in place and reconnect (leave it at least 10 minutes) and see if it works after that.

          Also check that you have the gateway configured for the head unit. Don't forget the ground pin swap between the Gen 2 and Gen 3 (for the audio in) if applicable although this is only a audio quality issue if you don't do it.
          website: www.my-gti.com

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          • #6
            No, I had the battery connected the whole time.

            I'll put everything back, clear the VAGCOM codes, then pull the battery lead for 15 mins and see if that makes a difference - fingers crossed!
            2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon

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            • #7
              did you sort it out shauno

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              • #8
                Battery is currently disconnected as per Mav's suggestion...

                Turns out there's about 10 x T40 bolts on a cover over the battery - I knew it was in the boot, but expected it to be easier to access!
                2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon

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                • #9
                  any photos of your new r32

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                  • #10
                    where did you source the bluetooth kit and MDI Retrofit kit

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                    • #11
                      Battery disconnect made no difference - same results.

                      VAGCOM scan can't contact the radio module, so that sounds like a red flag to me...

                      Originally posted by robbie View Post
                      where did you source the bluetooth kit and MDI Retrofit kit
                      From the UK - the BT from eBay (see the BT thread) and the MDI retrofit from shop4vw.
                      Last edited by shauno; 22-03-2011, 08:35 PM.
                      2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon

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                      • #12
                        don't tell me dermot vw have sold you a mk5 r32 with and electrical problem.

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                        • #13
                          your more than welcome to try or buy my rcd500 thats is virtually new you can have it for $100.00 shauno

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                          • #14
                            did you buy the MDI Retrofit kit from these guys VW MEDIA IN INTERFACE MDI RNS510 MFD3 RETROFIT KIT 0060 (eBay item 270645891622 end time 05-Apr-11 23:27:13 AEST) : Cars, Bikes, Boats and your bluetooth kit is this one http://cgi.ebay.com.au/New-OEM-Bluet...item41555b2996
                            Last edited by robbie; 22-03-2011, 08:53 PM.

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                            • #15
                              Originally posted by robbie View Post
                              don't tell me dermot vw have sold you a mk5 r32 with and electrical problem.
                              No, the car worked perfectly when it arrived - and I've got no reason to believe my RCD500 or RCD510 have any problems... it's likely that there's a problem with the CANBUS radio interface due to my wiring skillz while installing the MDI kit (which I've since removed).

                              Yes, that's the BT kit I bought - as per the BT thread - please post your replies there if you want to discuss it (although mine's still in the box). MDI was from Shop4Volkswagen - Genuine Volkswagen parts and accessories, not from eBay.
                              2006 MkV 2.0TDI -> 2005 MkV GTI -> 2008 MkV R32 -> 2013 Polo 77TSI + 2016 Mk7 Golf R Wagon

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