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PUMPKIN CAR STEREO SUPPORT CENTER • iusse after installing a 27-aqtu72
Page 1 of 1

iusse after installing a 27-aqtu72

Posted: Sun Mar 19, 2017 10:27 pm
by didiboy23
Hello,

After installing a 27-aqtu72-de on my mk4 golf my remote control of centralized closure no longer works, however using the key works. And as soon as I unplug it, it works again. (of course i had no probleme with the old head unit)
can you help me please.

Regard

Re: iusse after installing a 27-aqtu72

Posted: Tue Mar 21, 2017 7:08 am
by Jammy
Hi,
This unit is just an universal model which only support the steering wheel control based on resistance analog signal.
Could you please tell us if you used the adapter to make your steering wheel control work?
Regards

Re: iusse after installing a 27-aqtu72

Posted: Thu Mar 23, 2017 2:31 pm
by didiboy23
Hi,
sorry i wasn't clear, i talk about my remote key, i don't have steering wheel control. i wasn't using adapter, now i took one and after puting it i had a problem, the key remote work only to close and don't work for opening so i inverted the red and the yellow wire, so it worked nice and when i remove the key the headunit shutdown. but after 2 day my battery was flat with no power at all.
17474829_1222664187851768_1996808436_n.jpg
there is the diagram from the old headunit
17474829_1222664187851768_1996808436_n.jpg (47.66 KiB) Viewed 1958 times


regards

Re: iusse after installing a 27-aqtu72

Posted: Thu Mar 23, 2017 5:18 pm
by didiboy23
Hi,

here is the diagram,
Sans titre.png
Sans titre.png (14.42 KiB) Viewed 1958 times


Regards

Re: iusse after installing a 27-aqtu72

Posted: Fri Mar 24, 2017 8:56 am
by Jammy
Hi,
I discussed your issue and checked the diagram with our technician, he said that the power cable came with the unit could plug and work well with your car, you don't need to invert the yellow and red wire.
And the unit would not drain your car battery only if it shut down when the ignition key remove.
Could you please tell us if your car battery has problem and take a video about the remote key to help us check?
Hope your understanding and waiting for your reply.
Regards

Re: iusse after installing a 27-aqtu72

Posted: Sun Mar 26, 2017 7:39 am
by albertrogers1
You need to cut/disconnect/ or somehow remove the "safe" wire which is pin 5 on the black power connector. That wire feeds into the central locking system in VW/audi cars and this head unit is feeding a signal back along that wire I believe. we would need a full wiring diagram on the stereo side to see what that pin does on the stereo. once that wire is disconnected the keyless entry will work again. You'll also want to put the power wires back to the default configuration in order to prevent the battery from dying.

hope this helps,

Admin: Can we get a full wiring diagram for the headunit connections?

Re: iusse after installing a 27-aqtu72

Posted: Sun Mar 26, 2017 6:47 pm
by albertrogers1
Hey,

You have to cut/remove/disconnect the "safe" wire from the stereo (blue wire on the iso wiring adapter). That wire is tied into the central locking on vw/audi and somehow causes the key fob to not work properly.

Hope that helps!

Re: iusse after installing a 27-aqtu72

Posted: Tue Mar 28, 2017 9:40 am
by Jammy
Hi,
There is a link for you to download the wiring diagram for AQTU72. Hope some help.
https://mega.nz/#!cBsQnJqC!mX14MI1evMHg ... OlUuLeLjZs
Regards