AUX Citroen c5 RD4 radio 2009

This unit is the RD4 or RD45 system, made by Continental.
Usually standard equipment unless another system is specified as an option. There are Single & Dual Tuner versions. RD45 features over the RD4: The RD45 has USB connectivity & integrated Bluetooth module supporting Phone & Audio Streaming.

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amigo
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AUX Citroen c5 RD4 radio 2009

Post by amigo »

Hi..

I got a problem i hope someone can help me with.

I have rd4 radio in my c5 and i want to put a AUX to 3.5mm cable in the radio but there is already the a cable in the aux port to the bluetooth in the car. i want to put an extra aux in so i can play spotify from my phone, the radio dont work with bluetooth audio :( but i dont want to loose the bulid in telephone system with bluetooth and sterring wheel functions , i have tried to open AUX 2 in diagbox but it will not allow.

Is there a great solution out there or any there have a fix that will work?



:?: :?:
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GiveMeABreak
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Re: AUX Citroen c5 RD4 radio 2009

Post by GiveMeABreak »

Upgrade your RD4 to RD45....

The RD4 units can only operate Bluetooth with the optional Connecting Box / Nomad / Hands Free unit.
The later RD45 have integrated Bluetooth and Bluetooth Audio streaming.

You can't get a second AUX input - so forget that.

So consider an RD45 Head Unit and compatible Multifunction EMF 'C' Screen.

You will have to disconnect the exisitng hands free unit and possibly wire in the microphone lead direct to the Quadlock connection so it bypasses the hands free kit.
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mickthemaverick
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Re: AUX Citroen c5 RD4 radio 2009

Post by mickthemaverick »

If you get an adapter like the one on ebay, link below, it will allow you to plug both in at the same time but I expect you may suffer conflict issues if you are listening to music and an incoming call arrives. However it is so cheap I think it might be worth a try!! :-D
https://www.ebay.co.uk/itm/122974457061 ... SwPGpaiaNl
amigo
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Re: AUX Citroen c5 RD4 radio 2009

Post by amigo »

Thanks alot mate, do you have any diagram or know which wire from mic to the hanfree unit? and where is that unit handfree mounted?
GiveMeABreak wrote:
10 May 2021, 16:22
Upgrade your RD4 to RD45....

The RD4 units can only operate Bluetooth with the optional Connecting Box / Nomad / Hands Free unit.
The later RD45 have integrated Bluetooth and Bluetooth Audio streaming.

You can't get a second AUX input - so forget that.

So consider an RD45 Head Unit and compatible Multifunction EMF 'C' Screen.

You will have to disconnect the exisitng hands free unit and possibly wire in the microphone lead direct to the Quadlock connection so it bypasses the hands free kit.
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GiveMeABreak
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Re: AUX Citroen c5 RD4 radio 2009

Post by GiveMeABreak »

Pop your VIN up (auto masked) so I can check out the wiring diagram for your vehicle.
amigo
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Re: AUX Citroen c5 RD4 radio 2009

Post by amigo »

VF7**************[VIN obfuscated, can be read by forum staff]

I think i already have the EMF c screen? or am i incorrect?
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GiveMeABreak
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Re: AUX Citroen c5 RD4 radio 2009

Post by GiveMeABreak »

Here you go.

Yes you have the EMF 'C' screen, but that 's not always a guarantee it will work - the software ahs to be of a high enough level - but as yours is a 2009 model fingers crossed.

Image

8492 is the Hands Free Kit
8482 is the microphone.

What tends to happen is the microphone wiring from the ceiling disappears into the loom and will come out near the hands free kit and from there to the head unit. Most people give up as it's hard to get to and just wire it in directly at the back of the head unit.

Microphone Wiring:
8487: telephone hands-free input + signal
8488 : Telephone microphone earth input

8462 : audio + hands-free kit
8463 : audio - hands-free kit

As for location, see my post here: with illustrations:

viewtopic.php?p=610726#p610726
amigo
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Re: AUX Citroen c5 RD4 radio 2009

Post by amigo »

thanks alot, so i need to cut these wire at the plug on the hand-free kit and than solder them together with the hand-free kit cable not connected afterward? or am i totally wrong ?

Solder 1 8487: telephone hands-free input + signal 8462 : audio + hands-free kit
Solder 2 8488 : Telephone microphone earth input 8463 : audio - hands-free kit

-----
Do you know which software version the display need? maybe i could check it with diagbox before buying :)
amigo
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Re: AUX Citroen c5 RD4 radio 2009

Post by amigo »

OR
Do i run a new cable from the new rd45 headunit to old mic with a cable like this https://www.aliexpress.com/item/32811835971.html ?
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xantia_v6
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Re: AUX Citroen c5 RD4 radio 2009

Post by xantia_v6 »

amigo wrote:
10 May 2021, 19:25
OR
Do i run a new cable from the new rd45 headunit to old mic with a cable like this https://www.aliexpress.com/item/32811835971.html ?
That is the route I took, but as I was also buying the RD45, USB cable and microphone from the same vendor, it was an easy decision to make.

I found that I never used the 3.5mm jack, getting all my music via USB stick or Bluetooth, so disabled the 3.5 input to simplify the mode selection.
amigo
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Re: AUX Citroen c5 RD4 radio 2009

Post by amigo »

The usb port on the rd45 is that an input usb ect or a charge usb, do it give an USB source in the RD45, or do it work both ways?
xantia_v6 wrote:
10 May 2021, 20:42
amigo wrote:
10 May 2021, 19:25
OR
Do i run a new cable from the new rd45 headunit to old mic with a cable like this https://www.aliexpress.com/item/32811835971.html ?
That is the route I took, but as I was also buying the RD45, USB cable and microphone from the same vendor, it was an easy decision to make.

I found that I never used the 3.5mm jack, getting all my music via USB stick or Bluetooth, so disabled the 3.5 input to simplify the mode selection.
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xantia_v6
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Re: AUX Citroen c5 RD4 radio 2009

Post by xantia_v6 »

I have a 2Gb memory stick plugged into the USB socket (which I mounted in the glovebox), with some favorite mp3 tracks sorted into folders by album or artist. It will provide charging current, but only at 450mA I think.