identify my radio

[myfirstpicasso]

my car Citroen Grand C4 Picasso 2.0 HDi 165 FAP has a weird radio . Could you guys help me identify it .

So this radio :
- has USB port which can play MP3s
- it also has a AUX input. (aux and usb port located between the seats not on radio face)
- it also has bluetooth. I can connect the phone and output audio through bluetooth to car stereo. But the microphone does not work . I suppose it has a microphone but it's faulty.


In order to identify it i took it out of the din slot and i saw the codes : 96766657xt00 rd4n1m-03 A2C53424335.

So is this a RD4 , RD43 , RD45 or anything else ?

Asking because the internet or nowadays GPTs say that RD4 does not have bluetooth or USB.

[myfirstpicasso]

[xantia_v6]

I think that you have a basic RD4 (single antenna) with an external bluetooth telephone module.

[myfirstpicasso]

are the external USB and AUX ports normal/possible for RD4 ?

[myfirstpicasso]

Is the USB cable the white connector on the right side ?
What is the black thing in the middle going nowhere (seen it before but i'm newbie with electronics) ?

There seems to be an additional square white connector inserted in the big black square connector on the left side . Is this normal or is it an aftermarket job ?

[xantia_v6]

There are pinouts for RD4 and RD45 here: viewtopic.php?p=725847#p725847

[wheeler]

What is the black thing in the middle going nowhere (seen it before but i'm newbie with electronics) ?

This is just a locating peg, stops the radio unit dropping down, if you look in the DIN hold you will see the hole it mates into.

[myfirstpicasso]

so in the end it's just an RD4 that has USB, AUX and Bluetooth ?

[shtu]

Easy check for future reference, look at the RH button beside the CD slot.

TA button = RD45
TA / PTY button = RD4