Radio frequency problem RT4

[Tonyfire]

Hi,
i was wondering if anybody can help me with a problem with my radio (RT4 firmware 8.20) since i upgraded to the latest firmware the radio signal is almost non existent and when i press the button to scan i get nothing. I've had the radio out and all the connections are there except the grey one has nothing connected to it (what is it for?) There is the same vehicle at work with the same radio and the signal is perfect so i'm baffled, should i downgrade to version 8.11?also;

The RDS is greyed out even tho in settings it is set as activated...any ideas anybody?

Thanks in advanced Tony

[jmkent]

The cable for the grey one hasn't come out by any chance and dropped down behind all the heater control panel?? I believe my RD4 has two connectors which look like they are something to do with the aerial.

RDS might be greyed out if its not receiving a signal in order for RDS to function.

[Tonyfire]

Hi JMKent

i have had the radio out and cannot find any cable that goes into the grey port...is the grey port another aerial connection?

[jmkent]

I'm not 100%, but I'm pretty sure mine has both cables plugged in - trying to Google a diagram

[Karl68s]

I have an aerial in the grey port.

[m3mpower]

Originally Posted by Tonyfire

Hi JMKent

i have had the radio out and cannot find any cable that goes into the grey port...is the grey port another aerial connection?

Grey aerial connection is the Bi-tuner, this is to improve the signal in poor areas...such as mountains....etc

If your car came originally fitted with RT4, it should be connected
If you fitted RT4 yourself or by previous keeper, the connection will not be there...

[Tonyfire]

The RT4 is the original unit fitted, i will take it out again and dig deeper athough the last time i looked all the cables that go into the coloured connections are all strapped together

[Tonyfire]

Could not find any cable to connect to the grey connector, however, whilst routing around i found a green connector not connected to anything which looks something like this (see attached picture)

Any ideas?

Cheers
Tony

[m3mpower]

Originally Posted by Tonyfire

Could not find any cable to connect to the grey connector, however, whilst routing around i found a green connector not connected to anything which looks something like this (see attached picture)

Any ideas?

Cheers
Tony

That is the GSM connector, that connects to the red round connector behind the RT4

[Tonyfire]

Originally Posted by m3mpower

That is the GSM connector, that connects to the red round connector behind the RT4

Hi m3mpower, now i'm really confused because there is a connection to the red port, might the connection have come adrift at some point?

And by GSM you mean the sat nav?

apologies for my ignorance