That pesky C5 X7 radio again!

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Peter.N.
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That pesky C5 X7 radio again!

Post by Peter.N. »

When my wife returned home the morning she said 'the radio isn't working' . When I checked not only was the radio not working but the satnav screen was blank. There is a little button labelled 'SOS' to the bottom left of the radio and the light by it was permanently on,. Is this another case of operator error or do I have a fault?

I haven't checked any fuses yet but just wondered if there was any obvious reason for this.

Thanks

Peter
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Re: That pesky C5 X7 radio again!

Post by GiveMeABreak »

Maybe not human error this time Peter. If the SOS light is on permanently and if fault code FD87 is present in Diagbox, then it's a replacement of the ITU (Independent Telematic Unit) (after tests to confirm).

The ITU is separate from the RT4 Head Unit, but is connected to it in various ways. It is situated directly above the multifunction display (hidden by the fascia), so it's not hard to get to. It is a rectangular module that provides autonomous independent emergency services calling in the event of the airbags being triggered and geo-location positioning to the emergency services.
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Re: That pesky C5 X7 radio again!

Post by Peter.N. »

Thanks Marc, I will investigate in due course.

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Re: That pesky C5 X7 radio again!

Post by GiveMeABreak »

Bear in mind if replacing, it will need certain parameters coding to the unit Peter.
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Re: That pesky C5 X7 radio again!

Post by Peter.N. »

Will everything else work with the unit disconnected?

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Re: That pesky C5 X7 radio again!

Post by GiveMeABreak »

I'm not sure you can just disconnect it Peter as IIRC these units can be wired into the system in various ways - i.e the front speakers, the microphone in the ceiling, the CAN connection to the head unit - so if disconnecting it, you may prevent other parts working - but I can't be sure. I had a different services module on mine that was heavily integrated into the vehicle, but never had an issue with it. I'm wondering if it could be something else given that the RT4 unit has gone dead (as I think you said in your earlier post). If there is an issue with the Head unit itself, then it may be causing the associated problem with the telematics unit - given that it is integrated. I wouldn't of expected the RT4 do be disabled by the telematics unit - it should still operate, play the radio, navigate etc. It may be a case of chicken ang egg Peter....
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Re: That pesky C5 X7 radio again!

Post by Peter.N. »

Thanks Marc, the story of my life! I will have a play when I get 5 minutes. Just another thing, the reversing lights on these cars are as good as useless is there anything I can do to improve them, they appear to be LEDs.

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Re: That pesky C5 X7 radio again!

Post by GiveMeABreak »

HI, they reversing lights are not actually LEDs peter, the lens is made to give that impression. The bulb is actually an H21W. A word of caution though. I did upgrade mine to an LED for the same reason using, however I kept getting people telling me it was flashing when reversing. This was even with not so cheap LED upgrades that were supposed to have load resistors built in. Later, I also found that the same problem was filling thge BSI log up with reversing light circuit errors!

So if you are considering an LED upgrade, make sure you get some decent ones with load resistors and get Mrs Peter to periodically check they don't flash when engaging.

Here's a link to pictures in a previous thread Peter:

viewtopic.php?p=595126#p595126
Peter.N.
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Re: That pesky C5 X7 radio again!

Post by Peter.N. »

Thanks for that Marc, I'm glad I'm not the only one who can't see where they are going backwards.

Peter