The Xantia hasn't been driven much lately, today I had the battery off for a while to reset the engine ECU and afterwards I noticed the radio was behaving VERY oddly.
Among its many symptoms are:
1) At random on some stations it starts beeping instead of playing audio - I have never heard it do this before in over 3 years of ownership. It seems to happen more on some stations and comes and goes randomly. You can see what I mean in this video:
2) Sometimes trying to select a memory triggers a band scan instead of switching to the memorised station. Also seen in the video above.
3) A couple of times the display has gone full bannans:

4) I can't seem to switch it from LO to DX and have it stay there - if I press Memo it seems to go to DX but even if I save that in a memory when I recall the memory it is back to LO. Because of this it has a tendency to want to search for the station instead of playing one that is a bit weak. (I don't have the manual so don't know how you're supposed to switch DX and LO - anyone know ?)
5) The volume is jumping up and down uncontrollably, intermittently. It will be quiet one moment blasting full volume an instant later with no effect from the volume controls on either the steering wheel or the radio itself to turn it down (although mute works) and then the next moment it is quiet and the volume is controllable again. Sometimes the volume starts quiet and turns itself up over a few seconds to full volume and stays there...(faulty rotary contact on the steering wheel ? The steering wheel has not been off in my ownership though, and probably never)
6) Just generally weird behaviour where it either has a mind of its own or doesn't seem to do what you tell it to.
I've never had any trouble with this radio before today and I've already tried disconnecting the battery a couple of times and no joy. The random numbers on the display is particularly worrying and makes me think it has developed a fault.
Very annoying when we are going away on Thursday with a 4+ hour drive each way with no usable radio that either starts beeping or blasting at full volume!
Anyone else had their Series 1 Xantia radio go completely berserk like this before ?