That's interesting - thanks.
'Er indoors also has a 2007 V70, and that exhibits exactly the same fault - neither sat nav has ever retained it's user memory. I spoke with Volvo a couple of years ago and, predictably, they said it was not repairable but I could have a replacement for c£2,000. Yeah - right.
I'll have to open it up and try and find the battery you refer to Simon - your diagnosis makes perfect sense.
Anyone with electronics expertise out there able to guide me as to visual recognition of the component I am looking for?
Cheers
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