Hi, thank you so much for your reply, If im honest, im bewildered by it. I would be so afraid of losing my working fob. I am of an age where good old fashioned cables made much more sense than computers.
I will digest it, think about it and go back to it a few times and if I do pluck up the courage I'll have a go, failing that I may have to elect to use a Subaru dealer not far from me but they may not have experience of an older model such as this. I also own a 21 plate Levorg but have always done the maintenance on my old forester myself. Hurts to admit I'm out of my depth occasionally but " discretion best part of valour" and all that.
Once again, many thanks for your reply and the effort you put in in doing so, sorry I'm not up to it.
Regards, Motty