Late yesterday afternoon while dry, I went and removed Relay 109 after some more reading about it and other reasons for the potential failures.
Seems Relay 109 is a really big culprit in the VW scene for letting people down, and causing intermittent break downs, limp modes and various issues, that then resolve once replaced.
So I pulled it and went down to Euro Carparts.
Price quoted by the really helpful lady behind the counter, an eye watering £28.00
Knowing that a Chinese version would take up to 3 weeks and more to arrive, we looked at other parts suppliers, not much better news, then I checked my Amazon app and came up with a variety of prices.
I do not have Amazon Prime as I am not a very regular user, maybe 5 transactions a year, so £8.00 per month to save the £5.00 shipping fee makes not a lot of sense to me on a £10.00 part.
To the rescue comes @craigrk whose home runs on Amazon products, and Ienvy him for it, but not enough to justify his lifestyle.
So he placed the order on my behalf, hopefully delivered later today.
Prices vary widely on here as well.
Ordered.
While I was there, I also bought a tin of electrical contact cleaner for when I go in under the hood and under the dash later.
£5.39 hopefully well spent.
Next job is to dress warmly, including shoes and then head out and see what I can find under the hood/bonnet.
Wish me luck.