Thanks.
I wondered if after 5 or so tries it might work but it didn't.
Thinking back, one thing I did wrong is when the warnings flashed up willy nilly I just got impatient, then reset and tried again, what I maybe should have waitied a bit like you did.
I'll give it a try this evening when I get a chance, see if it's any different.
Many thanks for your comments.
I have wondered if locking then unlocking the doors might work, because that is basically what happened with the AA man, albeit 45 minutes apart. Crazier things have worked before [emoji23][emoji23]