It was checked by Toyota when it came into NZ last year in August, and I've seen that report - no known problems. I've heard bad things about their checks anyway - that they don't do a better job than the AA, and they charge the same price? The AA check is already booked, so I can't back out of that - hmm, not sure if I'd want to ask him to get another one done!
I know that the CD player has the jamming problem - he's told me about that, but he doesn't know what the Error 3 is (unlike me, having done research!), so I may be able to fix it. I'm not too worried as I am likely to replace it with an aftermarket double DIN unit anyway.
Cheers for the A/C tip - I'll ask him about that and check it when I do my final inspection. :-]