Im gonna kick off with this one,
Sold a MK5 Mondeo to a regular customer, phoned up asking us to look at why the heated front windscreen wasn't working.
Googled it first and found several people mentioning about battery not being charged up enough, so as soon as it came in i plugged it into the diagnostic machine and noticed that battery charge was at 45% and the battery was 1145 days old. Told it the car had a new battery installed (even though we didn't change it) and then the battery charge went immediately to 78% and the heated screen started working!
I'm glad we go out mitts on it and not the main stealers, where no doubt it would have got:-
2 Hours Diagnostic
One New battery
Software update
£465 all in (guestimate)