Phoned main dealer today to get my CD/Radio tuned to my car (old car had a new ECU and CD now bleeping), they told me that I would need a diagnostic to find out what the problem is (£66 + VAT) plus then so long as its only a re-tuning matter (£67 +VAT) but if they find any other problems they would have to quote for that at the time, despite me telling them that it worked fine before new ECU and that I knew it just needed re-tuning (or whatever the tech term is) they insisted they could not do that without a diagnostic first. Surely this cannot be the case is it ?