Hi
This does seem a lot of money when it still isn’t fixed and looks as though you’ve been charged an hour’s labour time. I work for the AA as a Technical Specialist and several members have complained about similar charges. Service Departments at garages have to allocate work so they cover a mechanic’s time – there isn’t any slack for free diagnostic work. It also seems much more difficult to quickly diagnose faults now, however you’d hope a dealer would be able to give you a better idea of the likely cause of the fault. Franchised dealer staff get lots of training on the manufacturers’ individual models and customers should benefit from that increased knowledge.