The local Fiat garage have had my 2008 reg Sedici 1.9 diesel in for over 2 weeks, we had a really bad storm and then it would not start as the imobiliser light was flashing, after getting it towed to the garage they have finally got back to me today and said the ECU was at fault and needed to be replaced, £1500 was the quote but I got them down to £1400( they said a new ECU was about £1000) I know they have spent quite a few hours on it finding out the problem but just let you guys on here know what to expect price wise from a main Fiat dealer if your ECU becomes knackered. I have had the car 6 years and had no problems so it is the first time paying out for anything major.