Hello Everyone. I have a problem with my 2010 1.4 500C. After anything from 1 day to 2 weeks the dash warning light comes when driving. My local garage have been looking at it and can't work it out. The Fault code is P181D. Which they tell me it's to do with the gear natural switch/sensor. The have reset it a number of times and have now just replaced the switch/sensor and rest it again but it has just come back. They say that it will need to go to a fiat main dealer who want over £100 just to look at it. Has any one else had this problem as any help would be really appreciated. Many thanks.