I had this warning recently on my Mk3 2006 2.0TDCI Ghia. Interior sensors located by the front interior overhead light was replaced. I guess though this message could be activated by an untold number of alarm sys faluts. I've only had the car 2 weeks, purchased 2nd hand from a main ford dealer, the fault appeared after a long wet drive to cornwall from surrey....i hope that the fault really was the interior sensor and not related to any water ingress problems i'm reading more and more about. Hi New to this forum but have a 2007 mk111 and had the same problem...... Message appearing on the display and alarm activating for no apparent reason.... Also my wipers stopped working altogether approx 1 week after message first appearing..... Took to my local dealer in Cork Ireland and he explained to me that there is a module under the bonnet that controlls the alarm and wipers. The horn for the alarm is on the side of this module and is pointing up and water running off from the window can get blown into the horn thus filling up the module....... There is a modified alarm module, internal sensor and wiring loom to be fitted. Also when took car in service manager informed that these cars had problem with clutch, flywheel and release bearing and he replaced them also........Mine was done under warranty and works perfectly since.....thank god....bought him a few drinks for all help.. the way to recognise problem with clutch/flywheel is when start the car with door open and you hear a rattle comming from engine bay and if press clutch it dissappears and also you hear/feel a click when pressing or releasing clutch peddle...chances are you are going to get trouble sometime soon from it...... again was told by said same service manager that there is a modified clutch flywheel and release bearing for these cars...... Hope this helps Regards Ger