Hi I recently got a 06 reg VW Fox which I have found to be a great little car. last week while driving down the motor way a water hose come off which led to me jumping over fences and meeting dairy farmers in search for water. The famer gave me some water and we were on our way.... just the other day I went up to Leicester and back (160 mile round trip) on the way back the temperature gauge light up and started beeping at me when I was just a few miles from home (so had done at least 150 miles). I got out and had a look under the bonnet, the water level appeared normal. I let it cool for a while then took the lid off the water reservoir to which the water sunk, till the reservoir was almost empty I filled it up and thought to see if there was any air in the system, there was a little. So I purged it out. This has made me and my gf paranoid about the car So I plugged my laptop into the car using my elm327 adaptor in the hope it may shed some light onto the matter. It was showing the fault P0118 - Engine Coolant Temperature Circuit High Input, everything I can find about this fault code suggests it’s the sensor. But if it was just the sensor it would not explain all the other symptoms will be greatfull for you oppinions cliff