Ah yes I had the same problem as that on my 2008 Exiga, I bought the sensor from Ebay (after ages of searching) and managed to fit it myself. It fixed the problem but now I have "AT temp" light flashing non stop, even on cold start. I tried resetting the TCU and also cleared the old fault code (which no longer shows after 2 years). Maybe I got some oil inside the connection inside the sump where the valve body is, and it is shorting somehow. Any ideas how to fix this?