Hi Clive, The filter is by the right rear wheel. My problem turned out to be a faulty sender unit at the bottom of the filter. If you unscrew the sender unit if you have any water it should come out. If you do this and the light comes on then disconect the cables and this will stop the engime...

Happy New Year Everybody, I have a TD5 and my warning light has come on telling me that I have excessive water in the fuel. The hand book is very helpfull and sayes see dealer who being the new year is on holiday. Any thoughts would be much appreciated. David