transmission oil temp light

[colintandy]

hi fellas and ladies can anybody help
i have a 200tdi disco automatic and today the oil transmission light came on out of the blue as i was in slow traffic at time and had just taken a left turn previouse to that a normal gentle drive (had wife in car)50-60mph
 when got home i checked the oil in gearbox seems plenty and was only changed a few weeks ago and is not hot either i was expecting it hot but its defently normal temp  have no leaks and all seems to run just fine any clues  coud it be the transfer box overheating it felt hot when i looked but id only just stoped her but was hot any body know where to start looking could it be electrical where would the temp light goto on boxes i dont belive i have lost any fluids gonna double check when cooled down but cant see none on floor
regards colin

[disco blue]

hi mines a v8 same problem changed sensor in oil cooler pipe at front on rad been fine since  they dont dirt from off roading

[colintandy]

high disco blue thanks for that is it in the same position as mine looking down from the front of the passenger side bonnet wing it sits on the oil cooler pipe just under the fan belts tried cleaning my contacts ect but still same . is yours wired also as a check bulb that comes on with handbrake warning light but should if working properly disapears when handbrake gets released took me ages to work out and then there it was in the manule that was sat in car that i decided to look at after an hour   is it easy to re-fit  looks like its sat on a nut and has a plastic/rubber sleeve
regards colin