Hi i have this car and my sensor went funny and i had to replace it and found it after about 5 mins.
If you look under your car at the front on the drivers side you can see it just there and its either a 8 or 10 mm.
You will see a metal pan which is your oil sump and to the drivers side of that is your crank. (it's like a cog really)
and if you look behind that you will see you sensor.
its about the size of a AA bettery with a lead coming from it.
hope this helps if not write back and i will upload a video to youtube
Simon Hall
May 2009