04,
After all of the evidence SW has cited, have you ever tried to turn on the ECT Snow switch prior to starting your car? If you haven't, I suggest you do. The switch doesn't work with the car off. If you turn it on while the car is running and then turn the car off, the ECT turns off. The only way you know it is on is by the indicator light in the speedo. There needs to be a little common sense applied here, despit the owner's manual confusion.