faulty water level switch

[herdsman]

where is low water level switch on 2002 vectra

[wizard]

What do you mean by switch?

Fuse switch? Or the sensor inside the bottle?

If you mean fuse, its directly infront of the bonnet release lever underneath your steering wheel.

Pull down the fuse board and look at the guide.

[bruce5755]

You should find it in the Header Tank, (where you put the water in) look for some wires coming out of the tank underneath. If you look in the top of the tank with the lid off, you will see a round white piece of plasticy thingy which slides up and down the sensor housing.