How can I disable the tyre pressure sensors on an 04 Laguna Privelige?

I have an 04 Laguna Sport tourer privelige. I have had a fault with a sensor where the valve broke and I have replaced it with a new rubber valve instead of forking out for a new sensor. Unfortunately the Tyre pressure warning light comes on and I can't switch it off. I have tried pulling the fuse as suggested but the light came back on after a period of time. Can anyone help and save me a trip to the dealer!!!!! Thanks Paul