Ive checked to see if the pipe has come of by looking under the car, all fine. Bottle still full.

I haven't checked blocked pipes or jets due to weather and because i've never touched the screen bottle until today. I did however wash the car yesterday and they sprayed fine. Strange that something would stop working without driving it.

Warranty lasts for 1 year so if its not doing as it should when i drive the car next i'll be booking it in at the local dealership for fix/inspection.