This morning there was a fairly thick frost, and the car had been parked outside overnight. I pushed the headlamp wash button without thinking, when it didn't spray I gulped and hoped there was no damage. This evening driving home I hit the button again to test if there was any damage and they sprayed, but stopped on the third push. Having tried again when I got home, the stalks are not popping out when the button is pushed. When the button is pushed I can hear a motor running behind the nearside (passenger side) headlamp, but can't see any sign of water dripping squirting behind the bumper, but the weather was awful so I didn't try for long. Any thoughts on what to check? If it's bumper-off or headlamp-out job then I may need to book it in to get someone else too look which could make this an expensive and unnecessary fix.