Hey, 
  
I've noticed that since it got really cold recently my headight washers haven't been functioning ... I put to down to them being frozen as it was bitterly cold then ... 
  
I've since tried them today and although it's not T-shirt weather yet, I thought it was warm enough for them to defrost if that was the case ... but still no movement from the washers .. 
  
When I press the button under I can hear the noise like it's trying to do something but that's all ...  
  
Any ideas to help diagnose the issue or even resolve it?