How cold is too cold for heated windscreen wash nozzles

[spudmaster]

I have the Winter Pack on my recently acquired V90CC. Heated screen and steering wheel have been much appreciated these last few days. Washer jets have also remained 'fluid' throughout.... until this morning.

Headed out c. 8am, with temp reading as -7, and wasn't able to release any washer fluid as frozen solid. In fairness, it was pretty damned cold here last night- I live c.3 miles from where the -13 temperature was recorded.

Once I arrived at my destination, I made sure I parked up facing into the sun. When I left 3 hours later, all was well (outside temp had risen to +1).

So- question is whether there is a limit to how effective this facility is? Whilst last night was pretty extreme for the UK, just conscious that -13 is probably considered fairly mild in Sweden!

Anybody else had a problem at all?