Is it true??

[Len]

The problem with windscreen jets is you also have to factor in wind chill.
You can start off your journey on a cold day, say Minus 2 with them working fine but if you are on a motorway for any length of time the temp at the nozzles will be way below minus 5 perhaps even minus 10 degrees.

[F17BAD]

Think the heaters for the jets must be in the bonnet. Thats the only wiring I can see anywhere around them apart from the pump. Being in the bonnet near the actual jets wont defrost frozen water in the pipes and reservoir either, so no wonder they dont really work.

water in pipes or res should not freeze up if you have antifreeze in them (as you should)

the mozzle ends freeze over tho and this is why they are heated, elements are inside the jet part.. mine were not working but when i did my conversion we found the wires were split so they probably work now 

I hope you're not using antifreeze unless you enjoy a nice greasy windscreen  

I don't know where you guys buy your screen wash, but I'd check the temperature it goes down to. Some of the ready mixed stuff and some alleged concentrates only go to about -4C if you're lucky. I use a double concentrated that on its own goes to like -50C. 2L bottle lasts a very long time at that concentration too.

Does screenwash not have a anti freeze formula ?  maybe i was mis understood some what lol

i dont out much in becasue it can damage paint, and iv never ever had my bottle freeze up

[tweed]

 ethylene glycol 

[Len]

Also contained in some German wines!

[sychosis]

Heated washer jets on my GTI and most others

Read your handbook 

I didn't get a handbook with mine  ,  but thanks for clarifying the heated mirrors, didn't know about the washers either.

[Luke1981]

I'll hold my hands up and admit I had no idea also! You learn something new everyday! 

[Len]

Thats what we here for!