Before you buy a switch Dom check the power to the pump very easy to pop the plug and do this first, think I've swapped one switch ever on your platform but fitted loads of pumps, costs nothing to check, let me know if it is the pump, got a few good used in stock (it pulses by the way)
Just for info my air con fault turned out to be the switch, was around £50 from VW but i guess the pump failing is more common
Just out of curiousity, how did you manage to get this out? I've spent 3 hours just trying to get the bloody plug off and failed, never mind trying to get the sensor out
Do you go from underneath the car? I've had the bumper off headlight out the lot, and some garage in the past hasnt replaced retainer clips on teh washer bottle pipes, so I now have that leaking out now