
Rear window wiper spray not working.
#1
Posted 12 January 2017 - 05:14 PM

I have a problem with my rear screen wash spray, it doesn't work but the pump can be heard working.
So far I have tried to un block the spray jets with a needle, this didn't work. I then took off the plastic boot liner and popped the hose off of the 90 degree bend that is on the wiper motor and operated the rear window wash, still no screen wash coming from the hose itself.
Needles to say I'm stumped as to where to check next, not sure of the routing the hose takes from the pump. Any ideas would I be much appreciated.
Cheers
Mark.
#2
Posted 12 January 2017 - 05:58 PM

#3
Posted 12 January 2017 - 06:03 PM

#4
Posted 12 January 2017 - 06:52 PM

#5
Posted 13 January 2017 - 05:29 PM

#6
Posted 13 January 2017 - 07:46 PM

Had a similar prob on my old S3. Took it to and independent Audi specialist who said the pump was ok but there was a blockage in the pipe and spent a whole day trying to find the blockage , even removing the door panels for access to the pipes. They still couldn't find the blockage so ended up leaving it !
On my latest RS3 the pump recently decided to stop working just before the MOT ! , they didn't say anything about it when I picked up the car but when I asked the tech he said there was a common problem with the pipes and they cleared it with the high preasure hose !
Maybe there is no filter in the pipes ??.
#7
Posted 13 January 2017 - 09:12 PM

Most winters mine packs up as the pipe freezes to the rear washer somewhere and doesn't start working until the spring thaw.
Tried everything like high washer concentrate, using hot water in the bottle but once it freezes it takes ages to clear again
#8
Posted 17 January 2017 - 09:34 AM

#9
Posted 17 January 2017 - 09:58 AM
