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Rear Washer kaput

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3.9K views 12 replies 5 participants last post by  mpe  
#1 ·
In a world of blown unobtanium struts, cracked blocks, and stripped angle gear collars, this one's pretty mundane...

As stated, on my wünderwagen, the rear washer doesn't work.

-wiper works fine
-pump works fine: replaced with new, twice
-flow not obstructed: swapped tubes at the pump last time I had the bumper off to check
-VIDA returns a "rear washer relay" error, but the relay's fine: swapped the relay at the under-hood box with another of the same type, with no change in function or error message

Am I missing a fuse or another relay somewhere? Am I condemned to a dirty rear windscreen to the end of my days?
Halp pls.
 
#4 ·
Swapped the output tubes at the pump (front to rear) so turning on the front washer caused fluid to come out of the rear washer nozzle.
 
#6 · (Edited)
It does indeed! Wiper moves back and forth a couple times when the rear washer's toggled. But the pump isn't activated, so no spray.

There are one or two other relays in the under-hood fuse box of the same type as the rear washer relay. This and the "rear washer relay" error in VIDA convinced me to swap them around, but there was no change in washer behavior or error message.
 
#8 ·
Please cross reference your chassis number.

Image


It's number 6 & 8 in the picture.

Low Pressure (#6)
Part # 9169611
CH -325023

Low Pressure (#6)
Part # 30699953
CH 325024-424999

High Pressure (#8) (this might be for the rear windshield, please confirm?)
Part # 30699674
CH 425000-

There's three different configs depending on your chassis number.
 
#13 ·
Hello, did you ever solve this problem? I have exactly the same thing on my 2006 V70 desiel. ERROR CEM 8F43, no front or rear screen wash.
Can't find fuses or relays for anything apart from the 'high pressure headlamp washer - and that works. Any help would be greatly appreciated.