Here's how I fixed my windscreen washer jet which graually lost pressure until they ended up dribbling down the bonnet.

First park car with the wheels locked to left.
This is to get at the screws of the passenger side front wheelarch liner in order to access the washer tank.



Remove at least 2 screws.
Lock wheels to the right



Remove the bottom 2 outermost screws from the wheel arch liner.
I only needed to remove 4 screws in total
Carefully pull the wheelarch liner out, you should see this.



Slide the pump out. If the tank is full water will gush out when you do this.



A rubber grommet with a plastic sieve attached sits directly beneath where you removed the pump.
Remove this very carefully to avoid the sieve falling into the tank.





This gromet was covered with slimy algae. Clean it with a tooth brush and bleach.

This is the second time I have had to fix the washer jets, 1st time round I simply reassembled, the fix lasted only 6 month before the algae blocked the sieve again.

This time I blocked the tank using the grommet and a piece of plastic.







I then filled the blocked tank with bleach solution, left it for an hour removed the gromet and drained the tank.
I rinsed the tank to get rid of the algae and any residual bleach, by repeating this proceedure 5 times with tap water.
BEWARE OF GETTING BLEACH ON YOUR CAR PAINTWORK - RINSE THE TANK THOROUGHLY BEFORE REATTACHING THE PUMP.

 

Bookmarking this page! got it done under warranty this time, but it'll be out of warranty next time it clogs up. Cheers!

 

well done.great to see photos.

 

great post,thanks
i had the same problem on my 55 E60,followed your instructions and problem solved

thanks

 

Check out this discussion also.

https://5series.net/forums/topic/727...washer__st__15

 

Just followed this tutorial... WORKS GREAT....
Thanks a lot...

 

Great DIY write-up

 

Thanks for this.#


I have a problem however - i dropped the sieve into the tank when removing the grommet. Any ideas about what I can do?

 

I must add that I followed this proceudre last night and it worked a treat. The only difference I had was that instead of screws, I had to undo nuts to remove the cover over the bottle. The white plastic thing was covered in gunk - cleaned it, replaced, washers are like new.

 

Just worked a treat for me today - my 5 series is still under warranty, and Rybrook Warwick wanted to charge me £157 plus VAT quoting 1.5 hrs labour, as it wasn't down to a faulty part- I did it in 25 minutes, following your instructions, and I'm no mechanic.

I was quite angry at having to do it myself, particularly as they said that they "come across it quite a lot" - surely that indicates a design fault.

To the guy who dropped his grommet in the tank, how about sucking it out with a wet and dry vacuum? - just a thought...