Any common places to look why it’s not squirting water out the rear wiper ? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

It’s probably about to squirt down the plastic trim on the inside of the car. There is a one way valve that can sometimes get clogged, under the spoiler I think. Other than that, the water goes through the middle of the motor and the seals go... motor rusts and brown water in the car. Eventually stops wiping too.

I think there is a service kit, but might be wrong.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Have you tried the black plastic cap at the end of the wiper blade it gets debris in it and blocks the holes

The one way valve was blocked on mine last year.
As a temporary repair, I replaced it with one from a garden centre intended for plant watering. It cost about 10p and is still squirting as good as original.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

I’ve got this issue. is the one way valve somewhere obvious? Will have a look later 1995 4.6 v8, green/tan (long gone)
2005 4.8iS X5, blue/black
2011 4.4 tdv8, black/black (gone)
2003 3.0d X5, Oxford green/black/manual
2021 p575 SVR, BR green/vintage tan

Check the two nozzles on the top of the wiper arm aren't clogged with dirt, using a needle to check them. Also check that the rubber water hose is secure, if it pops off you will end up with water cascading down the inside of the rear window and it collects in a pool in the interior trim panel that covers the wiper motor. How do I know this? It's just happened to me, no water on the rear wipe and then dribbling inside the car, took off the trim panel and got liberally coated with water. Went to Halfrauds and got some replacement hose and a connector. Will replace the hose and the non-return valve when the rain stops later today.

I’m pretty sure you have to slide the rear spoiler off to get to the valve etc.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Yes, I removed the spoiler to get access.
Full details are in the WM.
Non return valve is No.4 in this picture.

Click image to enlarge

No you just need to unclip the interior trim panel to get to the valve. You only need to remove the rear spoiler if you want or need to remove the wiper arm. You need to remove the wiper arm if you need to remove the entire motor unit. I've got the trim panel off and the valve is in the wash line just before it goes into the motor housing, Item 4 as per Baltic Blue's picture above.

I think the NRV is all fixable from inside of boot lid by removing the upper trim. But the spoiler has to come off to replace the motor or fix the Oring seal if it’s all leaking into the boot!

Have a search there is loads of threads with how to get it off and how to swap the seal/disassemble the motor. Did the one on my 3.6 and it was a pretty straight forward job. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

I have to hold down the rear screen wash button for around 15 seconds before any water comes out. Is this a sign that the one way valve has stopped working?

Jim

jim4244 wrote:

I have to hold down the rear screen wash button for around 15 seconds before any water comes out. Is this a sign that the one way valve has stopped working?

Jim

Wow most useful info I’ve had on a thread in here for ages thanks guys plenty to look at! Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

On mine the washer fluid had turned to a gel about 6" long. Once I pulled that out everything was fine. And after that I always flushed with water before refreshing the washer fluid. Apparently mixing different types can cause them to gel. 2016 Skoda Octavia VRS Estate
<gone>2009 FF Vogue TDV8 Buckingham Blue</gone>
<gone>2015 BMW 520D SE (not my favourite car)</gone>
<gone>2009 D3 HSE Galway Green</gone>

Just done my rear washer, removed the trim panel (just needs a firm tug to release the clips), replaced the worn popped off piece of hose and cable tied the hoses to secure the hoses on the nipples of the NVR and the motor inlet. Replaced the trim panel and all sorted. Took about 15 mins in total and now no more leaking and clean rear window.