Windscreen washers both not working ;/

[Blueprint]

Hi guys,
2003 JCW.
Both my windscreen washers (front & rear) aren't working and I'm pretty sure they both went out at the same time.

Details: I can hear the motor buzz. Both reservoirs are full of water and don't seem to be leaking (filled them up several days ago and the level is the same today). I have pinned the jets and still nothing comes out.

I read on here a thread in which a guy dismantled his rear wiper and found it corroded and upon cleaning it up and oiling his washer worked again - i.e. it wasn't blocked rubber tubing. But I'm guessing the answer is in the detail - as both went out at once it IS blocked tubing? Where would that most likely be? Like where in the tubing? Can I fix this myself or is it a dealership visit?

I gather this is urgent, if not illegal, as if my windscreen gets dirtied and the wipers don't solve I could be in lack of vision doggy do do ;b Thnx!

[mab01uk]

This link should help:
Windscreen Washer Motor Troubleshooting - Forums

[AMcUK]

We had a similar problem with the front washers losing pressure on a MCS cabrio.
I took the washer bottle out (take off the wheel, then carefully remove the arch lining).
Discovered there was a thick black rubbery deposit on the motor inside the tank.
Disconnected the motor from the tank and flushed it through and all is good.

I was advised that this is a common issue with BMWs and they "recommend" only using their own washer detergent.

A low skill but messy job. Be careful if you disconnect the motor power and flush the tank from the top you can easily spout water into the electrical plug!

[The Nun]

They normally fur up when only water is used without any additive

[AMcUK]

Not on our car. I don't know what caused it but the tank always had plenty of wash. Often more or less neat. The plug was like a blob of soft rubber. I guess it could have been the previous owner but I'll never know.