Windcreen Washers Not Working (Lights and Rear are Working)
 

My 2011 A6 Estate windscreen washers aren't working. Situation is:

• Water tank is full
• Rear windscreen sprayers working fine
• Front lights sprayers working fine

I've disconnected a pipe from one of the two plastic sprayers in the bonnet - no water coming out.

I assume there is one pump for all the washers and so the pump isn't the problem??

Help!