Just a quick and slightly stupid question - but is there a separate resevoir to fill for the rear washer fluid on the A4 Avant? Or, does it take from the main resevoir for the front windscreen/headlamps?
If there is a separate tank for the back, where is it?!
had same problem with mine last week, i was thinking the same, but i removed the black cover on the wiper and the jets just fall off- tried the car like this and you get a nice water fountain out the back of the car- left the jets in hot soapy water over night and job done- keep forgeting to put it back on though!