Ive just had a the pump fail..I think it was due to over use during the wet weather & also they don't like an empty reservoir or sediment accumulating in the bottom of the tank. I knew it was the pump because when I operated the stick it made the wipers work but not the sprayer & they are on the same circuit..if neither work...check fuses. Was quoted £250 at the garage to replace it..so I called up ALLPARTS. they quoted £160 for a replacement.. stuff that, so I went on line. I found a company in Bradford who delivered a new pump for £9.99 ! Happy days ! I removed drivers side front wheel & undid the 2 screws of the wheel arch housing, plus another attaching it to the bumper (bit of a b8stard Philips screw underneath but it came away ok). you'll see the white plastic reservoir & the 2 pumps on the side with water tubes attached.. The white pump nearest to you is the rear wash & the black pump to its right is the windscreen washer. Tip...if you don't want to buy a new pump.. simply swap the 2 pump tubes over.. emergency repair lol.. REAR WASH & WIPERS ARE NOT IN THE MOT - fact... ! The water tubes come off easily but I had to use a big screwdriver to prise the pump out of the reservoir & its slot - built in the reservoir. Be brave. Its held in by a rubber gasket. disconnect the electrical connector using a flat screwdriver to lift the side tab. Shoved in new pump having connected the electric plug & water tube.. had to get a bit rough here.. but a bit of Vaseline helped. The grommets holding the Plastic engine undercover are crap.. I had to use a few Tie Wraps to put it back in place...! Hey presto...it works... make sure you have a tray to collect the wash water tho.. & £240 quid..IN MY POCKET ... SAVED...!