Went to spray the windscreen the other day and got no fluid, so had a look at the washer bottle and discovered that it needed a top up (nearly 5 litres) tried again and still nothing have checked fuses they are okay but can't actually hear a pump running so I thinking that it may be dead. So how easy is it to swap the pump and how do you get to it (the bottle seems a long way down in the bay)?

TD6 by the way in case it makes a difference....