My screenwash isn't working on rear windshield
 

Hello, this is not a major concern of mine just a little knitpicky but I'm unable to get the screenwash to spray on the rear windshield, was wondering what I could do to fix it myself and where to check, I'm a complete newbie when it comes to cars hence why I've gotten myself a 240 so I can learn and try and fix things myself, with the help of people from this forum and online.

Thanks

Worth checking the one way valve that is in the rear screen pillar- drivers side, remove the inner trim panel and look above the rear light. These can become blocked- whilst there you can test the pump by removing the water tube that runs from the same along the floor (under metal trim & carpet) place the end in a jar/tin and if water is being pumped out the valve & tailgate fitting will need cleaning- new valves are available from the likes of ebay.

Pump & Valve are the easier check first and once working flush the system through as it is quite common for old screen wash to form a scum etc.

You should find two pumps under the washer bottle for the rear & front-worth doing the front whist in there (you will also find another valve for the headlamp washers if fitted just behind the grill)
Hope it helps.
Bob.