Been having an intermitant fault with the wipers. They will sometimes stop and then if you give them a nudge will restart! On a 240 this would be the wiper motor. Before I swap it is there another more likely fault with the 300?

Just as a quick note, as your car has been having the same light dipped beam issue as Fake... and Fake did this a fortnight ago, not since, my money's down on the multipins connectors...

Did You check the connections ? If they're ok it will be the wiper motor.