Hi, did you get this problem sorted at all? If you didnt, then its an easy fix. Open the bonnet and, and find the washer bottle. Next to that, bolted to the drivers side wing, you will find a black box. Unplug the box, and hey presto, the fault will vanish. It will also cure a few other faults, such as indicators that miss a click, rear wipers wiping on their own, reversing sensors firing up when your driving forward. The box is the HID translator module. All it does is let the ECU know when a headlight bulbs blows. If you can live without that function then you can cure all the rest!! The HID module develops a fault, and effects lots of other things down the line.