Hopefully someone can help me. I used the washer and wiper on the REAR windscreen on Saturday and then went for a drive but the wiper was stil going with the stalk in the OFF position, and resting in the middle of the screen. When I stopped, I wiggled it a bit and started up again but it was still going – sometimes 1 wipe stroke, sometimes 3 strokes and no regular gap between strokes – but at least it comes to rest in the normal place now.

After a bit of research on here, it sounds like it might be the positioning switch motor. Does this sound right? If it is this, how do I go about replacing it, or even better, fixing it. I found fixes for the front wipers, but not the rear. Any help much appreciated.

There's been a few previous postings about this. I had the same problem and it was down to the rear washer feed going through the motor casing having a leak. Once the thing fills the motor with water, the motor runs contiuously. The trick is to take off the plastic trim on the boot door and remove the 7 or so torx screws holding the plate on the wiper motor. You will probably get the water running out as you undo it. Clean and grease the exposed gearbox and find a way to seal the water feed. I used fernox plumbing seal from b&q and it's still ok after 3 months

Cheers Magic. I'll have a look at the weekend. I did have the washer on for longer than usual due to extreme windscreen dirt so maybe it popped something :confused: Anyway, all part of the learning curve

Just as an update to this, I went out today and the rear wiper was behaving itself so I guess last weekend I'd flooded the motor with my over-exuberant washing, which made the switch go nuts. :eek:

Must have dried out over the week but obviously I still need to have a look at the motor and make sure the pipe hasn't split for next time I use the washer