XSeries-forum

My auto wipers stopped working on the X and i noticed there were air bubbles between the sensor and the windscreen so i removed the sensor and cleaned up the screen and the sensor,can anybody tell me how to test it before i try to stick it back on the screen, if anyone has done this can you let me know where i can get the sticky pads from ,
i have seen them for sale on Ebay but now i cant find them when i do a search,

Get a friend to spray the windscreen while you sit in the car holding the sensor in the correct place

Sounds good will give it a try,

[quote=""malc1950""]Sounds good will give it a try,[/quote]

give it a try no harm but i wouldn't count on it working.

the sensor works on the principle of bouncing off a ray of light sent off at a 45 degree angle, which then is received at the other end of the sensor, by way of refraction. when there's water on the surface it directs parts of that light elsewhere, reducing the amount of light received by the receiver end, that triggers the wiper (good old physics of how a ray of light passes through glass prisms, water if u remember from school)

when u hold the sensor next to the glass u can't prevent a thin layer of air between the sensor and the glass, and that can impact refraction.

As above. Unfortunately the only usual fix for this is a new windscreen. The bond is created via an optically clear adhesive, not a pad, applied under vacuum at the time of manufacture I'm told.......something to do with keeping the bubbles out I suppose.

As above, I looked over the invoices for my car that I tracked down from BMW, and it looks like in 2005 it went in for a rain sensor repair, and a complete new windscreen was fitted!

There was a link floating around how to DIY the job with silicone

yes i remember seeing a DIY fix with silicone and also a fix with a pad

Like this one perhaps....?

http://forum.e46fanatics.com/showthread.php?t=615032

That's the exact one I was on about

I have seen the DIY with silicon but i have also seen a DIY with a sticky pad and as i remember they said it was better to use for removing all the air bubbles,
I did see the pads for sale on ebay a while ago but now i cant find them,

If you can find the sticky pad post and share the link that would be good

Well, you could try this.....found via Google. Not sure if it's what you meant. There's also a reference to it in the E46 link above too.

http://www.gordonglassusa.com/item/RSK2 ... K2296.html