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[Audi A3/S3] A3 170-140 tdi can u tell the difference ?????


bully99
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[quoteThe wing mirrors have a black rim round the outside of the actual glass - around 0.75cms thick.

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Interesting, ta for that.

Is this rim the actual light sensor then? I don't know how the mirrors work exactly, whether they have their own sensors on each side or whether they just use the light sensor built into the rear view mirror.

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I've got dipping mirrors on my A3. It works in tandem with the auto dipping rear view mirror so if you turn off the dipping rear view mirror, you also turn off the side mirrors. They all use the same sensors (one on dash and one on the rear view mirror)

You can tell whether the dipping door mirrors are fitted just by looking at the mirror itself. You will see a slightly darker patch in the mirror where the LCD element is. This goes out to about 5mm from the edge of the mirror. the outer edge will look like a standard mirror. Hope that explains it confused.gif

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Cheers for the info. Regards the sensors, where's this dash one you mention? My current car has the dimming RVM but not the door mirrors and the only light sensors I've seen are in the mirror itself, one on the front at the bottom to detect light from behind, one on the back of the mirror itself and one on the "bracket" that's stuck to the screen. Not seen one on the dash.

One interesting thing is the rear headrests. In my 53-plate, the centre headrest tends to cast a shadow over the sensor on the mirror, preventing it from working a lot of the time. I've thus removed this centre headrest. I notice that the headrests have been redesigned on newer cars so they don't stick up quite as much. Obviously this helps rear visibility generally but I don't wonder whether they also did it to get round this little design flaw.

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[ QUOTE ]

Cheers for the info. Regards the sensors, where's this dash one you mention? My current car has the dimming RVM but not the door mirrors and the only light sensors I've seen are in the mirror itself, one on the front at the bottom to detect light from behind, one on the back of the mirror itself and one on the "bracket" that's stuck to the screen. Not seen one on the dash.

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On the centre of the dash, there are 2 sensors. I think one is a light sensor for the aircon and the other is a light sensor for the RVM. It looks like a little 'blob' on the top of the dash.

As you say, the other sensor is at the back of the RVM.

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