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D2 - Engine Bay Everything under the bonnet

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  #1  
Old 19th May 2020, 02:52 PM
Ronin Ronin is offline
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Default What is this phone holder looking thing under the bonnet?

The part number appears to be 480907659 but i can't find any info on it
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Old 19th May 2020, 03:06 PM
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I have a feeling that it's some kind of air quality sensor? I seem to remember puzzling over that box when I was having a nose at my TCU (transmission control unit).
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Old 19th May 2020, 03:11 PM
Ronin Ronin is offline
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It's strange, its just dangles in there not and there doesn't seem to be a dedicated place for it
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Old 19th May 2020, 03:16 PM
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The "8" should be a "B"

https://www.ebay.co.uk/itm/Audi-A8-D...-/132200997709
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Old 19th May 2020, 03:23 PM
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It is held in place by one of the ECU box lid screws - the one to the right in your second pic.
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Old 19th May 2020, 03:26 PM
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Quote:
Originally Posted by briang9 View Post
Thanks for this. It looks like its totally out of place and should be somewhere near the vents. Another bodge for me to fix yay!
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Old 19th May 2020, 03:39 PM
MikkiJayne MikkiJayne is offline
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Its in exactly the right place in the car. Etka is showing it with other HVAC sensors, not its actual position. Andrew had a thread on it a little while ago, maybe with pics of it attached to the ECU box lid.
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Old 19th May 2020, 05:45 PM
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It's in the right place indeed. I just opened mine up and cleaned it, without touching the sensor surfaces!

This was the thread: http://forum.a8parts.co.uk/showthread.php?t=15437
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Old 19th May 2020, 06:37 PM
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Mine was left like in the first pic, thanks for that link now i know howto fit it properly.
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Old 20th May 2020, 01:42 PM
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Its the air quality sensor I believe - Used to determine whether or not to auto recirc. It should be sat in the path of the inflowing air to the blower motor....
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