HVAC air quality sensor problem
Not a biggie obviously, but I do tend to run the HVAC in "auto-sensing" mode to keep out crud from exhausts in front.
VCDS threw up this: 01592 - Air Quality Sensor (G238) 57-10 - Electric Circuit Failure - Intermittent Does anyone know where this sensor is and if it's easily accessible/replaceable? |
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Its attached to the electronics box cover. Remove the trim round the box and its sitting there clipped to the side +++
http://forum.a8parts.co.uk/attachmen...1&d=1578766579 |
Often wondered what that was.
Never even knew there was an air quality sensor! How does one run the HVAC in "auto-sensing" mode? |
You press the relevant button on the HVAC controls Mark! RTFM. ;) It has a recirculating arrow with an A in it IIRC.
(It has an indicator light in it too and stays on between restarts so set and forget; I'll try to find a picture....) Quote:
I'll try replugging it and blowing out crud, mines bound to be covered in it! Obvious place really, right under the cabin air filter. :o |
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Press once to engage and leave it on. The system takes about 30 seconds to warm up from start before becoming active. When it activates by detecting pollution it has a time delay after going "clean" so won't constantly flip-flop between incoming air and recirculation. |
Just to add that our sponsors seem to have used ones cheap enough should I need one; part number is 4B0907659B and common to a few other VAG models.
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Sure its a 4B number and not 4D? The one in the A6 (4B/C5 chassis) is quite different to the D2 sensor and has a nasty habit of letting all the magic smoke out.
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I'll take a look at mine when it's daylight, dry and not blowing a hoolie! |
Curious. I just checked Etka and that is indeed the number, despite only being used in the D2!
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I can't recall if this function was there in PF models to be honest. I'm not familiar with the C5 version (is it a simpler/cheaper item?) but various references online suggest the D2 part might even have ended up in Bentleys as well as the Phaeton referenced above! |
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