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X5 E53 (1999 - 2006)
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  #1  
Old 04-18-2015, 05:02 PM
rwdudley rwdudley is offline
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Location: ohio
 
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Mein Auto: X5
05 x5 auc

Where exactly can one find the AUC sensor box on a 2005 X5. I wish to clean it
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  #2  
Old 04-18-2015, 07:03 PM
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QSilver7 QSilver7 is offline
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Mein Auto: 1997 740iL / 2006 X5 4.4
X5 3.0, 4.4, or 4.8is? Each of those models have different engines so components may be in slightly different areas. But most times it's somewhere around the radiator shroud so that air flowing thru the engine bay also flows thru the AUC sensor.
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Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg
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Old 04-18-2015, 07:07 PM
rwdudley rwdudley is offline
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Location: ohio
 
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Mein Auto: X5
I have a 4.4 . The reason I ask is that when I turn on my AC I am getting a weird smell. I was advised to check this sensor and clean it as well as change the interior cabin filter and perhaps even spray disinfectant into the ducts if the problem persists. I figured I would inquire on here before I do anything else
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Old 04-19-2015, 08:10 AM
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QSilver7 QSilver7 is offline
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Mein Auto: 1997 740iL / 2006 X5 4.4
A funky smell when the AC is turned on is 99% more likely to come from bacteria/mold in the ducts or on the condenser from running the AC and parking the car in a dark garage (for example)...or in a condition that allows for the growth of mold/bacteria.

This topic has been discussed enough (across many car platforms) that you should be able to find some tips doing a simple internet search.

The AUC sensor only detects gases/pollutants in the air...that if the AUC is set to AUTO mode....will select auto recirculate until the exterior air conditions get better. The AUC sensor will not cause a funky smell (other than it has selected auto recirculate and the funk is coming from bacteria/mold in your air ducts)...but again, that's not the AUC sensor causing the issue.

Here's some info about AUC that should help you understand what it does:



__________________
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg

Last edited by QSilver7; 04-20-2015 at 11:14 AM.
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