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audiophool

11-09-2018 04:16 PM

Electronic module on fan shroud - 3.0i

As per subject line, there's an electronic module attached to the fan shroud that has a ~5-6 pin wiring harness connector. The harness is tied to the power connection for the front-mounted pusher fan. Anybody know what this module does? I tried to find it on RealOEM but came up empty.

TIA

80stech

11-09-2018 04:21 PM

That sounds like the "stink sensor"(AUC sensor) but I don't remember it having 5 or 6 pins.

trentcdrums

11-09-2018 04:50 PM

Got a picture for us?

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andrewwynn

11-09-2018 05:29 PM

AUC sensor is about 2" square and snaps into a cavity on the right/starboard side of the fan shroud

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wpoll

11-09-2018 06:04 PM

Yep - sounds like the AUC (module B414)...

https://www.newtis.info/tisv2/obj/CTStoZc9

The connector - X3211 - is a 4-pin.

audiophool

11-09-2018 08:15 PM

1 Attachment(s)

audiophool

11-09-2018 10:11 PM

Thanks for the info. FWIW, I've never noticed any BMW I've owned do anything like automatically switch to recirc when encountering the stench of diesel exhaust though.

andrewwynn

11-10-2018 12:44 AM

You have to have the system on (green light on button). Mine seems to work I never notice traffic exhaust smell.

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