That's AUC sensor which is hooked on the fan cowl. That is only needed if you use recirculated air in Auto mode.

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

cheers! I couldn't find an appropriate bracket that would let it clip in but I'll use that picture as a reference

Some engine models have it at the side of the cowl. Sensor housing has the clips to attach and cowl only groove/holes.

That looks like the "nose" as I would call it. The part that clips onto the fan cowling might be what's broke. Off but it looks like the a trial sensor inside is ok. I can pull up the auc voltage on my scanner. If you can also you can confirm its working. You can just zip tie to the shroud however look for a small hole on the side of the shroud I have a feeling that it breathes though a hole that is blown through from the fan to ensure ita getting fresh not stale air

new side mirror glass replacement pieces, bought em on amazon for cheap and they look great, also took the X for a nice wash and cleaned the inside :)

Happy Monday!

That's the really strange thing I find with these sensors. They are supposed to be sniffing for hydrocarbons in the air so they can close the outside air intake. Except, they aren't exposed to fresh air, at least that I can tell. Where they mount to the cowl has no opening into the fresh air flow of the cowl. I'm not sure how these sensors are supposed to smell fresh incoming air as I don't see any way in which they are exposed to it.

It's supposed to sniff stuff coming through the radiator.

I don't know how it would do that since where it is located on the cowl and the lack of opening in the cowl where it is located it isn't exposed to air coming through the radiator that I can tell.

I don't get it either. It's in the documentation though.

Friendly reminder--This is something that should be an independent thread rather than in What did you to/for your X5 today.