What is the sensor in the bottom right underneath the bumper (under the front body liner thing)

[Fried_Chicken]

Mine fell out b/c my tupperware is all messed up; I picked out all the part #'s, but then the order got lost and disappeared.
I'll have to reorder, and additionally whatever that sensor is.

[Oli77]

Tupperware or temperature?

[pedro2u]

As I recall, it’s the ambient air temperature sensor. https://www.fcpeuro.com/products/bmw-ambient-temperature-sensor-uro-65816905133?ads_cmpid=21608260482&ads_adid=164927063021&ads_matchtype=&ads_network=g&ads_creative=715103588145&utm_term=&ads_targetid=pla-2338160550696&utm_campaign=&utm_source=adwords&utm_medium=ppc&ttv=2&gad_source=1&gclid=CjwKCAiAmfq6BhAsEiwAX1jsZ2cMoR4GdgdqsTKB_7V9 Wo1U0qnNBxgeVKn_qyiZa775KuYQL2xqxxoCtSoQAvD_BwE

[///Mark_D]

As I recall, it?s the ambient air temperature sensor. https://www.fcpeuro.com/products/bmw-ambient-temperature-sensor-uro-65816905133?ads_cmpid=21608260482&ads_adid=164927063021&ads_matchtype=&ads_network=g&ads_creative=715103588145&utm_term=&ads_targetid=pla-2338160550696&utm_campaign=&utm_source=adwords&utm_medium=ppc&ttv=2&gad_source=1&gclid=CjwKCAiAmfq6BhAsEiwAX1jsZ2cMoR4GdgdqsTKB_7V9 Wo1U0qnNBxgeVKn_qyiZa775KuYQL2xqxxoCtSoQAvD_BwE

That's the temp sensor that goes on the LH side for the HVAC system and temp readout in the gauge cluster. There is also a temp sensor on the RH side for the heated washer nozzles and side view mirror heating. It's a simpler thermo switch that just clicks on and off at a preset temp.

Part No: 61318370747

Item 4:
https://www.realoem.com/bmw/enUS/showparts?id=EV53-USA-08-2004-E46-BMW-330i&diagId=61_1059

[Oli77]

Wonder if the heated washer nozzle was a "Cold Weather Package" option.

[Fried_Chicken]

That's the temp sensor that goes on the LH side for the HVAC system and temp readout in the gauge cluster. There is also a temp sensor on the RH side for the heated washer nozzles and side view mirror heating. It's a simpler thermo switch that just clicks on and off at a preset temp.

Part No: 61318370747

Item 4:
https://www.realoem.com/bmw/enUS/showparts?id=EV53-USA-08-2004-E46-BMW-330i&diagId=61_1059

That's exactly it. I just got a bunch of trim pieces and that sensor is long gone. No errors or anything. Interesting that they have separate sensors for that, and I'm an idiot for letting it fly off the car as the front underpanel trims slowly disintegrated