radiator fan issue

[AlteredBe4st]

I’ve noticed my radiator fan running on and off, high and low speeds, even during cold weather on initial start it does this, does anyone have same issues and if so what have you done to fix?

[RKP]

Yes - I had this issue a while ago and the radiator fan kept going loud and quiet every few seconds. BMW had to replace the Condenser and AC Pressure Sensor. My AC was not working at the time - but you may only need to replace the AC Pressure Sensor if your AC is working fine.

[AlteredBe4st]

Ok, ty

[AlteredBe4st]

Originally Posted by RKP

Yes - I had this issue a while ago and the radiator fan kept going loud and quiet every few seconds. BMW had to replace the Condenser and AC Pressure Sensor. My AC was not working at the time - but you may only need to replace the AC Pressure Sensor if your AC is working fine.

Thank you, I figured the Ac pressure sensor was inexpensive and easily accessible so why not change it, I was also low on Freon so I filled the system and it fixed my issue with the fan, who would have thought an AC pressure switch would have a fan operating on and off with the vehicle cold but hey it fixed my issue. Thank you sir 🙏🏾

[WPJ]

Where is the AC pressure sensor located? I heard my fan running quietly after a drive.. wondering if i have the same issue?

[Dabeamerking]

Originally Posted by WPJ

Where is the AC pressure sensor located? I heard my fan running quietly after a drive.. wondering if i have the same issue?

On the AC Condensor