[zw335i]

Hello to whom this may concern, I currently have a e92 BMW 335i with an n55 engine. I've recently been hearing a weird chirping noise coming from the engine bay, so I decided to take it to get serviced at my local BMW Dealership. When taking it to service the first time, they couldn't figure out the problem(this comes at a surprise considering they are a certified BMW dealership). But when taken back for a second time; they suggested it's the power steering pump (BMW of North America), I'm not too sure how this is possible because it only does this when cold and doesn't happen when steering, and goes away when the car is warm. (The belts, pulleys both have been replaced with less than 1,000 miles on them). If you have any ideas on what it could be, all help is greatly appreciated and a happy holidays!

Here is the video of the noise:

https://youtube.com/shorts/mPfeLOJrT_g?feature=share

https://youtube.com/shorts/AkV0i7IWExo?feature=share

https://youtube.com/shorts/7mCNIuhRP_c?feature=share

[G3RM4N]

Definitely sounds like its just a bad pulley or noisy belt. Super common for them to start making more noise on the colder days. One way to find out which one, would be to lightly spray some lubricate like WD40 onto each pulley bearing one at a time, and whichever one makes the noise go away, that would be the squeaky pulley.