Technical First Start Problem

[sezer]

I have a problem. My car makes this noise when it first starts in the morning in cold weather. Then, when the engine warms up, the sound stops. What could be the reason for this?

 

[The Panda Nut]

Could be the brake vacuum pump. It sounds a bit noisy, check the pipes are all in good order and connected with now leaks. Once the brakes have a full vacuum it backs off. My Bravo used to make a similar noise.