ML 350 has 1 second strange noise right after cold start

I have Mercedes ML350 (2011) and this winter I noticed that it started making weird noise right after cold start, I’m almost sure that this isn’t timing chain (I know how broken timing chain sounds).

Here’s the video where you can here that noise: https://www.youtube.com/watch?v=bt85i0mp4Lo

Any idea what’s the issue?