Hello guys I have a 2005 E55 with 128k miles. I have an odd tick when my car is fully warmed up that comes and goes. I don’t really know what could be the cause or if it’s normal for these cars to make this sound. It’ll be there for 5-10 seconds sometimes then it’ll go away. And then come back again. I’m thinking it’s normal but I just want to confirm.

https://youtube.com/shorts/OjXdGrKJJ1w?si=ECHZslQDmQ_iDVRh

Towards the end I had someone rev it up but it went away as it was revving. It does go up with the rev when it’s there.

https://youtube.com/shorts/qwh6L8jV1uI?si=moAPNzopmZtC6sqO

In this video it also went away at the end.
(Sorry I don’t know why the videos aren’t showing up as clickable link on the forum please copy and paste into search engine)