I have a 2000 E 320 with 90k on it. There is an annoying buzzing coming from the dash. It is coming from the drivers side and sounds like it is coming from the instrument cluster.

Even when the car is in neutral, and I accellerate, you can hear the little buzz around 3k rpms.

What could this be? It is very loud and annoying when driving and varies with accelleration. Depending on where the petal is I hear the buzz.

Anything I can check?

Thanks guys!