S204 Speedometer light went crazy

[HellSheep]

Hi everyone,
I have this problem [YOUTUBE]https://youtu.be/Rzj6RMSGY7g[/YOUTUBE] https://youtu.be/Rzj6RMSGY7g for 2 days. It occurs from time to time for view sec and then it goes back to normal.
Any idea what could it be?

MB S204 C220 CDI 2009

 

[A250 Bennyboy]

Looks like a loose contact?

Sometime my cluster goes from dim to bright and back to dim for no apparent reason?

 

[HellSheep]

U mean the contact behind the speedometer

or somewhere else?