W204 Kompressor Cold Start

[benz1987]

Hi, I am driving a W204 C180 Kompressor.

During every cold start (after more than 12 hours turning off), there is a loud noise for about 30 seconds which will then die off after the engine is warm up. Mechanic initially diagnose it as supercharger issue and changed the oil in the supercharger. However noise is still there. For information, my aircon is always turned off every start.

I saw another thread on this but it did not mention the solution to it. So asking anyone out there if you have faced this issue? If yes, where should I be looking into.

Many thanks!

[Lawman]

If it is a Loud rattling sound, you may want to check your timing cam. Is a normal issue for kompressor