W203 Loud Tapping Noise Thru Central Dash Airvent

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Stuart_C320

New Member
Joined
Sep 14, 2005
Messages
12
Car
C320 AMG Sport Pack
Hi Folks,

My W203 C320 is making the strangest snapping noise on start-up. The noise appears to be from the central airvents just the command unit. The noise can only be described as snapping or tapping, but it is very loud, like someone bending a plastic ruler and letting it slap against a hard surface. This continues for a few minutes before ceasing. The snapping is very irregular, at different intervals - could have sworn a week or so ago it was there but much quieter. Any suggestions?

Cheers!

Stuart
 
Only guessing, trouble with the recirculation flaps?
 

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