Interior trim knocking

Driving

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Dec 3, 2014
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Your Mercedes
c180
Morning, I have a 204 c220 estate and it’s developed a knock at the back of the heater controls, sometimes it sounds like it’s near the passenger airbag but it’s certainly deep within that area..

Does anyone have any ideas what it may be? It’s quite a solid knock if you know what I mean..

Thanks in advance
 

Wighty

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Your Mercedes
W211/E320cdi/2009 and CLK200k 2009
Could be suspension components like a broken spring from the engine bay area? Sound travels in a funny way sometimes ?
 
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D

Driving

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c180
  • Thread Starter
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Could be suspension components like a broken spring from the engine bay area? Sound travels in a funny way sometimes ?
Thanks, it recently had an mot with nothing found, (if this is something that they would check up on)
 

LostKiwi

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Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
If it's a clicking sound it may be a failed heater diverter flap motor.
 

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