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S550 4matic Engine knocking tapping noise SOLVE THE MYSTERY

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Old 10-23-2016, 11:08 PM
  #26  
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2003 CL 600
Originally Posted by bigkev21
Mine sounds like coke bottles rattling, like the ring toss game. It sounds like it's coming from the center directly behind the dash, under the Command. It gets louder when the wind is blowing hard outside. May be the same thing?
Sounds more a/c related.
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Old 10-23-2016, 11:20 PM
  #27  
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W140 Mercedes S350, W221 S550 sport
You can hear it outside when the car is idling. It's a little embarssing when you pull up to to people and it's not whisper quiet like most other luxury cars.
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