High pitch sound

Tiny
ADUNBAR
  • 2000 MERCEDES BENZ S430
  • V8
  • AWD
  • 196,000 MILES

Hi,
I hear this high pitch sound when I stop at the light or sit in traffic for a period of time. I also hear it when I put the AC on. Any reason?

Do you
have the same problem?
Yes
No
Wednesday, July 6th, 2011 AT 1:16 AM

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