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Current ? (Thinking GLC SUV) Previous 1998 E320, 2007 E320 Bluetec, 2008 320ML CDI
2,544 Posts
Describe conditions when you recorded.
It sounded like engine was idling. Yes?
Engine warm?
A/C engaged?
No steering inputs during recording?
All fluids at correct levels?
Does it make the same sound with the serpentine belt removed? (You can operate the engine for several minutes with the belt removed - stationary only. This helps isolate noises that might be caused by pulleys or other rotating items on the front of the engine).
How many KMs on vehicle?

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