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1997 C230 Noise from the dash?????

1K views 2 replies 3 participants last post by  Veloce300DT 
#1 ·
I have a 1997 C230 that just turned 35,000 miles yesterday and it has a noise in the center of the dash (could it be a speedo cable) it turns with the speed of the car . Any thoughts or ideas of what it may be? Thanks
 
#3 ·
I am not sure if all w202's have the speed dependent volume control or if it is just the Bose optioned models, but my right front door speakers wiring loosened up and created a high pitch buzzing that would alternate in volume when accelerating and decelerating. At first I thought it was coming from the dash, and then I tracked it down to the right front speaker. Took it apart, re-fastened the wiring and the buzzing went away. If your car has the speed dependent volume control, it might be worth it to check your speakers if you find that the speedo cable is in good order.
 
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