C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Anyone notice this noise when the AC is on

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Old 04-13-2005, 10:59 PM
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RJC
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Question Anyone notice this noise when the AC is on

My CLK500 has the same AC compressor as you guys, I've been hearing a buzzing/humming electric sounding noise coming from under the hood only when the AC is on, the noise is like what a neon sign sounds like and its best heard from outside the car. I had MB replace the AC compressor but the noise is back and I need to know if any of you have heard this from your car and or had it corrected.

Thanks

Last edited by RJC; 04-13-2005 at 11:38 PM.
Old 04-14-2005, 01:53 AM
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01 C200K | 02 CLK320 | 11 C250 Coupe (current)
Sorry, no info for ya.

I too am having trouble with my Aircon, but havent got a solution yet. If i find out anything ill let you know.

Goodluck Mate!
Old 04-14-2005, 03:31 PM
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yea, i have that noise to.. it's normal!
Old 04-14-2005, 10:13 PM
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Originally Posted by Sauceboy01
yea, i have that noise to.. it's normal!
I thought it might be but my 03 had no such noise and no one else here seems to have it. Did your dealer ever check it out for you and which car do you have the noise with the C or E?

I forgot to mention the noise is only after the car is driven for a half hour or more.

Thanks

Last edited by RJC; 04-14-2005 at 10:16 PM.
Old 04-14-2005, 10:15 PM
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Originally Posted by DC BENZO
Sorry, no info for ya.

I too am having trouble with my Aircon, but havent got a solution yet. If i find out anything ill let you know.

Goodluck Mate!
Thanks, do you have the same noise?
Old 04-14-2005, 11:14 PM
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maybe its not the AC, maybe its something else under the hood. when you turn the AC on other components get activated also.
Old 04-15-2005, 07:17 PM
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Its coming from the Ac compressor, something is letting too much pressure build in it.

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