E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

dash board hums

Old Apr 18, 2006 | 03:13 PM
  #1  
kwb210's Avatar
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From: Washington, the State
1993 300CE Sportline
dash board hums

I have a humming or clicking sound in my dash.
I have a 1993 300CE and at least once a week and only within about the first 5 minutes of driving I hear a humming sound from the left side of the dash board. It almost sounds like a air compressor. It sounds for a few seconds and quits. Nothing in the car changes. I am mystified.
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1993 300CE "hummer"
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Old Apr 18, 2006 | 03:22 PM
  #2  
NorCal124's Avatar
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From: Northern Cali
W124
my dash clicks if the heater/AC is on when I start the car but if I start the car then turn it on it doesn't click. no humming though.
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Old Apr 22, 2006 | 04:00 AM
  #3  
Arnie's Avatar
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From: Salem, OR
08 Lexus GS350 AWD. 08 Lexus RX350 AWD - wife's. 94 MBZ E320 - still have it.
OK, please don't laugh. I had similar problem, except the humming was constant. In my case one of the fuses had a hairline crack in it. It was so tiny, I could barely see it. So, since then any time I have any mysterious electrical problem, I check all the fuses before anything else. Many times I found them to either have tiny cracks, or bad connections where they are touchung the fuse holders, and replacing them would cure many problems.
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Old Apr 24, 2006 | 10:40 AM
  #4  
mhorn's Avatar
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From: Richmond, Va.
1991 300E
there are some vacum lines right behind the dash on the left side. Check them from under the hood. Might have a leak.
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Old Apr 25, 2006 | 03:21 AM
  #5  
oneill_1's Avatar
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From: Anaheim
MB 300E | BMW M Coupe
I have a similar problem....about 3-4 times a month my dash makes more of a squeaking/chirping sound. dont know what it is? doesnt happen too much so it doesnt bug me all that much...anyone know?
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Old May 19, 2006 | 09:30 AM
  #6  
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07 e350 127k 02 320e 124k miles 93 300e 3.2 liter 221,000 previous 89 300e 200,000
chirping dashboard

I have the same problem, chirping sound from dash, turn the blower fan off and it goes away, my guess is the motor bearing on the fan.
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Old Aug 13, 2007 | 04:25 PM
  #7  
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07 e350 127k 02 320e 124k miles 93 300e 3.2 liter 221,000 previous 89 300e 200,000
chirping dashboard 93 300e

finally got tired of the chirping, changed the blower motor and squirrel cage. no more chirping sounds.
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