C250 squealing!!!! - Mercedes-Benz Forum

 
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post #1 of 6 (permalink) Old 09-25-2011, 11:36 AM Thread Starter
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C250 squealing!!!!

Hi everyone, bless the lord for sites like this and people like yourselves, thankyou in advance for the advice I'm sure I'll recieve. I recently bought a 99' C250 auto. I returned to it yesterday to hear I high pitched whine coming from, I think, was the ABS unit. The car starts and drives fine but the noise will only go when the battery is disconnected. Is the unit salvagable or is it a new ABS unit. If it is a new unit, do I have to get one with the exact same part number. Mine is A003 431 03 12 and I have seen one for sale with the number A003 431 18 12 and wondered if the two digits being different would make any difference? Any help would be much appreciated.
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post #2 of 6 (permalink) Old 09-25-2011, 12:27 PM
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Is the ABS light on?

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post #3 of 6 (permalink) Old 09-25-2011, 12:45 PM Thread Starter
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Hi, no ABS light on.
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post #4 of 6 (permalink) Old 09-25-2011, 12:51 PM
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Then I wager to say the root of your troubles may be elsewhere.

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post #5 of 6 (permalink) Old 09-25-2011, 01:24 PM Thread Starter
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Hi, okay, well I shall investigate furthur. The squeeling appears to be coming from that corner of the car. The bizarre thing is, it was letting out this high pitched noise when I got back to it having parked it up for 5 hours!! The car wasn't even running and it was making the noise!! Is there anything else down in that corner that could be making such a noise. Maybe the alarm??? Many thanks for helping me...
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post #6 of 6 (permalink) Old 09-25-2011, 01:38 PM Thread Starter
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Hi again, I've just realised the horn is located down in that corner. I have a feeling this is what may have failed and will certainly explain the high pitched squeel!! I shall investigate furthur and post my findings. Many thanks flyboyike as it was you that got me thinking!!!
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