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  #1  
Old 04-06-2004, 09:14 PM
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symptom diagnosis help

Hi, I've got an 85 500sel, it's begun to sound as if my tires are underinflated, although they're not....there's a whining, which is associated with the speed of the car and not the speed of the engine....I was thinking wheel bearings, but I'm just guessing...any help please

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  #2  
Old 04-07-2004, 11:39 AM
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First test: rotate your tires front to rear. If the sound changes or moves, tire wear pattern is the issue.

Steve
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Old 04-10-2004, 01:11 PM
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Hello and thanks for responding.....I did as you suggested, but it made no difference to the noise.....I investigated a little further, ...it makes the noise in neutral and also with the engine off.....I then remembered that my ABS light went on a couple of weeks ago, but went off soon after.....so, I wonder, would the ABS light go out even if there were something continuing to be wrong with the ABS....Also, the break wear indicator, I assume it's auditory....does it sound anything like the noise I'm describing?.....or, any other ideas you might have....thanks .Ken Heimbuch
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Old 04-10-2004, 01:48 PM
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No auditory warning on MB brakes, at least not till you are metal to metal.

There is a good chance that a wheel sensor would be affected by the play in a bad wheel bearing.
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Old 04-10-2004, 02:46 PM
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Thanks, but I wonder then how the brake sensor communicates with you....is it by the dash board light? I also have come to understand that a wheel bearing would make a rythmic sort of noise, and that the wheel might show some back and forth looseness, neither of which is the case, thanks for your help. Ken.
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Old 04-10-2004, 11:32 PM
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When front wheel bearings went bad on one of my Sd's it sounded like I had deep lug snow tires on the front got very loud...........

William Rogers..........

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