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  #1  
Old 12-22-2003, 08:13 PM
WANT '71 280SEL's Avatar
I'll Go Upside Your Head!
 
Join Date: Jan 2003
Location: Dallas, TX
Posts: 3,378
ABS activates right before car stops

I am speaking of my father's 1987 300E. When stopping softly, ABS comes on. This is RIGHT before the car stops moving. It happens probably around 75% of the time. It does happen sometimes under hard braking, but not hard enough that the wheels would lock. The light will sometimes come on after making a stop when it does that, but most of the time the "antilock" lock doesn't come on.
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David
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  #2  
Old 12-22-2003, 08:30 PM
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Join Date: Aug 2001
Location: Evansville, Indiana
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How old is the OVP relay? If ancient, it may be doing something funny.

Otherwise, you have a wheel sensor bad or a brake locking up form dirty calipers or something.

Tires different sizes can do this too, so can a low tire.

Peter
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1987 300D Turbo killed 9/25/07, 275,000 miles
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  #3  
Old 12-23-2003, 01:04 AM
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Join Date: May 2002
Location: Los Angeles, CA
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wheel speed sensor

This is almost always a bad front wheel speed sensor (although it could be the rear).

Bring it to your mechanic asap. You have a real safety issue. In a panic stop, the stopping distance will be extended further than needed due to unnecessary ABS activation.

It's about $150 for parts and labor for a front wheel speed sensor.
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