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Old 11-25-2002, 11:54 PM
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abs light comes on at 65 mph

Hi All,
Can you help me with this one? I have 1988 300 E 100k. The ABS light comes on exactly at 65 mph. When I drive around town it never comes on (sure if I tried to drive thru downtown at 65 it would come on) but on highway as soon as I hit 65 mph that's it. I checked all three ABS sensors and cleaned them (They were not really dirty) but it did not help it. I guess if it was one of the sensors was bad I would get the light on at much lower speeds.
Does anybody have any suggestions?
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Old 11-26-2002, 07:54 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
I would jack-up the car & measure the circumference of all 4 tires very closely.

Also the charging system may act up at highway speeds, too much voltage can drive the system crazy.
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Old 11-26-2002, 12:51 PM
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Thanks for your suggestion. Today I will measure circumference.
It makes sense because I bought this car with all tires different brands.
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Old 11-26-2002, 02:05 PM
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Join Date: Apr 2002
Location: Surrey, Uk
Posts: 254
Rolling radius with car on ground is the critical one. Check the tyre inflation pressures too - that has been known to cause this.
Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)
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