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  #1  
Old 01-06-2003, 09:45 PM
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Location: Near Williamsburg, Virginia
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'94 E320 ABS light comes on

The ABS light comes on once the car rolls forward or backwards about 50 to 100 feet. Just before the light comes on there is a two second noise forward and to the left of the driver. The sound is a bit ambiguous like metal on a rotor, a pump grinding or hydraulic fluid under pressure when a valve won't open .

I can start the car, let it idle, back it out of the drive, hit the brakes, but the light doesn't come on until I've headed down the driveway some 50' to 200'.

Prior to detecting the noise I checked the alternator output, okay, wiped off the front wheel speed sensors (I didn't clean inside the wheel) and visual checked the control unit circuit board. Is there anything else for me to do or is it time to take the car to my MB dealer?

I do know that the ABS is inoperative. I've been waiting for wet weather to check this, and it has just started to snow so I was able to do a bit of slipping and sliding.

Cheers,

Last edited by Robby Ackerman; 01-06-2003 at 10:02 PM.
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  #2  
Old 01-06-2003, 09:56 PM
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This might be a stab in the dark, but a bad OVP can cause the ABS light to come on...
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #3  
Old 01-06-2003, 10:04 PM
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I looked at the fuse and it appeared okay. I didn't actually remove it from the OVP and look at it closely, but I'll go out and check it a bit more closely.

Robby
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  #4  
Old 01-06-2003, 10:14 PM
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Location: Near Williamsburg, Virginia
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I pulled the 15 amp fuse and checked it visually and with a volt meter and the fuse is okay.

Robby
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  #5  
Old 01-06-2003, 10:16 PM
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I've read that sometimes they look good when they are not.

Do you know if you have the original OVP?

Does it say Made in Austria? The old ones were replaced with a new part #.

Can you read the part number on it?

If it's the old part number, it should be replaced anyway.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #6  
Old 01-06-2003, 10:45 PM
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Paul

It is made in Germany. Part number 000 540 67 45. It has another number on it as well 89 7129 000. I don't know if it is the original OVP or not.

Robby
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  #7  
Old 01-06-2003, 11:23 PM
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Looks like you got the new one. "....67 45" is the new number.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #8  
Old 01-06-2003, 11:26 PM
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Paul, Thanks for your help.

Robby
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  #9  
Old 01-06-2003, 11:29 PM
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Quote:
Originally posted by Robby Ackerman
Paul, Thanks for your help.

Robby
You're welcome. Just wish my help would've solved your problem.

Maybe a real technician will provide some better advice.

Besides, I'm not even a mechanic. I just stayed in a Holiday Inn last night.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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