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2011 GLK,2007 S550,2003 S55,2008 CLK,2009 C300,1996 E300,2005 E320,2002 E3
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1,355 Posts
Discussion Starter #1
Fellas:
my son has the Eclass away in school and said that the car started an odd problem. He said that it has an intermittent ABS light that comes on and when it does the car runs rough but runs still. Has anyone had a similar problem?
 

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W124
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5,175 Posts
FWIW the ABS and SRS lights on my '88 are defacto "low battery" indicators. It seems that whenever an alternator goes (289k, I've had three) the ABS and SRS lights ignite after 5 to 10 minutes of driving. Funny thing is that the battery light never comes on. So I would ask him to have the charging system validated either by purchasing an inexpensive voltmeter and checking for in excess of 13volts across the + and - terminals of the battery when the ABS light is on, or to have it checked by a shop. Other than that, I haven't seen a similar problem crop up on any of my 124s.
 

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W124 Moderator
86 190E 2.3L 16V, 2 95 320TE's, 02 S500
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12,756 Posts
100% agreement with above.. Which E does your son have at school.. 91 or 94?

Jayare
 

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2011 GLK,2007 S550,2003 S55,2008 CLK,2009 C300,1996 E300,2005 E320,2002 E3
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Discussion Starter #4
He has the 91 300 with him in school.
 

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2011 GLK,2007 S550,2003 S55,2008 CLK,2009 C300,1996 E300,2005 E320,2002 E3
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Discussion Starter #7
many thanks guys. where is it located at on the 91?

THANKS
 

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'92 300TE 4matic 280,000miles, '92 300TE 4Matic 'Ice Blue Metalic' 101,000miles
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10,399 Posts
OVP should be next to the battery-where that flimsy black, plastic partition is.

Kevin
 

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1991 300D 116,000m
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730 Posts
Behind the battery, it will have one 10amp fuse on the top if it's the original. Don't try to replace a blown fuse as a long term measure, the entire OVP relay goes bad.

I would also inspect the Voltage Regulator, two screws on the back of the alternator, simple.

Should be a relatively inexpensive fix.
 

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2008 E350 4M, 2016 Audi Allroad, 2019 Audi Q5
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ABS light and OVP are 99% of the time related. The OVP supplies power the the ABS unit. OVP dies, ABS unit dies (although the ABS still functions).

Replace the entire relay. Don't bother attempting to replace it or diagnose it. This is not an item you do this with. Trust me :thumbsup: Replace it and have peace of mind.
 

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2011 GLK,2007 S550,2003 S55,2008 CLK,2009 C300,1996 E300,2005 E320,2002 E3
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Discussion Starter #11
MANY THANKS --YOU GUYS ARE THE BEST.
 
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