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E34 (1989 - 1995)

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  #1  
Old 07-11-2013, 05:03 PM
phillips82 phillips82 is offline
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Location: Alaska
 
Join Date: Jul 2013
Posts: 4
Mein Auto: 1995 BMW 525i
Coolant

Hello Everyone! I recently Bought a 1995 BMW 525i E34, and am trying to trouble shoot why every time I start the car I see "coolant level" "owners Manual". My level is right where it should be. Im a little confused on the bleeder valve, and its exact purpose. But mainly was curious on why the instrument panel is showing theses faults?

Thank you
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  #2  
Old 07-11-2013, 05:30 PM
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BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Welcome to the Fest.

Either your coolant level sensor has failed or the wire(s) to it have broken. The sensor is located at the bottom of the radiator on the driver's side.

I had the wires partially break as seen here:



It was an easy fix. I just cut and spliced them. They were pretty short so I had to be careful.

Hope this helps.

Again, welcome to the fest.
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It's Deja Poo - as in, I've heard this **** before.
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Calypso Red 1992 525i with 200K miles

1991 735i - Sold
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  #3  
Old 07-11-2013, 05:32 PM
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DanM5 DanM5 is offline
My other ride is ur wife
Location: Perth, WA
 
Join Date: Feb 2013
Posts: 213
Mein Auto: 535is-m
Coolant

Probably just a level sensor fault.. Check the plug to it, make sure there is power at it


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  #4  
Old 07-11-2013, 05:41 PM
Larrick Larrick is offline
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Location: Berkeley California
 
Join Date: Sep 2009
Posts: 527
Mein Auto: 1994 525it
My son's 1994 525it has displayed "coolant Level" warning for the last four years. Since the day he bought it.
The coolant system has been been replaced ( pump, fan clutch,hoses) due to failed pump and the system flushed.
The coolant level warning remains on. The problem is the sensor which is at the bottom of the radiator.
We have just ignored the warning but we should change the sensor.
If your level is good then it is probably the sensor.
The bleeder valve to to remove air in the system if the level has gone down too low or work was done on
the cooling system and air may have entered it.
You need to have the cabin heat on when you bleed the system.
The Bentley manual should explain it or a past three on this forum.
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  #5  
Old 07-11-2013, 06:13 PM
phillips82 phillips82 is offline
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Location: Alaska
 
Join Date: Jul 2013
Posts: 4
Mein Auto: 1995 BMW 525i
Thank you all for your thoughts and advice, At least now I have somewhere to go and start trouble shooting. Thanks again
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  #6  
Old 07-14-2013, 10:47 AM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
 
Join Date: Jan 2012
Posts: 927
Mein Auto: 1989 525i M20B25
If the sensor itself fails this happens:
http://www.terwilliger.org/bmw/coolant_sensor.html

Just for future reference.
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