E39 540 "Check Coolant Level"
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=24545
Printed Date: 28-April-2024 at 06:45
Topic: E39 540 "Check Coolant Level"
Posted By: __CRiSiS__
Subject: E39 540 "Check Coolant Level"
Date Posted: 25-November-2005 at 04:40
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Morning all. I have a quick query re: a "warning" message I receive on cold mornings, which to be honest is every morning at the moment The warning is: "CHECK COOLANT LEVEL" I have checked this numerous times at various times of the day and, as far as I can tell, its OK.
NOTE: This only happens on cold mornings. ------------- Prev: e34 95 518ie : Nice intro to BMW Motoring Prev: e36 '97 328is Coupe  : For the more sporty drive
Current: e39 '00 540i Sport 6sp Man    comfort & speed....N I C E.
__CRiSiS__ |
Replies:
Posted By: oddball
Date Posted: 28-November-2005 at 08:33
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Suspect coolant level sensor. You could try measuring the resestance level acrosss the sensor but having said that I don't know what the acceptable values would be - sorry! Any one here know? I have the same problem by the way. I'm having a new radiator fitted + new sensor tomorrow so I'll see if this clears it. If not then I'd guess it would be a weakness in the wiring or the CCM unit in the fusebox. Nev |
Posted By: donut
Date Posted: 28-November-2005 at 11:59
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Usually down the a problem with the sensor and/or expansion tank. More details on www.540i6.com -------------   
Click here for my http://gallery.spod.net/my_cars/bmw_e39_540i/ - gallery & specs |
Posted By: gordon530
Date Posted: 28-November-2005 at 12:11
| I had this issue with a 1998 540i, and on my car the problem was the sensor which is in the expansion tank. Cost £120 to put a new tankin at the dealers. |
Posted By: __CRiSiS__
Date Posted: 29-November-2005 at 04:48
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Thanks for the info fellas!
------------- Prev: e34 95 518ie : Nice intro to BMW Motoring Prev: e36 '97 328is Coupe : For the more sporty drive
Current: e39 '00 540i Sport 6sp Man comfort & speed....N I C E.
__CRiSiS__ |