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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 09-13-2012, 10:38 AM
wymo wymo is offline
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Location: Georgia
 
Join Date: Jun 2012
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Mein Auto: 2003 745 Li
coolant leak

why is my 03' 745Li leaking antifreeze and where is it leaking from?
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  #2  
Old 09-13-2012, 12:38 PM
bossku69 bossku69 is offline
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Location: Harrisburg PA
 
Join Date: Jun 2009
Posts: 117
Mein Auto: 2006 750Li
Mine does the same thing in an '06 750Li. Dealer said they can not locate the leak but could be through a small crack or clamp. They will need to run a flush test to find it which will cost me $$$. I'll just keep putting in coolant every few weeks instead
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  #3  
Old 09-13-2012, 12:58 PM
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sirstopher sirstopher is offline
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Location: Ok.
 
Join Date: Aug 2011
Posts: 1,100
Mein Auto: POS Honda
Hoses, clamp, water pump, expansion tank, crossover pipe, valley pan, radiator. Ect, ect...

Be a little more descriptive!
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  #4  
Old 09-13-2012, 01:00 PM
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sirstopher sirstopher is offline
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Quote:
Originally Posted by bossku69 View Post
Mine does the same thing in an '06 750Li. Dealer said they can not locate the leak but could be through a small crack or clamp. They will need to run a flush test to find it which will cost me $$$. I'll just keep putting in coolant every few weeks instead
Any good mechanic can pressure test the system for 40 bucks and tell you without a flush.
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  #5  
Old 09-13-2012, 02:56 PM
fabolousarch fabolousarch is offline
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Location: NYC
 
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Mein Auto: 745i
I'm having the same problem and I dont have a leak... I smell the antifreeze fumes when I'm driving with the windows down and I get the low coolant warning as well. This is really worrying me ... Someone please help
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  #6  
Old 09-13-2012, 07:17 PM
SFbay SFbay is offline
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Location: SF
 
Join Date: Mar 2012
Posts: 893
Mein Auto: BMW 745i
Check wheep hole- most invisible leak
Lower hose sensor
Expansion tank
Y shape hose from heads
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  #7  
Old 09-25-2012, 03:53 PM
Marcusmenu Marcusmenu is offline
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Location: Texas
 
Join Date: Sep 2008
Posts: 7
Mein Auto: 745 Li
Had the same problem, it was the expansion tank. Dont buy the after market ones, you will have the same problem within a few weeks plus the hoses sometimes don't fit exactly tight and will leak.

I suggest you get it fron the dealer for less than $125.00. Changing it is simple, should take only a few min. You will loose some coolant and make sure you have extra on hand or just refill with water.

Hope this help.
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  #8  
Old 09-25-2012, 04:01 PM
Marcusmenu Marcusmenu is offline
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Location: Texas
 
Join Date: Sep 2008
Posts: 7
Mein Auto: 745 Li
Automatic trunk opening and closing

I'm having problem with my trunk opening and closing automtically. I can hear the motor running when the button is activated but the trunk will not fully open or close.

Have anyone else had this problem and is this something I can fix myself. Dont' want to know what the stealership would charge.

If it's too big of a problem I'm thinking of leaving it alone and continue to do it manually, just like for everything to work on my ride.

Help anyone.


Thanks
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  #9  
Old 09-25-2012, 11:10 PM
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Emeer18 Emeer18 is offline
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Location: Akron, Ohio
 
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Mein Auto: BMW 745Li
I recently had the coolant problem. I thought it was the weephole, thank god it wasnt. My expansion tank was fine as was the radator and hoses. Check your water pump! The part of the water pump that connects to the belt can sever from the pump and only at high rpm's does it spin fast enough to leak. If you DIY should take 3-5 hours and about $250-300. If not 750 at the dealer.
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  #10  
Old 09-25-2012, 11:13 PM
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Emeer18 Emeer18 is offline
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Location: Akron, Ohio
 
Join Date: Jul 2011
Posts: 469
Mein Auto: BMW 745Li
Quote:
Originally Posted by Marcusmenu View Post
I'm having problem with my trunk opening and closing automtically. I can hear the motor running when the button is activated but the trunk will not fully open or close.

Have anyone else had this problem and is this something I can fix myself. Dont' want to know what the stealership would charge.

If it's too big of a problem I'm thinking of leaving it alone and continue to do it manually, just like for everything to work on my ride.

Help anyone.


Thanks
Look for a thread on here that talks about auto trunk pump fluid. It may be low on fluid and hence not enough pressure to open that heavy trunk lid
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