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X5 E53 (1999 - 2006)
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  #1  
Old 05-05-2013, 05:07 PM
javed13 javed13 is offline
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Location: Bronx, NY
 
Join Date: Jan 2012
Posts: 9
Mein Auto: 2002 bmw x5 4.4
AC Cold for 20 minutes then then becomes warm

Hi guys, my ac is cold for 20 minutes and then becomes warm. if i shut off the ac and turn it back on after couple minutes, it becomes cold. what could be the problem?
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  #2  
Old 05-05-2013, 05:57 PM
upallnight upallnight is offline
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Location: Crook County
 
Join Date: Nov 2012
Posts: 428
Mein Auto: BMW, Lotus, Porsche
When it is warm check to see if the compressor is running. Could be that you have a blockage in the system and the pressure is building up that the high side pressure cutout is kicking in, or the lowside is low and the lowside pressure cutout is kicking in. The only way to determine the problem is to connect a set of gauges to the system and find out what the pressure readings are.
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  #3  
Old 05-06-2013, 02:13 AM
flyace20 flyace20 is offline
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Location: Australia
 
Join Date: Mar 2013
Posts: 54
Mein Auto: 2002 X5 4.4
I read a post on this forum about driving the car on open road and the system freezing up and not cooling.
Go to this thread, maybe you have the same problem. http://www.bimmerfest.com/forums/sho...d.php?t=463910
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Old 05-06-2013, 03:09 AM
thehinch thehinch is offline
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Location: Sydney
 
Join Date: Nov 2012
Posts: 5
Mein Auto: 2003 E53 X5
Air conditioning control module located under the dashboard
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  #5  
Old 05-10-2013, 09:16 AM
BMWReeFeR BMWReeFeR is offline
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Location: Oklahoma
 
Join Date: Apr 2013
Posts: 4
Mein Auto: E53 X5
AC Cold for 20 minutes then then becomes warm

Ever figure this one out ace?


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  #6  
Old 05-11-2013, 05:01 AM
flyace20 flyace20 is offline
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Location: Australia
 
Join Date: Mar 2013
Posts: 54
Mein Auto: 2002 X5 4.4
Next time it happens to me on the freeway I will test the theory by shutting off the Ac and allowing it to defrost. Then turn back on again in a few minutes, if it blows cold after this then it may well be that its true, the line is freezing up somewhere.
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